Features of pressure gauges
When you are choosing a pressure gauge, the first thing to consider is your application. Understanding the application, and what the gauge will come into contact with, will give you a better idea of the type of material to choose for the gauge. Brass is a good option for general applications, while stainless steel tends to be a good choice for applications that involve any corrosive materials. Consider the gauge size, as well as the connection options and fittings of the gauge.
Check to see what the overall range of the gauge is as well. Ideally, you want to choose a gauge that is able to measure twice the normal operating pressure. The max operating pressure should not be greater than 75% of what the gauge can measure. In addition to the pressure range, you should consider the temperature range. The normal range for dry gauges is from -40 degrees F to 150 degrees F. For filled gauges, it is -13 degrees F to 150 degrees F.
How pressure gauges work
The pressure gauge will let fluid or gas from the piece of equipment enter the gauge. The calibrated rod inside of the gauge will then move to signify the amount of pressure within the device. They work very simply and are used in many different applications today.
There are different designs available – traditional and filled gauges. The filled gauges are not as sensitive to vibration and condensation, both of which can reduce the lifespan of a traditional gauge. The housing of the filled gauge contains viscous oil, and it has fewer moving parts. These features help it to last longer than the traditional gauges.
Pressure Gauge Manufacturers
Some of the manufacturers making these types of gauges include Winters, Omega, Ashcroft, and Pressure Chemical Co.