The Contrec 515 HC01 Heat Calculator is designed to measure the volume, mass, and energy content of fluids in heating or cooling systems. It uses frequency volume flow input along with analog temperature inputs for supply and return.
This heat calculator supports various fluid types and modes, making it ideal for many heating and cooling applications. The 515-HC01 is compatible with a wide range of flowmeter frequency outputs, including mV signals, reed switches, Namur proximity switches, and pulse outputs, all easily configured through its user-friendly front-panel programming.
The 515-HC01 calculates mass flow and energy based on the Industrial Formulation (1997) (IAPWS) when the fluid is water. For other industrial fluids, it utilizes internal enthalpy and density tables to ensure accurate measurements.
With the Contrec 515-HC01, you can calculate mass flow and energy for various fluids, including Water, Glycol (35% Solution), Brine (27% CaC2), TYFOXIT F20, TYFOXIT F40, Essotherm 500/Thermaloil, THERMINOL 55, and even custom user-defined fluids.




