Testing device

The utility model belongs to the technical field of drilling fluid performance testing, and discloses a testing device, which is used for detecting demulsification voltage of drilling fluid and comprises a box body, a pressure sensor, a pressure sensor and a pressure sensor. The sample testing cup is arranged in the box body and used for containing drilling fluid, and an interlayer is arranged on the side wall of a cup body of the sample testing cup; the heating piece is arranged in the interlayer and is used for heating the drilling fluid in the sample measuring cup; and the power supply module is arranged on the sample testing cup and is electrically connected with the heating piece. Therefore, in the demulsification voltage detection process, a heating device does not need to be independently arranged on the outer side of the sample detection cup, and the heating piece of the sample detection cup is used for directly heating, so that the heating effect and the heat preservation effect are enhanced, the tim