Functional Uses Summary

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