Air Handling Controller – HK Instruments DPT-Ctrl Series

Features

  • PID-controller
    • Control differential pressure or air flow in duct or across centrifugal fans
    • All parameters (PID) are adjustable via menu
  • Differential pressure or air flow transmitter (selectable via menu)
    • Measure and monitor differential pressure or air flow in duct or across centrifugal fans
  • Multiple field selectable measurement units:
    • Volume flow: m3/s, m3/h, cfm, l/s
    • Velocity: m/s, ft/min
    • Pressure: Pa, inWC, mmWC, kPa, mbar, psi
  • Unique proportional output options:
    • Control output: Voltage (0–10 V) or current (4–20 mA)
    • Differential pressure or air flow: Voltage (0–10V) or current (4–20 mA)
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DPT-Ctrl is a multifunctional PID controller with differential pressure or air flow transmitter.

DPT-Ctrl enables to control constant pressure or flow of fans, VAV systems or dampers. Its two lined display shows the direction of the control output and the measurement value at the same time. It is possible to select either current or voltage for both the control output and the differential pressure or flow output. The optional autozero function eliminates the need for periodic manual zero point calibration.

Applications

DPT-Ctrl series device options offer:

  • AZ (autozero) function for automatic zero point calibration, eliminating the need for periodic manual autozeroing
    to ensure long term accuracy

Specification

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
Measuring units: Pressure: Pa, kPa, mbar, inchWC, mmWC, psi
Flow: m3/s, m3/hr, cfm, l/s, m/s, ft/min
Control signal: 0…10 VDC
Output signal for pressure or air flow (selectable via menu): 0…10 VDC
4…20 mA
PID-parameters: Adjustable via menu
Zero point calibration: Automatic with autozero element (-AZ) or by pushbutton
Supply voltage: 24 VDC ±10 % / 24 VAC ±10 %
Power consumption: < 1.0 W
Operating temperature: -20…+50 °C (with autozero calibration -5…+50 °C)
-40…+50 °C (-40C model)
Protection standard: IP54

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HK Instruments DPT-Ctrl Series Air Handling Controller-DpstarGroup

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