HOBO Water Level Data Logger
Overview
The industry’s first water level data logger designed for convenient wireless setup and download via Bluetooth technology. Dramatically simplifies and lowers the cost of field data collection by providing wireless access to high-accuracy water level and temperature data right from a mobile phone, tablet, or Windows computer running our free HOBOconnect app. Consists of a top-end unit and a water level sensor which are sold as a set. A direct-read cable is required to connect them. Cables can be ordered in lengths from 0.2 to 500m for deployment in a wide range of wells. Add the cable from Compatible Items below or visit the Direct Read Cable product page.
HOBO Water Level Data Logger
Features
- Wireless data offload to mobile devices or Windows computers via Bluetooth
- 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 1, 2, 5, 10, 15, 30 and 60 meter cable lengths are in stock; custom cable lengths have a 1 to 2 week lead time
- Reference water level can be entered at the start of the deployment
- Use HOBOconnect 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
- 3-point NIST-traceable calibration certificate included for the water pressure sensor
HOBO Water Level Data Logger
Specifications
Pressure (Absolute) and Water Level Measurements MX2001-01-SS-S and MX2001-01-Ti-S
Operation Range
0 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
0 to 30 psia; approximately 0 to 30 ft of water depth at sea level, or 0 to 40 ft of water at 10,000 ft of altitude
Factory Calibrated Range
69 to 207 kPa, 0° to 40°C
10 to 30 psia, 32° to 104°F
Burst Pressure
310 kPa or 18 m depth
45 psia or 60 ft depth
Water Level Accuracy*
Typical error: ±0.05% FS, 0.5 cm water
Typical error: ±0.05% FS, 0.015 ft water
Maximum error: ±0.1% FS, 1.0 cm water
Maximum error: ±0.1% FS, 0.03 ft water
Raw Pressure Accuracy**
±0.3% FS, 0.62 kPa maximum error
±0.3% FS, 0.09 psi maximum error
Resolution
<0.02 kPa, 0.21 cm water
<0.003 psi, 0.007 ft water
Pressure Response Time (90%)***
<1 second at a stable temperature
HOBO Water Level Data Logger
Pressure (Absolute) and Water Level Measurements MX2001-02-SS-S
Operation Range
0 to 400 kPa;
0 to 58 psia;
approximately 0 to 30.6 m of water depth at sea level, or 0 to 33.6 m of water at 3,000 m of altitude
approximately 0 to 100 ft of water depth at sea level, or 0 to 111 ft of water at 10,000 ft of altitude
Factory Calibrated Range
69 to 400 kPa, 0° to 40°C
10 to 58 psia, 32° to 104°F
Burst Pressure
500 kPa or 40.8 m depth
72.5 psia or 134 ft depth
Water Level Accuracy*
Typical error: ±0.05% FS, 1.5 cm water
Typical error: ±0.05% FS, 0.05 ft water
Maximum error: ±0.1% FS, 3.0 cm water
Maximum error: ±0.1% FS, 0.1 ft water
Raw Pressure Accuracy**
±0.3% FS, 1.20 kPa maximum error
±0.3% FS, 0.17 psi maximum error
Resolution
<0.04 kPa, 0.41 cm water
<0.006 psi, 0.013 ft water
Pressure Response Time (90%)***
<1 second at a stable temperature
HOBO Water Level Data Logger
Pressure (Absolute) and Water Level Measurements MX2001-03-SS-S
Operation Range
0 to 850 kPa; approximately 0 to 76.5 m of water depth at sea level, or 0 to 79.5 m of water at 3,000 m of altitude
0 to 123.3 psia; approximately 0 to 251 ft of water depth at sea level, or 0 to 262 ft of water at 10,000 ft of altitude
Factory Calibrated Range
69 to 850 kPa, 0° to 40°C
10 to 123.3 psia, 32° to 104°F
Burst Pressure
1,200 kPa or 112 m depth
174 psia or 368 ft depth
