A digital pressure gauge is an instrument used to measure the pressure of liquids and gases and then digitally display it. The transducer installed in the gauge converts the obtained pressure value into a digital reading.
Pressure gauges find extensive application in industrial and automaton industries. Their application is gaining traction in new areas of healthcare and energy production.
The display may be backlit and include various pressure related data collection and display functions, including data logging, min/max display, peak alarms, unit’s selection, tare function and more.
Pressure gauge manufactures are incorporating new and advanced technologies to gain a market edge. With the market brimming with a variety of pressure gauges, selecting any one gauge is very difficult.
When the gauge is to be used in a hazardous environment, intrinsically safe certifications are available.
We are laying out a list of steps that can help you in selecting the best digital pressure gauge:
1. Check the Accuracy of Pressure Gauges
One major difference between mechanical and digital pressure gauges is accuracy. The accuracy provided by the latter is considered to be higher. Accuracy class from 0.5% to 0.05% of full scale.
Generally, the price of the gauge increases with accuracy. You must precisely evaluate the requirements of your applications before finalizing any particular instrument.
2. Decide Upon the Durability
Digital gauges are known to be very durable as they lack moving parts. They come in different types suitable for different applications.
For instance, some gauges are required to be moved around for use in applications such as testing and demand more robustness whereas some applications require stationary gauges.
Decide the kind of durability you need. This may turn out to be a cost-effective way as a durable pressure gauge will save the recurring cost of replacing it.
3. Give Preference to Readability
Readability is one of the primary reasons owing to which the digital pressure gauges are gaining preference over mechanical types. Besides the digital display, these digital gauges come with a backlight to facilitate effortless reading in a dark environment and an easy-to-read presentation.
You will also have to select the right display size. Assess these requirements for your application and accordingly check the readability of the pressure gauge. There are various types of pressure gauges with different price points available in the market depending on their functionalities. Deciding upon the required technicalities will save your money and increase your productivity.
4. Assess the Operating Environment
Every digital pressure gauge has to operate in some environment which includes parameters such as ambient temperature, humidity, air-borne particulate, and certain chemicals. There might be conditions where the temperature is extreme or the ambient conditions are highly corrosive.
Such conditions would require a highly durable pressure gauge. Any discrepancy can result in malfunction and false reading which would result in an inaccurate final result.
After chalking out the installation area and application of digital pressure gauge, you have to make a list of the environmental conditions that the gauge will be exposed to and then find the right digital pressure gauge which can withstand it.
5. Find the Gauge with the Appropriate Connection Size
The pressure gauges are available in various connections such as NPT, JIS, and DIN. These connections are associated with dial sizes.
To select the best connection size, you need to identify other requirements such as process pressure, space limitations, leak integrity, weight, and size of the gauge. Moreover, the location of the connection should also be identified. The connection that fulfills all these criteria can be given a go-ahead.
6. Select the Pressure Sensor with Elements Compatible with the Process Fluid
Pressure sensor of digital pressure gauge are made of different materials. The process fluid is an important component in determining the kind of pressure sensor element.
If there is incompatibility then there are chances of corrosion which can lead to inaccurate results. The better option would be checking the compatibility of the process fluid and pressure sensor element before purchasing a digital pressure gauge.
For Detail information on each types visit our recently published blog.
This blog is originally published on the precisionmass website.
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