Product catalog Product catalog - Unicom

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Pressure Switches with ATEX Approval
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Vacuum switch (Ex) for aggressive liquid, gas (Ex-VNS)
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.
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 oC Media temp. limit temperatures up to 80 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 -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
Fixed pressure hysteresis
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)
http://products.ecc.emea.honeywell.com/europe
U430B