DPT-CR-MOD is a differential pressure transmitter designed specially for cleanroom monitoring. In addition to differential pressure, the device enables monitoring temperature and relative humidity. A 0…10 V voltage input of an external humidity and temperature transmitter (for example Siro-rH-T) can be connected to the input terminal of the device. In this case, all three measured values (differential pressure, relative humidity, temperature) can be shown simultaneously on the display. Alternatively, a passive temperature sensor can be connected to the input terminal. DPT-CR-MOD is compatible with Modbus serial communication protocol.
DPT-CR-MOD is used for monitoring and controlling differential pressure, relative humidity and temperature in cleanrooms.
DPT-CR-MOD measures the pressure difference between the cleanroom and the anteroom and sends the information to the automation system via Modbus to maintain optimal conditions in the cleanroom. DPT-CR-MOD is connected to the Siro indoor air quality transmitter that measures relative humidity and temperature. Siro sends the information to DPT-CR-MOD that shows it on its display, together with differential pressure measurement.
|Communication:||RS-485 Modbus (RTU)|
|Accuracy (from applied pressure):||Pressure < 125 Pa = 1 % + ±2 Pa
Pressure > 125 Pa = 1 % + ±1 Pa
|Zero point calibration:||by pushbutton or via Modbus|
|Measuring units:||Pressure: Pa, kPa, mbar, inchWC, mmWC, psi
Temperature: °C, °F
|Supply voltage:||24 VDC ±10 % / 24 VAC ±10 %|
|Power consumption:||< 1.3 W|
|Output signal:||via Modbus|
|Operating temperature:||-20…+50 °C|
|Response time:||1...20 s selectable via menu|