The
Diaphragm sealed gauges
are recommended where fluid is highly corrosive, contaminated, and
viscous or may crystallize inside measuring system. The gauge above
the diaphragm seal is packed with appropriate oil that transmits the
pressure acting on the diaphragm to bourdon tube diaphragm, which is
welded to the upper part of sealed unit. This makes it easier to
separate the upper and lower parts, in order to clean the diaphragm
without removing the gauge. Diaphragm can be ANSI 316 of Tantalum,
Hastelloy C and Monel.
Pressure gauge can be of Type 1.3 and 5 and
process connection with Standard threads or flanged connection
confirming to ANSI, BS or DIN Specification. These are available in
dial size 100 mm and 150mm. It has an accuracy of ± 1 % in all
standard ranges.