ultrasonic water depth meter adopt ultrasonic theory that sonic wave come across barrier then reflect to transducer, according to the time and speed, distance from barrier and transducer can be got. It can detect distance correctly and rapidly when vessel is voyaging. It is usually used in lane survey, under water

　　terrain survey, vessel orientation etc.

　　Specification:

　　Sensing range:50/100m

　　Unusable area:< 0.5/0.8 m

　　Max error:±0.3%, ±1mm

　　Display :ＬＣＤ Key board :5 sensitive key

　　Work temperature:normal work pressure:normal

　　Output :RS232

　　Power:9V AA battery×５or DC 12V

　　Work current:35mA

　　Cable :10m

　　Degree : instrument IP63 sensor:IP68

　　Weight:instrument: 0.3Kg ,sensor: 1.2Kg（power:0.3Kg