The advantages and disadvantages of the thermometer thermometer relative to other type

In domestic for tanks and tank level measurement solutions mainly has the following several ways: 7 b2 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

1, static pressure type: there are two kinds of one is input type, one is installed at the bottom of the tank bottom or side, is the direct contact with the medium pressure sensor, the pressure of liquid is used to figure out the height of the liquid. The advantage is cheap, direct contact with the media. Weakness: the volatile liquid, measurement accuracy will be affected. Liquid is strong corrosive or viscosity is very big, also is weak, sealing pressure tanks res. The temperature of the liquid to be measured and not too high. More impurities or easy to be crystallized media also shoulds not be choose the product to be tested. 7 b2 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

2, differential pressure type: is double flange level transmitter, is targeted at itself in a sealed tank and tank pressure tanks, use of upper and lower pressure difference method to calculate the height of the liquid level. Advantages are: for sticky liquid can also be measured, longer service life. The disadvantage is that: there is a limit to the range of measurement, pressure and temperature have certain limitation. 7 b2 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

3, ultrasonic: is the use of acoustic receiver principle, do not need to contact with the liquid. Advantage is cheaper, more health, can detect high corrosive medium. The occurrence of ultrasonic receiving is higher, to the requirement of environment under the condition of the environment is bad, ultrasonic thermometer is not applicable. 7 b2 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

4, radar, radar, thermometer is the use of microwave pulse transmitting and receiving to measure the depth of the liquid, radar scoring contact type and non-contact temperature two forms. Microwave emission does not need to medium, so in the case of vacuum can be measured. In addition, the radar can be used in a harsh environment, than the use of ultrasonic range wants wide. Is the price is quite high. 7 b2 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

5, magnetic flap thermometer: using the magnetic coupling principle, to measure the height of liquid level, the advantages are: high precision, good repeatability and long service life, temperature, pressure, measurement range has a larger space. Defect is: heavier, more long, for larger range difficult to transport. 7 b2 magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer