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FEMA negative pressure switches detect the pressure difference relative to atmospheric pressure. All data relating to the switching pressure ranges and thus also the scale divisions on the switching devices are to be understood as the difference in pressure between the releant atmospheric pressure and the set switching pressure. The "zero" reference point on the scale of the unit corresponds to the relevant atmospheric pressure. Degree of Ex-protection: Ex II 2G Ex d e IIC T6 Gb, Ex II 1/2D Ex ta/tb IIIC T80 oC Da/Db
Flame proof enclosure Switch components and other electrical functional units capable of igniting explosive gas mixtures are encapsulated in a housing which will survive the explosive pressure of an internal explosion and the special design of which prevents the transference of this explosion to the ambient atmosphere.
Kind of pressure overpressure, relative
Pressure connection internal thread G1/4, external thread G1/2
Electrical connection terminal connection M16x1,5
Protection class IP65
Housing material rugged housing of seawater resistant aluminium die casting GD Al Si 12
Sensing element material 1.4104 + 1.4571
Media temp. -20 ... 60 oC
Media temp. limit 60oC. 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 -20 ... 60 oC
Ambient temp. limit at temperatures below 0 oC, ensure that no water condensation can arise in the sensor and in the switching device
Switch function/capacity SPDT Microswitch 250 Vac; capacity 2 A inductive, 3 A resistive
Certificates
TV.DWFS (SDBFS).12-281 according VdTUEV Memorandum Pressure 100, Issue 7.2006 and DIN EN 12952-11 and DIN EN 12953-9:2007
ID 0000035004 according DIN EN 764-7:2002 and DIN EN 13611:2008
CE-0085CL0343 according to DIN EN 1854, Issue 07.2006
01 202 931-B-11-0003 according Directive 97/23 EC
IBExU12ATEX1040 according ATEX 2014/34/EU
IECEx IBE 14.0077
SIL2 according IEC 61508-02
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Fixed pressure hysteresis
Pressure adjustment rangeSwitching differentialMax. pressureTypeDownloads
barbarbar TXTPDF
0.1 ... 0.60.046EX-DWR06 TXT
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Specification sheet (English) Specification sheet (German) Installation/mounting instruction (English) Installation/mounting instruction (German) Installation/mounting instruction (French) Installation/mounting instruction (Italian) Installation/mounting instruction (Polish) Installation/mounting instruction (Russian) Installation/mounting instruction (Spanish) Installation/mounting instruction (Danish) Installation/mounting instruction (Hungarian) Installation/mounting instruction (Czech) Installation/mounting instruction (Swedish) Installation/mounting instruction (Finnish) Installation/mounting instruction (Dutch) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (English) Certificate (English) Certificate (Dutch) Certificate (German) Certificate (English) Certificate (Russian)
0.2 ... 1.60.066EX-DWR1 TXT
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Specification sheet (English) Specification sheet (German) Installation/mounting instruction (English) Installation/mounting instruction (German) Installation/mounting instruction (French) Installation/mounting instruction (Italian) Installation/mounting instruction (Polish) Installation/mounting instruction (Russian) Installation/mounting instruction (Spanish) Installation/mounting instruction (Danish) Installation/mounting instruction (Hungarian) Installation/mounting instruction (Czech) Installation/mounting instruction (Swedish) Installation/mounting instruction (Finnish) Installation/mounting instruction (Dutch) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (English) Certificate (English) Certificate (Dutch) Certificate (English) Certificate (German) Certificate (Russian)
0.2 ... 2.50.116EX-DWR3 TXT
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Specification sheet (English) Specification sheet (German) Installation/mounting instruction (English) Installation/mounting instruction (German) Installation/mounting instruction (French) Installation/mounting instruction (Italian) Installation/mounting instruction (Polish) Installation/mounting instruction (Russian) Installation/mounting instruction (Spanish) Installation/mounting instruction (Danish) Installation/mounting instruction (Hungarian) Installation/mounting instruction (Czech) Installation/mounting instruction (Swedish) Installation/mounting instruction (Finnish) Installation/mounting instruction (Dutch) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (English) Certificate (English) Certificate (Dutch) Certificate (English) Certificate (German) Certificate (Russian)
