How to Choose a suiteble Fuji transmitter for chemical Industry？
In the chemical industry, The process instruments is used in large quantity, among which Fuji pressure transmitters and Fuji differential pressure transmitters are the most important product types, occupying a large proportion of Fuji transmitters.
The material of Fuji transmitter includes the diaphragm and wetted material of transmitter, flange material, shell material, exhaust/drain valve material, sensor filling liquid material, capillary filling liquid material, bolt and nut material, etc. The most important things to pay attention to in the selection are the diaphragm and the wetted material, the flange material, and the shell material.
The wetted material is actually the part of the material installed on the Fuji pressure transmitter that is in direct contact with the medium, mainly for easy of installation.
At the same time, the wetted material is also different. What type of wetted material is used depends on the medium we measure, such as viscous liquid, mud, solvent or corrosive material, etc. Usually, the connection of Fuji pressure transmitter The liquid material is 316 stainless steel.
According to the different chemical properties of the medium, the selection is made, and the corrosiveness of the same medium with different concentrations at different temperatures is also different.
Diaphragm sealed transmitter, the inner diaphragm is generally made of stainless steel, and the liquid-contacting outer diaphragm is selected according to the characteristics of the medium.
The following are the diaphragm material selections for several common media in Fuji transmitters
|
Media |
Diaphragm material |
|
polyether |
316L |
|
Propylene oxide |
316L |
|
formaldehyde |
316L |
|
1.4-Butanediol |
316L |
|
steam, air, nitrogen |
316L |
|
acrylic |
316L |
|
industrial water |
316L |
|
Chlorine |
Tantalum |
|
hydrochloric acid |
Tantalum |
|
barium salt |
Tantalum |
|
brine |
Titanium or Tantalum |
|
32% alkali |
Hastelloy C |
|
144℃ 50%alkali |
nickel |
|
43% alkali |
Hastelloy C or Nickel |
|
Sodium hypochlorite |
Titanium or Tantalum |
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