The EngyCal RH33 combined heat and cold meter and EngyCal RS33 steam meter enable accurate recording and calculation of energy values as well as billing of the heat/cold quantity. Both meters are used in the support processes of all industries, e. g. the production of heat and cold, steam generation as well as distribution systems for heat, cold and steam, in long-distance heat networks and building automation. EngyCal RH33 was developed especially for applications with liquids, such as water, water glycol mixtures or thermal oils. EngyCal offers high-accuracy measurement, particularly in cooling applications, thanks to electronically paired temperature sensors using Callendar van Dusen coefficients. The temperature difference error is minimised and the replacement of individual sensors is possible in the field. A cost-intensive use of paired sensors is therefore not necessary. The meter is optionally available in custody transfer version. The EngyCal RS33 was developed for saturated steam applications or for applications with superheated steam. It calculates and records energy values for steam applications. The EngyCal meters are easy to integrate in other systems, e. g. via M-Bus, Modbus and Ethernet. In addition, the load curves can be read out and displayed using the FDM software, whereby users have the option to create reports and comparisons.