Pressure gauges are an integral part of numerous industries, but unfortunately, they do not get as much attention as required.  Just implementing them will not do the trick, importance must be placed on pressure gauge calibration as well.  If you do not calibrate pressure gauges, they may produce inaccurate readings.

3 Factors that Affect Pressure Gauges
Any kind of damage to a pressure gauge, regardless of how little the damage, it will give you an inaccurate reading, which can lead to compromised processes.  You can minimize the occurrence by regularly inspecting and calibrating the pressure gauges.

  • Vibration
    1. Vibration is one of the main factors that greatly affect the pressure gauge readings. In fact, vibrations caused by motors, heavy machinery, pumps and other rotating equipment may result in excess wear and tear on pressure gauges, resulting in inaccurate readings.
    2. Bad vibrations are responsible for damaging the pointer mechanism by moving the pointer off of zero, which leads to inaccurate readings. Even if it is working properly and giving accurate readings, it may be a challenge to read it correctly if there is significant vibration.
    3. Exposure to continuous vibrations will eventually lead to pressure gauge failure. Moving the pressure gauges slightly away from the vibrating machinery can be helpful.
    4. If you work in an environment where there is a significant amount of vibration, then using a liquid-filled or oil-filled pressure gauge would be ideal. The liquid, which is generally silicone oil or glycerin, helps the internals avoid the effects of vibration as it dampens the vibration. 
  • Temperature
    1. Even though pressure gauges are designed to be used at various temperatures, you may get erroneous readings if they are exposed to extreme temperatures. If the conditions are too hot or too cold, then it can produce loss of containment and causes the components to erode or break down. If the gauge is too hot to touch with the hand, it is an indication that it should not be kept in that environment or that you should employ a remote mounting with a capillary line.
    2. Another solution uses a pigtail or coil siphon. The siphon protects the pressure gauges by allowing condensate to form inside the pigtail of the siphon which keeps the hot media from harming the gauge. Place importance on quality assurance at all stages.
    3. Ensure that the gauge you choose is made for the temperature level that it will be operating in. Remember that if the gauges are used around water there is a potential that they could burst if exposed to frost or become foggy due to condensation. 
  • Pulsation
    1. Pulsation, an event when overpressure spikes occur on a regular basis, is also responsible for harming pressure gauges.
    2. An effective way to tackle pulsation is to use pressure snubbers. They contain rapid pressure fluctuation and spikes by slowing the maximum speed that a substance can travel.
    3. They also help in making the gauges that measure quick oscillating media more readable and minimize damage.
    4. If you think the likelihood of pulsation is high, use the liquid filled gauge as the liquid helps in dampening the spikes and reducing the effects of pulsation.


As a leader in Scientific Equipment Repair and Medical Equipment Calibrations, Scientific Instrument Center works with many corporations, universities, and hospitals providing the highest level of laboratory services. Whether we are providing biosafety cabinet calibration or medical equipment calibration, we keep your equipment performing to industry codes and regulations. Feel free to contact us at (614) 771-4700