May we know best thermometer is the bimetallic thermometer, because it appears in all areas of life, however, pressure type thermometer is almost set the glass rod thermometer, bimetallic thermometer, all the advantages of the gas pressure thermometer, it can be made into shock, anti-corrosion type, and can realize remote contact signals, heat resistance, 0 10 ma, or 4 20 ma signal. Model: 400 rf21022f types: pressure type thermometer structure: the axial connection: no tooth installation: flange material: before the SS304 stainless steel surface diameter: 100 mm heat pipe diameter: 10 mm heat pipe length: 150 mm capillary length: 1000 mm temperature range: - 20 - 160℃, ℉ ( Can be customized) Accuracy: & plusmn; Table: 2% glass oil-filled type: glycerine filling protection grade: IP55 ( Dust, water) The scope of application: remote reading, shockproof requirements, refrigeration equipment, Marine machinery pressure type thermometer with a bulb, such as small volume, fast response, high sensitivity, reading intuitive features, is currently the most widely use scope, performance is one of the most comprehensive mechanical thermometer table. Pressure type thermometer is the use of sealed container of liquid, gas or saturated steam heated volume expansion and pressure changes as the signal. Its basic structure is made up of bulb, capillary and indicator of three parts. It is one of the earliest methods of temperature control applied in the production process. Pressure type temperature measuring system now is still on the instructions and control is widely used in the temperature measurement method. Pressure type thermometer is: the advantages of simple structure, high mechanical strength, is not afraid of vibration. The price is low, does not need external energy. Defect is: limited temperature range, generally in - 80~400℃； Heat loss due to slower response time; Instrument sealing system ( Bulb, capillary, spring tube) Damage is difficult to repair, must be replaced. Measuring accuracy are greatly influenced by environmental temperature, temperature package installation location, accuracy is relatively low; Capillary transmission distance is limited, ability is limited, etc. , that is the characteristics of pressure type thermometer.