Air flow and velocity transmitters

flow transmitter

DPT-Flow

DPT-Flow is a flow transmitter that provides a new and easy way to measure the flow rate on centrifugal fans.

One device is suitable for a range of different fan types. It also provides an easy way to measure flow rate in a duct system. The device is supplied with an optional FloXactTM averaging measurement probe.

 

Usage

 

The DPT-Flow is designed for air handling units to measure the air flow on centrifugal fans. The DPT-Flow can be used as an on-site display for flow or as a transmitter to regulate the air flow on a selected fan or blower.

 

The DPT-Flow can also be used in the duct system or in air handling units as an on-site display for flow or as a transmitter to regulate the air flow in a duct. The device can be used with several different measurement probes such as FloXactTM or pitot tube, and air dampers. The requirement is that the K-value of the measurement probe or damper is known.

 

Watch a video about how to configure DPT-Flow:

 

 

Technical details

Accuracy (from applied pressure):
(models 1000 and 2000)		 Pressure < 125 Pa = 1 % + ±2 Pa
Pressure > 125 Pa = 1 % + ±1 Pa
Accuracy (from applied pressure):
(models 5000 and 7000)		 Pressure < 125 Pa = 1.5 % + ±2 Pa
Pressure > 125 Pa = 1.5 % + ±1 Pa
Zero point calibration: automatic with autozero element (-AZ) 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 VAC ±10 % / 24 VDC ±10 %
Power consumption: < 1,0 W
Output signals for pressure and air flow (selectable by jumper): 0…10 VDC / 2...10 VDC
4…20 mA
Operating temperature: -20…+50 °C (with autozero calibration -5...+50 °C)
-40...+50 °C (-40C model)
Response time: 1...20 s
Protection standard: IP54
Product datasheet Installation instructions DPT-Flow equations EU Declaration of Conformity UK Declaration of Conformity

DPT-Flow

Example
DPT-Flow-2000-AZ-D

Model

Product series

DPT-Flow
Flow transmitter for HVAC systems
DPT-Flow

Measuring ranges

-1000
0...1000 Pa
-2000
0...2000 Pa
-5000
0...5000 Pa
-7000
0...7000 Pa
-2000

Zero point calibration

-AZ
With autozero calibration
Standard with pushbutton manual zero point calibration
-AZ

Display

-D
With display
-D

Cold resistance

-40C
-40 ºC cold resistant (not available with autozero calibration)
Without -40 ºC cold resistance

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