Wireless Remote Control Directly Displayed Electronic Crane Scale Electronic Industrial Large Range Hook Scale

Why is it recommended that a load cell be used in conjunction with a transmitter?

Answer:Because the resistance strain load cell is made of an elastic element to withstand the force and deformation, so that it is affixed to the internal deformation also occurs, thus preventing the change. Under the same input voltage, the output signal is mV signal (tiny signal). mV signal is very tiny, easy to be transmitted by the lead (resistance), strong voltage and current (electromagnetic) interference, can not be transmitted far away, and is not a standard signal, can not be most of the secondary instrumentation, PLC, DCS by the collection. The transmitter can transmit the sensor signal into standard 4-20mA signal, strong anti-interference ability, suitable for signal transmission within 0-100m, and easier to be accepted and collected. So we recommend you to buy load cell with load transmitter.

Under what circumstances should the load cell be used with a junction box?

Answer:The junction box is designed for analog load cells, because the consistency of the load cells is not always ideal when they are shipped from the factory, plus the environmental factors and the limitations of the installation means in the field, which bring imbalance problems to the parallel weighing group of several load cells.

In order to solve the above problems, the junction box must be used to adjust the sensor coefficient and sensor output impedance ratio (mV/V/Q) close to the same, so as to ensure that the entire scale of peace.

The main role of the junction box is to summarize the signal and adjust the angular difference, if you do not use the junction box, the signal can be received normally, but as a multi-sensor system, the output of each sensor may have some differences, which can be adjusted through the adjustable resistance within the junction box to achieve a balanced state.

Is it possible to increase the sensitivity of miniature parallel beam load cell from 1mv/v to 2mv/v ?

Answer:Theoretically it is possible. However, if the position of the strain zone on the sensor is particularly small, and you want a large sensitivity, you have to thin the strain beam, so the steel is not enough, and the sensitivity can not be increased.

4., an important parameter of the load cell ---- sensitivity ?

Answer: We often see the sensitivity of the load cell parameters so marked: 2.0 ± 0.002mv/v, what does this parameter mean? Sensitivity is the sensor in the rated tension (if the full scale is 200KG, its rated tension is 200KG) to do, in the excitation voltage (also known as the bridge voltage, the input voltage) is 1v, its two outputs will be 2mv of pressure change. Of course, the actual work of the excitation voltage will be greater than 1v, generally 10v to 12v. If a 200KG sensor, its sensitivity is 2 + 0.002 (mv/v), it is the excitation voltage is 10v, then in the 200KG pulling force, the pressure change of the output end is 2 * 10 = 20mv. We are in the selection of sensors, often three or four at the same time. Parallel use of each sensor must require the same sensitivity to be used at the same time. If they are not the same, the whole scale will be inaccurate, and if you put an object in different places on the same scale, it will show different weights. If in the replacement of damaged sensors, but also to find the sensitivity and range of the same sensor, other indicators can be ignored, as long as the two indicators are the same, is a different manufacturer's sensor can be used together.

How to measure the sensitivity of load cell?

Answer:The excitation voltage of the load cell is 10V, first measure the output voltage of the load cell when it is no loaded, then increase the weights to the full range when recording the output voltage, (output voltage when full loaded - output voltage when no loaded)/excitation voltage = sensitivity. Of course, this is just a reference value calculated from the numbers.