Martel Electronics BetaGauge 3II - Manual (Page 32)

2-5 Modules
BetaPort–P Pressure Modules
The BetaPort– P pressure modules are fitted with 316
S.S. 1/8" FNPT connections. A variety of connectors
and adapters are available from third parties to allow
connection to any type of field device.
It is recommended that you use an appropriate pipe
thread seal (such as Teflon tape) with any connector.
This improves thread sealing and reduces the likelihood
of galling the threads.
Procedure
When installing a connector on a module, always use a
backup wrench to prevent damage to the module or
calibrator. See the illustration below:
Figure 2-1 Using a Backup Wrench