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Pressure Gauge

Common Reasons For Pressure Gauge Failure

by David Zheng 17 Jun 2022 0 Comments

JIVTO, a one-stop-shop, has been specializing in pressure gauges and ball valves for more than 15 years. Termed as the veterans in the industry dealing in pressure measurement devices, JIVTO deals in a wide variety of these fluid intensity devices. The pressure gauges available here are widely used for measuring gas, liquid, water, and hydraulic pressure. Being proficient and having a skilled approach to observing how they work and drawing out the analogy about the method of measuring fluid, gas, water, or steam intensity in a pressure-powered machine, we have come up with a very pertinent yet unanswered question! Designed to measure the pressure of media in a system, we have been brought closer to finding why there occur pressure gauge failures and what could be the common reasons behind them.

Common reasons for pressure gauge failures 

 pressure gauge failures

This blog, straight from the core of the expert's corner here at JIVTO, illustrates the common reasons for failure, justifying why pressure gauges don't often work as expected. Let's sit down and read these out loud! 

1) Mechanical vibrations

The main cause of pressure gauge failures, mechanical vibration disturbs the measurement accuracy through the gauge significantly. First things first, it becomes very difficult to read the pointer moving against the dial with a constant and disturbing gauge vibration. Then, the cumulative damage to the pointer mechanism from vibration can eventually move a pointer off zero, thus becoming the main cause of inaccurate readings. Other prominent risks posed by mechanical vibrations include:

  1. Damage to the measuring equipment (wear and tear of the internal components)
  2. Inaccurate functionality and no precision in readings 
  3. Pressure system failure more often than not

2) Pulsation

Regular rapid and fluctuating pressure changes in the media are termed pulsation. This condition makes it difficult to read a standard Bourdon tube gauge as the pointer flutters wildly. The other prominent risk pulsation may pose might include:

  1. Inaccurate readings
  2. Damage to the equipment(wear and tear of internal components)
  3. An acute pressure system failure

3) Inclement temperature conditions

The sensing diaphragm can be subject to induced measurable changes. Extremely high and low-temperature conditions cause the metal to expand and contract, which is the persisting reason behind the pressure gauge failure. There is an induced change in the modulus of elasticity of the bourdon which in turn causes a change in the ambient temperature affecting the accuracy of the measurement through the gauge.

4) Overpressure

The condition is very similar to the pressure spike that occurs most often when the gauge measures pressure near its maximum value. Overpressure can cause the Bourdon tube to deform and split. Since it is the maximum pressure the transducer can withstand without faulting the performance, exceeding overpressure values may make the device subject to damage with pressure crossing maximum permissible limits.

It is essential to diagnose the reasons for pressure gauge failure 

Pressure gauge safety

Pressure gauges are an integral part of an application's warning system. Pressure gauges are the most crucial components of the processing systems and hence need not just to be accurate but reliable and easy to read and calibrate. Mechanical vibration, extreme temperatures, corrosion, pressure spikes, overpressure, etc., could be the conditions behind the gauge failure. Therefore, it is extremely important to understand how a gauge is constructed and tested, wherein lie the most significant performance measurement criterion including reliability, safety, and peace of mind.

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