RTD Sensor, Pt100, Thermowell

RTD (resistance temperature detector) sensor can directly connect to secondary instrument by copper conductor, and provide accurate input signal of temperature changes for display instruments, recording instruments, signal conditioners, scanister and computer.

Specification:

1. RTD temperature range and accuracy chart

Note: t is the actual measuring temperature absolute value of the temperature sensing element.
2. Thermal response time of RTD sensor

3. Thermowell installing form (unit: mm)

4. Selection chart

Tips: Pt100 RTD sensor working principle
Pt100 is a kind of platinum resistance, and also a thermistor of positive temperature coefficient, that is, the resistance value rises with the increase of the temperature. Platinum resistance has high accuracy, suitable for neutral and oxidizing medium. It has good stability and can test a wide temperature range (-200~420℃). The most important thing is that platinum resistance has good linearity, that is, when the temperature changes one degree, the increase of resistance value is basically the same. Pt100 resistance value is 100 ohm at 0℃, 18.52 ohm at -200℃ and 175.86 ohm at 200℃. In addition to Pt100, the most commonly thermistor are Pt1000 (platinum resistance of 1000 ohm at 0℃) and Cu50 (copper resistance of 50 ohm at 0℃).