Ecom Instruments MCAL 4200 Instruction Manual page 60

Refer to the pressure module documentation for material compatibility.
To measure pressure, follow these steps:
1. Connect the pressure module to the calibrator as shown in Figure 9. using the 700mA
pressure module adapter.
The calibrator can measure pressure on both the upper and the lower display. This makes it
possible to measure pressure in two different units at the same time.
2. Switch to either upper or lower display from the Main Menu.
3. Select [PRESSURE] from the primary parameters.
4. Select the desired measuring unit.
5. Zero the pressure module. The zero function on the calibrator can be found in the pressure
zeroing menu.
Figure 9. Connections for Measuring Pressure
3.4-1 Zeroing with Absolute Pressure Modules
To zero, adjust the calibrator to read a known pressure, such as barometric pressure.
To adjust the calibrator, follow these steps:
1. Enter the pressure zeroing menu.
2. Select [ZERO ]. [SET REFERENCE ABOVE] will appear. Enter the pressure using the keypad.
3. The calibrator stores the Barometric zero offset in non-volatile memory.
The zero offset is stored for one absolute pressure module at a time. If a new absolute
module is connected this process must be repeated.
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