I. Overview

Ø  Fully intelligent two-wire 4-20mA working mode, 5-digit LCD display.

ØThe  sensor is excited by constant current and constant voltage , constant current 0.4mA, constant voltage 2.5VDC.

Ø  ADC input range is ±5mv~±80mv, providing 24-bit core resolution, and the useful number of bits reaches 18 bits. The built-in magnification of the circuit board is 12~200 times. Support automatic polarity conversion of sensor signal.

ØSuitable  for diffused silicon pressure sensor and ceramic pressure sensor.

ØProvide the  functions of resetting the main variable, active and passive migration, 19 kinds of unit conversion, 6 kinds of display modes, display resolution adjustment, restoration of factory data and other functions, which are suitable for the special needs of various customers.

Ø  The non-linear correction function of 2 ~ 5 points can eliminate the non-linear error of the sensor.

ØFully  digital calibration, without any movable potentiometer, lower temperature drift.

ØStrengthened  anti-interference design, suitable for various industrial environments with harsh electromagnetic environments.

2. Main parameters

ØPower  supply voltage: 12~30VDC, 24VDC is recommended. The power supply changes have basically no effect.

Ø  signal range: a circuit board is ± 5mv ~ ± 80mv, corresponding to 1.5mA diffused silicon sensor output up to 320mv.

ØConstant  current excitation: 0.4mA, suitable for sensors with constant current power supply (3~8kΩ).

ØConstant  voltage excitation: 2.5VDC/0.5mA, suitable for ceramic piezoresistive sensors.

ØWorking  environment: temperature -30~80℃, humidity <85%, dry and non-corrosive environment.

ØDimensions  : 53*53*23.

ØLoad  resistance: (VCC-12)/20mA

ØCurrent  output resolution: about 1uA

ØTemperature  drift coefficient: <35ppm/℃

ØDisplay  range: -19999~99999