Starting at $1,401.84
  • Usually ships in 1-2 weeks



  • Transparent energy consumption
  • Remote readout via Ethernet and fieldbuses
  • Counters
  • Fault mode / deficit counter
  • User-defined heat transfer media
  • Verified and certified reliability and accuracy
  • Data logging and logbook


The E+H EngyCal RH33 BTU Meter is used in applications with liquid energy carriers. The RH33 calculates the thermal energy of water acc. to EN1434, glycol/water mixtures or other fluids such as thermal oils. Temperature sensor matching using calibrated temperature sensors is done in the device. Potential for cost savings can be shown by using the software available as an accessory. The device has a custody transfer approval and allows bi-directional measurement, e.g. charging/discharging of a heat accumulator.

Applications for the RH33 include:

  • Heating circuits
  • Cooling circuits
  • Combined heating and cooling circuits
  • Long-distance heat networks
  • Building automation