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Annex 1: DNV certificate
Product description
Differential pressure gauge with integrated working pressure indication and micro switches.
Pressures p
and p
act on two media chambers separated by diaphragm, this leads to an axial deflection of the
1
2
diaphragm against the measuring range springs. The deflection is transmitted to the movement and to the leaf springs of
the microswitches.
Technical Data
Size
Accuracy
Working pressure
Temperature range:
Media chamber
Aluminium-or Stainless steel case.
Application/Limitation
The pressure gauge is type approved for monitoring and control of filters, compressors, pumps and other machinery
components like marine boilers, heat transfer systems, pressure vessels, bilge-water collection, sanitary and cooling-
water systems, pressure boosting systems, heating and cooling systems, fire-extinguishing systems.
The selection of the pressure gauge type premises that the pressure medium is not corrosive against wetted parts.
Only products bearing the DNV Mark on the product and/or product packing are certified.
Type Approval documentation
Marking of product
Manufacturer
Manufacturing no.
Periodical assessment
For retention of the Type Approval, a DNV Surveyor shall perform periodical assessment to verify that the conditions for
the Type Approval are complied with. Refer to the Class Programme DNV-CP-0338, Sec.4.
To check the validity of this certificate, please look it up in
Form code: TA 251
116
NS: 100 mm differential pressure gauge; 22 mm working pressure gauge.
Differential pressure indication < 2,5% of span, optional ±1,6%
Working pressure indication < 4% of span
25 bar max.
-10°C ... +70°C (ambient), -10°C ... +90°C (medium)
Revision: 2021-03
WIKA operating instructions DPGS40TA with component testing
Job Id:
Certificate No:
Revision No:
https://approvalfinder.dnv.com
www.dnv.com
262.1-032726-3
TAP000021A
1
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