10
3. CONNECTION TO PRESSURE SOURCES
The C9500 Series instruments are tted with
1
/
8
" BSP female connectors. The following checks
must be made before connecting the instrument to
a pressure source:-
Check the security of all ttings.
Check that the pressure source does not exceed the
ratings for the instrument as set out in Table 1.
Check that the gases to be measured will not damage
or corrode stainless steel, brass, glass, ceramic, silicon,
nickel, aluminium, gold or epoxy resin.
Note: Comark C9500 Series Pressure Measurement
Instruments are not suitable for absolute pressure
measurement.
Note: Pressures in excess of maximum over range
gure with respect to atmospheric pressure, should
not be applied to either port as this could damage the
instrument or represent a safety hazard.
TABLE 1
Instrument Pressure Range Maximum Over/
Under Pressure
C9551 0 to ±2 PSI/140mbar 6 PSI/400mbar
C9553 0 to ±5 PSI/350mbar 15 PSI/1000mbar
C9555 0 to ±30 PSI/2000mbar 90 PSI/6200mbar
C9557 0 to ±100 PSI/6900mbar 200 PSI/13700mbar
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