Product type KNS 500

4 to 20 mA output signal

Standard measuring ranges **)

-30 ° C to 60 ° C

0 ° C to 100 ° C

0 ° C to 150 ° C

0 ° C to 200 ° C

Supply voltage U 12 to 30 VDC

Nominal supply voltage Un 12 VDC

Output signal when the sensor is interrupted> 23 mA

Output signal when the sensor is short-circuited <3,5 mA

Measurement error in dependence

to provide voltage for flow

from 0 to 0,4 m / s

in the range of 0 to 40 ° C

UNS = 12 V: ± (0,5 ° C)

UNS = 24V: (-0,2 to 0,80 ° C)

in the range -30 ° C to 80 ° C

UNS = 12V: ± (0,5 ° C) ± 0,2% of range

UNS = 24V: (-0,2 to 0,80 ° C) ± 0,2% of range

Ambient temperature -40 ° C to 80 ° C

LEXAN head material (conforms to EN 45545-2)

Head dimensions 71,9 x 59 x 27 mm

Protection class IP 30 according to EN 60529

Response time τ0,5 ≤ 8 s (in ambient air at 1 ms-1)

Average service life ≈ MTTF *) 1,2 x 105 h - based on a theoretical calculation

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

**) see modifications


Shock and vibration tests

category 1, class B according to EN 61373

Electromagnetic compatibility according to EN 50121-3-2

Insulation test 1,5 kVDC for 1 minute according to EN 50155

Fire resistance

according to EN 45545 (possible according to NFPA 130)

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Standard or express delivery

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Product details about "TEMPERATURE SENSOR WITH 4-20 mA OUTPUT KNS ​​500"

The KNS 500 temperature sensor is designed to measure the temperature of gaseous substances in areas protected against water. In the application segment of railway vehicles, it is used to measure the temperature in the passenger compartments of train units and wagons and is part of the temperature control system.

The temperature sensor consists of a plastic ribbed head, on which is placed a printed circuit board with a temperature-current converter and a resistance temperature sensor. The sensors can be used for all control systems compatible with the current output from 4 to 20 mA. The standard temperature ranges of the sensor are given in the technical parameters table, while the maximum temperature around the sensor head is 80 ° C. The sensor complies with the protection class IP 30 according to EN 60529. A Appropriate design and high-quality material ensure that the sensors are not disturbing, even in interiors with high aesthetic requirements. You can choose the color of the box white or gray.

The sensor is designed to operate in a chemically 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

- Electromagnetic compatibility according to standard EN 50121-3-2, as amended

- 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. May be supplied with materials that meet NFPA 130 fire safety standard, as amended.


  • Reference GKNS500R

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