Thermistors are resistive devices usually made of metal oxides formed into a bead and encapsulated in epoxy or glass. Thermistors show a large negative temperature coefficient. Their resistance drops dramatically and non-linearly with a temperature increase. A thermistor’s sensitivity is many times that of an RTD, but its useful temperature range is limited.
Specialty Sensors:
Precision Centigrade Temperature Sensors:
This sensor probe utilizes a dual precision integrated-circuit temperature sensor, whose output voltage is linearly proportional to the Celsius temperature.
2000 Ohm RTD Sensors:
This sensor probe is a fast responding 2000 ohm RTD sensor used widely in the hvac, appliance and automotive industries.
Spring-Loaded Surface Contact Thermocouples
This Type J thermocouple is used to sense the temperature of moving drums or rollers.
Compound Mixer Thermocouple:
This Type J thermocouple is used in mixers and pelletizers.
Thermistors:
- 316 Stainless Steel Sheath
- Glass Encapsulated Thermistor Element
- Fast Response Time
- Up to 572°F (300°C) Operating Temperature (Limited to Wire Insulation Material; See Box 8)