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Abstract: This paper systematically introduces the ABB, the basic principle of current sensors, circuits, model, parameters, installation, calculation and calibration methods, factors and current sensor in power technologies and application prospects of the importance of .

  I. Introduction With the expansion of the urban population and the scale of construction, the increase of various electrical equipment, electricity consumption increases, the city often overload the power supply equipment, power has become increasingly harsh environment , on the power of “test” more and more serious. According to statistics, daily, electric equipment have been about 120 times the power problems of various intrusive, electronic equipment from power failures 60% [7]. Therefore, the growing importance of power issues prominent. Originally as a supporting role, more power with less capital investment by manufacturers and researchers, attention, power technology thus developed into a new technology.

Today, small power equipment has been integrated more and more new technology. For example, switching power supply, hard switching, soft switching, parameter regulation, linear feedback regulator, magnetic amplifier technology, numerical control pressure regulator, PWM, SPWM, electromagnetic compatibility and so on. Direct promotion of the actual needs of the power technology continues to develop and progress, to automatically detect and display the current, and over current, over voltage and other hazards happens with automatic protection and more advanced intelligent control with sensor detection, sensor sampling, Power Sensor trend towards protection, testing current or voltage sensors have come into being by the great majority in our country has the power designers, this paper introduces the ABB company’s current sensors.

2, current sensor works [1] ABB’s current sensor can measure all types of current, from DC to tens of kHz AC, its working principle is mainly based on Hall effect, shown in Figure 1.

When the primary conductor through the current sensor, the primary current I P  Produce magnetic field lines , the primary focus on core magnetic field lines around the air gap built into the core of the Hall electrode can produce and the primary is proportional to the size of the magnetic field lines just a few millivolts of the voltage, the electronic circuit can this tiny signal into secondary side current I S   , and there is the following relation

Which I S  ? Vice-edge current; I P  ? The primary current; N P  ? The primary number of turns;

N S  ? Vice-side coil turns; N P  / N S  ? Turns ratio, and generally the N P  = 1.

Current sensor output signal is the current Vice-side I S  It with the input signal (the primary current I P  ) Is proportional to I S  Generally small, only 100 ~ 400mA. If the output current through the measurement of resistance R M  , You can get a current proportional to the size of the primary as a few volts of output voltage signal.

Three main parameters of current sensors [1] [2] [3] [4]

1, the standard rating I PN  And rated output current I SN

I PN  Current sensor can test that the standard rating, with RMS that (Arms), I PN  The size of the sensor model.

I SN  Means the current sensor rated output current, typically 100 ~ 400mA, some models may vary.

2, sensor supply voltage V A

V A  Means the current sensor supply voltage, it must be provided in the sensor range. Over this range, the sensor does not work or reduce the reliability of the other, the sensor supply voltage V A  Divided into positive supply voltage V A  + And the negative supply voltage V A  -.

3, measuring range I pmax Current sensor measurement range that can measure the maximum current value, measuring range is generally higher than the standard rating I PN  . Measuring range can be calculated

Should pay attention to single-phase power supply of sensors, the power supply voltage V Amin  Is a two-phase supply voltage V Amin  2 times, so its measurement range than two-phase power supply sensors.

4, overload Current sensor overload See Figure 2. Occurrence of current overload, the measurement scope, the primary current will increase and overload current duration may be shorter and the overload value is likely to exceed the sensor allows the value of overload current values of sensors generally measure does not come out, but not will damage the sensor.

5, precision Hall effect sensor accuracy depends on the standard rated current I PN  . At +25 , the sensor accuracy affected by the primary current curve shown in Figure 3, the accuracy can be calculated using the following formula

Which K  = N  S / N P  .

Accuracy must be considered when the current offset, linearity, temperature drift effects.

(1). Offset current I SO Offset current is also called residual current or residual current, it is mainly from the Hall element or an electronic circuit operational amplifier instability caused by working conditions. Current sensors in production, at 25 , I P  = 0 case, the offset current has been to the minimum, but left the production line sensor will produce a certain size offset current. Products mentioned in the accuracy of technical documentation has been considered the offset current increases in.

(2). Linearity See Figure 4, the linearity determines the sensor output (secondary side current I S  ) And the input signal (the primary current I P  ) Within the measurement is proportional to the degree, ABB’s current sensor linearity is better than 0.1%.

(3). Temperature drift Offset current I SO  Is calculated at 25 , when the Hall electrodes surrounding temperature changes, I SO  Will make a difference. Therefore, considering the current offset I SO  The biggest change is very important, which can be calculated

Which, CV (Catalogue value) is the current sensor temperature drift performance of the table values, for example: CS2000BR type is, CV is 0.5 × 10 —– -4 / , the maximum temperature T max  To -40 , rated output current of 400mA, the maximum offset current changes.

4, sensor type, structure and installation method

I am China Manufacturers writer, reports some information about windshield washer pumps , siemens vacuum pump.

Abstract: This paper systematically introduces the ABB, the basic principle of current sensors, circuits, model, parameters, installation, calculation and calibration methods, factors and current sensor in power technologies and application prospects of the importance of .

  I. Introduction With the expansion of the urban population and the scale of construction, the increase of various electrical equipment, electricity consumption increases, the city often overload the power supply equipment, power has become increasingly harsh environment , on the power of “test” more and more serious. According to statistics, daily, electric equipment have been about 120 times the power problems of various intrusive, electronic equipment from power failures 60% [7]. Therefore, the growing importance of power issues prominent. Originally as a supporting role, more power with less capital investment by manufacturers and researchers, attention, power technology thus developed into a new technology.

Today, small power equipment has been integrated more and more new technology. For example, switching power supply, hard switching, soft switching, parameter regulation, linear feedback regulator, magnetic amplifier technology, numerical control pressure regulator, PWM, SPWM, electromagnetic compatibility and so on. Direct promotion of the actual needs of the power technology continues to develop and progress, to automatically detect and display the current, and over current, over voltage and other hazards happens with automatic protection and more advanced intelligent control with sensor detection, sensor sampling, Power Sensor trend towards protection, testing current or voltage sensors have come into being by the great majority in our country has the power designers, this paper introduces the ABB company’s current sensors.

