的精度等级分类十分明晰。 The accuracy level classification of pressure gauges is very clear. Accuracy grades should generally be marked on their dials, and their markings should be specified accordingly. For some pressure gauges with very low accuracy levels, such as those under level 4, there are still some that do not need
To measure the accurate pressure value, only the pressure range needs to be indicated, such as the pressure gauge on the fire extinguisher, the accuracy level may not be marked.
The pressure gauge series is complete. It has not only conventional series, but also digital series; not only ordinary media application series, but also special media application series; not only switch signal series, but also remote transmission signal series, etc.
For practical needs, it has formed a complete series. The specifications and models of the pressure gauge are complete and the structure is perfect. The application of pressure gauges is extremely common, and it covers almost all industrial processes and scientific research fields. In the heat pipe network, oil and gas
Transmission, water supply and gas supply systems, vehicle maintenance and repair shops, etc., pressure gauge applications can be seen everywhere.
种类很多，它不仅有一般（普通）指针指示型，还有数字型；不仅有常规型，还有特种型；不仅有接点型，还有远传型；不仅有耐振型，还有抗震型； There are many types of pressure gauges , not only general (ordinary) pointer type, but also digital type; not only conventional type, but also special type; not only contact type, but also remote transmission type; not only vibration resistance type, but also earthquake resistance type;
Not only diaphragm type, but also corrosion-resistant type ...
From the perspective of the installation structure type, there are direct installation, flush-mounted and convex mounting, of which the flush-mounted type is divided into radial flush-type and axial flush-type, and convex-type also has radial convex-type and axial Convex mounted points.
Direct mounting type is divided into radial direct mounting type and axial direct mounting type. Among them, the radial direct installation type is the basic installation type. Generally, when the installation structure type is not specified, it refers to the radial direct installation type. Direct axial installation
The mounting type considers the stability of its own support, and is generally only selected on pressure gauges with a nominal diameter of less than 150mm. The so-called built-in and convex-type pressure gauges are the pressure gauges with edge (mounting ring) we often say. Axial flush-mounted
Both the axial front band edge and the radial embedded type refer to the radial front band edge and the radial convex type (also called wall-mounted type) refer to the radial rear band edge pressure gauge. From the measurement range and range section, the positive pressure range is divided into the micro pressure range section and the low pressure range.
Range, medium pressure range section, high pressure range section, ultra high pressure range section, each range section is subdivided into several measurement ranges (meter range); 3 types of negative pressure (vacuum gauge); positive and negative pressure
The joint pressure gauge is a pressure gauge that spans the range. 。 Its standard name is pressure vacuum gauge, also called vacuum pressure gauge . It can measure not only positive pressure, but also negative pressure.