HOBO KIT-S-U20-01 9 Meter Water Level Logger Starter Kit

Features:
Lightning protection - no long signal wires, and electronics are shielded in stainless steel housing
HOBOware Pro software provides easy conversion to accurate water level reading, fully compensated for barometric pressure, temperature, and water density (use barometric pressure data from nearby weather station).
Multiple-rate sampling  allows faster sampling at critical times such as when pumping starts or stops.
Available in 4 depth ranges
Ideal for use in wells, streams, lakes, wetlands and tidal areas
No-vent-tube design for easy reliable deployment
Durable ceramic pressure sensor

Combining high accuracy water level measurements with out-of-the-box convenience, this money-saving kit includes everything needed to start logging right away. It is ideal for monitoring water levels and temperatures in wells, streams, lakes and freshwater wetlands.

Includes:
U20-001-01 HOBO logger (30' range)
BASE-U-4 base station with the required coupler
BHW-PC HOBOware Pro software.

Specifications:
Pressure and Water Level Measurements U20-001-01 and U20-001-01-Ti:
Operation Range: 0 to 207 kPa (0 to 30 psia); approximately 0 to 9 m (0 to 30 ft) of water depth at sea level, or 0 to 12 m (0 to 40 ft) of water at 3,000 m (10,000 ft) of altitude
Factory Calibrated Range:  69 to 207 kPa (10 to 30 psia), 0° to 40°C (32° to 104°F)
Burst Pressure:  310 kPa (45 psia) or 18 m (60 ft) depth
Water Level Accuracy*: Typical error: ±0.05% FS, 0.5 cm (0.015 ft) water. Maximum error: ±0.1% FS, 1.0 cm (0.03 ft) water
Raw Pressure Accuracy**:  ±0.3% FS, 0.62 kPa (0.09 psi) maximum error
Resolution: < 0.02 kPa (0.003 psi), 0.21 cm (0.007 ft) water
Pressure Response Time (90%): < 1 second
Thermal Response Time (90%)***: Approximately 10 minutes in water to achieve full temperature compensation of the pressure sensor
Temperature Measurements (All Models):

Operation Range: -20° to 50°C (-4° to 122°F)
Accuracy: ±0.44°C from 0° to 50°C (±0.79°F from 32° to 122°F), see Plot A
Resolution: 0.10°C at 25°C (0.18°F at 77°F), see Plot A
Response Time (90%):  3.5 minutes in water (typical)
Stability (Drift): 0.1°C (0.18°F) per year

Logger:    
Real-time Clock:  ± 1 minute per month 0° to 50°C (32° to 122°F)
Battery:  2/3 AA, 3.6 Volt lithium, factory-replaceable
Battery Life (Typical Use):  5 years with 1 minute or greater logging interval
Memory (Non-volatile): 64K bytes memory (approx. 21,700 pressure and temperature samples)
Weight: Stainless steel models: approximately 210 g (7.4 oz) Titanium models: approximately 140 g (4.8 oz)
Dimensions: 2.46 cm (0.97 inches) diameter, 15 cm (5.9 inches) length; mounting hole 6.3 mm (0.25 inches) diameter
Wetted Materials:  Stainless Steel models: 316 stainless steel, Viton® o-rings, acetyl cap, ceramic sensor. Titanium models: Titanium, Viton o-rings, acetyl cap, ceramic sensor
Logging Interval:  Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from 1 second to 18 hours. Refer to the HOBOware software manual.
Launch Modes:  Immediate start and delayed start
Offload Modes: Offload while logging; stop and offload
Battery Indication:  Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile.
CE Compliant:  The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).