Bourdon tube pressure gauge:
The bourdon tube sensitive element is an elastic C-shaped tube bent to a round shape with an elliptic cross-sectional area. The pressure of measuring medium acts on the inside of the wave tube so that the elliptical section of the Bourdon tube tends to be circular. Due to the small deformation of Bourdon tube, a certain ring stress is formed. This cyclic stress will cause bourdon tube to extend outward. Since the head of the elastic Bourdon tube is not fixed, it will produce a small deformation, the size of the deformation depends on the pressure of the measuring medium. The deformation of bourdon tube is indirectly indicated by the pointer through the movement to measure the pressure of the medium.
Diaphragm pressure gauge:
the diaphragm sensitive element consists of two connected diaphragms showing circular waves. The pressure of the measuring medium acts on the inside of the membrane cavity, and the resulting deformation can be used to measure the pressure of the medium indirectly. The magnitude of the pressure value is indicated by the pointer. Diaphragm pressure gauges are generally used to measure gas pressure, and can measure micro pressure, overpressure protection is also possible to a certain extent. When several cartridge sensors are stacked together they produce a large transfer force to measure very small pressures.
Explosion-proof pressure gauge:
explosion-proof pressure gauge suitable for use in flammable and explosive occasions, it is different from ordinary pressure gauge, explosion-proof pressure gauge requirements are higher, the first is high safety factor is not high, explosion-proof pressure gauge types are many, how to choose suitable for their own pressure gauge, it is about to consider the whole. Explosion-proof pressure gauge by explosion-proof coefficient points: intrinsically safe explosion-proof pressure gauge and explosion-proof pressure gauge. According to the performance: electric contact explosion-proof pressure gauge, pointer type explosion-proof pressure gauge, digital display explosion-proof pressure gauge.
Explosion-proof electric contact pressure gauge:
explosion-proof electric contact pressure gauge of flame-proof shell has the good explosion-proof performance, therefore the explosion-proof electric contact pressure gauge in normal work process because of the influence of the sparks or electric arc, in addition to shell under internal explosive gas mixtures at once an explosion caused by the explosion pressure, and can effectively prevent the resulting heat energy outward spread smoothly, And can only slowly diffuse outward along the small gap of the flameproof joint inside the shell. At this point, the instantaneous temperature transmitted to the outside of the shell has been reduced to the explosive gas mixture of the ignition point temperature, so it will not lead to detonation.
Explosion-proof digital (pointer) display pressure gauge:
high precision, high stability, error ≤1%, internal power supply, micro power consumption, stainless steel shell, strong protection, beautiful and delicate. Explosion-proof digital display pressure gauge is widely used in petroleum, chemical industry, metallurgy, power station and other industrial departments or mechanical and electrical equipment supporting the measurement of various fluid media pressure has the danger of explosion.
Vacuum pressure gauge:
vacuum pressure gauge is used to measure the pressure or negative pressure of liquid, gas or steam medium which has no corrosive effect on steel, copper and copper alloy and has no explosive danger and does not crystallize or solidify. The shockproof vacuum pressure gauge is used to measure the negative pressure of non-corrosive, non-crystallizable media under vibration and pressure fluctuations. Electric contact pressure vacuum gauge and electric contact vacuum gauge for copper and copper alloy without corrosion, no explosion danger of amorphous, non-solidified liquid, gas and other media (pressure) and negative pressure measurement, when the pressure reaches a predetermined value, with the help of contact device, can be connected or disconnected control circuit, while sending electrical signals.
Vacuum pressure gauge classification:
Vacuum pressure gauge is based on atmospheric pressure, used for measuring greater than or less than atmospheric pressure instrument.
Shockproof vacuum pressure gauge is a classification of shockproof pressure gauge. It is used for measuring the negative pressure of non-corrosive and non-crystallized media under vibration and pressure fluctuation.
Electric contact vacuum pressure gauge and electric contact vacuum gauge Copper and copper alloy no corrosion, no explosion danger of non-crystallized non-solidified liquid, gas and other media (pressure) and negative pressure.
Stainless steel pressure and vacuum gauge is used to measure the pressure and negative pressure of stainless steel 316,316L and 0Crl8Ni12MO2Ti non-corrosive liquid and gas medium. All stainless steel has better corrosion resistance to the environment.
Acidproof pressure vacuum gauge is used to measure the pressure and negative pressure of nitric acid and alkali liquid medium; Acidproof vacuum gauge is used to measure the negative pressure of nitric acid and alkali liquid.
