Hobo MX2001 Bluetooth Water Level Logger

 

Hobo MX2001 440x400

 

 

Features

  • Wireless data offload to mobile devices using Bluetooth Low Energy
  • Direct read cable connects sensor to top-end logger/transmitter
    • The cable includes Kevlar strength member
    • Twist-on connectors make it easy to change cables
    • 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
  • 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

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 connected by a direct read cable. Cables can be ordered in lengths from 0.2 to 500m for deployment in a wide range of wells.

The HOBOmobile app, a free download from iTunes, makes it a snap to configure HOBO MX2001 loggers and manage the collected data. You can view data in graphs, check the operational status of loggers, configure alarm notifications, and share data files.s.

Technical

Pressure (Absolute) and Water Level Measurements MX2001-01-S and MX2001-01-Ti-S  -  9 Meter (30') range​ 
Operation Range0 to 207 kPa ; approximately 0 to 9 m of water depth at sea level, or 0 to 12 m of water at 3,000 m of altitude
Factory Calibrated Range69 to 207 kPa, 0° to 40°C
Burst Pressure310 kPa or 18 m depth
Water Level Accuracy*Typical error: ±0.05% FS, 0.5 cm water, Maximum error: ±0.1% FS, 1.0 cm water
Raw Pressure Accuracy**±0.3% FS, 0.62 kPa maximum error
Resolution<0.02 kPa, 0.21 cm 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 Range0 to 400 kPa; approximately 0 to 30.6 m of water depth at sea level, or 0 to 33.6 m of water at 3,000m of altitude
Factory Calibrated Range69 to 400 kPa, 0° to 40°C
Water Level Accuracy*Typical error: ±0.05% FS, 1.5 cm water, Maximum error: ±0.1% FS, 3.0 cm water
Burst Pressure500 kPa or 40.8 m depth
Raw Pressure Accuracy**±0.3% FS, 1.20 kPa maximum error
Resolution0.04 kPa, 0.41 cm 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 Range0 to 850 kPa; approximately 0 to 76.5 mof water depth at sea level, or 0 to 79.5 m of water at 3,000m of altitude
Factory Calibrated Range69 to 850 kPa, 0° to 40°C
Burst Pressure1,200 kPa or 112 m depth
Water Level Accuracy*Typical error: ±0.05% FS, 3.8 cm water, Maximum error: ±0.1% FS, 7.6 cm water
Raw Pressure Accuracy**±0.3% FS, 2.55 kPa (0.37 psi) maximum error
Resolution<0.085 kPa, 0.87 cmwater
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 Range0 to 145 kPa; approximately 0 to 4m of water depth at sea level, or 0 to 7m of water at 3,000m of altitude
Factory Calibrated Range69 to 145 kPa, 0° to 40°C
Burst Pressure310 kPa or 18 m depth
Water Level Accuracy*Typical error: ±0.075% FS, 0.3 cm water, Maximum error: ±0.15% FS, 0.6 cm) water
Raw Pressure Accuracy**±0.3% FS, 0.43 kPa maximum error
Resolution<0.014 kPa, 0.14 cm water
Pressure Response Time (90%)***<1 second at a stable temperature

Barometric Pressure (MX2001-TOP) 
Operation and Calibrated Range66 to 107 kPa; -20° to 50°C
Accuracy±0.2 kPa over full temperature range at fixed pressure; maximum error ±0.5% FS
Water Level Accuracy*Typical error: ±0.075% FS, 0.3 cm water, Maximum error: ±0.15% FS, 0.6 cm water
Resolution0.01 kPa
Response Time1 second at stable temperature
Stability (Drift)0.01 kPa per year

Temperature Measurements (All Sensor End Models MX2001-0x-S and MX2001-0x-Ti-S) 
Operation Range-20° to 50°C
Accuracy±0.44°C from 0° to 50°C
Resolution0.1°C at 25°C
Response Time (90%)5 minutes in water (typical)
Stability (Drift)0.1°C per year

Logger 
Operation Range-20° to 50°C
Radio Power1 mW (0 dBm)
Transmission RangeApproximately 30.5 m line-of-sight
Wireless Data StandardBluetooth Low Energy (Bluetooth Smart)
Logging Rate1 second to 18 hours
Logging ModesFixed interval, multiple intervals with up to 8 user-defined logging intervals and durations, or burst
Memory ModesWrap when full or stop when full
Start ModesImmediate, date & time, or next interval
Stop ModesWhen memory full, stop with HOBOmobile, date & time, or after a set logging period
Time Accuracy±1 minute per month 0° to 50°C
BatteryTwo AA, 1.5 V alkaline batteries, user replaceable
Battery Life1 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.
Memory256 KB memory (30,000 sets of measurements)
Full Memory Download TimeApproximately 2 minutes; may take longer the further the device is from the top end of the logger
DimensionsTop end (MX2001-TOP): 2.54 cm diameter, 28.9 cm length; mounting hole 7.6 mm diameter
Sensor end (MX2001-0x-S and MX2001-0x-Ti-S: 2.54 cm diameter, 9.91 cm 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 inches to the length of the cable ordered.
WeightTop end (MX2001-TOP): Approximately 136 g in air
Stainless sensor end (MX2001-0x-S): Approximately 106g in air; approximately 53.9 g in fresh water
Titanium sensor end (MX2001-0x-Ti-S): Approximately 80 g in air; approximately 37 g in fresh water
Wetted MaterialsTop 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).

*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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