Jeroen Smits
Manager Product- en Sector Specialists
The HOBO MX20L Water Level Logger is an advanced measurement instrument for monitoring water levels and temperatures in various underwater environments.
Enhanced Functionality
Measurement Range and Accuracy
Robust Design
Ease of Use
Data Processing
The MX20L offers a comprehensive solution for accurate and continuous water level monitoring across a wide range of applications, including lakes, rivers, wetlands, and tidal areas.
Technical specifications
Pressure (Absolute) and Water Level Measurements
MX20L-01
Operating Range:
0 to 207 kPa (0 to 30 psia); approximately 0 to 9 m (0 to 30 ft) water depth at sea level, or 0 to 12 m (0 to 40 ft) at 3,000 m (10,000 ft) 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: ±0.1% FS, 1.0 cm (0.03 ft) water.
Maximum Error: ±0.2% FS, 2.0 cm (0.06 ft) water.
Raw Pressure Accuracy:
±0.3% FS, 0.62 kPa (0.09 psi) maximum error.
Resolution:
<0.02 kPa water, 0.007 ft water.
Response Time (90%):
<1 second at stable temperature.
MX20L-02
Operating Range:
0 to 400 kPa (0 to 58 psia); approximately 0 to 30.6 m (0 to 100 ft) water depth at sea level, or 0 to 33.6 m (0 to 111 ft) at 3,000 m (10,000 ft) altitude.
Factory-Calibrated Range:
69 to 400 kPa (10 to 58 psia), 0° to 40°C (32° to 104°F).
Burst Pressure:
500 kPa (72.5 psia) or 40.8 m (134 ft) depth.
Water Level Accuracy:
Typical Error: ±0.1% FS, 3.0 cm (0.1 ft) water.
Maximum Error: ±0.2% FS, 6.0 cm (0.2 ft) water.
Raw Pressure Accuracy:
±0.3% FS, 1.20 kPa (0.17 psi) maximum error.
Resolution:
<0.04 kPa (0.006 psi), 0.41 cm (0.013 ft) water.
MX20L-04
Operating Range:
0 to 145 kPa (0 to 21 psia); approximately 0 to 4 m (0 to 13 ft) water depth at sea level, or 0 to 7 m (0 to 23 ft) at 3,000 m (10,000 ft) altitude.
Factory-Calibrated Range:
69 to 145 kPa (10 to 21 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: ±0.1% FS, 0.4 cm (0.013 ft) water.
Maximum Error: ±0.2% FS, 0.8 cm (0.026 ft) water.
Raw Pressure Accuracy:
±0.3% FS, 0.43 kPa (0.063 psi) maximum error.
Resolution:
<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water.
Temperature Measurements (All Models)
Operating Range:
-20° to 50°C (-4° to 122°F).
Accuracy:
±0.2°C (±0.36°F) from 0° to 50°C (32° to 122°F).
Resolution:
0.10°C (0.18°F) at 25°C (77°F).
Response Time (90%):
10 minutes in water (typical).
Stability (Drift):
0.1°C (0.18°F) per year.
Logger Specifications
Wireless Standard:
Bluetooth 5 LE.
Range:
Approximately 30.5 m (100 ft) line-of-sight.
Battery:
Type: 2/3 AA, 3.6 Volt lithium, factory replaceable.
Life:
3 years with 1-minute logging, Bluetooth always on.
7 years with 1-minute logging, Bluetooth and LED off.
10 years with 5-minute logging, Bluetooth and LED off.
Memory:
Non-volatile, approximately 400,000 sets of pressure and temperature readings.
Data Download Time:
Full memory: ~3.5 minutes with Bluetooth 5+.
1,000,000 measurements in <1 minute.
Physical and Environmental
Dimensions:
Diameter: 3.18 cm (1.25 inch); Length: 15.24 cm (6.0 inch).
Mounting Hole Diameter: 6.3 mm (0.25 inch).
Weight:
154 g (5.43 oz) in air; 53.9 g (1.9 oz) in freshwater.
Materials:
Polypropylene housing, Viton and Buna-N O-rings, ceramic sensor in acetal end cap, stainless steel screws suitable for saltwater.
Environmental Rating:
IP68.
Logging Modes
Fixed interval, burst, or multiple intervals with up to 8 user-defined intervals.
Logging intervals: 1 second to 18 hours.
Start and Stop Modes
Start Modes:
Immediate, next interval, date & time, button start (via fob or app).
Stop Modes:
Full memory, never stop (overwrite oldest data), date & time, or after a set logging period.
Pause:
Pause and resume with the HOBOconnect app.
Alarms
Logs high- or low-alarm events.
Alarm status visible in the HOBOconnect app.
The HOBO MX20L series provides highly accurate and reliable water level and temperature monitoring for a wide range of environmental and industrial applications.
Any questions or would you like to receive a quote? Let us know by filling out the form below and our sales team will get in touch.
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