HOBO MX20L Self-contained Bluetooth (BLE) Water Level & Temperature Data Logger

Name: HOBO MX20L Self-contained Bluetooth (BLE) Water Level & Temperature Data Logger
Brand: HOBO
SKU: MX20L-04
Price: 492.46 GBP
Availability: BackOrder

In stock

SKU

MX20L-04

£590.95 £492.46

A low-cost, research-grade data logger with Bluetooth data offload to continuously monitor water level and temperature. Measures at depths of up to 13, 30, or 100 feet in a wide range of underwater environments, both freshwater and saltwater.

Select Rated Depth

Optional Teflon-coated Stainless Steel Cable

Well Cap for Mounting HOBO Loggers in Wells

WELL-CAP-01 + £94.96 £79.13

Optional cloud data storage and analysis - select an annual MX Data Plan from the options below (one Data Plan required per logger)

MX-Speed (Supports up to 4 measurements with 1 minute logging) + £29.95 £24.96

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MX-Data (Supports up to 10 measurements with 5 minute logging) + £29.95 £24.96

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Optional near real-time remote monitoring and alerts via email/text message (requires an MX Gateway, plus one MX Data Plan for each MX Logger)

MX Gateway for HOBO MX Data Loggers (SKU: MXGTW1) + £512.95 £427.46

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Details

The MX20L Water Level Logger brings you all the great features of the U20L and more!

Integrating Bluetooth for fast and reliable data download, the MX20L logger eliminates the need to plug your logger into a base station or shuttle to offload data in the field, ensuring continuous water level and temperature monitoring. With options to measure at depth ranges of 13, 30, or 100 feet in a wide range of underwater environments, this rugged logger features 0.1% measurement accuracy, a durable polypropylene housing for use in both freshwater and saltwater, and a non-vented design for convenient and reliable deployment.

The MX20L comes with a magnetic activation fob that can "wake up" the logger to activate its Bluetooth communication for configuration and data download. The included fob comes with a lanyard to prevent losing or dropping the fob in the field. Additional activation fobs are available for purchase.

This logger records absolute pressure, which is later converted to water level readings by HOBOconnect software. To compensate for barometric pressure changes, you can use another HOBO MX20L Water Level logger as a barometric reference.

Key Features

Self-contained, non-vented design enables easy deployment
Ideal for use in both freshwater and saltwater environments, including wells, streams, lakes, wetlands, and tidal areas
Depth measurement options of up to 13, 30, or 100 feet depending on model
Durable ceramic pressure sensor withstands freezing
Streamlined data offload via Bluetooth to the free HOBOconnect app
HOBOconnect app provides easy extraction and visualisation of water level data
Extended battery life up to 10 years (power-saving mode requires magnetic fob to activate Bluetooth for data download).

Requires a compatible mobile device or Windows computer and the HOBOconnect app (available from iTunes or Google Play).

Note: A calibration certificate is not offered for this logger. If you require an NIST-traceable calibration certificate, please see the U20-001-01 (freshwater) or U20-001-01-Ti (saltwater).

