U20L_使用说明书手册

onsetHOBO U20L Water Level Logger (U20L-0x)ManualHOBO'Data LoggersThe HOBO U20L Water Level Logger is used for monitoring changing water levels in a widerange of applications,including streams,lakes,wetlands,tidal areas,and groundwater.UsingHOBOware Pro,you can easily configure this logger to record absolute pressure andtemperature data.This logger features a ceramic pressure sensor,durable housing,and aprotective end cap for deployment in existing wells or stilling wells.Without cumbersome venttubes or desiccants to maintain,this easy-to-use logger is an ideal solution for water levelstudies and research.SpecificationsPressure (Absolute)and Water Level Measurements U20L-01HOBO Water Level LoggerOperation Range0 to 207 kPa (0 to 30 psia);approximately 0 to9 m (0 to 30 ft)ofwater depth at sea level,or 0 to 12 m(0 to 40 ft)of water atModels:3,000 m (10,000 ft)of altitude.U20L-01(30-foot depth)Factory Calibrated Range69 to 207 kPa(10 to 30 psia),0*to 40*C(32*to 104*F).U20L-02 (100-foot depth)Burst Pressure310 kPa(45 psia)or 18 m(60 ft)depth·U20L-04(13-foot depth】Water Level Accuracy*Typical error:0.1%FS,1.0 cm(0.03 ft)waterRequired Items:Maximum error:0.2%FS,2.0 cm (0.06 ft)water.Coupler (COUPLER2-C)withRaw Pressure Accuracy**0.3%FS,0.62 kPa (0.09 psi)maximum errorUSB Optic Base Station (BASE-Resolution<0.02 kPa (0.003 psi),0.21 cm (0.007 ft)waterU-4)orHOBO Waterproof ShuttlePressure Response Time (90%)***<1 second at a stable temperature;measurement accuracy also(U-DTW-1,firmware versiondepends on temperature response time3.2.0 or later)*Pressure(Absolute)and Water Level Measurements U20L-02.HOBOware Pro,version 3.5or higherOperation Range0 to 400 kPa (0 to 58 psia);approximately 0 to 30.6 m(0 to 100 ft)of water depth at sea level,or 0 to 33.6m (0 to 111 ft)of water atAccessories:3,000 m (10,000 ft)of altitude.Cable (CABLE-1-300 orFactory Calibrated Range69 to 400 kPa (10 to 58 psia),0*to 40*C(32*to 104"F)CABLE-1-50)and Cable Crimp(CABLE-1-CRIMP)Burst Pressure500 kPa (72.5 psia)or 40.8 m (134 ft)depth·Replacement CouplerWater Level Accuracy*Typical error:0.1%FS,3.0 cm (0.1 ft)water(COUPLER2-C)Maximum error:40.2%FS,6.0 cm(0.2 ft)water*If shuttle firmware version 3.2.0 orRaw Pressure Accuracy**0.3%FS,1.20 kPa (0.17 psi)maximum errorlater is needed,see the OnsetResolution<0.04 kPa (0.006 psi),0.41 cm (0.013 ft)waterwebsite or contact Onset TechnicalSupport.Pressure Response Time (90%)***<1 second at a stable temperature;measurement accuracy alsodepends on temperature response timePressure(Absolute)and Water Level Measurements U20L-04Operation Range0 to 145 kPa (0 to 21 psia);approximately 0 to 4 m (0 to 13 ft)ofwater depth at sea level,or 0 to 7m (0 to 23 ft)of water at 3,000m(10,000 ft)of altitudeFactory Calibrated Range69to145kPa(10to21psia,0°to40℃(32to104F)Burst Pressure310 kPa(45 psia)or 18 m(60 ft)depthWater Level Accuracy*Typical error:0.1%FS,0.4 cm (0.013 ft)waterMaximum error:0.2%FS,0.8 cm (0.026 ft)waterRaw Pressure Accuracy**0.3%FS,0.43 kPa