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KTR 141A/R and KTR 141E/R CONTACT TEMPERATURE SENSOR ALUMINIUM ALLOY OR STEEL

The KTR 141A/R a KTR 141E/R resistance temperature sensors are designed to measure surface temperature of solid substances with a smooth surface. In the application segment of Railway Vehicles, the sensors are intended for example to measure surface temperature of baseboards of converters and coolers of performance elements and backup battery sources of electric locomotives.

The temperature range is -40 °C to 120 °C and these limits must not be exceeded even for a brief period. The sensor can be used for any control systems compatible with types of sensing elements listed in the table of technical parameters. The sensor meets ingress protection IP 65 according to EN 60529 standard, as amended.

The sensor is intended for operation in chemically non-aggressive environment.

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Sensor type KTR 141A/R KTR 141E/R
-Type of sensing element all types
-Temperature range -40 °C to 120 °C (the measuring range can be extended – see the modifications)
-Ingress protection IP 65 in accordance with EN 60529

Case dimensions 40 x 12 x 8 mm
-The diameter of the hole for attachment 4.1 mm
– Case material stainless steel DIN 1.4301 ( KTR 141A/R ) aluminium alloy 424441.6 ( KTR 141E/R )

Lead-in cable RADOX shielded 2 x 0.5 mm2
-RADOX shielded 4 x 0.5 mm2
-Wire resistance 0.07 Ω for 1 m of cable for 2-wire connection

Time response τ0.5 < 10 s (in flowing water at 0.4 ms-1)

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

Shock and vibration tests category 2 in accordance with EN 61373

Insulation test 4 kVDC for time 1 minute in accordance with EN 50155

Mean working life ≈ MTTF * 1.95 x 106 hrs

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

Insulation test in accordance with EN 50155, as amended
Shock and vibration tests in accordance with EN 61373, as amended

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

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