Category
HVAC Cable Temperature Sensors
A flexible cable sensor for measuring temperature in pipes, tanks and tight spaces.
A cable temperature sensor puts a small Pt1000 element in a stainless steel sleeve on a flexible cable, for points a rigid probe can't reach. The Produal TEKY4 is IP67 rated against water and dust, built for cold rooms, refrigerated spaces, equipment interiors and pipe or tank surfaces where a thermowell isn't available.
1 Product · Cable Temperature Sensors
Selection guide
HVAC Cable Temperature Sensors Guide
What the TEKY4 cable sensor is used for
Some temperature points are simply awkward: inside an AHU or fan coil unit, along a curved pipe run, on a tank surface, or in a cold room where a rigid stem sensor won't fit the geometry. The TEKY4's flexible cable and small stainless steel sensor tip route into those spaces and can be secured with a cable tie or clip, while the IP67 rating keeps moisture and condensation out in refrigerated environments.
How to choose a cable temperature sensor
- Element: Pt1000 to EN 60751 class B, 1000 Ω at 0 °C, matching the same resistance input as the other passive sensors on this site.
- Protection: IP67, suited to cold rooms, wash-down areas and condensing conditions where a standard housing would fail.
- Mounting: the flexible cable and compact stainless sensor tip let you route through gaps and around obstructions that a rigid probe can't clear.
- Cable length to controller: keep the run to the BMS input under about 30 to 50 m, since it's a passive resistance sensor; beyond that, cable resistance biases the reading.
- Signal type needed: if the controller only takes 4 to 20 mA, choose the transmitter version instead.
For a 4 to 20 mA version for the same cold-space applications, see the TEKY4 LL under HVAC temperature transmitters. For an industrial RTD probe with a process fitting, see RTD temperature probes.
FAQ
Common questions
What protection rating does the TEKY4 cable sensor have?
IP67, which protects it against temporary immersion in water and against dust ingress. That makes it suitable for cold rooms, wash-down areas and other damp or condensing locations where a lower-rated sensor housing would eventually fail.
Which sensing element does the TEKY4 use?
A Pt1000 element with 1000 Ω resistance at 0 °C, to EN 60751 class B tolerance, the same element type used across Produal's other passive HVAC sensors. This keeps it compatible with any BMS controller already reading Pt1000 room or duct sensors.
Is a 4 to 20 mA transmitter version of the TEKY4 available?
Yes, the TEKY4 LL, which adds a transmitter to output 4 to 20 mA instead of a raw Pt1000 resistance. Choose it when the cable run to the controller is long or the input only accepts an analogue current signal.
Where is a cable temperature sensor better than a rigid probe?
Inside equipment such as AHUs and fan coil units, along curved or congested pipe runs, in cold rooms, or on tank and pipe surfaces where there's no thermowell to insert a rigid stem sensor. Its flexible cable and compact sensor tip route into spaces a fixed probe simply can't reach.
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