Testing device for heat meter

The utility model relates to a heat meter detecting device used for heat metering. The utility model is characterized in that: a flow pipe is communicated between a water inlet pipe and a water outlet pipe; an automatic adjusting valve and a standard flow meter are arranged on the flow pipe; a water pump controlled through a variable frequency and constant pressure controller is also arranged on the water inlet pipe. The utility model has the advantages of being simple in structure, conveniently using, effectively improving detecting range and detecting precision of the heat meter, fully meeting requirements of quantity-transfer system, suiting for regulations suggested by ???heat meter???of No. 75 International Organization of Legal Metrology (OIMLR) of level two and three and tracing the origin to highest national standard (datum).