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5 Important Types of Pressure Gauges

As we all know, the pressure gauge is a common instrument used in different industries like automotive, agriculture, industry, etc. It is primarily used for monitoring and troubleshooting the system. The pressure gauges located in the system circuit will analyze the pressure through the circuit and displays readings on it for the technician or engineer.

There are different varieties of pressure measuring devices available. Let’s discuss some of those important types.

Liquid Filled Vs Dry Pressure Gauges:

5 important types of pressure gauges

Dry pressure gauges are commonly used for industrial applications and it prevents corrosion to a greater extent. Dry gauges are ideal for environments without mechanical vibration and moisture presence. In liquid filled pressure gauges, a specific liquid-like glycerine(commonly used) is filled inside the casing. This liquid will coat the internal parts and reduces damages caused by pulsation and pressure spikes. Liquid filled pressure gauges are used in circuits having fast and frequent loads, pressure peaks, and mechanical vibrations. Comparatively, dry gauges are less expensive than liquid-filled gauges.


The manometer is a type of pressure gauge that uses a column of liquid to measure pressure. This instrument can measure only low pressure close to the atmospheric pressure or vacuum. Toluene, CCl4, mercury, alcohol, etc… are the liquids used in the limp of the manometer.  The working principle of the manometer is it uses the same or another column of liquid for balancing. The two categories of the manometer are simple manometer and differential manometer.

Mechanical Pressure Gauges:

5 Important Types of Pressure Gauges

Mechanical pressure gauges are used for measuring high-pressure ranges. In this gauge, the rack and pinion arrangement magnifies the deformation caused by the application of pressure on the elastic element. This magnified value is displayed on the pointer scale for pressure measurement. The mechanical gauges will provide quick and rapid response compared to manometers.

Digital Pressure Gauges:

Digital pressure gauges are commonly used with temporary industry applications that require highly accurate pressure reading.  The reading on the digital display can be interpreted without operator assistance. Also, this pressure gauge eliminates chances for parallax error and it can be re-ranged easily. This pressure gauge requires external energy like battery power, loop power, or solar power for operation.

5 Important Types of Pressure Gauges

Wireless Pressure Gauge:

5 Important Types of Pressure Gauges

The wireless pressure gauges are the modern edition of pressure gauge that can transfer the pressure reading directly to other devices. This pressure gauge will provide stable and accurate pressure readings compared to mechanical gauges. The important advantage of this pressure gauge is that the data can be collected remotely. For this remote data collection, a wireless sensor networking technology called WirelessHART is utilized. This technology is based on the Highway Addressable Remote Transducer Protocol(HART Protocol).

This article introduces five important types of pressure gauges for you. Hope to help you choose the proper pressure gauge.

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