Load Cell Junction Box/Amplifier/Weight transmitter/Conversion

The digital junction box is based on resistance strain sensor as signal source, It is composed of 24bits Σ-Δ type A/D conversion technology and The 8 bit single chip microcomputer etc.large-scale integrated circuit. It is with high accuracy, high reliability. 

Main functions:

¨ panel keyboard settings, capacity calibration

¨ Has function to display weight setting. 

¨ Can point out failures, operational error.

¨ 4~20mA/RS485/RS232 output,Can set the corresponding weight value of 4mA and 20mA. 

2. Main Technical Parameters

¨ 2.1 A/D sampling rate:  7.5 Times/s~240Times/s optional

¨ 2.2 Internal resolution:  24bits

¨ 2.3 Non-linearity:  ≤0.005%F.S

¨ 2.4 Zero drift:  ≤0.2μV/℃

¨ 2.5 Temperature coefficient of capacity:   ≤10ppm/℃

¨ 2.6 Net input signal range of full capacity:   2~20mV

¨ 2.7 Initial weight signal range: -1~+9mV

¨ 2.8 Analog input signal sensitivity:0.5uV /d(Minimum)

          1.5uV/d(Recommended)

¨ 2.9 Zeroing range: 100%FS

¨ 2.11 Display: 6 red LED digital tubes(height of word is 14mm

¨ 2.14 Amibent temperature of operation: -5℃~ 45℃

¨ 2.15 Relative humidity: ≯ 90%(Non condensing)

¨ 2.16 Power supply: +18 ~ +26 VDC,0.5A

2.17 Sensor bridge excitation: DC 5V,can connect 6 load cells of 350 ohms or 12 load cells of 750 ohms.