0.5 ... 60.216EX-DWR6 TXT
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Specification sheet (English) Specification sheet (German) Installation/mounting instruction (English) Installation/mounting instruction (German) Installation/mounting instruction (French) Installation/mounting instruction (Italian) Installation/mounting instruction (Polish) Installation/mounting instruction (Russian) Installation/mounting instruction (Spanish) Installation/mounting instruction (Danish) Installation/mounting instruction (Hungarian) Installation/mounting instruction (Czech) Installation/mounting instruction (Swedish) Installation/mounting instruction (Finnish) Installation/mounting instruction (Dutch) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (English) Certificate (English) Certificate (Dutch) Certificate (English) Certificate (German) Certificate (Russian)
0.5 ... 60.2525EX-DWR625 TXT
PDF
Specification sheet (English) Specification sheet (German) Installation/mounting instruction (English) Installation/mounting instruction (German) Installation/mounting instruction (French) Installation/mounting instruction (Italian) Installation/mounting instruction (Polish) Installation/mounting instruction (Russian) Installation/mounting instruction (Spanish) Installation/mounting instruction (Danish) Installation/mounting instruction (Hungarian) Installation/mounting instruction (Czech) Installation/mounting instruction (Swedish) Installation/mounting instruction (Finnish) Installation/mounting instruction (Dutch) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (English) Certificate (English) Certificate (Dutch) Certificate (English) Certificate (German) Certificate (Russian)
3 ... 160.525EX-DWR16 TXT
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Specification sheet (English) Specification sheet (German) Installation/mounting instruction (English) Installation/mounting instruction (German) Installation/mounting instruction (French) Installation/mounting instruction (Italian) Installation/mounting instruction (Polish) Installation/mounting instruction (Russian) Installation/mounting instruction (Spanish) Installation/mounting instruction (Danish) Installation/mounting instruction (Hungarian) Installation/mounting instruction (Czech) Installation/mounting instruction (Swedish) Installation/mounting instruction (Finnish) Installation/mounting instruction (Dutch) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (English) Certificate (English) Certificate (Dutch) Certificate (English) Certificate (German) Certificate (Russian)
4 ... 25163EX-DWR25 TXT
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Specification sheet (English) Specification sheet (German) Installation/mounting instruction (English) Installation/mounting instruction (German) Installation/mounting instruction (French) Installation/mounting instruction (Italian) Installation/mounting instruction (Polish) Installation/mounting instruction (Russian) Installation/mounting instruction (Spanish) Installation/mounting instruction (Danish) Installation/mounting instruction (Hungarian) Installation/mounting instruction (Czech) Installation/mounting instruction (Swedish) Installation/mounting instruction (Finnish) Installation/mounting instruction (Dutch) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (English) Certificate (English) Certificate (Dutch) Certificate (English) Certificate (German) Certificate (Russian)
8 ... 401.363EX-DWR40 TXT
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Specification sheet (English) Specification sheet (German) Installation/mounting instruction (English) Installation/mounting instruction (German) Installation/mounting instruction (French) Installation/mounting instruction (Italian) Installation/mounting instruction (Polish) Installation/mounting instruction (Russian) Installation/mounting instruction (Spanish) Installation/mounting instruction (Danish) Installation/mounting instruction (Hungarian) Installation/mounting instruction (Czech) Installation/mounting instruction (Swedish) Installation/mounting instruction (Finnish) Installation/mounting instruction (Dutch) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (German) Certificate (English) Certificate (English) Certificate (Dutch) Certificate (English) Certificate (German) Certificate (Russian)
DescriptionAdditional Product TypeDownloads
 TXTPDF
Syphon for high temperature, steel, U-shape (for more accessories, see Accessories for Pressure Switches / Transmitters)U430B TXT