onsetcomp com41 onsetcomp com Low price high accuracy Key Advantages Self contained non vented design enables easy deployment Ideal for use in both fresh and salt water environments Durable ceramic pressure sensor Ideal for use in wells streams lakes wetlands and tidal areas The HOBO U20L series loggers are low cost research grade water level data loggers for continuously measuring water level and temperature in a wide range of underwater environments They feature 0 1 measurement accuracy a polypropylene housing for use in both fresh and salt water and a non vented design for convenient and hassle free deployment Supported Measurements Water Level Barometric Pressure Pressure Absolute Temperature For complete information and accessories please visit www onsetcomp com Part number U20L 04 U20L 01 U20L 02 HOBO Water Level Specifications Range 0 4 m 0 13 ft 0 to 145 kPa 0 to 21 psia 0 9 m 0 30 ft 0 to 207 kPa 0 to 30 psia 0 30 6 m 0 100 ft 0 to 400 kPa 0 to 58 psia Factory Calibrated Range 0 to 40 C 32 to 104 F 69 to 145 kPa 10 to 21 psia 69 to 207 kPa 10 30 psia 69 to 400 kPa 10 to 58 psia Water Level Accuracy Typical Error 0 4 cm 0 013 ft 0 1 FS 1 0 cm 0 03 ft 0 1 FS 3 0 cm 0 1 ft 0 1 FS Resolution 0 14 cm 0 005 ft water 0 21 cm 0 007 ft water 0 41 cm 0 013 ft water Burst Pressure 310 kPa 45 psia 18 m 60 ft depth 310 kPa 45 psia 18 m 60 ft depth 500 kPa 72 5 psia 40 8 m 134 ft depth Temperature Specifications all models Range 20 to 50 C 4 to 122 F Accuracy 0 37 20 C 0 67 68 F 0 44 from 0 to 50 C 0 79 from 32 to 122 F Resolution 10 bit 0 1 20 C 0 18 68 F Response time 10 minutes to 90 in water Dimensions 3 18 cm diameter x 15 24 cm 1 25 x 6 0 in hole in mounting bail 6 3 mm 0 25 in CE compliant Yes HOBO Base Station or HOBO Waterproof Shuttle required See page 56 for more details 1Coupler included with HOBO Base Station or HOBO Waterproof Shuttle HOBO U20L Series Water Level Loggers Minimum System Requirements Coupler1Base Station See pg 56 Software See pg 45

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