Safety
Bourdon tube, capsule, diaphragm,
spring diaphragm pressure gauges
7
2.3
Safe handling
WARNING
Injury due to escaping fluids or bursting parts as a result of
leaks or bursting of pressurised parts
Use Bourdon tube safety pressure gauges with blow-out (for
example, blow-out back).
As per EN 837, liquid-filled pressure gauges must have a blow-out
device (version S1, S2 or S3).
Pressure gauges for oxygen and acetylene must be safety pressure
gauges (version S2 or S3 as per EN 837-1 or pressure gauge as per
ISO 5171). All wetted parts must comply with EN 29539 must be free
from oil and grease. Only lubricants suitable for oxygen at maximum
operating pressure may be used. The pressure gauges must never
be exposed to humidity.
Pressure gauges with glycerine filling must not be used for oxygen or
other oxidising process fluids. High-concentration fluorine liquids and
chlorinated liquids (for example, halocarbon) are suitable for such
applications.
You must observe all pertinent directives and guidelines in the case
of refrigerating systems, compressors, etc. as well as hazardous
substances such as
•
Oxygen
•
Acetylene
•
Flammable substances
•
Explosive substances
•
Toxic substances
After an external fire, measured fluid can escape, in particular at
soft solder connections. Verify and, if necessary, replace all
products before re-commissioning the system.
2.4
Staff qualification
The product may only be mounted, commissioned, operated, main-
tained, decommissioned and disposed of by qualified, specially
trained staff.
Electrical work may only be performed by trained electricians and in
compliance with all applicable local and national directives.
2.5
Modifications to the product
Changes or modifications made to the product by unauthorised per-
sons may lead to malfunctions and are prohibited for safety reasons.