2, current sensor works [1] ABB’s current sensor can measure all types of current, from DC to tens of kHz AC, its working principle is mainly based on Hall effect, shown in Figure 1.

When the primary conductor through the current sensor, the primary current I P  Produce magnetic field lines , the primary focus on core magnetic field lines around the air gap built into the core of the Hall electrode can produce and the primary is proportional to the size of the magnetic field lines just a few millivolts of the voltage, the electronic circuit can this tiny signal into secondary side current I S   , and there is the following relation

Which I S  ? Vice-edge current; I P  ? The primary current; N P  ? The primary number of turns;

N S  ? Vice-side coil turns; N P  / N S  ? Turns ratio, and generally the N P  = 1.

Current sensor output signal is the current Vice-side I S  It with the input signal (the primary current I P  ) Is proportional to I S  Generally small, only 100 ~ 400mA. If the output current through the measurement of resistance R M  , You can get a current proportional to the size of the primary as a few volts of output voltage signal.

Three main parameters of current sensors [1] [2] [3] [4]

1, the standard rating I PN  And rated output current I SN

I PN  Current sensor can test that the standard rating, with RMS that (Arms), I PN  The size of the sensor model.

I SN  Means the current sensor rated output current, typically 100 ~ 400mA, some models may vary.

2, sensor supply voltage V A

V A  Means the current sensor supply voltage, it must be provided in the sensor range. Over this range, the sensor does not work or reduce the reliability of the other, the sensor supply voltage V A  Divided into positive supply voltage V A  + And the negative supply voltage V A  -.

3, measuring range I pmax Current sensor measurement range that can measure the maximum current value, measuring range is generally higher than the standard rating I PN  . Measuring range can be calculated

Should pay attention to single-phase power supply of sensors, the power supply voltage V Amin  Is a two-phase supply voltage V Amin  2 times, so its measurement range than two-phase power supply sensors.

4, overload Current sensor overload See Figure 2. Occurrence of current overload, the measurement scope, the primary current will increase and overload current duration may be shorter and the overload value is likely to exceed the sensor allows the value of overload current values of sensors generally measure does not come out, but not will damage the sensor.

5, precision Hall effect sensor accuracy depends on the standard rated current I PN  . At +25 , the sensor accuracy affected by the primary current curve shown in Figure 3, the accuracy can be calculated using the following formula

Which K  = N  S / N P  .

Accuracy must be considered when the current offset, linearity, temperature drift effects.

(1). Offset current I SO Offset current is also called residual current or residual current, it is mainly from the Hall element or an electronic circuit operational amplifier instability caused by working conditions. Current sensors in production, at 25 , I P  = 0 case, the offset current has been to the minimum, but left the production line sensor will produce a certain size offset current. Products mentioned in the accuracy of technical documentation has been considered the offset current increases in.

(2). Linearity See Figure 4, the linearity determines the sensor output (secondary side current I S  ) And the input signal (the primary current I P  ) Within the measurement is proportional to the degree, ABB’s current sensor linearity is better than 0.1%.

(3). Temperature drift Offset current I SO  Is calculated at 25 , when the Hall electrodes surrounding temperature changes, I SO  Will make a difference. Therefore, considering the current offset I SO  The biggest change is very important, which can be calculated

Which, CV (Catalogue value) is the current sensor temperature drift performance of the table values, for example: CS2000BR type is, CV is 0.5 × 10 —– -4 / , the maximum temperature T max  To -40 , rated output current of 400mA, the maximum offset current changes.

4, sensor type, structure and installation method

Survey, China Screen Printing Industry by manufacturers several types of product order: signs and panels, textiles and clothing, plastic sheets, advertising materials, printed circuit, light boxes. Screen printing to some emerging areas of extraordinary rate, such as building materials, card, CD, security printing and so on.

1. Advertising printing Screen printing in the commercial market will have more, some large companies, especially electric company, tobacco company to promote its image very seriously the role of advertising. Advertising time and to some extent determine the quality of the company’s share of the market. So all kinds of electrical advertising, packaging, advertising, outdoor advertising, advertising to the screen printing provides a wide space. In the commercial competition, since a large outdoor advertising wide perspective, effective and taken seriously. Therefore, our screen printing large color outdoor advertising along with the development of commercial advertising, the increasing volume showed large, cheap, colorful, long storage, fast delivery and other advantages, more and more cities are planning department , Advertising Management Accreditation, attracted a lot of advertisers.

2. Packaging and Printing Screen printing industry, packaging industry is the main target, screen printing technology continues to develop applications that will better serve the packaging and decorating industry for packaging and decorating industry to contribute to a more prosperous, but also for the screen printing industries and the broader market. Such as the Indian high-end boxes, bottles, cigarette packets, wine bag side.

Particularly large packaging and product decoration, the same as the goods enter the market, appeared in front of customers. If the case of large electrical appliances with a beautiful silk screen printing process, these large decorative shell products anywhere, shopping malls, will be favored by the customers, play an irreplaceable packaging advertising advocacy role. Large packaging and product color printing is a very easy case, large color screen printing of the development so large carton packaging and large electrical appliances decorative shell color image for the product to increase the bright colors, the development of this project with dazzling bright prospects. With the continuous development of computer technology, a variety of software emerging, in particular, education, culture and entertainment, television movies and a variety of publications, increasing the output of CD discs.

This CD disc logo, images, text printing is 90% of the way using screen printing. Screen printing equipment, low investment, low cost, convenient plate, suitable for CD, and more varieties of printing features.

3. Handicraft printing With the western development and rural urbanization, tile production line to increase the momentum. It is estimated that the product may be consumed daily in the country 10 000 Silk Screen. In addition, China is a ceramic power, in addition to meet the large demand for domestic but also exported to more than 150 countries and regions, thus Ceramic Decal Screen Printing Screen Printing Industry in China, important.

