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Reference GKTR026D / RR

Sensor type KTR 026D / R

Sensitive element type all types

Temperature difference

-40 ° C to 120 ° C (the measuring range can be extended - see tme modifications)

Protection class IP 67 according to EN 60529

Case dimension 6 x 6 mm

Case length

30 to 60 mm

The radius of curvature of the contact surfaces

R = according to R of the pipe

Housing material brass

Shielded RADOX input cable 2 x 0,5 mm2

Wire resistance

0,142 Ω for 1 m of cable for 2-wire connection

Response time τ0,5 <4 s (in running water at 0,4 ms-1)

Isolation resistance

> 200 MΩ at 500 VDC, temperature 25 ° C ± 3 ° C, humidity <80%

Average life ≈ MTTF * 1,95 x 106 h

* Under the environmental and operational conditions specified in the approved test methodology.


Shock and vibration tests

category 2 according to EN 61373

Insulation test 4 kVDC for 1 minute according to EN 50155

Fire resistance

according to EN 45545 and according to NFPA 130


The KTR0 26D / R temperature sensor is designed to measure the surface temperature of solid substances with a smooth surface. In the segment of rail vehicle applications, it is used, for example, to measure the temperature of water and transport sewage pipelines or of cooling system pipelines of diesel engines or diesel-electric locomotives and units. The sensor is part of the system ensuring that the pipes are not frozen.

The temperature range is -40 ° C to 120 ° C and these limits should not be exceeded even for a short time. The sensor consists of a brass block, one area of ​​which has a special radius concave recess for surface contact with the pipeline being measured. The sensor can be used for all control systems compatible with the types of detection elements listed in the technical parameters table. The sensor conforms to the degree of protection IP 67 according to standard EN 60 529, as amended.

The sensor is attached to the pipeline using mounting tape with a screw lock and in the context of anti-freeze systems it must not be thermally insulated at all, unlike in other applications.

The sensor is designed to operate in a non-aggressive environment.


Type tests are carried out by a notified body according to standard EN 50155, as amended, Railway applications - Electronic equipment used on rolling stock, Art. 12.2.9, 12.2.11

- Insulation test according to EN 50155, as amended

- Shock and vibration tests according to EN 61373, as amended

The product meets the parameters in accordance with EN 45545-2, as amended, Fire protection of railway vehicles - Part 2: Requirements for the fire behavior of materials and components. The materials also meet the requirements of the NFPA 130 fire safety standard, as amended.

- A precision class A (with the exception of Ni 10000/5000, Ni 10000/6180, T1 = Ni 2226, NTC 20 kΩ)

If the shielded silicone cable is changed (not in accordance with standard EN 45545-2):

- temperature range -50 ° C to 200 ° C

- possibility of enclosing two sensors

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