WIKA CPG2500 - Manual (Page 20)

20 Mensor/WIKA Operating Instructions Series CPG 2500
Digital Pressure Gauge
SERIES CPG 2500
5.4 Rear Panel
Up to five pneumatic pressure ports are located on the rear panel. Positioned between
the pressure ports are the ethernet and RS-232 connectors and the power switch. Op-
tional connectors could be a GPIB connector, a barometric reference hose barb, or an
analog output connector.
5.5 Pressure Connections
i
Notice
When making up a connection to an o-ring adapter fitting port use a
back-up wrench to prevent over-stressing the threads in the mani-
fold block.
All of the primary pressure ports on the rear are female 7/16 - 20 SAE/MS straight
threads per MS16142 and SAE J514 table 14. They require a tube fitting boss seal with
an o-ring per MS33656. Mensor provides female 1/8” NPT adapter fittings with the
instrument. The pressure connections can be made to these adapters with the proper
mating hardware. We recommend the use of either Loctite® Hydraulic Sealant or new
teflon tape on the threads of any male pipe fitting. Do not use sealant on fittings sealed
with an o-ring. The integrity of each seal is particularly important since even microscop-
ic leaks can cause errors in pressure measurements.