DATA LOGGERS

Base Station

Dissolved Oxygen
Data Logger

Hobo® Software

Rain Gauge
Data Logger

Tidbit V2 Temp.
Data Loggers

Tidbit Protective
Boots

Waterproof Data
Shuttle

Water Level
Data Logger

Hobo Pendant Water
Temp/Light Logger

Hobo Pendant Water
Temp Logger

Hobo Tidbit MX2203
Temp Logger

Hobo Tidbit MX2204
Temp Logger

Hobo Coductivity Logger
for Freshwater

Hobo Coductivity Logger
for Saltwater

HOBO pH & Temp.
Data Logger

TidbiT v2 Temperature Data Logger

The TidbiT v2 family data loggers has 12-bit resolution and a precision sensor with high accuracy over a wide temperature range. This new version of the popular underwater logger has twice the memory, an Optic USB Base Station, and works with the new HOBO Waterproof Shuttle. The rugged TidbiT is waterproof to 300m (1000ft) and is equipped with an optic interface for data offload in th field, even when wet.

Requires either the HOBO Waterproof Shuttle or Universal Optic USB Base Station.
You will also need the HOBOware Pro Software or HOBOware Lite Software.

• Enough memory to record more than 42,000 12-bit measurements
• Waterproof to 300m (1000ft)
• Time accuracy: +/-1 minute per month
• High-speed optic USB interface offloads full logger <30 seconds
• Programmable start time/date
• User-selectable sampling interval: 1 second to 18 hours
• Battery level indication at launch
• Battery lasts 5 years (typical); temperature extremes will reduce battery life
• Non-volatile EEPROM memory retains measurements even if battery fails
• Blinking LED confirms operation
• Protective boot for added protection

Download Specification and Instructions for TidbiT v2

TIDBIT PROTECTIVE BOOT:

The optional TidbiT thermoplastic elastometer boot provides cushioning for use in harsh conditions - offered in white to minimize solar radiation absorption and also offered in black to minimize underwater visibility

NEW! HOBO® PENDANT® MX2201 WATER TEMP DATA LOGGER

Using the power of Bluetooth® technology, this data logger delivers measurements directly to your iOS or Android mobile device! Just download the free HOBOmobile App to get started and configure the data logger. The MX2201 measures air temperature, water temperature, and light intensity. The compact, waterproof logger can operate in indoor, outdoor, or underwater environments. An LED alarm lets you know when a sensor reading rises above or falls below a specified value. Mounting tabs allow for fast, easy deployment, and the data logger's memory stores 96,000 measurements.

Temperature Sensor:
- Range: -4°F to 158°F (-20°C to 70°C) in air or -4°F to 122°F (-20°C to 50°C) in water;
- Accuracy: ±0.5°C from -20°C to 70°C (-4°F to 158°F);
- Resolution: 0.072°F (0.04°C);
- Drift: <0.18°F (0.1°C) per year;

Logger:
- Response Time: 17 minutes typical to 90% in air moving 1 m/s, unmounted or 7 minutes typical to 90% in stirred water, unmounted. Transmission Range: Approximately 100' line-of-sight.
- Wireless Data Standard: Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0).
- Operating Range: -4°F to 158°F (-20°C to 70°C) in air.
- Logging Rate: 1 second to 18 hours.
- Waterproof: To 100'.
- Memory: 96,000 measurements.
- Battery: CR2032 3V lithium.
- Battery Life: 1 year typical at 77°F (25°C) with logging interval of 1 minute and Bluetooth Always Off disabled in software; 2 years typical at 77°F (25°C) with logging interval of 1 minute and Bluetooth Always Off enabled in software.
- Time Accuracy: ±1 minute per month at 77°F (25°C).
- Full Memory Download: Approximately 45 seconds.
- Dimensions: 3.35 x 5.64 x 1.8 cm / 1.32" x 2.22" x 0.63".
- Weight: 12.75 g / 0.45 oz.

The HOBO MX2201 data logger requires the HOBOmobile App and a compatible mobile device.  The system requirements for the HOBOmobile app can be found at the bottom of the HOBOmobile software page.

NEW! HOBO® PENDANT® MX2202 WATER TEMP/LIGHT DATA LOGGER

Using the power of Bluetooth® technology, this data logger delivers measurements directly to your iOS or Android mobile device! Just download the free HOBOmobile App to get started and configure the data logger. The MX2202 measures air temperature, water temperature, and light intensity. The compact, waterproof logger can operate in indoor, outdoor, or underwater environments. An LED alarm lets you know when a sensor reading rises above or falls below a specified value. Mounting tabs allow for fast, easy deployment, and the data logger's memory stores 96,000 measurements.