2003, the imitation of natural stone series ceramic tile concern. Dual-pressure technology, the new series has a slate, marble and other natural appearance and texture can be done in different departments and regions, and has uneven texture. Currently only five manufacturers in the world with this technology. Each tile in line with the golden section proportion visually comfortable. In production using the latest inkjet technology, the tile surface with good gloss, which is a screen-printing technology, and products do not touch, through accurate inkjet system to print images to the four sides, without trimming. The use of advanced technology, designers are more realistic pattern pen, even a fine display of the tile. Combined with the latest screen printing technology, ceramic tile has gone beyond the original concept of public health, and life tiles, ceramic tiles and stylish closer together.

4. Circuit printing Screen printing in the electronics industry share of 80%. Such as the production of a television, a lot of places to use screen-printing, screen (PALC) and other large flat panel display devices become increasingly inseparable from the development of screen printing. If POP board by the applied voltage to the xenon gas to discharge, issued by the ultraviolet light to the fluorescent body, the converted into visible light. Such as the use of screen printing and mass production of 40-type class board, next door width can reach 30 m. Such as high definition television (HDTV), 40 type-level panel, asked about his next door width of 50 m, gap accuracy of 200 m, also need to screen printing solution.

I am Frbiz Site writer, reports some information about ethiopian art , coccyx cushions.

Abstract: This paper systematically introduces the ABB, the basic principle of current sensors, circuits, model, parameters, installation, calculation and calibration methods, factors and current sensor in power technologies and application prospects of the importance of .

  I. Introduction With the expansion of the urban population and the scale of construction, the increase of various electrical equipment, electricity consumption increases, the city often overload the power supply equipment, power has become increasingly harsh environment , on the power of “test” more and more serious. According to statistics, daily, electric equipment have been about 120 times the power problems of various intrusive, electronic equipment from power failures 60% [7]. Therefore, the growing importance of power issues prominent. Originally as a supporting role, more power with less capital investment by manufacturers and researchers, attention, power technology thus developed into a new technology.

Today, small power equipment has been integrated more and more new technology. For example, switching power supply, hard switching, soft switching, parameter regulation, linear feedback regulator, magnetic amplifier technology, numerical control pressure regulator, PWM, SPWM, electromagnetic compatibility and so on. Direct promotion of the actual needs of the power technology continues to develop and progress, to automatically detect and display the current, and over current, over voltage and other hazards happens with automatic protection and more advanced intelligent control with sensor detection, sensor sampling, Power Sensor trend towards protection, testing current or voltage sensors have come into being by the great majority in our country has the power designers, this paper introduces the ABB company’s current sensors.

2, current sensor works [1] ABB’s current sensor can measure all types of current, from DC to tens of kHz AC, its working principle is mainly based on Hall effect, shown in Figure 1.

When the primary conductor through the current sensor, the primary current I P  Produce magnetic field lines , the primary focus on core magnetic field lines around the air gap built into the core of the Hall electrode can produce and the primary is proportional to the size of the magnetic field lines just a few millivolts of the voltage, the electronic circuit can this tiny signal into secondary side current I S   , and there is the following relation

Which I S  ? Vice-edge current; I P  ? The primary current; N P  ? The primary number of turns;

N S  ? Vice-side coil turns; N P  / N S  ? Turns ratio, and generally the N P  = 1.

Current sensor output signal is the current Vice-side I S  It with the input signal (the primary current I P  ) Is proportional to I S  Generally small, only 100 ~ 400mA. If the output current through the measurement of resistance R M  , You can get a current proportional to the size of the primary as a few volts of output voltage signal.

Three main parameters of current sensors [1] [2] [3] [4]

1, the standard rating I PN  And rated output current I SN

I PN  Current sensor can test that the standard rating, with RMS that (Arms), I PN  The size of the sensor model.

I SN  Means the current sensor rated output current, typically 100 ~ 400mA, some models may vary.

2, sensor supply voltage V A

V A  Means the current sensor supply voltage, it must be provided in the sensor range. Over this range, the sensor does not work or reduce the reliability of the other, the sensor supply voltage V A  Divided into positive supply voltage V A  + And the negative supply voltage V A  -.

3, measuring range I pmax Current sensor measurement range that can measure the maximum current value, measuring range is generally higher than the standard rating I PN  . Measuring range can be calculated

Should pay attention to single-phase power supply of sensors, the power supply voltage V Amin  Is a two-phase supply voltage V Amin  2 times, so its measurement range than two-phase power supply sensors.

4, overload Current sensor overload See Figure 2. Occurrence of current overload, the measurement scope, the primary current will increase and overload current duration may be shorter and the overload value is likely to exceed the sensor allows the value of overload current values of sensors generally measure does not come out, but not will damage the sensor.

5, precision Hall effect sensor accuracy depends on the standard rated current I PN  . At +25 , the sensor accuracy affected by the primary current curve shown in Figure 3, the accuracy can be calculated using the following formula

Which K  = N  S / N P  .

Accuracy must be considered when the current offset, linearity, temperature drift effects.

(1). Offset current I SO Offset current is also called residual current or residual current, it is mainly from the Hall element or an electronic circuit operational amplifier instability caused by working conditions. Current sensors in production, at 25 , I P  = 0 case, the offset current has been to the minimum, but left the production line sensor will produce a certain size offset current. Products mentioned in the accuracy of technical documentation has been considered the offset current increases in.

(2). Linearity See Figure 4, the linearity determines the sensor output (secondary side current I S  ) And the input signal (the primary current I P  ) Within the measurement is proportional to the degree, ABB’s current sensor linearity is better than 0.1%.

(3). Temperature drift Offset current I SO  Is calculated at 25 , when the Hall electrodes surrounding temperature changes, I SO  Will make a difference. Therefore, considering the current offset I SO  The biggest change is very important, which can be calculated

Which, CV (Catalogue value) is the current sensor temperature drift performance of the table values, for example: CS2000BR type is, CV is 0.5 × 10 —– -4 / , the maximum temperature T max  To -40 , rated output current of 400mA, the maximum offset current changes.

4, sensor type, structure and installation method

Survey, China Screen Printing Industry by manufacturers several types of product order: signs and panels, textiles and clothing, plastic sheets, advertising materials, printed circuit, light boxes. Screen printing to some emerging areas of extraordinary rate, such as building materials, card, CD, security printing and so on.

