Differential Pressure Transmitter – HK Instruments DPT-Dual-MOD Series

Features

  • 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
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Differential pressure transmitter with two pressure sensors for air and an Input terminal for two analog inputs for external signal conversion into Modbus

DPT-Dual-MOD combines two differential pressure transmitters into one device. It offers a possibility to measure pressure from two different points. It 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. The AHU model that includes an air flow transmitter has been designed especially for ventilation units.

Applications

DPT-Dual-MOD series devices are commonly used in HVAC/R systems for:

  • Fan, blower and filter monitoring
  • Pressure and flow monitoring
  • Valve and damper control
  • Pressure monitoring in cleanrooms

DPT-Dual-MOD-AHU can also be used for:

  • Air flow monitoring across centrifugal fans and blowers
  • In-duct air flow monitoring
  • VAV applications

Specification

Communication: RS-485 Modbus (RTU)
Accuracy (from applied pressure): Pressure < 125 Pa = 1 % + ±2 Pa
(model 2500) Pressure > 125 Pa = 1 % + ±1 Pa
Accuracy (from applied pressure): Pressure < 125 Pa = 1.5 % + ±2 Pa
(model 7000) Pressure > 125 Pa = 1.5 % + ±1 Pa
Zero point calibration: via Modbus or by pushbutton
Measuring units: Pressure: Pa, kPa, mbar, inchWC, mmWC, psi
Flow: (AHU model) m3/s, m3/hr, cfm, l/s, m/s, ft/min
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

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HK Instruments DPT-Dual-MOD Series Differential Pressure Transmitter-DpstarGroup

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