The weighing module amplifies the weak analog signal output by the sensor by a certain multiple to meet the requirements of the A/D converter for the input signal level. The function of A/D conversion is to convert analog signals into digital signals, carry out analog-to-digital conversion, then send the digital signals to the display circuit, and finally display the measurement results by the display circuit.
020-34563445The weighing module is based on the principle of full-bridge measurement, and through the linear relationship between the output voltage of the circuit and the standard weight, the voltage dimension V is changed to the weight dimension G, which becomes an original Electronic scale. Among them, the most important component in the measuring circuit is the resistance strain weighing module.
Full-bridge measuring circuit is used as the most widely used metering module, which makes the system produce smaller errors and output more accurate data. The function of the three-operation amplifier circuit is to amplify the weak analog signal output by the sensor by a certain multiple to meet the requirements of the A/D converter for the input signal level. The function of A/D conversion is to convert analog signals into digital signals, carry out analog-to-digital conversion, then send the digital signals to the display circuit, and finally display the measurement results by the display circuit.
The weighing module adopts the electronic weighing device integrating modern sensor technology, electronic technology and computer technology, so as to meet and solve the "fast, accurate, continuous and automatic" weighing requirements put forward in real life, and at the same time effectively eliminate human errors, making it more in line with the application requirements of legal metrology management and industrial production process control.
technical parameter
Accuracy grade: 0.02%
Rated range (kg): 110, 220, 550, 1100, 1760.
Sensitivity (mV/V): 1.94
Sensitivity error range (%): 0.1000
Effect of temperature on sensitivity (%of cn/10k): 0.0140.
Influence of temperature on zero point (%of cn/10k): 0.0140
Nonlinear error (%of Cn):±0.0170
Lag error (%of Cn): ±0.0170
Creep and creep recovery for 30min s (%/30min): 0.0166.
Zero point balance (MV/V): 0 0.01
Input resistance (ω): 400 50
Output resistance (ω): 350 0.12
Reference voltage (V):5
Maximum working voltage (V): 5 ... 15
Insulation resistance (Gω/100 V): > 5
Rated temperature range (℃):-10 ~+40
Working temperature range (℃):-30 ~+70.
Storage temperature range (℃):-50 ~+85.
Safe bearer (%of Emax):150
Ultimate bearing capacity (%of Emax):100
Rated load Emax(% of Emax):300
Allowable dynamic load (%of Emax):70
Maximum load deformation (mm):0.5
Weight (kg):0.9
Protection grade: P68