1. Advertising printing Screen printing in the commercial market will have more, some large companies, especially electric company, tobacco company to promote its image very seriously the role of advertising. Advertising time and to some extent determine the quality of the company’s share of the market. So all kinds of electrical advertising, packaging, advertising, outdoor advertising, advertising to the screen printing provides a wide space. In the commercial competition, since a large outdoor advertising wide perspective, effective and taken seriously. Therefore, our screen printing large color outdoor advertising along with the development of commercial advertising, the increasing volume showed large, cheap, colorful, long storage, fast delivery and other advantages, more and more cities are planning department , Advertising Management Accreditation, attracted a lot of advertisers.

2. Packaging and Printing Screen printing industry, packaging industry is the main target, screen printing technology continues to develop applications that will better serve the packaging and decorating industry for packaging and decorating industry to contribute to a more prosperous, but also for the screen printing industries and the broader market. Such as the Indian high-end boxes, bottles, cigarette packets, wine bag side.

Particularly large packaging and product decoration, the same as the goods enter the market, appeared in front of customers. If the case of large electrical appliances with a beautiful silk screen printing process, these large decorative shell products anywhere, shopping malls, will be favored by the customers, play an irreplaceable packaging advertising advocacy role. Large packaging and product color printing is a very easy case, large color screen printing of the development so large carton packaging and large electrical appliances decorative shell color image for the product to increase the bright colors, the development of this project with dazzling bright prospects. With the continuous development of computer technology, a variety of software emerging, in particular, education, culture and entertainment, television movies and a variety of publications, increasing the output of CD discs.

This CD disc logo, images, text printing is 90% of the way using screen printing. Screen printing equipment, low investment, low cost, convenient plate, suitable for CD, and more varieties of printing features.

3. Handicraft printing With the western development and rural urbanization, tile production line to increase the momentum. It is estimated that the product may be consumed daily in the country 10 000 Silk Screen. In addition, China is a ceramic power, in addition to meet the large demand for domestic but also exported to more than 150 countries and regions, thus Ceramic Decal Screen Printing Screen Printing Industry in China, important.

2003, the imitation of natural stone series ceramic tile concern. Dual-pressure technology, the new series has a slate, marble and other natural appearance and texture can be done in different departments and regions, and has uneven texture. Currently only five manufacturers in the world with this technology. Each tile in line with the golden section proportion visually comfortable. In production using the latest inkjet technology, the tile surface with good gloss, which is a screen-printing technology, and products do not touch, through accurate inkjet system to print images to the four sides, without trimming. The use of advanced technology, designers are more realistic pattern pen, even a fine display of the tile. Combined with the latest screen printing technology, ceramic tile has gone beyond the original concept of public health, and life tiles, ceramic tiles and stylish closer together.

4. Circuit printing Screen printing in the electronics industry share of 80%. Such as the production of a television, a lot of places to use screen-printing, screen (PALC) and other large flat panel display devices become increasingly inseparable from the development of screen printing. If POP board by the applied voltage to the xenon gas to discharge, issued by the ultraviolet light to the fluorescent body, the converted into visible light. Such as the use of screen printing and mass production of 40-type class board, next door width can reach 30 m. Such as high definition television (HDTV), 40 type-level panel, asked about his next door width of 50 m, gap accuracy of 200 m, also need to screen printing solution.

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• Android is Linux based so it gives easy contact to core mobile device functionality and Rich.

While choosing experts who will do this job for you, it is always a better idea to go for the experts who are part of a company. Moreover, well-organized companies manage to achieve more within a short period of time because they can enjoy the advantages of dividing labor according to the specialization of the people.

Android Application Development is a grooming business among software development companies now days. The programmers have leveraging skills and expertise in Android Application Development. It has opened up new path for the unbelievable growth of Outsourcing Android services and expertise. The companies concerned in business of Outsourcing Android services and expertise are providing cost-effective and feature-rich solutions to its client.

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About Author:
Author has 5 year of experience in writing articles and working as iphone application development at fusion informatics, we provide ipad application development, mobile apps development, Android apps development, blackberry apps development, window mobile apps development at fusioninformatics.com

Abstract: This paper systematically introduces the ABB, the basic principle of current sensors, circuits, model, parameters, installation, calculation and calibration methods, factors and current sensor in power technologies and application prospects of the importance of .

  I. Introduction With the expansion of the urban population and the scale of construction, the increase of various electrical equipment, electricity consumption increases, the city often overload the power supply equipment, power has become increasingly harsh environment , on the power of “test” more and more serious. According to statistics, daily, electric equipment have been about 120 times the power problems of various intrusive, electronic equipment from power failures 60% [7]. Therefore, the growing importance of power issues prominent. Originally as a supporting role, more power with less capital investment by manufacturers and researchers, attention, power technology thus developed into a new technology.

Today, small power equipment has been integrated more and more new technology. For example, switching power supply, hard switching, soft switching, parameter regulation, linear feedback regulator, magnetic amplifier technology, numerical control pressure regulator, PWM, SPWM, electromagnetic compatibility and so on. Direct promotion of the actual needs of the power technology continues to develop and progress, to automatically detect and display the current, and over current, over voltage and other hazards happens with automatic protection and more advanced intelligent control with sensor detection, sensor sampling, Power Sensor trend towards protection, testing current or voltage sensors have come into being by the great majority in our country has the power designers, this paper introduces the ABB company’s current sensors.

2, current sensor works [1] ABB’s current sensor can measure all types of current, from DC to tens of kHz AC, its working principle is mainly based on Hall effect, shown in Figure 1.

When the primary conductor through the current sensor, the primary current I P  Produce magnetic field lines , the primary focus on core magnetic field lines around the air gap built into the core of the Hall electrode can produce and the primary is proportional to the size of the magnetic field lines just a few millivolts of the voltage, the electronic circuit can this tiny signal into secondary side current I S   , and there is the following relation

Which I S  ? Vice-edge current; I P  ? The primary current; N P  ? The primary number of turns;

N S  ? Vice-side coil turns; N P  / N S  ? Turns ratio, and generally the N P  = 1.

