Pressure Detectors
PRESSURE DETECTOR FUNCTIONAL USES
Ambient temperature variations will affect the accuracy and reliability of pressure detection
instrumentation.
Variations in ambient temperature can directly affect the resistance of
components in the instrumentation circuitry, and, therefore, affect the calibration of
electric/electronic equipment. The effects of temperature variations are reduced by the design
of the circuitry and by maintaining the pressure detection instrumentation in the proper
environment.
The presence of humidity will also affect most electrical equipment, especially electronic
equipment. High humidity causes moisture to collect on the equipment. This moisture can cause
short circuits, grounds, and corrosion, which, in turn, may damage components. The effects due
to humidity are controlled by maintaining the equipment in the proper environment.
Summary
The three functions of pressure monitoring instrumentation and alternate methods of monitoring
pressure are summarized below.
Functional Uses Summary
Pressure detectors perform the following basic functions:
-
Indication
-
Alarm
-
Control
If a pressure detector becomes inoperative:
-
A spare detector element may be used (if installed).
-
A local mechanical pressure gauge can be used (if available).
-
A precision pressure gauge may be installed in the system.
Environmental concerns:
-
Atmospheric pressure
-
Ambient temperature
-
Humidity
Rev. 0
Page 5
IC-02
