自记水位计 meaning in Chinese

automatic gage
automatic stage recorder
automatic water gage
automatic water stage recorder
hydrograph
limnigraph
liquid level recorder
mareograph
recording gage
recording gauge
recording water gage
recording water gauge
recording water-gauge
self recording level meter
self-recording tide gage
self-recording water level gage
self-registering gage
self-registering gauge
stage-recorder
water level recorder
water-stage recorder
waterlevelrecorder
waterstagerecorder