Hobo MX20L User Manual

HOBO® MX20L Water Level Logger User Guide
HOBO Water Level
Logger
Models:
• MX20L-01 (30-foot depth)
• MX20L-02 (100-foot
depth)
• MX20L-04 (13-foot depth)
Required Items:
• HOBOconnect app
• Mobile device with
Bluetooth and iOS, or
Android™, or a Windows
computer with Bluetooth
Included Items
• Magnetic activation fob
Accessories:
• Cable (CABLE-1-300 or
CABLE-1-50) and Cable
Crimp (CABLE-1-CRIMP)
• Replacement Coupler
(COUPLER2-C)
• Well Cap (WELL-CAP-01)
29140-A
The HOBO MX20L Water Level Logger monitors changing water levels in a wide range of
settings, including streams, lakes, wetlands, tidal areas, and groundwater. Using HOBOconnect®
on a mobile or Windows device, you can easily configure this logger to record absolute pressure
and temperature data in addition to water level. This logger features a ceramic pressure sensor,
durable housing, and a protective end cap for deploying in existing wells or stilling wells.
Without cumbersome vent tubes or desiccants to maintain, this easy-to-use logger is an ideal
solution for water level studies and research.
Important: In normal operation (when not waking the logger), keep the magnetic fob a
minimum of 1" away from the logger so that you do not inadvertently drain the logger's
battery.
Specifications
Pressure (Absolute) and Water Level Measurements MX20L-01
Operating Range
Factory Calibrated Range
Burst Pressure
Water Level Accuracy*
Raw Pressure Accuracy**
Resolution
Pressure Response Time (90%)***
Pressure (Absolute) and Water Level Measurements MX20L-02
Operating Range
Factory Calibrated Range
Burst Pressure
Water Level Accuracy*
Raw Pressure Accuracy**
Resolution
Pressure Response Time (90%)***
Pressure (Absolute) and Water Level Measurements MX20L-04
Operation Range
Factory Calibrated Range
Burst Pressure
Water Level Accuracy*
Raw Pressure Accuracy**
Resolution
Pressure Response Time (90%)***
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
69 to 207 kPa (10 to 30 psia), 0° to 40°C (32° to 104°F)
310 kPa (45 psia) or 18 m (60 ft) depth
Typical error: ±0.1% FS, 1.0 cm (0.03 ft) water
Maximum error: ±0.2% FS, 2.0 cm (0.06 ft) water
±0.3% FS, 0.62 kPa (0.09 psi) maximum error
<0.02 kPa (0.003 psi), 0.21 cm (0.007 ft) water
<1 second at a stable temperature; measurement accuracy
also depends on temperature response time
0 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 33.6 m (0 to 111 ft) of
water at 3,000 m (10,000 ft) of altitude
69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F)
500 kPa (72.5 psia) or 40.8 m (134 ft) depth
Typical error: ±0.1% FS, 3.0 cm (0.1 ft) water
Maximum error: ±0.2% FS, 6.0 cm (0.2 ft) water
±0.3% FS, 1.20 kPa (0.17 psi) maximum error
<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water
<1 second at a stable temperature; measurement accuracy
also depends on temperature response time
0 to 145 kPa (0 to 21 psia); approximately 0 to 4 m (0 to 13 ft) of
water depth at sea level, or 0 to 7 m (0 to 23 ft) of water at 3,000
m (10,000 ft) of altitude
69 to 145 kPa (10 to 21 psia), 0° to 40°C (32° to 104°F)
310 kPa (45 psia) or 18 m (60 ft) depth
Typical error: ±0.1% FS, 0.4 cm (0.013 ft) water
Maximum error: ±0.2% FS, 0.8 cm (0.026 ft) water
±0.3% FS, 0.43 kPa (0.063 psi) maximum error
<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water
<1 second at a stable temperature; measurement accuracy
also depends on temperature response time