AIR FLOW TRANSMITTER
DPT-FLOW
Measurement ranges (pressure)
DPT Flow

Pressure range

Accuracy from applied pressure

DPT
DPT
DPT
DPT

0…1000
0…2000
0…5000
0…7000

Flow
Flow
Flow
Flow

-1000 (-D, -AZ)
-2000(-D, -AZ)
-5000 (-D, -AZ)
-7000 (-D, -AZ)

Pa
Pa
Pa
Pa

(including: general accuracy, temperature drift, linearity,
hysteresis, long term stability and repetition error).

1,5%
1,5%
1,5%
1,5%

(or ±2 Pa <125 Pa)
(or ±2 Pa <125 Pa)
(or ±2 Pa <125 Pa)
(or ±2 Pa <125 Pa)

Model summary
Model:

DPT Flow-1000 (-AZ -D)
DPT Flow-2000 (-AZ -D)
DPT Flow-5000 (-AZ -D)
DPT Flow-7000 (-AZ -D)

- D for display
- AZ for Autozero element
The Air Flow Transmitter is delivered individually packed with standard accessories (see accessories).

Technical data
Response Time: 1…20 s
Suitable media: Air and non-aggressive
gases
Measuring element: Piezoresistive
Accuracy (from applied pressure): ±1,5%
or (±2 Pa <125 Pa) (including: general
accuracy, temperature drift, linearity,
hysteresis, long term stability and repetition
error).
Electrical interface:
• Supply voltage: 24 VAC or VDC ± 10%
• Power consumption: < 1.0 W (<1.5W with
Iout 20mA)

Accessories
Standard accessories:
- 2 fixing screws
- 2 plastic duct connectors
- 2 m tube 4 / 7 mm
Optional accessories:
* Metallic duct connector

Output signals for pressure and air
volume (selectable by jumper):
0…10 VDC, Load R minimum 1kΩ or
4…20 mA, maximum load 500Ω
Materials:
• Housing: ABS
• Cover: PC
• Pressure connections: ABS
• Duct connectors: ABS
• Tubing: PV
Connections:
• Electrical connections: 4 screw terminals,
max 1.5 mm2
• Cable entry: M16
• Pressure connections: Male 5,0 mm

and 6,3 mm
Weight: 150 g, with accessories 290 g
Dimensions: 90,0 x 71,5 x 36,0 mm
General ambient condition:
• Temperature range:
- Operation -10…+50°C (-5…+50°F for –AZ
model)
- Storage: -20…+70°C
- Ambient humidity: 0 to 95% RH
Safety:
• Protection standard: IP54
• Conformance: Meets the requirements for CE
marking:
- EMC directive 2004/108/EY
- Rohs Directive 2002/95/EY

Zero-point adjustment

Optional auto zero element *

Note! Supply voltage must be connected one
hour before the 0-point adjustment is carried out.

Optional auto zero element makes the DPT
transmitter maintenance free for periodical push
button zeroing. Element automatically adjusts the
transmitters zero point from time to time, this
eliminates the zero point long term drift of the
piezoresistive sensing element.

1) Loose both tubes from the pressure inlets +
and –
2) Push zero button until the red led turns ON.
3) Wait until LED turns off and then install tubes
again to the pressure inlets
It is recommended to adjust the zero point every
12 months during normal operation
* If the transmitter is equipped with automatic zero element the
manual push button adjustment is not required.

Keihästie 7, 40950 Muurame,
Finland

Zero point adjustment is carried out every 10
minutes. During zero point adjustment the output
and display values will freeze to the latest
measured value. The automatic zero point
adjustment takes 4 seconds.

Phone: +358 14 337 2000
Fax: +358 14 337 2020
Email: info@hkinstruments.fi
www.hkinstruments.fi