MX2001 Bluetooth Water Level Data Logger

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  • Wireless data offload to mobile devices using Bluetooth Low Energy
  • Direct read cable (required) connects sensor to top-end logger/transmitter
  • Integrated barometric pressure sensor enables direct water level readout
  • Reference water level can be entered at the start of the deployment
  • Use HOBOmobile on iOS devices for setup, data viewing and data sharing
  • Powered by two user-replaceable AA batteries in the top-end unit
  • Several logging modes: normal, multi-rate logging and burst-logging
  • Durable ceramic sensor
  • Available with stainless steel or titanium sensor ends
SKU: MX2001 Categories: , , , ,

Description

The Onset HOBO MX2001 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 HOBOmobile® 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 HOBOmobile, 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.

The MX2001 data logger operates in outdoor and underwater environments and supports the following measurements: Absolute Pressure, Barometric Pressure, Differential Pressure, Water Level and Water Temperature.

This product requires the HOBOmobile app (available on iTunes) and a Direct Read Cable.

Specifications

Pressure (Absolute) and Water Level Measurements MX2001-01-S and MX2001-01-Ti-S – 9 Meter (30′) range
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
Pressure Response Time (90%)*** 1 second at a stable temperature
Pressure (Absolute) and Water Level Measurements MX2001-02-S – 30 Meter (100′) range
Operation Range 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
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: ±0.05% FS, 1.5 cm (0.05 ft) water
Maximum error: ±0.1% FS, 3.0 cm (0.1 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
Pressure Response Time (90%)*** 1 second at a stable temperature
Pressure (Absolute) and Water Level Measurements MX2001-03-S – 76 Meter (250′) range
Operation Range 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
Factory Calibrated Range 69 to 850 kPa (10 to 123.3 psia), 0° to 40°C (32° to 104°F)
Burst Pressure 1,200 kPa (174 psia) or 112 m (368 ft) depth
Water Level Accuracy* Typical error: ±0.05% FS, 3.8 cm (0.125 ft) water
Maximum error: ±0.1% FS, 7.6 cm (0.25 ft) water
Raw Pressure Accuracy** ±0.3% FS, 2.55 kPa (0.37 psi) maximum error
Resolution
Pressure Response Time (90%)*** 1 second at a stable temperature
Pressure (Absolute) and Water Level Measurements MX2001-04-S and MX2001-04-Ti-S – 4 Meter (13′) range
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) of water at 3,000 m (10,000 ft) of 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: ±0.075% FS, 0.3 cm (0.01 ft) water
Maximum error: ±0.15% FS, 0.6 cm (0.02 ft) water
Raw Pressure Accuracy** ±0.3% FS, 0.43 kPa (0.063 psi) maximum error
Resolution
Pressure Response Time (90%)***
Barometric Pressure (MX2001-TOP)
Operation and Calibrated Range 66 to 107 kPa (9.57 to 15.52 psia); -20° to 50°C (-4° to 122°F)
Accuracy ±0.2 kPa (±0.029 psi) over full temperature range at fixed pressure; maximum error ±0.5% FS
Water Level Accuracy* Typical error: ±0.075% FS, 0.3 cm (0.01 ft) water
Maximum error: ±0.15% FS, 0.6 cm (0.02 ft) water
Resolution 0.01 kPa (0.0015 psi)
Response Time 1 second at stable temperature
Stability (Drift) 0.01 kPa (0.0015 psi) per year
Temperature Measurements (All Sensor End Models MX2001-0x-S and MX2001-0x-Ti-S)
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 0.1°C at 25°C (0.18°F at 77°F), see Plot A in manual
Response Time (90%) 5 minutes in water (typical)
Stability (Drift) 0.1°C (0.18°F) per year
Logger
Operation Range -20° to 50°C (-4° to 122°F)
Radio Power 1 mW (0 dBm)
Transmission Range Approximately 30.5 m (100 ft) line-of-sight
Wireless Data Standard Bluetooth Low Energy (Bluetooth Smart)
Logging Rate 1 second to 18 hours
Logging Modes Fixed interval, multiple intervals with up to 8 user-defined logging intervals and durations, or burst
Memory Modes Wrap when full or stop when full
Start Modes Immediate, date & time, or next interval
Stop Modes When memory full, stop with HOBOmobile, date & time, or after a set logging period
Time Accuracy ±1 minute per month 0° to 50°C (32° to 122°F)
Battery Two AA, 1.5 V alkaline batteries, user replaceable
Battery Life 1 year, typical with logging interval of 1 minute. Faster logging and/or statistics sampling intervals, entering burst logging mode, excessive readouts, checking of Full Status Details, and remaining connected with HOBOmobile will impact battery life.
Memory 256 KB memory (30,000 sets of measurements)
Full Memory Download Time Approximately 2 minutes; may take longer the further the device is from the top end of the logger
Dimensions Top end (MX2001-TOP): 2.54 cm (1.0 inches) diameter, 28.9 cm (11.4 inches) length; mounting hole 7.6 mm (0.3 inches) diameter

Sensor end (MX2001-0x-S and MX2001-0x-Ti-S: 2.54 cm (1.0 inches) diameter, 9.91 cm (3.9 inches) length

Note: The length of the water level logger cable (CABLE-DR-xxx) can vary ±3% from the length ordered. The logger adds 38.8 cm (15.3) inches to the length of the cable ordered.

Weight Top end (MX2001-TOP): Approximately 136 g (4.78 oz) in air

Stainless sensor end (MX2001-0x-S): Approximately 106 g (3.74 oz) in air; approximately 53.9 g (1.9 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 water

Wetted Materials Top end (MX2001-TOP): Acetal housing, Polycarbonate end caps, Polycarbonate collar nut; Viton and Buna-N O-rings

Stainless sensor end (MX2001-0x-S): Acetal housing, PVC end cap, Polycarbonate collar nut; Viton and Buna-N O-rings; ceramic sensor in stainless steel end cap

Titanium sensor end (MX2001-0x-Ti-S): Acetal housing, PVC end cap, Polycarbonate collar nut; Viton and Buna-N O-rings; ceramic sensor in Titanium end cap

The CE Marking identifies this product as complying with all relevant directives in the European Union (EU).