Current sensor output signal is the current Vice-side I S  It with the input signal (the primary current I P  ) Is proportional to I S  Generally small, only 100 ~ 400mA. If the output current through the measurement of resistance R M  , You can get a current proportional to the size of the primary as a few volts of output voltage signal.

Three main parameters of current sensors [1] [2] [3] [4]

1, the standard rating I PN  And rated output current I SN

I PN  Current sensor can test that the standard rating, with RMS that (Arms), I PN  The size of the sensor model.

I SN  Means the current sensor rated output current, typically 100 ~ 400mA, some models may vary.

2, sensor supply voltage V A

V A  Means the current sensor supply voltage, it must be provided in the sensor range. Over this range, the sensor does not work or reduce the reliability of the other, the sensor supply voltage V A  Divided into positive supply voltage V A  + And the negative supply voltage V A  -.

3, measuring range I pmax Current sensor measurement range that can measure the maximum current value, measuring range is generally higher than the standard rating I PN  . Measuring range can be calculated

Should pay attention to single-phase power supply of sensors, the power supply voltage V Amin  Is a two-phase supply voltage V Amin  2 times, so its measurement range than two-phase power supply sensors.

4, overload Current sensor overload See Figure 2. Occurrence of current overload, the measurement scope, the primary current will increase and overload current duration may be shorter and the overload value is likely to exceed the sensor allows the value of overload current values of sensors generally measure does not come out, but not will damage the sensor.

5, precision Hall effect sensor accuracy depends on the standard rated current I PN  . At +25 , the sensor accuracy affected by the primary current curve shown in Figure 3, the accuracy can be calculated using the following formula

Which K  = N  S / N P  .

Accuracy must be considered when the current offset, linearity, temperature drift effects.

(1). Offset current I SO Offset current is also called residual current or residual current, it is mainly from the Hall element or an electronic circuit operational amplifier instability caused by working conditions. Current sensors in production, at 25 , I P  = 0 case, the offset current has been to the minimum, but left the production line sensor will produce a certain size offset current. Products mentioned in the accuracy of technical documentation has been considered the offset current increases in.

(2). Linearity See Figure 4, the linearity determines the sensor output (secondary side current I S  ) And the input signal (the primary current I P  ) Within the measurement is proportional to the degree, ABB’s current sensor linearity is better than 0.1%.

(3). Temperature drift Offset current I SO  Is calculated at 25 , when the Hall electrodes surrounding temperature changes, I SO  Will make a difference. Therefore, considering the current offset I SO  The biggest change is very important, which can be calculated

Which, CV (Catalogue value) is the current sensor temperature drift performance of the table values, for example: CS2000BR type is, CV is 0.5 × 10 —– -4 / , the maximum temperature T max  To -40 , rated output current of 400mA, the maximum offset current changes.

4, sensor type, structure and installation method

Survey, China Screen Printing Industry by manufacturers several types of product order: signs and panels, textiles and clothing, plastic sheets, advertising materials, printed circuit, light boxes. Screen printing to some emerging areas of extraordinary rate, such as building materials, card, CD, security printing and so on.

1. Advertising printing Screen printing in the commercial market will have more, some large companies, especially electric company, tobacco company to promote its image very seriously the role of advertising. Advertising time and to some extent determine the quality of the company’s share of the market. So all kinds of electrical advertising, packaging, advertising, outdoor advertising, advertising to the screen printing provides a wide space. In the commercial competition, since a large outdoor advertising wide perspective, effective and taken seriously. Therefore, our screen printing large color outdoor advertising along with the development of commercial advertising, the increasing volume showed large, cheap, colorful, long storage, fast delivery and other advantages, more and more cities are planning department , Advertising Management Accreditation, attracted a lot of advertisers.

2. Packaging and Printing Screen printing industry, packaging industry is the main target, screen printing technology continues to develop applications that will better serve the packaging and decorating industry for packaging and decorating industry to contribute to a more prosperous, but also for the screen printing industries and the broader market. Such as the Indian high-end boxes, bottles, cigarette packets, wine bag side.

Particularly large packaging and product decoration, the same as the goods enter the market, appeared in front of customers. If the case of large electrical appliances with a beautiful silk screen printing process, these large decorative shell products anywhere, shopping malls, will be favored by the customers, play an irreplaceable packaging advertising advocacy role. Large packaging and product color printing is a very easy case, large color screen printing of the development so large carton packaging and large electrical appliances decorative shell color image for the product to increase the bright colors, the development of this project with dazzling bright prospects. With the continuous development of computer technology, a variety of software emerging, in particular, education, culture and entertainment, television movies and a variety of publications, increasing the output of CD discs.

This CD disc logo, images, text printing is 90% of the way using screen printing. Screen printing equipment, low investment, low cost, convenient plate, suitable for CD, and more varieties of printing features.

3. Handicraft printing With the western development and rural urbanization, tile production line to increase the momentum. It is estimated that the product may be consumed daily in the country 10 000 Silk Screen. In addition, China is a ceramic power, in addition to meet the large demand for domestic but also exported to more than 150 countries and regions, thus Ceramic Decal Screen Printing Screen Printing Industry in China, important.

2003, the imitation of natural stone series ceramic tile concern. Dual-pressure technology, the new series has a slate, marble and other natural appearance and texture can be done in different departments and regions, and has uneven texture. Currently only five manufacturers in the world with this technology. Each tile in line with the golden section proportion visually comfortable. In production using the latest inkjet technology, the tile surface with good gloss, which is a screen-printing technology, and products do not touch, through accurate inkjet system to print images to the four sides, without trimming. The use of advanced technology, designers are more realistic pattern pen, even a fine display of the tile. Combined with the latest screen printing technology, ceramic tile has gone beyond the original concept of public health, and life tiles, ceramic tiles and stylish closer together.

4. Circuit printing Screen printing in the electronics industry share of 80%. Such as the production of a television, a lot of places to use screen-printing, screen (PALC) and other large flat panel display devices become increasingly inseparable from the development of screen printing. If POP board by the applied voltage to the xenon gas to discharge, issued by the ultraviolet light to the fluorescent body, the converted into visible light. Such as the use of screen printing and mass production of 40-type class board, next door width can reach 30 m. Such as high definition television (HDTV), 40 type-level panel, asked about his next door width of 50 m, gap accuracy of 200 m, also need to screen printing solution.

