Martel Electronics MasterCAL - Manual (Page 63)

Calibrator
Using Source Mode
53
1. Connect a pressure module and pressure source
to the calibrator as Figure 18 shows. The
threads on the pressure modules accept ¼ NPT
fittings. Use the supplied ¼ NPT to ¼ ISO
adapter if necessary.
2. If necessary, press M for SOURCE mode.
3. Press p . The calibrator automatically senses
which pressure module is attached and sets its
range accordingly.
4. Zero the pressure module as described in the
module’s Instruction Sheet. Modules vary in
zeroing procedures depending on module type.
You MUST perform this step before you execute
a task that sources or measures pressure.
5. Pressurize the pressure line with the pressure
source to the desired level as shown on the
display.
6. If desired, you can change pressure display units
to psi, mHg, inHg, mH
2
O, inH
2
O, inH
2
O@60
°
F,
ftH
2
O, bar, g/cm 2 , or Pa. Metric units (kPa,
mmHg, etc.) are shown in Setup mode in their
base units (Pa, mHg, etc.). Change the pressure
display units as follows:
a. Press s .
b. Press Next Page twice.
c. Press e with the cursor on Pressure
Units .
d. Select the pressure units with the u or d
keys.
e. Press e .
f. Press the Done softkey.