Differential pressure transmitter designed for air handling units, includes an air flow transmitter.
DPT-Dual-MOD-AHU is especially designed for air handling units, combining two differential pressure transmitters into one device. It offers a possibility to measure pressure from two different points. One of the measurements can be set to show the air flow rate. DPT-Dual-MOD-AHU has a Modbus interface and an Input terminal. When using the Input terminal, temperature transmitters can be replaced with temperature sensors. As a result, you will save in costs of the devices and in the installation costs.
DPT-Dual-MOD-AHU series devices include:
• Multiple measurement units, field selectable via menu, including: Pa, mbar, inchWC, mmWC and psi.
• Input terminal enabling reading of multiple other signals such as temperature or control relays over Modbus
Technical details
| Communication: | RS-485 Modbus (RTU) |
| Accuracy (from applied pressure): | Sensor A (-700...7000 Pa): Pressure < 125 Pa = 1.5 % + ±2 Pa Pressure > 125 Pa = 1.5 % + ±1 Pa Sensor B (-250...2500 Pa): Pressure < 125 Pa = 1 % + ±2 Pa Pressure > 125 Pa = 1 % + ±1 Pa |
| Zero point calibration: | via Modbus or by pushbutton |
| Measuring units: | Pressure: Pa, kPa, mbar, inchWC, mmWC, psi Flow: m3/s, m3/hr, cfm, l/s, m/s, ft/min |
| 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 |