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Technical information Fundamentals Effects of Temperature on Gage Performance

The influence of Temperature Gage Performance

Due to the influence of temperature on elasticity tube material, accuracy may vary. Sensors are calibrated 75 F (23.9C) may change more than 2 percent at:
  • Full scale below -30F (-34C)
  • Above 150 F (65.6C)

Care Sensors

Pressure gage is one of the person's clothes most valuable tools. Thus, the quality of work depends on the accuracy of the sensors used. The most high precision-made instruments that will give many years of reliable service, if properly treated. Test-gage set should be used primarily for checking pressure at low and high side compressor. Ammonia gage must be used steel Bourdon tube Council and the socket to prevent damage.

After examining the construction of your thickness gauges, you will deal with them more effectively. Internal mechanism of a typical gage shown in Fig. 1-23. The internal parts of a steam tension thermometer very similar.

Drawn brass, as a rule, used the materials of the case.

It does not corrode. However, some sensors now use plastic. Copper alloy Bourdon tube with brass tipped and the socket is used for the majority of refrigerants. Stainless steel is used for ammonia. Engineers determined that the moving parts involved in the moving will last longer if done unlike metals. That is why many top-class refrigeration thickness gauges are bronze-shrub movements with idler in stainless steel and gazebo.

A socket is only to support the entire gage. It is outside the chassis. Expanding long enough to provide the key blade enough for use in mounting pressure gauge source. Never twist the case when threading the device into the socket. This can lead to a breach or permanent damage to the mechanism.

NOTE: Keep sensors thermometers separately from other assets, the maintenance kit. They can be knocked out of alignment shock of heavy tools.

Most pressure sensors for refrigeration testing a small hole restriction screw. The screw is placed in a pressure inlet opening of the socket. This reduces the ripple effect without removing the pressure reading. If the hole is clogged, screw can be easily removed for cleaning...

 
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