The Caloris series thermostatic bath integrates heating and cooling functions. The water bath body is made of all stainless steel material and undergoes foaming treatment to achieve thermal insulation. This constant temperature bath provides an economically feasible solution for conducting constant temperature tests by directly placing samples in a water bath. At the same time, it is equipped with a circulation pump with strong pressure suction, which can meet the demand of transporting the heat transfer medium to external loads to achieve constant temperature. Its circulation interface adopts M16 * 1 international universal thread connection mode, which has the advantages of simple and fast installation, good sealing, high reliability, strong anti-aging ability and long service life.