Selection criteria
14
Bourdon tube, capsule, diaphragm, spring diaphragm pressure gauges
4.6
Connection
Select the size and the type of the connection thread according
to EN 837-1/-3, chapter 7.3 and observe the selection table as
per EN 837-1, chapter 8 (combinations: pressure, thread, nomi-
nal size).
Other connections for special industries and applications must be
agreed upon.
4.7
Nominal sizes
The nominal size according to EN 837-1/-3 relates to the housing di-
ameter in mm. The following nominal sizes are standardised: 40, 50,
63, 80, 100, 160 and 250.
4.8
Cleanliness
Certain applications require pressure gauges which must have been
cleaned in a special way prior to shipment, for example, free from oil
and grease, free from silicone.
1.
State cleanliness requirements when ordering.
2.
Verify that pressure gauge remains clean during installation.
