RH33-AA2A+AAD2E2P2 E+H Energy Meter EngyCal RH33 BTU Meter Product Overview The EngyCal RH33 BTU Meter is designed for precise recording and billing of heat and cold quantities in various circuit applications, providing reliable energy measurement solutions for industrial and commercial use. Applications Heating circuits Cooling circuits Combined heating and cooling circuits Typical application areas include industrial processes, long-distance heat networks, and building