Android Apps Development ‘a new wave’ in the mobile market is predicted to be a greatest point in the mobile world. Android Application Development helps you to develop innovative and dynamic applications for mobile users.

Now days, mobile users want more functions and features in their mobile phones. The mobile developers want to meet the user demands by designing and building powerful mobile applications. Android Application Development is the best suitable option for them as Android is a powerful and natural platform to develop mobile applications. It contains a real power to completely change the look and feel, as well as the functions of a mobile device.
Some of the major benefits of Android Application Development are:

• It has been built to meet information in a quick manner and make correct user requested in turn.
• It reduces the developmental cycle, provides easy to use development tools.
• It gives the developers right to use to all services and information without any differentiation.
• Gives rich browser amenities to give better services.
• Android is Linux based so it gives easy contact to core mobile device functionality and Rich.

While choosing experts who will do this job for you, it is always a better idea to go for the experts who are part of a company. Moreover, well-organized companies manage to achieve more within a short period of time because they can enjoy the advantages of dividing labor according to the specialization of the people.

Android Application Development is a grooming business among software development companies now days. The programmers have leveraging skills and expertise in Android Application Development. It has opened up new path for the unbelievable growth of Outsourcing Android services and expertise. The companies concerned in business of Outsourcing Android services and expertise are providing cost-effective and feature-rich solutions to its client.

You can get totally customized services with the help of the developers as per your business requirements which proves the potentiality of the people that are hired.

Once you get on hiring the developer for the same, you will be able to save lot of time, as well as capital, as with such type of hiring, you do not have to pay the in-house employees hired by you, but have to pay only for the services that you hire. Thus, you can get good development services at very reasonable prices for your business development.

About Author:
Author has 5 year of experience in writing articles and working as iphone application development at fusion informatics, we provide ipad application development, mobile apps development, Android apps development, blackberry apps development, window mobile apps development at fusioninformatics.com

The scope of ductile iron application can be divided into four fields: First, pressure pipes and fittings. Second, the automobile industry. Third, agriculture, road and construction applications. Fourth, general engineering.

1. Pressure pipes and fittings

Ductile iron pipe has been used to transport water and other liquids, which testifies to the ball better than gray cast iron pipe. Because cast iron has excellent strength and toughness. These physical characteristics make the pipeline withstand the high operating pressure, and can withstand the excavation near pipelines and municipal construction and transportation requirements.

2. Automotive applications

The automotive industry is the second largest ductile iron casting application fields. Ductile iron has been used in cars in the three main areas: first, the car engine parts, second, gears and bushings, third, suspension, brakes and steering. Almost all crankshafts of the Ford Motor Company have been manufactured by ductile iron. Most of the worldwide cars are fitted with ductile iron crankshaft, instead of forged steel crankshaft.

3. Agriculture, road and construction applications

Modern agriculture requires a reliable and long service life of agricultural machinery. The entire agricultural industry are widely using ductile iron castings including tractor parts, plows, brackets, clamps and pulleys. For other types of agricultural machinery including bulldozers, moved into machines, cranes and compressors, ductile iron castings in these areas have a very wide range of applications.

4. General engineering applications

The machine tool industry is using the excellent engineering performance of the ductile iron to design complex machine parts. Ductile iron has high tensile strength and yield strength, and good mechanical processing properties, thus allowing production of lighter castings to keep a good rigidity. Similarly, the strength and toughness of ductile iron has made it to be widely used in all kinds of hand tools such as wrenches, clamps and gauges etc.

Paper manufacturing industry is using the high strength and high elastic modulus of ductile iron. These properties can reduce the weight of the pressure drum and drying drum.

Therefore, ductile iron castings have been widely used in many industrial areas worldwide. With the continuous development of metal founding, the application of ductile iron must be wider in the future.

 

This article was from Dandong Foundry Blog.

Galen Wang has worked in iron foundry for many years.

Abstract: This paper systematically introduces the ABB, the basic principle of current sensors, circuits, model, parameters, installation, calculation and calibration methods, factors and current sensor in power technologies and application prospects of the importance of .

  I. Introduction With the expansion of the urban population and the scale of construction, the increase of various electrical equipment, electricity consumption increases, the city often overload the power supply equipment, power has become increasingly harsh environment , on the power of “test” more and more serious. According to statistics, daily, electric equipment have been about 120 times the power problems of various intrusive, electronic equipment from power failures 60% [7]. Therefore, the growing importance of power issues prominent. Originally as a supporting role, more power with less capital investment by manufacturers and researchers, attention, power technology thus developed into a new technology.

Today, small power equipment has been integrated more and more new technology. For example, switching power supply, hard switching, soft switching, parameter regulation, linear feedback regulator, magnetic amplifier technology, numerical control pressure regulator, PWM, SPWM, electromagnetic compatibility and so on. Direct promotion of the actual needs of the power technology continues to develop and progress, to automatically detect and display the current, and over current, over voltage and other hazards happens with automatic protection and more advanced intelligent control with sensor detection, sensor sampling, Power Sensor trend towards protection, testing current or voltage sensors have come into being by the great majority in our country has the power designers, this paper introduces the ABB company’s current sensors.

2, current sensor works [1] ABB’s current sensor can measure all types of current, from DC to tens of kHz AC, its working principle is mainly based on Hall effect, shown in Figure 1.

When the primary conductor through the current sensor, the primary current I P  Produce magnetic field lines , the primary focus on core magnetic field lines around the air gap built into the core of the Hall electrode can produce and the primary is proportional to the size of the magnetic field lines just a few millivolts of the voltage, the electronic circuit can this tiny signal into secondary side current I S   , and there is the following relation

Which I S  ? Vice-edge current; I P  ? The primary current; N P  ? The primary number of turns;

N S  ? Vice-side coil turns; N P  / N S  ? Turns ratio, and generally the N P  = 1.

