Heating - Ventilation - Air Conditioning

In times of increasing energy prices the distribution of heating costs is a delicate subject. The basic information is provided by instruments for accurately measuring the temperature on radiators. Pt temperature sensors in thin-film technology from Heraeus Sensor Technology have been used for years in this critical application. In the calorimetric measurement the accurate acquisition of the difference in the quantity of heat is necessary under legal obligations. The pair of sensors used for the billing of heating costs may only differ by 0.1 K from one another. For years state-approved testing stations have been certifying this precision and reliability for the sensors from Heraeus Sensor Technology.

Varying gas quality or calorific values necessitate the automated optimisation of the combustion in the boiler. This can be achieved in that the flame temperature is measured directly as the primary quantity in the combustion chamber of the boiler - a typical application for the Pt temperature sensors in thin-film technology from Heraeus Sensor Technology. Their stable long-term characteristics still supply reliable reproducible measurements after thousands of burner cycles.

In thermal solar collectors a liquid is heated, serving as a transport medium which transports the collected heat to the heat accumulator. But the circulation pump must only come into action when the temperature in the collector has risen above the temperature in the accumulator by a minimum amount. This is traditionally decided by a rugged Pt temperature sensor having long-term stability and a nominal resistance of 1000 ohm. Of course the classical advantages of Pt sensors are the real motive for this deployment: Reliable, standardised characteristic and an easily evaluated measurement signal.

The markets for heating, ventilation and air conditioning technology are on one hand under massive pressure of costs, but on the other hand one hundred percent availability of the system is always expected. Both are good reasons to employ Pt temperature sensors from Heraeus Sensor Technology in these fields of application. The sensors are developed for the respective application together with the customers and are produced in closely managed production processes, optimised for costs.