Hobo MX Series Manual

Hobo MX Series Manual

Water level logger
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HOBO® MX Water Level Logger (MX2001-0x) Manual
HOBO MX Water Level
Logger
Models:
• MX2001-01-SS or MX2001-01-Ti
(Titanium), 9-meter/30-foot
depth)
• MX2001-02-SS, 30-meter/100-
foot depth
• MX2001-03-SS, 76-meter/250-
foot depth
• MX2001-04-SS or MX2001-04-
Ti (Titanium), 4-meter/13-foot
depth
Note: Each model consists of a
sensor end (MX2001-0x-SS-S or
MX2001-0x-Ti-S) and a top end
(MX2001-TOP).
Included Items:
• Two AA 1.5 V Batteries
• Grease packet
• Logger consisting of a top end
and sensor end connected by a
cable in desired length (ordered
separately)
Required Items:
• HOBOconnect app
• Mobile device with Bluetooth
and iOS, iPadOS®, or Android™
• Cable (CABLE-DR-xxx)
Accessory:
• Well cap (WELL-CAP-01)
19389-O
The HOBO MX water level logger is used for monitoring changing water levels in a wide
range of applications, including streams, lakes, wetlands, tidal areas, and groundwater.
This Bluetooth® Low Energy-enabled logger is designed for wireless communication with
a mobile device. Using the HOBOconnect® app, you can easily configure the logger and
read it out—all from its deployed location—to your phone or tablet where you can view
the logged data or share it for further analysis. With the app, you can also set a
reference water level and water density, configure up to 8 logging intervals, log
statistics, configure an alarm to trip at thresholds you specify, or set up burst logging in
which data is logged at a different interval when sensor readings are above or below
certain limits. This logger features a ceramic pressure sensor, durable housing, and an
integrated barometric pressure sensor for barometric compensation in the logger,
which allows for direct water level readout without needing to do any post processing.
An optional cap is also available for deployment in existing wells or stilling wells.
Without cumbersome vent tubes or desiccants to maintain and convenient data
retrieval to a phone or tablet, this easy-to-use logger is an ideal solution for water level
studies and research.
Specifications
Pressure (Absolute) and Water Level Measurements MX2001-01-SS-S and MX2001-01-Ti-S
Operation Range
Factory Calibrated Range
Burst Pressure
Water Level Accuracy*
Raw Pressure Accuracy**
Resolution
Pressure Response Time (90%)***
Pressure (Absolute) and Water Level Measurements MX2001-02-SS-S
Operation Range
Factory Calibrated Range
Burst Pressure
Water Level Accuracy*
Raw Pressure Accuracy**
Resolution
Pressure Response Time (90%)***
Pressure (Absolute) and Water Level Measurements MX2001-03-SS-S
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: ±0.05% FS, 0.5 cm (0.015 ft) water
Maximum error: ±0.1% FS, 1.0 cm (0.03 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
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: ±0.05% FS, 1.5 cm (0.05 ft) water
Maximum error: ±0.1% FS, 3.0 cm (0.1 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
0 to 850 kPa (0 to 123.3 psia); approximately 0 to 76.5 m (0 to
251 ft) of water depth at sea level, or 0 to 79.5 m (0 to 262 ft)
of water at 3,000 m (10,000 ft) of altitude
69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F)
1,200 kPa (174 psia) or 112 m (368 ft) depth
Typical error: ±0.05% FS, 3.8 cm (0.125 ft) water
Maximum error: ±0.1% FS, 7.6 cm (0.25 ft) water
±0.3% FS, 2.55 kPa (0.37 psi) maximum error
<0.085 kPa (0.012 psi), 0.87 cm (0.028 ft) water
<1 second at a stable temperature

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Summary of Contents for Hobo MX Series

  • Page 1 HOBO® MX Water Level Logger (MX2001-0x) Manual The HOBO MX water level logger is used for monitoring changing water levels in a wide range of applications, including streams, lakes, wetlands, tidal areas, and groundwater. This Bluetooth® Low Energy-enabled logger is designed for wireless communication with a mobile device.
  • Page 2 HOBO MX Water Level Logger (MX2001-0x) Manual Specifications (continued) Pressure (Absolute) and Water Level Measurements MX2001-04-SS-S and MX2001-04-Ti-S Operation Range 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)
  • Page 3 HOBO MX Water Level Logger (MX2001-0x) Manual Specifications (continued) Top end (MX2001-TOP): Approximately 136 g (4.78 oz) in air Weight Stainless sensor end (MX2001-0x-SS-S): Approximately 141.4 g (4.99 oz) in air; approximately 93.4 g (3.3 oz) in fresh water Titanium sensor end (MX2001-0x-Ti-S): Approximately 80 g (2.83 oz) in air; approximately 37 g (1.3 oz) in fresh...
  • Page 4: Factory Calibration

    HOBO MX Water Level Logger (MX2001-0x) Manual 6. Deploy the logger if ready. If you are ready to deploy the when the logger is configured to start on a specific date/time or on the next logging interval. The LED will also...
  • Page 5 HOBO MX Water Level Logger (MX2001-0x) Manual Logger Logger Setting Action Setting Action standard deviation) and set the statistics Logging Tap Logging Intervals and select how often the sampling interval. Statistics are not available for Intervals logger will record data. When selecting a logging water level and barometric pressure data.
  • Page 6 HOBO MX Water Level Logger (MX2001-0x) Manual • There is a vent for the barometric sensor at the top of Update the firmware on the logger. A logger > the logger (in the top end). This vent must not collect...
  • Page 7: Setting Up Alarms

    HOBO MX Water Level Logger (MX2001-0x) Manual 4. Use the Onset well cap if it is a 5 cm (2 inch) well. • If the water level surface is above the reference point as Otherwise, use a 1/4-inch bolt of sufficient length to span shown below, enter the reference water level in the app the well top or washer.
  • Page 8 HOBO MX Water Level Logger (MX2001-0x) Manual 5. Select Low if you want an alarm to trip when the sensor temperature remains between 85°F and 32°F. Once the water reading falls below the low alarm value. Drag the slider or temperature rises above 85°F, the logger will switch to the...
  • Page 9 HOBO MX Water Level Logger (MX2001-0x) Manual • Once the high or low condition clears, the logging Important: You must select Normal if you want to log water interval time will be calculated using the last recorded level and barometric pressure data. If you deselect Normal, the...
  • Page 10 To reset a password, press the reset button on the logger units. located between the two batteries in the top end as shown 5. Tap Save to apply these new settings to the HOBO file and below or connect to the logger and tap , then , and tap graph.
  • Page 11: Maintenance

    HOBO MX Water Level Logger (MX2001-0x) Manual Maintenance Verifying Accuracy The logger requires the following periodic maintenance to You can check the differential accuracy of the logger for water ensure optimal operation: level measurements by deploying the logger’s sensor end at two depths and comparing the difference in level readings in •...
  • Page 12 To comply with FCC and Industry Canada RF radiation exposure limits for general population, the HOBO MX logger must be installed to provide a separation distance of at least 20cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.

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