High Temperature Sensors
MI Thermocouple with ceramic plug & socket
Featuring the Mineral Insulated Thermocouple with Miniature Ceramic Plug & Ceramic Socket (650°C)Type K IEC
Ceramic Kiln Thermocouples
Ceramic thermocouples for furnaces, kilns and other high temperature applications
Rare Metal Thermocouples RMT STYLE
Rare metal thermocouple R , S and B assemblies. Rare metal thermocouples are made from conductors containing platinum and rhodium alloys and are suited for measuring high temperatures up to 1700°C.
Cant find what your looking for?
Please complete our custom configurator forms and send us your specific requirements and build your own sensor.
We are specialists in the design and manufacture of custom-built temperature sensors. Quality and Service are key elements in the continued growth of Labfacility; technical support for both sensing and instrumentation is always freely available from our experienced technical sales teams.
Comparison of Sensor Types
| Thermocouple | Platinum Resistance Thermometer | Thermistor | |
|---|---|---|---|
| Sensor | Thermoelement, two dissimilar metals/alloys |
Platinum-wire wound or flat-film resistor | Ceramic (metal oxides) |
| Accuracy (typical values) | 0.5 to 5.0°C | 0.1 to 1.0°C | 0.1 to 1.5°C |
| Long term Stability | Variable, Prone to ageing | Excellent | Good |
| Temperature range | -200 to1750°C | -200 to 650°C | -100 to 300°C |
| Thermal response | Sheathed – slow Exposed tip – fast 0.1 to 10 secs typical | Wirewound – slow Film – faster 1-50 secs typical |
generally fast 0.05 to 2.5 secs typical |
| Excitation | None | Constant current required | None |
| Characteristic | Thermovoltage | PTC resistance | NTC resistance (some are PTC) |
| Linearity | Most types non-linear | Fairly linear | Exponential |
| Lead resistance effect | Short cable runs satisfactory | 3 & 4 wire – low. 2 wire – high | Low |
| Electrical “pick-up” | susceptible | Rarely susceptible | Not susceptible |
| Interface | Potentiometric input. Cold junction compensation required | Bridge 2,3 or 4 wire |
2 wire resistance |
| Vibration effects/ shock | Mineral insulated types suitable | wirewound – not suitable. Film – good | Suitable |
| Output/ characteristic | From 10µV/°C to to 40µV/°C depending on type |
approx. 0.4 W/°C | -4% / °C |
| Extension Leads | Compensating cable | Copper | Copper |
| Cost | Relatively low cost |
Wirewound – more expensive Film – cheaper |
Inexpensive to moderate |
Comments and values shown in this chart are generalised and nominal. They are not intended to be definitive but are stated for general guidance.