When designing a hydraulic system, it is important to consider the type(s) of monitoring components you require. While a variety of factors can be monitored including oil flow, oil pressure, oil level, oil temperature and oil cleanliness, the most common factor to consider is oil pressure. The most simple and cost-effective way to monitor oil pressure is to use a round face gauge.
Within normal hydraulic system operation, gauges can observe large fluctuations and pressure spikes. For example, every time a cylinder bottoms out, your system is shocked. Over time, this constant hammering results in a loss of gauge accuracy and eventually leads to failure. Because of the potential for inaccuracy and failures associated with these system shocks, we recommend that you either use a gauge snubber or isolate the gauge altogether when it is not being viewed for monitoring.
A gauge snubber has a small orifice that reduces the rate at which oil reaches your pressure gauge. This device dampens the spikes, resulting in less wear and tear on your gauge.
By isolating the gauge from the system when it’s not being observed, you will increase the life of your gauge immensely, as it is not continually subjected to system spikes. It will only be experiencing spikes when you are actually reading the gauge during short periods of time. To isolate the gauge from the system, install a push-to-read valve, which connects system pressure to the gauge only while the button is held. You can also employ the use of a needle valve, which is fully closed when the gauge is not read, thereby isolating the gauge from the system pressure.
Regardless of which method you choose, reducing the number of spikes that your pressure gauges endure will prolong their life and result in fewer headaches down the road.
To learn more, contact your local Kaman Fluid Power to speak with a product specialist today.
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