Three-Hall sampling metering device

The utility model relates to the technical field of metering devices, in particular to a three-Hall sampling metering device which comprises a metering device shell, a discharging pipe is arranged on the right side of the metering device shell, an external pipe is connected to the right side of the discharging pipe, and an installation clamping block and an installation clamping groove matched with the installation clamping block are arranged at the joint of the external pipe and the discharging pipe. And the second-stage connector is connected to the right side of the external pipe, the right side of the second-stage connector is connected with a third-stage connector, and the right side of the third-stage connector is connected with an inner pipe. According to the three-Hall sampling and metering device, the external pipe is detachably connected with the discharge pipe, so that the external pipe can be directly disassembled when the Hall sampling and metering device needs to be disassembled, the joint of th