(1) Precision pressure gauge - generally refers to a special instrument for calibrating common pressure gauges, called precision pressure gauges, the accuracy level is very high, generally above 0.5, and the accuracy of ordinary gauges is 2.5.
(2) General pressure gauge - refers to some common pressure gauges commonly used in life, the pressure is generally in the range of 2.5MP (25Kg). For example: water pressure gauge, boiler pressure gauge, gas air pressure gauge, etc.
(3) Ultra-high pressure gauge - generally refers to a pressure gauge of tens to hundreds of kilograms called a high-pressure pressure gauge.
(4) Special pressure gauge for anti-corrosion medium - special pressure gauge used in toxic liquid or gaseous medium with strong corrosion. Example: used in ammonia, ammonia water, liquid ammonia, gas, methane, strong acid, strong alkali, etc.