Temperature Sensor:
- Range: -4°F to 158°F (-20°C to 70°C) in air or -4°F to 122°F (-20°C to 50°C) in water;
- Accuracy: ±0.5°C from -20°C to 70°C (-4°F to 158°F);
- Resolution: 0.072°F (0.04°C);
- Drift: <0.18°F (0.1°C) per year;

Light Sensor:
- Range: 0 to 167,731 lux (15,582 lum/ft2);
- Accuracy: ±10% typical for direct sunlight.

Logger:
- Response Time: 17 minutes typical to 90% in air moving 1 m/s, unmounted or 7 minutes typical to 90% in stirred water, unmounted. Transmission Range: Approximately 100' line-of-sight.
- Wireless Data Standard: Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0).
- Operating Range: -4°F to 158°F (-20°C to 70°C) in air.
- Logging Rate: 1 second to 18 hours.
- Waterproof: To 100'.
- Memory: 96,000 measurements.
- Battery: CR2032 3V lithium.
- Battery Life: 1 year typical at 77°F (25°C) with logging interval of 1 minute and Bluetooth Always Off disabled in software; 2 years typical at 77°F (25°C) with logging interval of 1 minute and Bluetooth Always Off enabled in software.
- Time Accuracy: ±1 minute per month at 77°F (25°C).
- Full Memory Download: Approximately 45 seconds.
- Dimensions: 3.35 x 5.64 x 1.8 cm / 1.32" x 2.22" x 0.63".
- Weight: 12.75 g / 0.45 oz.

The HOBO MX2202 data logger requires the HOBOmobile App and a compatible mobile device.  The system requirements for the HOBOmobile app can be found at the bottom of the HOBOmobile software page.

NEW! HOBO® TidbiT MX2203 TEMPERATURE DATA LOGGER

Ideal for long-term deployments, this data logger utilizes Bluetooth® technology to deliver high-accuracy temperature measurements directly to your iOS or Android mobile device. Simply download the free HOBOmobile App to wirelessly set up and configure the data logger. A waterproof boot protects the logger during deployment, and a water detection feature helps to conserve battery life. The logger's LED alarm alerts you when the temperature exceeds a set threshold, and the onboard memory stores up to 96,000 measurements. Waterproof to 400 feet.

Temperature Sensor:
- Range: -4°F to 158°F (-20°C to 70°C) in air or -4°F to 122°F (-20°C to 50°C) in water;
- Accuracy: ±0.45°F from -4°F to 32°F (±0.25°C from -20°C to 0°C), ±0.36°F from 32°F to 158°F (±0.2°C from 0°C to 70°C);
- Resolution: 0.018°F (0.01°C);
- Drift: <0.18°F (0.1°C) per year;

Logger:
- Response Time: 17 minutes typical to 90% in air moving 1 m/s, unmounted or 7 minutes typical to 90% in stirred water, unmounted.
- Transmission Range: Approximately 100' line-of-sight.
- Wireless Data Standard: Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0).
- Operating Range: -4°F to 158°F (-20°C to 70°C)
- Logging Rate: 1 second to 18 hours.
- Waterproof: To 400'.
- Memory: 96,000 measurements.
- Battery: CR2477 3V lithium.
- Battery Life: 3 year typical at 77°F (25°C) with logging interval of 1 minute and Bluetooth Always Off disabled in software; 5 years typical at 77°F (25°C) with logging interval of 1 minute and Bluetooth Always Off enabled in software.
- Time Accuracy: ±1 minute per month at 77°F (25°C).
- Full Memory Download: Approximately 45 seconds.
- Dimensions: 1.75" x 2.88" x 1.41".
- Weight: 1.28 oz.

The HOBO MX2203 data logger requires the HOBOmobile App and a compatible mobile device.  The system requirements for the HOBOmobile app can be found at the bottom of the HOBOmobile software page.

NEW! HOBO® TidbiT MX2204 TEMPERATURE DATA LOGGER

Ideal for long-term deployments, this data logger utilizes Bluetooth® technology to deliver high-accuracy temperature measurements directly to your iOS or Android mobile device. Simply download the free HOBOmobile App to wirelessly set up and configure the data logger. A waterproof boot protects the logger during deployment, and a water detection feature helps to conserve battery life. The logger's LED alarm alerts you when the temperature exceeds a set threshold, and the onboard memory stores up to 96,000 measurements. Waterproof to 5000 feet (1500m).

