Thermal meter checking apparatus

The utility model relates to a thermal meter checking apparatus, which comprises a control cabinet, a hot water adding tank, a circulation water pump, a pressure stabilization tank, a circulating pipe, a set of mutually rotor flow meters which are connected in series, a standard flow meter, a set of verified thermal meters, two super aqueous thermostats on an aqueous thermostat bench and a computer monitor system. The thermal meter checking apparatus can directly calibrate and check the calorimeter so that the goal of whole meter checking, and the blank of whole meter checking of the national calorimeter is filled. The utility model can simultaneously check one calorimeter to five calorimeters. The flow capacity of the thermal meter checking apparatus is between 12L/h-4000L/h, and the water temperature is between 5 DEG-95 DEG, and can be adjusted. The aperture of the thermal meter checking apparatus is DN15, DN20, DN25 respectively, and the maximum pressure of the thermal meter checking apparatus is 20 bar.