Functional features: This series of instruments are designed and manufactured in accordance with the national standard GB/ t11828.1-2002. The instrument has good measuring accuracy and working stability under the environment of high water level variability and serious wave surge, and is especially suitable for the use of hydrological station, reservoir station, gate and dam station, remote sensing station and hydropower station. This series instrument from absolute encoding type water level sensor, display, sensor bracket, float, cable, balance weight, RS485 communication interface and other components, is independent of the water level observation measurement instruments, and with the opening of the gate is electric monitor, instrument, gate hoist control system, composed of computer integrated display and control system (such as locks, hydropower station, pumped storage power station, agriculture irrigation systems, water supply and drainage system, etc.); The water level meter equipped with RS485 communication interface can be directly connected with the communication machine and computer to form the hydrological automatic measurement and reporting system and the water situation satellite telemetry system. Instruments equipped with memory recording units can be widely used in hydrographic stations. This series of instruments is suitable for fine Wells and general well logging with inner diameter of 20 cm to 30 cm. Operating environment: Derive the environment temperature: 25 ℃ ~ 85 ℃ After the relative humidity;< 90% (40 ℃) Size: 132 x 132 x 115mm Power supply voltage: 12 ~ 24VDC Basic parameters: Measuring range: 0-20 meters; Water level variation: < 100 cm/min Resolution: 1cm Startup torque of water level wheel: < 100g • cm (0.0098N•m) Measurement accuracy: no more than or equal to + 2cm or 0.2%F•S Display: decimal mechanical counters Mechanical parameters: Working circumference of water level wheel: 32cm Cardiac measurement cable: Φ 1 mm stainless steel spring Float diameter: 10, 15cm optional Electric parameters: Gray code output: 10-13 bits Cardiac output form: contact on-off output contact resistance: 0.5 or less Ω; Insulation resistance: 10 m or more Ω Communication interface (optional) : RS485 interface: MODBUS protocol or other 4 ~ 20mA analog signal output