Temperature Sensor:
- Range: -4°F to 158°F (-20°C to 70°C) in air or -4°F to 122°F (-20°C to 50°C) in water;
- Accuracy: ±0.45°F from -4°F to 32°F (±0.25°C from -20°C to 0°C), ±0.36°F from 32°F to 158°F (±0.2°C from 0°C to 70°C);
- Resolution: 0.018°F (0.01°C);
- Drift: <0.18°F (0.1°C) per year;

Logger:
- Response Time: 15 minutes typical to 90% in air moving 1 m/s, unmounted or 4 minutes typical to 90% in stirred water, unmounted.
- Transmission Range: Approximately 100' line-of-sight.
- Wireless Data Standard: Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0).
- Operating Range: -4°F to 158°F (-20°C to 70°C)
- Logging Rate: 1 second to 18 hours.
- Waterproof: To 5000'.
- Memory: 96,000 measurements.
- Battery: CR2477 3V lithium, non-replaceable.
- Battery Life: 3 year typical at 77°F (25°C) with logging interval of 1 minute and Bluetooth Always Off disabled in software; 5 years typical at 77°F (25°C) with logging interval of 1 minute and Bluetooth Always Off enabled in software.
- Time Accuracy: ±1 minute per month at 77°F (25°C).
- Full Memory Download: Approximately 45 seconds.
- Dimensions: 1.6" x 2.75" x 1.38".
- Weight: 1.16 oz.

The HOBO MX2204 data logger requires the HOBOmobile App and a compatible mobile device.  The system requirements for the HOBOmobile app can be found at the bottom of the HOBOmobile software page.

NEW! HOBO® MX2501 PH & TEMPERATURE DATA LOGGER

Designed for long-term monitoring in estuaries, lakes, streams, rivers, and oceans, this logger measures pH and water temperature. Bluetooth Low Energy® (BLE) connectivity allows the logger to communicate wirelessly with iOS devices through the free HOBOmobile® App. Use the app for easy logger setup, step-by-step calibration, and fast data offload. The logger's 152 KB memory stores up to 43,300 measurements. Equipped with a rugged PVC housing, the logger is waterproof to 40 meters (131.2 feet) and can be deployed in freshwater or saltwater environments. The pH electrode features Pellon® junctions, gel electrolyte, and a glass sensor bulb..

- pH Range: 2.00 to 12.00
- Temperature Range: -2°C to 50°C (28.4°F to 122°F).
- Accuracy pH:, ±0.10 pH units within ±10°C of temperature at calibration;
- Accuracy Temperature: ±0.2°C (±0.36°F).
- Resolution pH: 0.01;
- Resolution Temperature: 0.024°C at 25°C (0.04°F at 77°F).
- Response Time pH: 1 minute typical to 90% at constant temperature in stirred water;
- Response Time Temperature: , 7 minutes typical to 90% in stirred water.
- Operating Range: -2°C to 50°C (28.4°F to 122°F), non-freezing.
- Transmission Range: Approximately 30.5 m (100 feet) line-of-sight in air.
- Logging Rate: 1 second to 18 hours.
- Battery Type: One AA 1.5V.
- Environmental Rating: IP68.
- Dimensions: 9" x 1.68".
- Weight: 9.46 oz.

The HOBO MX2501 data logger requires the HOBOmobile App and a compatible mobile device.  The system requirements for the HOBOmobile app can be found at the bottom of the HOBOmobile software page.

HOBO® CONDUCTIVITY DATA LOGGER FOR FRESHWATER

High-accuracy, cost-effective water quality data logger for measuring conductivity and temperature in streams, lakes, and other freshwater sources. Ideal for monitoring aquifers for saltwater intrusion and road and agricultural runoff. Easy to deploy and maintain, features include a non-contact sensor to minimize drift-related measurement errors, open access to the sensor for cleaning, and the HOBOware Pro software enables start/end-point calibration to compensate for any fouling and provides easy conversion to specific conductance and salinity using the Practical Salinity Scale 1978 (PSS-78). USB optical interface provides high-speed, reliable data offload in wet environments. Compatible with the HOBO Waterproof Shuttle for easy and reliable data retrieval and transport.

• Memory: 18,500 temperature and conductivity measurements when using one conductivity range; 14,400 sets of measurements when using both conductivity ranges (64kbytes).
• Sample rate: 1 second to 18 hrs, fixed or multiple-rate sampling with up to 8 user-defined sampling intervals.
• Battery life: 3 years (@ 1 min logging).
• Maximum Depth: 70 m (225').
• Operating Range: -2 to 36°C (28° to 97°F) - non freezing.
• Weight: 6.82 oz.; buoyancy in freshwater: -2.11 oz.
• Size: 1.25" diameter x 6.5", 1/4" hole.

• Conductivity Range: Low Range: 0 to 1,000 µS/cm; Full Range: 0 to 10,000 µS/cm.
• Temperature Range: 41°F to 95°F (5°C to 35°C).
• Conductivity Accuracy: 3% of reading, or 5 µS/cm, whichever is greater.
• Temperature Accuracy: 0.2°F (0.1°C).
• Conductivity Resolution: 1 uS/cm.
• Response time: 1 second to 90% of change.

Requires either the HOBO Waterproof Shuttle or Universal Optic USB Base Station.
You will also need the HOBOware Pro Software.

