Air Flow Gauges

Display

Alphanumeric display with MENU user interface
The display can be ordered separately for installation purposes.

Max. pressure

25 kPa

Bursting. pressure

50 kPa

Suitable media

Air and non-aggressive gases

Measuring element

Piezoresistive

MENU selections and initialisation instructions for installation

If buttons are not pressed within 20 seconds the device returns to the normal measuring mode.

1. Press Select > 2seconds to start the menu.

2. Selection of the manufacturer of FAN

3. Each FAN has its own specific K-value.
Please see the right K-value from the datasheet of the FAN:
Fläkt Woods.......(k=0,3…99)
Rosenberg..........(k=37…800)
Nicotra...............(c=10…1500)
Comefri..............(k=23…158)
Ziehl...................(k=10…1500)
Ebm-Papst.........(k=10…1500)

4. The unit shown on the display m3/s, m3/h or Pa

5. Output unit for defining the output scale

6. Output scale, selectable range depends on the
chosen output unit.
m3/s 10V = 5…50 m3/s
m3/h 10V = 20 000 … 200 000 m3/h
0 V is always 0 m3/s and 0 m3/h

7. Stepless response time selection.
Tr can be selected to be 1 s … 20 s.
Tr is the time when output has
changed 63 % from the final
value of the output.

8. Presse send and the device returns the normal measuring mode

Electrical interface

Supply voltage

24 VAC or VDC 10%

Power consumption

< 1.0 W

Output signal

Vout 0…10 VDC, Load R minimum 1k
Pout 0…10 VDC, Load R minimum 1k

V out scale can be changed

Materials

Housing

ABS

Cover

ABS

Pressure connections

ABS

Duct connections

ABS

Tubing

PVC, soft

Connections

Electrical connections

4 screw terminals, max 1.5 mm2

Cable entry

M16

Pressure connections

Male ø 5,0 mm and 6,3 mm

General Ambient Condition

Temperature range

Operation

-5 ÷ + 50 °C

Storage

-20 ÷ + 70 °C

Ambient Umidity

0 ÷ 95 % RH

Safety

Protection standard

IP54

Conformance

Meets the requirements for CE marking:

EMC directive 89/336/EEC

Rohs Directive 2002/95/EY

Auto zero element

Auto zero element makes the DPT FLOW meter maintenance free. Element automatically adjusts the transmitters zero point from time to time, this eliminates the zero point long term drift of the piezoresistive sensing element.

During zero point adjustment the output and display values will freeze to the latest measured value. The automatic zero point adjustment takes 4 seconds. Zero point adjustment is carried out every 10 minutes normally and during warm up the time is shorter a few times.