General Knowledge of Pressure Gauge Industry
Aug 20, 2019
Classification of pressure gauges:
Liquid Formula (Experimental Formula)
Piston type (experimental type)
Elastic Formula
Relay Fluidization
2. Elastic classification:
2.1. Classification of originals:
Spring tube type, diaphragm type, diaphragm box type and bellows type
2.2. Classification of shell diameter:
Diameter 402
Diameter 503
Diameter 604
Diameter 756
Diameter 100
Diameter 150
diameter 200
diameter 250
2.3. Precision classification:
0.25, 0.4, 1.0, 1.6, 2.5, 4.0
2.4. Pressure classification:
Pressure gauge, vacuum gauge and pressure vacuum gauge.
Negative pressure: -0.1-0 MPa,
micro-pressure: -60-60 kPa,
low pressure: 0-6 MPa,
medium pressure: 10-70 MPa,
high pressure: 70-160 MPa,
ultra-high pressure: > 160 MPa
2.5. Classification of uses:
(1) Medium (Pulse, High Temperature, Low Temperature, Corrosion, Solid Particle, Solidification)
Environment (high temperature, humidity, dust, salt, etc.)
2.6. Classification of installation methods:
(1) Radial (2) Axial (3) Radial (4) Axial (4) Flange (5) Connection (6) Thread connection (metric, British)
