Downstream water level measuring device of Parshall groove open channel flowmeter

The utility model discloses a downstream water level measuring device for a Parshall groove open channel flowmeter, relates to the technical field of water level measuring equipment, and mainly aims to provide the downstream water level measuring device for the Parshall groove open channel flowmeter, which can quickly and accurately determine a downstream water level measuring position and can improve the measuring accuracy. According to the main technical scheme, the downstream water level measuring device of the Parshall groove open channel flowmeter comprises a supporting part, a level gauge, a water level sensor and a water level sensor, wherein the level gauge is arranged at the top of a supporting rod; the longitudinal moving part is arranged outside the supporting rod in a sleeving mode, the transverse moving part comprises a moving plate and a moving block assembly, the moving plate is provided with a moving track, and the moving block assembly is arranged on the moving track; the measuring part compr