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 with Onset's free HOBOconnect app. 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 the following lengths: 1m, 5m and 10m for deployment in a wide range of wells. Shorter or longer cables can be available, please contact our customer service for further information.
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 | |||
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 | |||
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 | |||
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 | |||
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 | |
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 | |
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 -0% to +3% +10 cm (3.9 inches) 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; Viton and Buna-N O-rings Stainless sensor end (MX2001-0x-S): Acetal housing, PVC end cap; 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; Viton and Buna-N O-rings; ceramic sensor in Titanium end cap |
Environmental Rating | Top end: NEMA 6, IP67 |
*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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