Astra Automatyka > Produkty > Sensors and transducers > Pressure > Pressure monitor for hot water, steam, gas and fuel DWR HONEYWELL / FEMA
Pressure monitor for hot water, steam, gas and fuel DWR HONEYWELL / FEMA

DWR HONEYWELL / FEMA are especially suitable as a pressure monitor or pressure limiter for fuel gases and liquid fuels (e.g. fuel oil), as well as for steam systems according to TRD 604 and hot water...

DWR HONEYWELL / FEMA are especially suitable as a pressure monitor or pressure limiter for fuel gases and liquid fuels (e.g. fuel oil), as well as for steam systems according to TRD 604 and hot water systems to DIN EN12828, systems in accordance to DIN EN12952-11 and DIN EN12953-9.


Product comparison
Model Setting range Switching differential
(mean values)
Maximum working pressure
1* 2*
Pressure monitors without differential adjustment
DWR06

DWR1

01…0,6 bar

0,2…1,6 bar

0,04 bar

0,06 bar

6 bar

 

6 bar
DWR3

DWR6

02…2,5 bar

0,5…6 bar

0,1 bar

0,2 bar

10 bar 16 bar
DWR625

DWR16

0,5…6 bar

3…16 bar

0,25 bar

0,5 bar

20 bar 25 bar
DWR25

DWR40

4…25 bar

8…40 bar

1 bar

1,3 bar

50 bar 63 bar
EEx-ia versions with ZF 513
Switching differential adjustable
DWR06-203

DWR1-203

0,1…0,6 bar

0,2…1,6 bar

0,08…0,5 bar

0,15…,06 bar

6 bar 6 bar
DWR3-203

DWR6-203

0,2…2,5 bar

0,5…6 bar

0,17…1,2 bar

0,3…1,4 bar

10 bar 16bar
DWR625-203

DWR16-203

0,5…6 bar

3…16 bar

0,4…2,5 bar

0,75…3,15 bar

20 bar 25 bar
DWR25-203

DWR40-203

4…25 bar

8…40 bar

1,3…6 bar

2,3…6,6 bar

50 bar 63 bar

* max. working pressure

The DWR Honeywell / FEMA pressure monitors is used to monitor maximum and minimum pressures.This pressure switch is “of special construction” and has been tested with 2 million operating cycles. TÜV and DVGW tests exists.

Parameter Value
Kind of pressure overpressure, relative
Pressure connection internal thread G1/4, external thread G1/2
Electrical connection Plug DIN EN 175301
Protection class IP54
Temperature medium -25...70°C
Housing material rugged housing of seawater resistant aluminium die casting GD Al Si 12
Sensing element material 1.4104 + 1.4571
Media temperature limit temperatures up to 85 oC are allowable for short periods. Higher temperatures are possible, provided that the limit is safeguarded by suitable measures (e.g. water tube trap, see Accessories for Pressure Switches / Transmitters)
Ambient temperature -25 ... 70C
Ambient temperature limit at temperatures below 0C, ensure that no water condensation can arise in the sensor and in the switching device
Switch function/capacity SPDT Microswitch 250 Vac; capacity 5 A inductive, 8 A resistive
Certificates • TV.DWFS (SDBFS).17-281 according VdTUEV Memorandum Pressure 100, Issue 03.2017 and DIN EN 12952-11 and DIN EN 12953-9:2007
• ID 0000035004 according DIN EN 764-7:2002 and DIN EN 13611:2015-09
• CE-0085CL0343 according to DIN EN 1854, Issue 01.10.2010
• 01 202 931-B-11-0003 according Directive 97/23 EC
• SIL2 according IEC 61508-2
Mechanical lock/reset with special function possible
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