Device

Semiconductor

IR Sensor

Thermistor

Platinum RTD

Measured Parameter

Voltage/Current

Electromagnetic waves

Resistance

Resistance

Advantages

· Inexpensive

· Liner output

· Low cost

· Ease of use

· Compact & Lightweight

· Moving object sensing

· Cost

· Rugged

· Highly sensitive

· Flexible

· Accuracy

· Linearity

· Stability

Disadvantages

· Slow response time

· Electrical noise

· Accuracy

· Limited application

· Stability for long term

· Not for gas and liquid

· Marginal accuracy

· Expensive

· Ideal medium

· Non-linearity

· Moisture failure

· Self-heating

· Fragile

· Error by lead resistance

· Slow response time

· Limited configurations

· Size