What are the different types of pressure sensors?
Ceramic capacitive sensor |
Ceramic piezoresistive sensor |
MEMS |
MEMES |
MSG |
Pressure film sensor |
|
Pressure range |
0.01-200 BAR | 0.2-200 BAR | 0.001-50 BAR | 0.01-500 BAR | 10-3000 BAR | 1-3000 BAR |
Measured item |
Water, fuel, gas, refrigerant, acid | Water, fuel, gas, refrigerant, acid | Air | Water, fuel, gas, refrigerant | Water, oil, gas, refrigerant | Water, oil, gas, refrigerant |
Overload capacity |
Very good 10-100 times |
Very bad 2-3 times |
Good 2-10 times |
Normal 2-5 times |
Normal 2-5 times |
Normal 2-5 times |
Temperature drift coefficient |
No need for temperature compensation | Need for compensation temperature | Need for compensation temperature | Need for compensation temperature | Need for compensation temperature | Need for compensation temperature |
Long-term stability |
Good | Bad | Normal | Good | Good | Good |
Cost |
Low | Low | The weakest | Normal | Normal | High |
Benefits |
Low cost in low and medium pressure | Low cost in medium and high pressure | Low cost in low and medium pressure | High precision at medium and high pressure | Low cost at high pressure | High precision at medium and high pressure |
disadvantage |
Significant price increase if high precision is required | Low long-term stability | Low corrosion resistance | Complex manufacturing process | Low sensitivity at low and medium pressure | Insulation less than 500V |
Application |
Automotive, air, air conditioning, pre-chemicals, water distribution | household appliances (low requirements) | Automotive, telephony, medical | Control and measuring instrument | Fuel injection system and braking system | Aerospace, high-speed train, oil extraction |