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Mechanical pressure switches

Service functions

Service functions

Devices with service functions will be produced according to the customer’s specifications.

The system requires that these product combinations are identified in such a way as to prevent any possibility

of confusion. These combinations are characterised by a product code with the suffix "-S" on the packaging

label as well as separate labels with barcodes for each service function.

Service functions are available for the following type series (including Ex versions):

Pressure switches: DCM, DNM, DNS, VNS, VCM, VNM, DDCM, DWR, DWAM, DWAMV, SDBAM, DGM, FD

Ordering devices with service functions

Example:

Ordering 1 DCM6, set at 4 bar rising, identified with code PSH008 as requested by the customer and acceptance test certificate 3.1.

The order confirmation contains:

1 DCM6-S ("S" is need for factory = following lines belong to this item)

1 ZF1970: set to 4 bar rising

1 ZF1978: PSH008

1 AZ3.1B1

Included items: Labels with barcodes on the packaging:

Pack contents: 1 DCM6 (without "S" suffix) marked

DCM6-S

1 ZF1970: set to 4 bar rising

ZF1970: set to 4 bar rising

1 ZF1978: PSH008

ZF1978: PSH008

1 AZ3.1 will be sent by extra post

AZ3.1B1

1 Installation and operating instructions

Service functions

Plug connection Terminal connection Ex-i/

200 series

300 series

Ex-d

Adjustment according to customer’s instruction:

one switching point

ZF1970*

ZF1970*

ZF1970*

two switching points or defined switching differential

ZF1972*

ZF1972*

–

Adjustment and lead sealing according to customer’s instruction:

one switching point

ZF1971*

–

–

two switching points or defined switching differential

ZF1973*

–

–

Labelling of units according to customer‘s

ZF1978

ZF1978

ZF1978

instruction with sticker

Special packing for oil and grease-free storage

ZF1979

ZF1979

ZF1979

Test reports according to EN 10 204

Certificate 2.2 based on non-specific specimen test

WZ2.2

WZ2.2

WZ2.2

Inspection test certificate 3.1 based on specific test

AZ3.1B1

AZ3.1B1

AZ3.1B1

Inspection test certificate for FV separating diaphragms

AZ3.1-V

AZ3.1-V

AZ3.1-V

* Switching point adjustment: Please specify switching point and direction of action (rising or falling pressure).