2 to 3 weeks

Sensor type KSTH 104

Temperature measurement range -40 ° C to 80 ° C

Temperature measurement accuracy ± 0,5 ° C in the range of 0 ° C to 45 ° C

± 0,7 ° C in the range 65 ° C to 80 ° C

± 1,1 ° C in the range of -40 ° C to 0 ° C

Relative humidity measurement range from 0 to 95%

Relative humidity measurement accuracy ± 3% in the range of 10 to 90%

± 4,5% in the range of 0 to 10% and 90 to 95%

CAN / CANopen output signal - CiA DS 301

Supply voltage U 15 to 30 VDC

Nominal supply voltage Un 24 VDC

Maximum consumption: 500 mW

typical: 250 mW

Protection class IP 30 according to EN 60529

Head dimension 71,9 x 59 x 27 mm

LEXAN head material (conforms to EN 45545-2)

Min weight 35 g

Recommended wire cross section 0,14 to 1 mm2


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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The KSTH 104 temperature and relative humidity sensor is designed to measure the temperature and relative humidity of the air in spaces protected from water. In the segment of rail vehicle applications, it is used to measure both variables in passenger compartments of train units and wagons and is part of the temperature and relative humidity control system.

The KSTH 104 temperature and relative humidity sensor consists of a plastic ribbed head where a printed circuit board with the individual sensors and a converter is placed to establish communication via the CAN bus. The temperature and relative humidity are measured by a common internal sensor, the signal of which is processed in a microprocessor and is converted into a CANopen output signal with the CiA DS 301 specification. The sensors meet the protection index IP 30 according to EN 60529. Appropriate design and high quality materials ensure that the sensor is not annoying, even in interiors with high aesthetic requirements. You can choose the color of the box white or gray.

The KSTH 104 temperature and relative humidity sensor is designed to operate in a chemically non-aggressive environment; its use must be chosen according to the temperature and the chemical resistance of the individual sensors. The operating conditions to establish correct operation are:

- Ambient temperature near the sensor: -40 to 80 ° C

- Ambient relative humidity: 0 to 95% (humidity without condensation)

- Atmospheric pressure: 87 to 106 kPa


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 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. The materials also meet the requirements of the NFPA 130 fire safety standard, as amended.

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