Technical Data

More Information
Country of Manufacture	United States
Explanation	Pressure (Absolute) and Water Level Measurements MX20L-01 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, 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: ±0.1% FS, 1.0 cm (0.03 ft) Water Maximum error: ±0.2% FS, 2.0 cm (0.06 ft) Water Raw Pressure Accuracy ±0.3% FS, 0.62 kPa (0.09 psi) Maximum error Resolution <0.02 kPa Water 0.007 ft Water Pressure Response Time (90%)* <1 second at a stable temperature; measurement accuracy also depends on temperature response time Pressure (Absolute) and Water Level Measurements MX20L-02 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: ±0.1% FS, 3.0 cm (0.1 ft) Water Maximum error: ±0.2% FS, 6.0 cm (0.2 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; measurement accuracy also depends on temperature response time Pressure (Absolute) and Water Level Measurements MX20L-04 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: ±0.1% FS, 0.4 cm (0.013 ft) Water Maximum error: ±0.2% FS, 0.8 cm (0.026 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; measurement accuracy also depends on temperature response time Temperature Measurements (All Models) Operation Range -20° to 50°C -4° to 122°F Accuracy ±0.2°C from 0° to 50°C ±0.36°F from 32° to 122°F Resolution 0.10°C at 25°C 0.18°F at 77°F Response Time (90%) 10 minutes in water (typical) Stability (Drift) 0.1°C per year 0.18°F per year Logger Wireless Standard Bluetooth 5 LE Transmission Range Approximately 30.5 m (100 ft) line-of-sight Radio Power 1mW (0 dBm) Real-time Clock ±1 minute per month 0° to 50°C (32° to 122°F) Battery 2/3 AA, 3.6 Volt lithium, factory-replaceable Battery Life (Typical Use) 3 years with 1-minute logging and Bluetooth always on 7 years with 1-minute logging and Bluetooth off and LED off 10 years with 5-minute logging and Bluetooth off and LED off Battery Indication Battery status shown in HOBOconnect app (approximate) Memory (Non-volatile) Approximately 400,000 sets of pressure and temperature measurements Data Download Time (with Bluetooth 5+ devices) Full Memory: Approximately 3.5 minutes 1000,000 measurements < 1 minute Weight Approximately 154 g (5.43 oz) in air Approximately 53.9 g (1.9 oz) in fresh water Dimensions 3.18 cm (1.25 inches) diameter, 15.24 cm (6.0 inches) length; mounting hole 6.3 mm (0.25 inches) diameter Wetted Materials Polypropylene housing and lanyard; Viton and Buna-N O-rings; ceramic sensor in acetal end cap; stainless steel screws suitable for saltwater Logging Modes Fixed-interval (normal or statistics), burst or multiple intervals with up to 8 user-defined intervals and durations; logging intervals from 1 second to 18 hours. Refer to the HOBOconnect User’s Guide for details. Start Modes Immediate, next interval, date & time, button start (fob or app) Stop Modes Memory full, never stop (overwrite oldest data), date & time, or after set logging period Pause Pause and restart with HOBOconnect app Alarms Log high- or low-alarm events; alarm status shown in HOBOconnect app Environmental Rating IP68 * Water Level Accuracy: With accurate reference water level measurement, known water density, accurate barometric compensation data, and a stable temperature environment. 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. Maximum error due to rapid thermal changes is approximately 0.5%. FAQs How can I get a compensated barometric pressure reading? The MX20L logger records absolute pressure, which is later converted to water level readings by HOBOconnect software. To compensate for barometric pressure changes, you can use another HOBO MX20L Water Level logger as a barometric reference. The barometric reference device is typically deployed in the same well or at the same location as the water level of interest, but rather than being placed in the water column, it is deployed above the water in air. Since barometric pressure readings are consistent across a region (except during fast-moving weather events), you can generally use barometric pressure readings that are taken within 15 km (10 miles) of the logger or more without significantly degrading the accuracy of the compensation. This means you only need to use one MX20L logger as a barometric reference for any loggers within this range.
Ideal For	Professional
Brand	HOBO
HOBO Product Series	MX2000
Typical applications	Environmental (Outdoor), Field Research
Measurements	Barometric Pressure, Water Level, Water Temperature

Delivery

Standard delivery (Royal Mail) - £3.95 to £4.99

Available for purchases under £200. Your order should be with you within 4-5 working days.

Tracked delivery - £5.95 to £6.50

Our tracked delivery is either Royal Mail tracked, Parcelforce or UPS. Your order should be with you within 1-2 working days.

Next Day service - £9.95

Place your order before 2:30pm Monday - Friday and receive your order the next working day (excludes Saturdays, Sundays and Public holidays). Orders placed at the weekend are shipped on the next working day and usually arrive the following day. Goods shipped on a next working day service may be subject to delays by the courier which are outside of our control. Services to outlying areas may differ and take longer and enhanced services may not be available.

International delivery

International delivery is available for this product. The cost and delivery time depend on country.

Collection

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