Do you know the correct selection of lining materials for electromagnetic flowmeters? Posted by : admin / Posted on : Oct 09， 2020

The correct selection of lining materials for electromagnetic flowmeters:

The lining material should be selected according to the corrosiveness, abrasiveness and temperature of the measured medium:
1. Natural rubber (soft rubber)
1. Good elasticity, wear resistance and tearing force
2. Resistant to general weak acid and weak alkali corrosion
3. Measure water and sewage
2. Acid-resistant rubber (hard rubber)
It can withstand the corrosion of hydrochloric acid, acetic acid, oxalic acid, ammonia, phosphoric acid and 50% sulfuric acid, sodium hydroxide, potassium hydroxide at room temperature, but it is not resistant to strong oxidants.
Test general acid, alkali, salt solution
3. Neoprene (Neoprene)
1. Excellent elasticity, high breaking force, good wear resistance
2. Resistant to the corrosion of low-concentration acid, alkali and salt solution, but not to the corrosion of oxidizing medium
<80℃;
Measuring water, sewage, mud and ore slurry
4. Polyurethane (Polyurethane)
1. Excellent wear resistance
2. Poor acid and alkali resistance
<40℃
Measure neutral and strong abrasion coal slurry, mud and ore slurry
5. Polytetrafluoroethylene (PTFE)
1. Resistance to boiling hydrochloric acid, sulfuric acid, nitric acid, aqua regia, concentrated alkali and various organic solvents
2. Good wear resistance and poor bonding performance
-80～+180℃;
Measure concentration, strong caustic solution and sanitary medium