Current sensor output signal is the current Vice-side I S  It with the input signal (the primary current I P  ) Is proportional to I S  Generally small, only 100 ~ 400mA. If the output current through the measurement of resistance R M  , You can get a current proportional to the size of the primary as a few volts of output voltage signal.

Three main parameters of current sensors [1] [2] [3] [4]

1, the standard rating I PN  And rated output current I SN

I PN  Current sensor can test that the standard rating, with RMS that (Arms), I PN  The size of the sensor model.

I SN  Means the current sensor rated output current, typically 100 ~ 400mA, some models may vary.

2, sensor supply voltage V A

V A  Means the current sensor supply voltage, it must be provided in the sensor range. Over this range, the sensor does not work or reduce the reliability of the other, the sensor supply voltage V A  Divided into positive supply voltage V A  + And the negative supply voltage V A  -.

3, measuring range I pmax Current sensor measurement range that can measure the maximum current value, measuring range is generally higher than the standard rating I PN  . Measuring range can be calculated

Should pay attention to single-phase power supply of sensors, the power supply voltage V Amin  Is a two-phase supply voltage V Amin  2 times, so its measurement range than two-phase power supply sensors.

4, overload Current sensor overload See Figure 2. Occurrence of current overload, the measurement scope, the primary current will increase and overload current duration may be shorter and the overload value is likely to exceed the sensor allows the value of overload current values of sensors generally measure does not come out, but not will damage the sensor.

5, precision Hall effect sensor accuracy depends on the standard rated current I PN  . At +25 , the sensor accuracy affected by the primary current curve shown in Figure 3, the accuracy can be calculated using the following formula

Which K  = N  S / N P  .

Accuracy must be considered when the current offset, linearity, temperature drift effects.

(1). Offset current I SO Offset current is also called residual current or residual current, it is mainly from the Hall element or an electronic circuit operational amplifier instability caused by working conditions. Current sensors in production, at 25 , I P  = 0 case, the offset current has been to the minimum, but left the production line sensor will produce a certain size offset current. Products mentioned in the accuracy of technical documentation has been considered the offset current increases in.

(2). Linearity See Figure 4, the linearity determines the sensor output (secondary side current I S  ) And the input signal (the primary current I P  ) Within the measurement is proportional to the degree, ABB’s current sensor linearity is better than 0.1%.

(3). Temperature drift Offset current I SO  Is calculated at 25 , when the Hall electrodes surrounding temperature changes, I SO  Will make a difference. Therefore, considering the current offset I SO  The biggest change is very important, which can be calculated

Which, CV (Catalogue value) is the current sensor temperature drift performance of the table values, for example: CS2000BR type is, CV is 0.5 × 10 —– -4 / , the maximum temperature T max  To -40 , rated output current of 400mA, the maximum offset current changes.

4, sensor type, structure and installation method

Survey, China Screen Printing Industry by manufacturers several types of product order: signs and panels, textiles and clothing, plastic sheets, advertising materials, printed circuit, light boxes. Screen printing to some emerging areas of extraordinary rate, such as building materials, card, CD, security printing and so on.

1. Advertising printing Screen printing in the commercial market will have more, some large companies, especially electric company, tobacco company to promote its image very seriously the role of advertising. Advertising time and to some extent determine the quality of the company’s share of the market. So all kinds of electrical advertising, packaging, advertising, outdoor advertising, advertising to the screen printing provides a wide space. In the commercial competition, since a large outdoor advertising wide perspective, effective and taken seriously. Therefore, our screen printing large color outdoor advertising along with the development of commercial advertising, the increasing volume showed large, cheap, colorful, long storage, fast delivery and other advantages, more and more cities are planning department , Advertising Management Accreditation, attracted a lot of advertisers.

2. Packaging and Printing Screen printing industry, packaging industry is the main target, screen printing technology continues to develop applications that will better serve the packaging and decorating industry for packaging and decorating industry to contribute to a more prosperous, but also for the screen printing industries and the broader market. Such as the Indian high-end boxes, bottles, cigarette packets, wine bag side.

Particularly large packaging and product decoration, the same as the goods enter the market, appeared in front of customers. If the case of large electrical appliances with a beautiful silk screen printing process, these large decorative shell products anywhere, shopping malls, will be favored by the customers, play an irreplaceable packaging advertising advocacy role. Large packaging and product color printing is a very easy case, large color screen printing of the development so large carton packaging and large electrical appliances decorative shell color image for the product to increase the bright colors, the development of this project with dazzling bright prospects. With the continuous development of computer technology, a variety of software emerging, in particular, education, culture and entertainment, television movies and a variety of publications, increasing the output of CD discs.

This CD disc logo, images, text printing is 90% of the way using screen printing. Screen printing equipment, low investment, low cost, convenient plate, suitable for CD, and more varieties of printing features.

3. Handicraft printing With the western development and rural urbanization, tile production line to increase the momentum. It is estimated that the product may be consumed daily in the country 10 000 Silk Screen. In addition, China is a ceramic power, in addition to meet the large demand for domestic but also exported to more than 150 countries and regions, thus Ceramic Decal Screen Printing Screen Printing Industry in China, important.

2003, the imitation of natural stone series ceramic tile concern. Dual-pressure technology, the new series has a slate, marble and other natural appearance and texture can be done in different departments and regions, and has uneven texture. Currently only five manufacturers in the world with this technology. Each tile in line with the golden section proportion visually comfortable. In production using the latest inkjet technology, the tile surface with good gloss, which is a screen-printing technology, and products do not touch, through accurate inkjet system to print images to the four sides, without trimming. The use of advanced technology, designers are more realistic pattern pen, even a fine display of the tile. Combined with the latest screen printing technology, ceramic tile has gone beyond the original concept of public health, and life tiles, ceramic tiles and stylish closer together.

4. Circuit printing Screen printing in the electronics industry share of 80%. Such as the production of a television, a lot of places to use screen-printing, screen (PALC) and other large flat panel display devices become increasingly inseparable from the development of screen printing. If POP board by the applied voltage to the xenon gas to discharge, issued by the ultraviolet light to the fluorescent body, the converted into visible light. Such as the use of screen printing and mass production of 40-type class board, next door width can reach 30 m. Such as high definition television (HDTV), 40 type-level panel, asked about his next door width of 50 m, gap accuracy of 200 m, also need to screen printing solution.