Water Level Accuracy*
Typical error: ±0.05% FS, 3.8 cm water
Typical error: ±0.05% FS, 0.125 ft water
Maximum error: ±0.1% FS, 7.6 cm water
Maximum error: ±0.1% FS, 0.25 ft water
Raw Pressure Accuracy**
±0.3% FS, 2.55 kPa maximum error
±0.3% FS, 0.37 psi maximum error
Resolution
<0.085 kPa, 0.87 cm water
<0.012 psi, 0.028 ft water
Pressure Response Time (90%)***
<1 second at a stable temperature
HOBO Water Level Data Logger
Pressure (Absolute) and Water Level Measurements MX2001-04-SS-S and MX2001-04-Ti-S
Operation Range
0 to 145 kPa; approximately 0 to 4 m of water depth at sea level, or 0 to 7 m of water at 3,000 m of altitude
0 to 21 psia; approximately 0 to 13 ft of water depth at sea level, or 0 to 23 ft of water at 10,000 ft of altitude
Factory Calibrated Range
69 to 145 kPa, 0° to 40°C
10 to 21 psia, 32° to 104°F
Burst Pressure
310 kPa or 18 m depth
45 psia or 60 ft depth
Water Level Accuracy*
Typical error: ±0.075% FS, 0.3 cm water
Typical error: ±0.075% FS, 0.01 ft water
Maximum error: ±0.15% FS, 0.6 cm water
Maximum error: ±0.15% FS, 0.02 ft water
Raw Pressure Accuracy**
±0.3% FS, 0.43 kPa maximum error
±0.3% FS, 0.063 psi maximum error
Resolution
<0.014 kPa, 0.14 cm water
<0.002 psi, 0.005 ft water
Pressure Response Time (90%)***
<1 second at a stable temperature
Barometric Pressure (MX2001-TOP)
Operation Range
66 to 107 kPa
9.57 to 15.52 psia
Temperature Calibrated Range
-20 to 50°C
-4 to 122°F
Accuracy
±0.2 kPa over full temperature range at fixed pressure; maximum error ±0.5% FS
±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 water
Typical error: ±0.075% FS, 0.01 ft water
Maximum error: ±0.15% FS, 0.6 cm water
Maximum error: ±0.15% FS, 0.02 ft water
Resolution
<0.01 kPa
<0.0015 psi
Response Time
<1 second at stable temperature
Stability (Drift)
<0.01 kPa per year
<0.0015 psi per year
HOBO Water Level Data Logger
Temperature Measurements (All Sensor End Models MX2001-0x-SS-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, see manual for plot
±0.79°F from 32° to 122°F, see manual for plot
Resolution
0.1°C at 25°C, see manual for plot
0.18°F at 77°F, see manual for plot
Response Time (90%)
5 minutes in water (typical)
Stability (Drift)
0.1°C per year
0.18°F per year
Logger
Operating Range
-20° to 50°C
-4° to 122°F
Radio Power
1 mW
0 dBm
Transmission Range
Approximately 30.5 m line-of-sight
Approximately 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, date & time, or after a set logging period
Time Accuracy
±1 minute per month 0° to 50°C
±1 minute per month 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 the app 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-SS-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-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 water
Wetted Materials
Top end (MX2001-TOP): PVC housing, Polycarbonate end cap, Viton O-ring
Stainless sensor end (MX2001-0x-SS-S): Stainless steel housing, Viton and Buna-N O-rings, ceramic sensor in stainless steel end cap
Titanium sensor end (MX2001-0x-Ti-S): Acetal housing, Viton and Buna-N O-rings, ceramic sensor in Titanium end cap
Cable (CABLE-DR-XXX): Polycarbonate strain relief (top end connection), PVC end cap (sensor connection), nylon collar nuts, Viton O-rings, polyurethane jacket
Environmental Rating
Top end: NEMA 6, IP67; Intermittent 100% RH
Sensor end: IP68
Notices
*
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.
HOBO Water Level Data Logger
