Martel Electronics BetaGauge 3II - Manual (Page 41)

Basic Operations 3-6
Procedure
To select a water column pressure unit, do the
following:
1. Follow the procedure for selecting pre-programmed
pressure units, selecting InWC or cmWC, as
appropriate. The display screen appears similar to
the one shown below:
2. Press the corresponding function key to select the
appropriate temperature for the water density
correction value you want to use. The display
returns to the list of available units.
3. Press the CLR key to return to the Setup menu.
Zeroing Modules
BetaGauge II pressure and DC modules may sometimes
indicate an offset that requires a zeroing operation.
These offsets typically occur under the following
circumstances:
 Each time you turn the calibrator off and on.
 Each time you install a new module.
 Each time you select a new engineering unit
(pressure module only).
CH2 InWC
4C 20C 60F