Pressure gauges are essential in many industries, providing critical information about fluid systems. However, like any tool, liquid-filled pressure gauges can cease to perform accurately. Here are five reasons liquid-filled pressure gauges can fail.
Corroded Parts
Corrosion is one of the primary culprits behind the failure of liquid-filled pressure gauges. Corrosive substances in the environment can degrade the material of the gauge over time, affecting its performance and accuracy. Regular inspections and maintenance, as well as choosing materials resistant to corrosion, can mitigate this issue. Our liquid-filled pressure gauges help to lubricate the internal workings of the gauge and prevent internal corrosion.
Excess Vibration
Although oil-filled gauges resist vibration, excessive tremors could cause them to fail. The constant movement can disrupt the internal components of the gauge, leading to inaccurate readings or even complete failure. To combat this, use gauges rated to withstand high-vibration environments.
Temperature Extremes
Temperature fluctuations can impact the performance of liquid-filled pressure gauges. High temperatures can cause the liquid inside the gauge to expand, leading to inaccurate readings. On the other hand, very low temperatures can cause the liquid to contract or freeze, also resulting in inaccurate readings. Selecting a gauge with a suitable temperature range for your application can prevent this issue. You can also use a device like a pigtail tube to separate the media temperature from the gauge.
Pressure Beyond a Guage’s Tolerance
Overpressure occurs when the pressure exceeds the maximum limit of the gauge and can cause significant damage. It can result in a complete failure of the gauge. Use a gauge that is rated for the maximum pressure of your system to prevent overpressure situations. The general rule of thumb for gauges is to multiply your working PSI by three and use that range. For example, if your working PSI is 100, then you would need a pressure gauge that has a max PSI of 300.
Pressure Pulsation & Sudden Surge (Hammer Effect)
Pulsation, or rapid pressure changes, can also lead to gauge failure. These rapid changes can cause wear and tear on the gauge's internal components and, eventually, premature failure. Using a gauge with a pulsation-dampening accessory, like a gauge snipper, can reduce this risk.
Pressure gauges can fail for several reasons. Understanding the reasons liquid-filled gauges fail can help you avoid inaccurate readings and dangerous accidents. Select the right gauge for your application to ensure its long-term performance.