Cost-efficient solution for monitoring cleanroom conditions 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. Technical details Communication: RS-485 Modbus (RTU) Accuracy (from applied pressure): Pressure < 125 Pa = 1 % + ±2 PaPressure > 125 Pa = 1 % + ±1 Pa Zero point calibration: by pushbutton or via Modbus Measuring units: Pressure: Pa, kPa, mbar, inchWC, mmWC, psiTemperature: °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 Protection standard: IP54 Technical details Communication: RS-485 Modbus (RTU) Accuracy (from applied pressure): (model 2500) Pressure < 125 Pa = 1 % + ±2 Papressure > 125 Pa = 1 % + ±1 Pa Accuracy (from applied pressure): (model 7000) Pressure < 125 Pa = 1.5 % + ±2 Pa Pressure > 125 Pa = 1.5 % + ±1 Pa Zero point calibration: via Modbus or by pushbutton Measuring units: Pa, kPa, mbar, inchWC, mmWC, psi Measuring element: MEMS, no flow-through Supply voltage: 24 VDC ±10 % / 24 VAC ±10 % Power consumption: < 1.3 W Operating temperature: -20…+50 °C Response time: 1...20 s selectable via menu Protection standard: IP54
