HOBO Bluetooth Low Energy Water Level Data Logger

Part # MX2001
 
Starting at $595 USD, plus cable
Starting at
$595

This product requires HOBOmobile and a Direct Read Cable (CABLE-DR-XXX). Please contact us for availability. The HOBOmobile app is available as a free download from iTunes or Google Play.


Learn MoreOther Products in this Series

Overview

The HOBO® MX2001 is the industry’s first water level data logger designed for convenient wireless setup and download from mobile devices via Bluetooth Low Energy. The logger dramatically simplifies and lowers the cost of field data collection by providing wireless access to high-accuracy water level and temperature measurements right from a mobile phone or tablet. The MX2001 logger consists of a top-end unit and a water level sensor which are sold as a set, plus a direct read cable to connect them. Cables can be ordered in lengths from 0.2 to 500m for deployment in a wide range of wells.

Highlighted Features

  • Wireless data offload to mobile devices using Bluetooth Low Energy
  • Integrated barometric pressure sensor enables direct water level readout
  • Direct read cable connects sensor to top-end logger/transmitter
    • The cable includes Kevlar strength member
    • Cables are interchangeable so loggers are easy to redeploy in future applications
    • The logger and sensor add 0.39 meters to the length of the cable
    • Cable length can vary up to 3% from the length ordered
    • The 5, 10, 15, 30 and 60 meter cable lengths are in stock; custom cable lengths have a 2 to 4 week lead time
  • Reference water level can be entered at the start of the deployment
  • Use HOBOmobile 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 event-triggered burst-logging
  • Durable ceramic sensor
  • Available with stainless steel or titanium sensor ends

In what environment does this data logger operate?

This data logger operates in outdoor and underwater environments.

What measurements does this data logger support?

The MX2001 data logger supports the following measurements: Absolute Pressure, Barometric Pressure, Differential Pressure, Water Level and Water Temp

The HOBO® MX2001 is the industry’s first water level data logger designed for convenient wireless setup and download from mobile devices via Bluetooth Low Energy. The logger dramatically simplifies and lowers the cost of field data collection by providing wireless access to high-accuracy water level and temperature measurements right from a mobile phone or tablet. The MX2001 logger consists of a top-end unit and a water level sensor which are sold as a set, plus a direct read cable to connect them. Cables can be ordered in lengths from 0.2 to 500m for deployment in a wide range of wells.

Highlighted Features

  • Wireless data offload to mobile devices using Bluetooth Low Energy
  • Integrated barometric pressure sensor enables direct water level readout
  • Direct read cable connects sensor to top-end logger/transmitter
    • The cable includes Kevlar strength member
    • Cables are interchangeable so loggers are easy to redeploy in future applications
    • The logger and sensor add 0.39 meters to the length of the cable
    • Cable length can vary up to 3% from the length ordered
    • The 5, 10, 15, 30 and 60 meter cable lengths are in stock; custom cable lengths have a 2 to 4 week lead time
  • Reference water level can be entered at the start of the deployment
  • Use HOBOmobile 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 event-triggered burst-logging
  • Durable ceramic sensor
  • Available with stainless steel or titanium sensor ends

In what environment does this data logger operate?

This data logger operates in outdoor and underwater environments.

What measurements does this data logger support?

The MX2001 data logger supports the following measurements: Absolute Pressure, Barometric Pressure, Differential Pressure, Water Level and Water Temp

Learn More

The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.

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

<0.02 kPa (0.003 psi), 0.21 cm (0.007 ft) water

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

<0.085 kPa (0.012 psi), 0.87 cm (0.028 ft) water

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

<0.014 kPa (0.002 psi), 0.14 cm (0.005 ft) water

Pressure Response Time (90%)***

<1 second at a stable temperature

 

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 event-triggered 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

Environmental Rating

NEMA 6, IP67 (top end)

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

*Water Level Accuracy: With accurate reference water level measurement, known water density, and a stable temperature environment. System Water Level Accuracy equals the sum of the Barometric Water Level Accuracy plus the selected sensor end Water Level Accuracy.

**Raw Pressure Accuracy: Absolute pressure sensor accuracy includes all sensor drift, temperature, and hysteresis-induced errors.

***Changes in Temperature: Allow 20 minutes in water to achieve full temperature compensation of the pressure sensor. There can be up to 0.5% of additional error due to rapid temperature changes. Measurement accuracy also depends on temperature response time.

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Tech Notes