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Pressure Switches & Sensors

Ex-VCM / Ex-VNM Negative Pressure Switches

FEMA negative pressure switches detect the pressure difference relative to atmospheric pressure. The "zero" reference point on the scale of the unit corresponds to the relevant atmospheric pressure.

Overview

Ex-VCM / Ex-VNM 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.It comes with robust housing made of seawaterresistant die cast aluminium GD Al Si 12.

Features & Benefits:
  • The Ex-VCM and Ex-VNM series are calibrated for falling pressure.
  • This means that the adjustable switching pressure on the scale corresponds to the switching point at falling pressure.
  • The reset point is higher by the amount of the switching differential.
Certifications:
  • SIL2 according IEC 61508-2
  • IBExU12ATEX1040 according to ATEX 2014/34/EU
  • IECEx IBE 14.0077
Sort
Others
Document Title
Document Type
File Size
Declaration of Conformity
0.26 MB
Certificate of Conformance
0.64 MB
Certificate of Approval
0.67 MB
Document Title
Document Type
File Size
Declaration of Conformity
0.26 MB
Certificate of Conformance
0.64 MB
Certificate of Approval
0.67 MB
Product Number
Image
SKU
Description
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EX-VCM301
Vacuum Pressure Switch to ATEX 201434EU, SPCO; differential not adjustable; setting range: –250 …+100 mbar; switching differential: 2 ... 25 mbar; max pressure: 1.5 bar
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EX-VCM4156
Vacuum Pressure Switch to ATEX 201434EU, SPCO; differential not adjustable; setting range: –15 …+6 mbar; switching differential: 0,2 …3,5 mbar; max pressure: 1 bar
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EX-VNM111
Vacuum Pressure Switch to ATEX 201434EU, SPCO; differential not adjustable; setting range: –1 …+0,1 bar; switching differential: 10 ... 40 mbar; max pressure: 6 bar
alt
EX-VNM301
Vacuum Pressure Switch to ATEX 201434EU, SPCO; differential not adjustable; setting range: –250…+100 mbar; switching differential: 2 ... 25 mbar; max pressure: 1,5 bar
Image
SKU
Description
alt
EX-VCM301
Vacuum Pressure Switch to ATEX 201434EU, SPCO; differential not adjustable; setting range: –250 …+100 mbar; switching differential: 2 ... 25 mbar; max pressure: 1.5 bar
alt
EX-VCM4156
Vacuum Pressure Switch to ATEX 201434EU, SPCO; differential not adjustable; setting range: –15 …+6 mbar; switching differential: 0,2 …3,5 mbar; max pressure: 1 bar
alt
EX-VNM111
Vacuum Pressure Switch to ATEX 201434EU, SPCO; differential not adjustable; setting range: –1 …+0,1 bar; switching differential: 10 ... 40 mbar; max pressure: 6 bar
alt
EX-VNM301
Vacuum Pressure Switch to ATEX 201434EU, SPCO; differential not adjustable; setting range: –250…+100 mbar; switching differential: 2 ... 25 mbar; max pressure: 1,5 bar