Pressure Gauges

A Pressure Gauge is used to identify the media pressure within a pipe or vessel. These can come in many configurations and sizes most commonly 40mm, 63mm, 100mm and 150mm dial size. Bottom entry, rear entry etc. The display range of the gauge will also vary if it is an analogue gauge so consideration of the range will need to be accounted for before selecting the correct gauge. For an analogue gauge it is ideal if you choose your pressure gauge to run at about three quarter scale.

The most common type of pressure gauge uses a Bourdon tube. Bourdon tubes are specifically shaped tubes with an oval appearance. The pressure of the medium being measured acts on the inside of the tube and produces a movement as one end is fixed in place. The unfixed end of the tube moves causing the indicating needle to rotate and pressure is indicated on a dial via the movement.

This really depends upon the environment and the quality of the media that the pressure gauge operates in. Correct selection is important as pressure gauges are designed to operate within specific ranges. They play a very important role in maintaining a safe work environment, and maximum production rates. Depending on the requirement, a correctly selected pressure gauge should perform for many years. However we must remember that pressure gauges are instruments and to ensure they perform to the best of their ability and give the correct information results you need, calibration may be required from time to time to extend a lifetime.

As the name suggests a pressure gauge provides the pressure measurement within any pressure containing, pipe, vessel, process etc. To read the pressure a pressure gauge needs to have access to the pressure side. This is usually via an engineered correctly sized port, commonly threaded or welded in place. The gauge is then securely attached to this connection, allowing the media to be measured to enter the pressure gauge for reading and display. Pressure gauges can be directly mounted or remotely connected via tubing. Steam systems usually require the fitting of a water seal loop commonly known as a Pigtail. The pigtail fills with condensate and provides a barrier to excessive heat entering the pressure gauge. Other items that may be required for correct operation of a pressure gauge, designed to protect gauges from pressure spikes caused from fluid hammer by decreasing the orifice size in the line is what is commonly known as a snubber. Also gauge diaphragm seals are used for media isolation, meaning it enables the gauge media to be isolated from the line media but still give an accurate pressure reading. It does this by having a diaphragm in between the line media and the gauge media which flexes with pressure fluctuation to enable it to be transmitted to the gauge.

Most commonly used on fluids and gasses such as compressed air Steam etc. Anywhere that a visual indication of what pressure is at play inside any pressure containment environment which may be required to ensure the safe operation of piping distribution installations and other process equipment etc. Also widely used to maintain maximum temperature limitations for steam using equipment.

This depends upon where you are based and the freight method chosen. If the express freight option is selected it is usually next day delivery to metropolitan areas in Australia for under 5kg. If free freight has been selected it will go by road freight which can be anywhere from 1 to 10 days depending upon your location. It usually averages 3 days.

All of our products come standard with a 12 month warranty. The good news is we have very strict quality controls and all pressure gauges that leave our warehouse are tested and inspected so there are rarely any issues.