Martel Electronics BetaGauge 3II - Manual (Page 30)

2-3 Modules
Removal Procedure
To remove a module from the BetaGauge II calibrator,
place one hand on the calibrator and use the other hand
to firmly grasp the module and pull directly out from
the calibrator.
NOTE: If a BetaPort–P pressure module is removed or
disconnected while the BetaGauge II is reading
pressure units, the display will show an invalid
pressure reading. After a few seconds, the
calibrator will determine that the pressure
module has been disconnected or has
malfunctioned and the following message will
appear: NO MOD.
Input Module Connections
The following paragraphs describe how to connect the
BetaGauge II to field instruments for measuring
pressure and electrical signals.
BetaPort–DC Electrical Modules
To make electrical connections to the BetaPort–DC
module, use standard banana jacks on ¾ inch (19 mm)
centers.
The factory test lead connector is a dual banana
connector with the common pin marked by a tab.
Replacements are readily available from a variety of
sources including Martel Electronics Corporation.
(Consult Factory Sales for details.)
CAUTION: When connecting any electrical
measuring device to an unknown circuit,
it is best to de–energize the circuit before
connecting the device. You can then
energize the circuit from a safe location.