The Temperature measurement has been since the founding of Jumo a core area of ​​the company. The comprehensive know-how is reflected in the wide range of products. Among the large number of temperature sensors and probes such as resistance thermometers and thermocouples, there are also thermostats, temperature transmitters and wireless temperature measuring device solutions. The diverse industrial applications range from the chassis in railway technology, to sophisticated high-temperature measurements in Ofenbau to room temperature measurement in the Technical Building Services.

Jumo air conditioning train

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Temperature monitoring of critical railway components

15.10.2024/XNUMX/XNUMX | the railway engineering zählt schon lange zu den Fokusbranchen von Jumo. Deswegen sind viele Systeme und Lösungen für Messungen speziell in diesem Anwendungsbereich konzipiert. Temperatur Messgeräte, Füllstandsmesser, pressure sensors u. a. müssen den anspruchsvollen Bedingungen auf Schienen standhalten. EN 50155-konform arbeiten sie selbst bei Vibrationen, großen Temperatur-Schwankungen und elektromagnetischen Einflüssen zuverlässig und präzise.

The Jumo portfolio covers a wide range of measured variables. “Our sensors for measuring temperature, humidity, level and pressure make a significant contribution to increasing safety, efficiency and reliability in rail transport,” says Lars Ronge, Industry Manager Transportation at Jumo.

The temperature measuring devices and sensors continuously monitor the temperature critical components Who Engines, Brakes and axle bearings. By detecting overheating at an early stage, maintenance measures can be initiated in good time and unplanned downtimes can be avoided.

This results in a longer service life of the components and greater operational reliability. At Innotrans 2024, for example, the company presented the Jumo Railtemp, a new generation of wheelset sensors, was introduced.

Electronic thermostats for the rail

Jumo thermostat27.05.2024 | The electronic thermostat for DIN rail mounting Jumo Etron T100 was developed specifically for the measurement task of temperature control and monitoring. It can optionally be used for the thermostatic function for more demanding control processes. In the version as a PID two-point controller with self-optimization, it delivers a significantly higher control quality.

The compact design of the thermostat offers a wide range of functionsTimers, data loggers, service and operating hour counters, a photo MOS output for additional limit signaling and a digital input are integrated. Logical links (AND, OR, XOR) can be created and processed internally using digital control signals.

In addition to the input signals for Thermocouples and resistance thermometers, there is also a measuring input 0(4) to 20 mA for connecting additional process variables. In addition to the UL approval The device also meets the standards for the railway industry of category 1B. The manufacturer has integrated relevant measuring inputs, such as Ni 1000, specifically for the requirements of this industry.

To display the measured values, parameters, switching states or the electrical connection plan, the innovative thermostat has Jumo Etron T100 via a configurable dot matrix display. The device already has four languages ​​available for the clearly structured operating concept, which is supported by additional texts.

Also a practical Instantwiring Vibration-resistant push-in terminals enable quick and easy commissioning. Alternatively, the thermostat can also be configured using a setup program and the standard micro-USB interface.

Humidity, CO2 and temperature transmitters with SPE technology

Jumo SPE small16.02.2023 | Jumo integrates SPE technology into three new sensor products: humidity, CO2 and temperature measurement transmitter Jumo Hydrotrans, the flow transmitter Jumo flow Trans MAG H20 and the pressure transmitter Jumo Delos S02. With the SPE option you get complete system solutions with continuous Ethernet transmission.

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Humidity and temperature transmitter controls climate in the train

Jumo temperature transmitter10.12.2022 | Jumo offers a comprehensive portfolio of measurement and control technology for the railway industry. In addition to measuring the temperature in the chassis area and in the water supply, the temperature and humidity control in the passenger compartment is of particular importance.

Air conditioning systems in trains lower temperatures in summer and dehumidify the air inside the train when outside temperatures are low. Also because of the extremely hot summers in Europe in recent years, the demand for solutions for this is increasing, as Innotrans 2022 showed. Jumo can help with the Hydrotrans temperature transmitter Model series. This includes reliable humidity and temperature transmitters with an optional CO2 Module. The temperature transmitters are available with different interfaces. They are robust, easy to install and have a reliable connection sensors.

The Hydrotrans has the necessary railway approval DIN EN 50155. and is therefore ideal for climate monitoring in rail traffic. It is available in two versions: as a channel version and as a rod version. The measuring range is 0 to 100% RH with an accuracy of 2% RH, the temperature range is between -40° and +80 °C.

CO2 Module for optimal air in the train

For the exact determination of air quality indoors there is an optional CO2 Module that has a measuring range of up to 10.000 ppm. By placing the module in the sensor head, very short response times can be achieved. Voltage output, current output and Modbus are available as interfaces.


Infrared thermometer with smartphone & tablet app


With the CO2 Air quality monitoring module can also add a significant Climate efficiency implement, which saves the operator heating costs and reduces maintenance costs, especially in times of electricity price increases. Jumo ensures the quality assurance of moisture-sensitive products, so that users benefit from low maintenance and long-lasting products. The filter cap can also be easily changed.

In order for the air conditioning system to be able to regulate the temperatures in the train, the temperature measurement and temperature control must be reliable and constant. The temperature sensors and thermostats exposed to the movements must therefore be robust and resistant to vibration. The transmitter from Jumo meets all of these requirements. With Degree of protection IP20 and IP65 but it is also suitable for other areas of application. In addition to railway technology, these are the building automation as well as use in factories and warehouses.

Diverse temperature measurement with IO-Link at just one measuring point

23.05.2019 | The “Dicotemp 100” is a smart fitting from Jumo that can be used to carry out diverse temperature measurements with a thermostat or dial thermometer and a platinum chip temperature sensor at just one measuring point. transmitters The resistance signal is converted into an analog or digital signal.

With the new solution, users can continue to use devices that are already installed in the process at the same measuring point and at the same time have an electrical one Temperature measurement expand. The combination of a platinum chiptemperature sensors with a thermostat or dial thermometer in a fitting significantly reduces the planning and installation effort. 

The fitting consists of Stainless Steel and is available in different connection types: for screwing in or for plugging into a smooth pipe. The installation length varies between 65 and 300 mm depending on customer requirements. The thermal system can be used at process temperatures between -40° and +260°C.

Via an industry standard M12 connector becomes a Resistance signal transmitted. Using cablemeasuring transducer Additional output signals can be forwarded analogue (4 to 20 mA) or digital (IO-Link), which guarantees flexible data use. A variety of variants arises from the use of different device types, platinum sensors and sensor and immersion sleeve diameters.

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Author information
Lars Ronge

The author Lars Ronge is the Railway Industry Manager at Jumo in Fulda.