2.3 Inch 60MM Industrial Capsule Pressure Gauge

• Product Description

Diaphragm pressure gauges, also known as micro-pressure gauges, come in various types, including stainless steel diaphragm pressure gauges, rectangular diaphragm pressure gauges, and overpressure-protected diaphragm pressure gauges. They are primarily used to measure low pressures of liquids, gases, or vapors that are non-explosive, non-crystallizing, non-solidifying, and corrosive to copper and copper alloys.

Diaphragm pressure gauges use a diaphragm as the sensitive element for measuring minute pressures. They are widely used in boiler ventilation, gas pipelines, combustion devices, and other similar equipment to measure low and negative pressures of gases that corrode copper alloys but are not explosive.

Stainless steel diaphragm pressure gauges are made entirely of stainless steel for both the pressure-conducting system and the housing. They are used in processes requiring high corrosion resistance to measure low and negative pressures of various gaseous media.

Stainless steel diaphragm pressure gauges are corrosion-resistant micro-pressure gauges developed based on the structural characteristics of traditional diaphragm pressure gauges. They are used in boiler ventilation and gas pipelines, among other equipment, to measure low and negative pressures of various gaseous media in processes requiring high corrosion resistance.

Structural Principle

The instrument consists of a measuring system (including connectors, corrugated diaphragm, etc.), a transmission mechanism (including a lever mechanism and gear transmission mechanism), indicating components (including a pointer and dial), and a housing (including the case, bushing, and dial glass). The instrument works on the principle that the free end of the corrugated diaphragm undergoes elastic deformation under the pressure of the measured medium. This deformation is then amplified by the gear transmission mechanism, and the pointer, fixed to the gear shaft, indicates the measured value on the dial. A zeroing device is also included for easy adjustment of the zero position.

The measuring range of the diaphragm pressure gauge is -80 to 60000 Pa. However, different diaphragm pressure gauges should be selected according to different pressure ranges. For pressures between -1000 Pa and 60000 Pa, a disc-type diaphragm pressure gauge is recommended; for pressures between -80 Pa, a rectangular diaphragm pressure gauge is recommended.

Main technical specifications of diaphragm pressure gauge

1. Scale range, accuracy class, and weight

2. Measurement range (kPa):

 0～2.5; 0～4; 0～6; 0～10; 0～16; 0～25; 0～40; 0～60; -2.5～0; -4～0; -6～0; -10～0; -16～0; -25～0; -40～0; -2～2; -3～3; -5～5; -8～8; -12～12; -20～20; -30~30

3. Resistance to vibration in the working environment: V·H·3 level

Diaphragm pressure gauge external dimensions

Working location and environment; the instrument is installed vertically; the working environment is -25 to 55℃, the relative humidity is not greater than 80%, and the surrounding environment does not contain harmful gases that corrode the instrument;

The differences between diaphragm pressure gauges and pressure gauges are as follows:

1. Ordinary pressure gauges are used to measure the pressure of non-oxidizing liquids and gases.

2. Diaphragm pressure gauges are typically used in two areas: (1) measuring pressure in applications requiring oxidation resistance (the measured medium is oxidizing, and different diaphragm materials are required for different oxidizing media); (2) food hygiene applications, as the measured medium does not move outside the pressure gauge when measuring pressure with an ordinary pressure gauge, making it prone to repeated contamination. The measurement principle of a diaphragm pressure gauge is as follows: the diaphragm pressure gauge adopts indirect measurement. Under the pressure of the measured medium, the diaphragm pressure gauge deforms, the sealing liquid is compressed, forming a pressure equal to P, which is transmitted to the pressure instrument to display the pressure value of the measured medium. It is suitable for measuring the pressure of liquids, gases, or particulate solids with high viscosity, easy crystallization, high oxidizing properties, and high temperature. Diaphragm pressure gauges are available in various materials to adapt to different oxidizing media.

Applications:

Diaphragm pressure gauges are suitable for measuring micro-pressures and negative pressures that do not corrode copper alloys and pose no explosion hazard. Gas pressure gauges are widely used in equipment such as boiler ventilation and gas pipelines; diaphragm pressure gauges can be installed locally and provide on-site indication.