Shengdanjiwe

,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا]
Six-wire load cell manufacture and use should pay attention to the problem


To use two different input and output wiring methods: one is the four-wire connection,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], the other is the six-wire connection (Figure 1). Four-wire connection of the load cell on the secondary instrument without special requirements,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], more convenient to use,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], but when the cable is longer vulnerable to temperature fluctuations and other factors; six-wire load cell connection requirements accompanying the use of secondary instrument with the feedback input interface, use of certain limitations. But not susceptible to environmental temperature fluctuations and other factors , in precision measurement and long-distance measurements have certain advantages. R Output (+) output (a) (1) four-wire connection incentives (+) excitation (a) incentives (+) feedback (+) excitation (a) feedback (a) output (+) output (a) (2) The six-wire load cell connection 1 input and output of two different connection present,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], there are a lot of the load cell manufacturers also produce two different formats of the load cell. But we in contact with some sensor manufacturers have discovered a surprising fact: Some companies do not compensate for the manufacturing process to make any changes,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], just by simply switching to quad or six-cell line to produce four-wire or six-wire load cell . Nor described in the user manual six-wire load cell connection or wrong use of limited potential use of measurement error. Recommended for manufacturers and users to focus on the following three questions: 1. Manufacturing process must pay attention to cable as an important part of the sensor. Measure the performance of the sensor has an important impact. As the cable itself is made using copper wire. The temperature coefficient of resistance of copper about four ten thousandths. For the four-wire connection in terms of load cell. Cable not only the existence of impact resistance due to their own output of the sensor sensitivity coefficient. And because the cable itself,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا],[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], the resistance changes with temperature. Will also affect the sensitivity of the sensor temperature. So. Compensation in the load cell cable into the compensation must be taken into account box. But for the six-wire load cell connection in terms of. Because the presence of feedback lines. Cable does not affect the sensitivity coefficient of the sensor output. Therefore, when the load cell can not compensate for the cable box into the compensation taken into account. Otherwise,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا],[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا],[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], the sensor will have a serious over-compensation. For example,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], an input impedance of 380Q. Cable length is 10m (if the line resistance of 2x1.5 = 3Q). The compensation of approximately 562,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا],006.8 China had measured 0.015% / 10 ~ C,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا],[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], which has far exceeded the requirements of the load cell C3 level. As the temperature difference between summer and winter in most parts of China in about 40 ℃, which will bring electronic scales weighing error of 0.06%. 2. The course must pay attention to the use of more than one load cell electronic weighing, since usually need to adjust the connection box in parallel after receiving the go weighing instruments,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], therefore,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], not suitable for six-wire load sensor. Many domestic factories still all kinds of electronic weighing scales in the inappropriate use of six-wire sensor, simply six-wire load cell according to the four-wire load cell connection access debug box, and then six-lane connection access control in the weighing instrument. In fact this connection completely destroyed the load cell compensation effect of electronic scales in the winter due to temperature differences between summer and have a huge weighing error. Accurate method is to use the feedback line load cell weighing instrument directly access the feedback line port. Junction box will not allow the same polarity in the incentive and feedback line shorted. 3 - 4 barium examination process must pay attention to six-wire load cell test can not be used for precision digital voltmeter. The interface must be active with feedback instrumentation. Commonly used DMP39, DK38,[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا],[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا],[عزيزي الزائر يتوجب عليك التسجيل لمشاهدة الرابط للتسجيل اضغط هنا], MGCPlus and other German-made precision digital measuring instrument and made a number of special test instruments. Testing must ensure that each wire load cell connected directly to the corresponding port of the measuring instrument. Author Research Institute of Metrology [Fujian] aim

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