Android Apps Development ‘a new wave’ in the mobile market is predicted to be a greatest point in the mobile world. Android Application Development helps you to develop innovative and dynamic applications for mobile users.

Now days, mobile users want more functions and features in their mobile phones. The mobile developers want to meet the user demands by designing and building powerful mobile applications. Android Application Development is the best suitable option for them as Android is a powerful and natural platform to develop mobile applications. It contains a real power to completely change the look and feel, as well as the functions of a mobile device.
Some of the major benefits of Android Application Development are:

• It has been built to meet information in a quick manner and make correct user requested in turn.
• It reduces the developmental cycle, provides easy to use development tools.
• It gives the developers right to use to all services and information without any differentiation.
• Gives rich browser amenities to give better services.
• Android is Linux based so it gives easy contact to core mobile device functionality and Rich.

While choosing experts who will do this job for you, it is always a better idea to go for the experts who are part of a company. Moreover, well-organized companies manage to achieve more within a short period of time because they can enjoy the advantages of dividing labor according to the specialization of the people.

Android Application Development is a grooming business among software development companies now days. The programmers have leveraging skills and expertise in Android Application Development. It has opened up new path for the unbelievable growth of Outsourcing Android services and expertise. The companies concerned in business of Outsourcing Android services and expertise are providing cost-effective and feature-rich solutions to its client.

You can get totally customized services with the help of the developers as per your business requirements which proves the potentiality of the people that are hired.

Once you get on hiring the developer for the same, you will be able to save lot of time, as well as capital, as with such type of hiring, you do not have to pay the in-house employees hired by you, but have to pay only for the services that you hire. Thus, you can get good development services at very reasonable prices for your business development.

About Author:
Author has 5 year of experience in writing articles and working as iphone application development at fusion informatics, we provide ipad application development, mobile apps development, Android apps development, blackberry apps development, window mobile apps development at fusioninformatics.com

The scope of ductile iron application can be divided into four fields: First, pressure pipes and fittings. Second, the automobile industry. Third, agriculture, road and construction applications. Fourth, general engineering.

1. Pressure pipes and fittings

Ductile iron pipe has been used to transport water and other liquids, which testifies to the ball better than gray cast iron pipe. Because cast iron has excellent strength and toughness. These physical characteristics make the pipeline withstand the high operating pressure, and can withstand the excavation near pipelines and municipal construction and transportation requirements.

2. Automotive applications

The automotive industry is the second largest ductile iron casting application fields. Ductile iron has been used in cars in the three main areas: first, the car engine parts, second, gears and bushings, third, suspension, brakes and steering. Almost all crankshafts of the Ford Motor Company have been manufactured by ductile iron. Most of the worldwide cars are fitted with ductile iron crankshaft, instead of forged steel crankshaft.

3. Agriculture, road and construction applications

Modern agriculture requires a reliable and long service life of agricultural machinery. The entire agricultural industry are widely using ductile iron castings including tractor parts, plows, brackets, clamps and pulleys. For other types of agricultural machinery including bulldozers, moved into machines, cranes and compressors, ductile iron castings in these areas have a very wide range of applications.

4. General engineering applications

The machine tool industry is using the excellent engineering performance of the ductile iron to design complex machine parts. Ductile iron has high tensile strength and yield strength, and good mechanical processing properties, thus allowing production of lighter castings to keep a good rigidity. Similarly, the strength and toughness of ductile iron has made it to be widely used in all kinds of hand tools such as wrenches, clamps and gauges etc.

Paper manufacturing industry is using the high strength and high elastic modulus of ductile iron. These properties can reduce the weight of the pressure drum and drying drum.

Therefore, ductile iron castings have been widely used in many industrial areas worldwide. With the continuous development of metal founding, the application of ductile iron must be wider in the future.

 

This article was from Dandong Foundry Blog.

Delphi is considered as the most powerful Rapid Application Development (RAD) tool developed by Borland, and supports full OOP concepts enhancing reusability and ease of use and comes with an integrated IDE. The Delphi Application had been migrated and provides some advantage over the existing application. Delphi application migration rapidly building high performance application by leveraging Dot Net time saving IDE and object-oriented tools, thereby providing shorter time to market. The client used to get continuous feedback and customization requirements from companies, trade shows, and partners and all this went on during the course of development process. Delphi application migration efficiently connects with all the data across multiple sources and tiers. Delphi application migration builds in quality with unit testing and debugging through C# Dot Net. The client’s migration requirement of Design & Estimation application is currently provided by Borland Delphi 8. Delphi application migration is easy to use and implement, highly automated, provides user interface. It also provides quick and useful conversion of code fragments. You can easily convert standalone functions, forms definitions; SQL statements etc Delphi application migration can be customized and comes with optimized conversion that too at very low cost. Delphi application migration dramatically reduces development time and is quite friendly. Delphi migration services can operate in multiple platforms and adds flexibility, speed and eminence to your existing delphi application development.

There are many software developers in India that are well-experienced in working on all types of custom software programs for all the clients worldwide. These software companies are mostly located in India and they provide mostly the outsourcing services. You would save on costs, time and effort if you outsource your software development requirements.

Mindfire Solutions is a pioneer in Delphi application migration services. We are an Indian software consultant company known for our authoritative capability in offering result-oriented solutions for SMEs across the globe. Mindfire Solutions offers its Delphi Expertise for offshore software development services such as application, process and product design, development, implementation, maintenance, re-engineering, testing and customization. We can develop and deliver Delphi application under your timeline and budget. The services offered by us in Delphi customization services are:

Delphi 5, 6, 7 Application Development

Database Application Development using Delphi

Mobile Application Development using Delphi

Delphi Web development services

Delphi Game development services

Delphi .NET development services

Delphi Enterprise Application Development

Delphi based Product Development

Delphi Application Migration

Delphi Application Support and Maintenance

Delphi application re-engineering

 

 

If you would like to outsource your Delphi migration services then please Contact Us to work out or call us at 1-248-686-1424. We will be glad to share our expertise with you.

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