Differential pressure transducer

The basic function of the transducer is to measure the value of the pressure difference.

The values measured by the integrated Honeywell sensor of the ABP series, then converted and averaged in the microcontroller, are available in its memory (in the HOLDING REGISTERS) according to the MODBUS standard. The registers are read using the MODBUS protocol functions sent over the RS-485 serial interface. The registers also provide information on the currently set (configurable) measuring range, the time constant (also configurable) and the percentage of the pressure referenced to the range. The signaling of the lack of a sensor, the states of measuring range overrun, the occupancy of the transducer in the case of offset calibration is also carried out via status registers.

Device functions

• differential pressure measurement (range depending on the sensor used)

• analog voltage output 0-10 [V] (proportional to the pressure difference value)

• configuration of the output range

• configuration of the time constant of the measurement

• sensor offset zeroing function

• LED signaling device operation

• serial RS-485 interface (readout of measured values, configuration of work

parameters)

    - MODBUS RTU protocol

    - for communication in HALF DUPLEX mode

    - for a hardware configurable address (1-31)

DFF.PRSS.TRDC 6kPa/24VDC/010V/Mod