What is the difference between a diaphragm pressure gauge and an ordinary pressure gauge?
Micro pressure gauge, also known as bellows pressure gauge, is a special pressure gauge for measuring negative pressure and micro pressure. The bellows is used as a sensitive element. Its pressure measurement range is -80-60000Pa, which belongs to low micro pressure, so it is called micro pressure. surface. The diaphragm pressure gauge is a kind of pressure gauge. Compared with the ordinary pressure gauge, the micro pressure gauge has certain differences in the measurement range, accuracy grade, unit of use, inner material, and purpose. Let's take a look at the diaphragm pressure gauge.
1. What kind of pressure gauge is the diaphragm pressure gauge?
The bellows pressure gauge is a pressure gauge that uses the bellows as the sensitive element to measure the pressure. Under the action of the pressure of the measured medium, the free end of the corrugated bellows will produce corresponding elastic deformation, and then it will be transmitted and amplified by the gear transmission mechanism. , the measured value is indicated on the dial by the pointer fixed on the gear shaft.
Due to the measurement range of -80-60000Pa, the membrane box pressure gauge is relatively small and the pressure is low. It is often used to measure the micro-pressure and negative pressure of corrosion and explosion dangerous gases in copper alloys. It is widely used in boiler ventilation, gas Pipes, combustion devices, etc.
2. What is the difference between a diaphragm pressure gauge and an ordinary pressure gauge?
The bellows pressure gauge uses the bellows as the sensitive element to measure the tiny pressure. Measure the micro-pressure and negative pressure of the gas that does not corrode copper alloys and has no explosive danger. Under the action of the pressure of the measured medium, the diaphragm is forced to produce corresponding elastic deformation - displacement. Pre-enlarged, the measured value is indicated on the dial by the pointer fixed on the gear. There are certain differences from ordinary pressure gauges, the main differences are:
1. Pressure gauges include diaphragm pressure gauges, which are usually used to measure gas or micro pressure. The measuring medium of the pressure gauge is relatively wide.
2. Measuring range. The bellows pressure gauge mainly measures micro pressure and sound pressure. Depending on the type of pressure gauge, the pressure range that can be measured is also different.
3. The accuracy level is the same. There are many accuracy grades of general pressure gauges, often 1.6, 2.5, and some higher. Because microns are only used to measure micro pressures, the accuracy level doesn't have to be too high, typically only 2.5.
4. The indicated pressure units are different. The pressure units of ordinary pressure gauges are MPa, kpa, bar, mbar, Pa, KG/CM, etc. The measuring range of diaphragm pressure gauges is limited, generally only kpa.
5. The inner core, the common pressure gauge uses a spring tube as the inner core, while the inner core of the diaphragm pressure gauge is made of diaphragm material.
6. Purpose. Ordinary pressure gauges are used to measure pressures such as oxidizing liquids and gases, and diaphragm pressure gauges are mainly used in two aspects. One is to measure the pressure on the seat with anti-oxidation application and the other is the pressure of food hygiene application. This is the difference between the diaphragm pressure gauge and the ordinary pressure gauge. When choosing, you can choose the appropriate one according to your needs.
