User guide

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Pressure Switches with ATEX Approval
http://products.ecc.emea.honeywell.com/europe
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For monitoring and controlling pressures in Ex-applications in devices of the chemical industry and in
the process engineering as well as wherever the pressure of aggressive liquids and gases has to be
monitored. Degree of Ex-protection: Ex II 2 G D EEx de IIC T6 IP65 T80
o
C.
Fixed pressure hysteresis
Vacuum switch (Ex) for aggressive liquid, gas (Ex-VNS)
Kind of pressure vacuum, 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.
Media temp. -15 ... 60
o
C
Media temp. limit temperatures up to 80
o
C 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 -15 ... 60
o
C
Ambient temp. limit at temperatures below 0
o
C, 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 ATEX-approval No. PTB 02 ATEX 1121
Sensing element material 1.4571
Pressure adjustment range Switching differential Max. pressure Type
mbar mbar bar
-250 ... 100 45 3 EX-VNS301
-1000 ... 100 50 6 EX-VNS111
Syphon for high temperature, steel, U-shape (for more accessories, see Accessories
for Pressure Switches / Transmitters)
U430B