Thermocouples ANSI

Mineral Insulated or Fabricated thermocouples, as well as exposed junction thermocouples, in various sizes all in ANSI colours.

Fine Wire Versatile Exposed Junction Thermocouples ANSI

An exposed junction thermocouple is the simplest form of thermocouple. It consists of two pieces of thermocouple wire joined together with a welded bead. Since they can be made very small, an exposed junction thermocouple can provide a very fast response time.

Fast Response Mineral Insulated Thermocouples ANSI

0.25mm, 0.5mm, 0.75mm & 0.81mm Fast Response Mineral Insulated Thermocouples in various styles.

Mineral Insulated Thermocouples ANSI

1mm, 1.5mm, 3mm & 6mm Durable Mineral Insulated type thermocouples to suit a wide range of temperature measurement. Various probe types, lengths and diameters available.

Magnet Thermocouples ANSI

A selection of Magnet Thermocouples in ANSI calibration. 0.7kg to 11.8kg pull strength magnets are available.

Fabricated and Specialist Thermocouples ANSI

Thermocouples with Moulded-on Plugs ANSI

A moulded plug gives a robust construction as well as providing a waterproof termination.

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