Medical Device Temp Sensors
As we age and demands on our personal health increase from day-to-day, the need for new medical device solutions increases accordingly too. Our range of NTC Thermistor sensors helps to meets those needs and also those of future medical device designs.
Semitec ET series Thermistors are small, fast-responding bead NTCs and have long been associated with clinical thermometer applications.
More recently, the Semitec F micro miniature sensor is fast becoming an industry standard used in ablation and various other catheter types. The F micro sensor uses our unique thin-film FT thermistor as its sensing element and smaller and smaller iterations of the FT now means that a 0.28mm diameter temperature sensor is possible – the thermal time constant for this size of sensor is as fast as 20 milliseconds!
The FT Thermistor is an 0402 (or smaller 0201) size thin-film NTC sensor on a 150micron ceramic substrate that helps to produce an exceptionally fast thermal response. As well as being used in various fast-response temperature sensors, it is also now used as the main temperature sensing element in diabetic patch monitors. Future FT designs will be even smaller allowing for other minimally invasive applications as well as potentially internal organ monitoring.
Other Products and Services from ATC Semitec
Fast Response Temp Probes
Some temperature control applications, such as domestic showers and instant water heaters, require a very fast thermal response of 1 second or less. This is to maximise the thermal efficiency of the device and avoid potential scalding of the user.
In response to this, ATC Semitec stock a number of very fast-response temperature probes where the NTC thermistor is situated in the very tip of the sensor. This reduces the thermal path to the thermistor and thus minimises the thermal response time. Response times can be further accelerated by using our thin wall tip or exposed NTC sensor.
Our standard sensor assembly packages include: screw threaded bosses, bayonet fittings and push-fit/clip-in designs – all of which are available with flying leads and/or industry standard connector options.
CWW Ceramic Wire-Wound RTD Elements
CWW Ceramic Wire-Wound platinum RTD Elements from Sensor Technology Ltda. are characterised by their extremely high stability, high-temperature capability and high accuracy over a very wide temperature range. Sensors can measure the temperature of gases, liquids and solids, from -196ºC to 850ºC, with a precision between 0.012Ω and 0.12Ω at 0ºC or between 0.03°C and 0.3°C at 0°C.
The ceramic RTD construction design consists of a platinum wire coil (or for Duplex versions, two coils) encapsulated in a very high purity, aluminium oxide ceramic tube. The empty spaces remaining between the platinum coil and the internal tube walls are filled with a material which allow the platinum contraction and expansion movement during temperature variations.
CWW RTD elements have multiple applications, such as laboratory, process technology and high value-added equipment. Applications where a highly accurate measurement is necessary should be built with this sensor type and 4 extension wires, however 3-wire construction is the most commonly found.
Waterproof Temperature Sensors
For an ultra-reliable, waterproof temperature sensor with IP67 or IP68 integrity, then look no further than our range of TPE-encapsulated sensors. These over-moulded NTC Thermistor probes use the same TPE moulding material as the integral lead-wire’s insulation. By using double-insulated or single-insulated TPE cable, a true waterproof seal is created by the fusion of the two insulating materials making the sensors suitable for direct immersion in the media being measured. This makes them ideal for refrigeration, air-conditioning, underfloor heating and heat pumps, solar and other green energy solutions.
Our IP67 and IP68 waterproof sensors can be fitted with any NTC Thermistor from our AP-2, AT-2, ATCD, NT-4 or SP series ranges. From this very wide range of R25 and B values, we can match or fine-tune the sensor specification to meet your application requirements. Also Pt100, Pt500 or Pt1000 RTD elements are now available in IP67 or IP68 versions. ATC Semitec now stock the YAGEO NEXENSOS EC3032 an IP68 rated RTD temperature sensor
Cable lengths can be supplied from 100 mm up to 10 metres long so that you have a single uninterrupted sensor cable helping to ensure product integrity. Metal tips or stainless-steel housings can be added to help increase their physical robustness where an abrasive sensing environment could be encountered. For even harsher environments, shielded cable options and armoured cabling is also available.
ATC Semitec
Unit 14, Cosgrove Business Park, Anderton, Northwich, Cheshire, CW9 6FY, United Kingdom
ATC Semitec is the UK’s top distributor of thermal components, offering NTC thermistors, platinum RTDs, thermostats, and more. We support engineers in energy-efficient product development across industries. Committed to sustainability, we’re on a Pathway to Net Zero and have earned the Ecovadis Silver Award.