Removable Components; Pressure Transducer Modules - Fluke Calibration 4322-SYS-NAVAIR Service Manual

4322
Service Manual

Removable Components

Read the subsequent sections to learn more about the removable components in the
Controller.

Pressure Transducer Modules

To measure pressure, the Controller uses four Pressure Transducer Modules (pressure
module). A pressure module (shown in Figure 2-3), is a serviceable and replaceable
pressure measurement component that is installed behind the display which allows for
easy access to calibrate or replace a failed pressure module. Each pressure module has an
assigned slot with a specific pressure range.
To prevent damage to the pressure modules, turn off power
prior to removal and installation.
Each pressure module has three internal sensor elements that make three separate
measurements. The three measurements are constantly monitored and compared against
each other to ensure that all three sensor elements are reading the same pressure. If one of
the sensor elements measure a value that is unlike the other two sensor elements
measurements, the Controller shows "CalChk" on the top of the Main menu. See
"CalCheck" on page 2-15.
Each pressure module is calibrated individually against an external reference. See the
calibration procedure in Chapter 3 for calibration instructions.
2-10
Caution