HOBO® CONDUCTIVITY DATA LOGGER FOR SALTWATER

High-accuracy, cost-effective water quality data logger measures actual conductivity and temperature plus provides specific conductance at 25°C (77°F) and salinity with the HOBOware® Conductivity Assistant (included in the HOBOware Pro Software). Easily deployable, this rugged logger is ideal for environments with relatively small changes in salinity (±5,000 uS/cm), such as saltwater bays, or to detect salinity events, such as upwelling, rainstorm, and discharge events. An optional protective housing is available to help better protect the logger, reduce fouling, and simplify mounting in harsh environments. Easy to maintain, features include a non-contact sensor to minimize drift-related measurement errors, open access to the sensor for cleaning, and the HOBOware Pro software enables start/end-point calibration to compensate for any fouling and provides easy conversion to specific conductance and salinity using the Practical Salinity Scale 1978 (PSS-78). USB optical interface provides high-speed, reliable data offload in wet environments. Compatible with the HOBO Waterproof Shuttle for easy and reliable data retrieval and transport.

• Memory: 18,500 temperature and conductivity measurements when using one conductivity range; 14,400 sets of measurements when using both conductivity ranges (64kbytes).
• Sample rate: 1 second to 18 hrs, fixed or multiple-rate sampling with up to 8 user-defined sampling intervals.
• Battery life: 3 years (@ 1 min logging).
• Maximum Depth: 70 m (225').
• Operating Range: -2 to 36°C (28° to 97°F) - non freezing.
• Weight: 6.82 oz.; buoyancy in freshwater: -2.11 oz.
• Size: 1.25" diameter x 6.5", 1/4" hole.

• Conductivity Range (Calibrated Range): High Range, 5,000 to 55,000 uS/cm; Low Range, 100 to 10,000 uS/cm
• Temperature Range: 28°F to 97°F (-2°C to 36°C).
• Conductance Accuracy (Calibrated Range): 3 Low Range, 3% of reading or 50 uS/cm, whichever is greater. High Range, up to 5% of reading, in waters within a range of ±3,000 uS/cm of the calibration point (waters with greater variation can have substantially greater error).
• Temperature Accuracy: 0.2°F (0.1°C).
• Conductivity Resolution: 2 uS/cm.
• Temperature Resolution: 0.02°F (0.01°C).
• Drift: Conductivity, up to 12% sensor drift per month, exclusive of drift from fouling.
• Response time: 1 second to 90% of change.

Requires either the HOBO Waterproof Shuttle or Universal Optic USB Base Station.
You will also need the HOBOware Pro Software.

HOBO® DISSOLVED OXYGEN LOGGER - U26-001:

Measure oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters with the HOBO U26 Dissolved Oxygen Logger. This affordable and precise logger is recommended for aquatic biology and hydrology research projects. The HOBO U26 uses RDO® Basic (Rugged Dissolved Oxygen) optical DO sensor technology and is easy to maintain.

• Affordable, high performance dissolved oxygen (DO) monitoring with 0.2 mg/L accuracy
• Optical DO sensor technology for long-lasting calibration with less maintenance
• Dissolved Oxygen Assistant software corrects for measurement drift from fouling; provides salinity-adjusted DO concentrations and percent saturation
• Optical USB interface for high-speed, reliable data offload
• Easy-to-replace DO sensor cap lasts six months

NOTE: For DO measurements in saltwater, an adjustment for salinity is required. For waters with small changes in salinity (<2 ppt), a salinity meter reading typically provides enough accuracy.
Includes:
• U26-001 data logger
• DO sensor cap
• Protective Guard
• Calibration Boot with sponge
Environment:
The U26-001 Data Logger is for use in Underwater environments
Measurements:
The U26-001 Data Logger supports the following measurements:
Temperature, Dissolved Oxygen

Dissolved Oxygen:
Sensor Type: Optical
Measurement Range: 0 to 30 mg/L
Calibrated Range: 0 to 20 mg/L; 0 to 35°C (32 to 95°F)
Accuracy: 0.2 mg/L up to 8 mg/L; 0.5 mg/L from 8 to 20 mg/L
Resolution: 0.02 mg/L
Response Time: To 90% in less than 2 minutes
DO Sensor Cap Life: 6 months, cap expires 7 months after initialization
Temperature:
Temperature Measurement/Operating Range: -5 to 40°C (23 to 104°F); non-Freezing
Temperature Accuracy: 0.2°C (0.36°F)
Temperature Resolution: 0.02°C (0.04°F)
Response Time: To 90% in less than 30 minutes
Logger:
Memory: 21,700 sets of DO and temperature measurements (64 KB total memory)
Logging Rate: 1 minute to 18 hours
Time Accuracy: ±1 minute per month at 0 to 50°C (32 to 122°F)
Battery: 3.6 V lithium battery; factory replaceable 
Battery Life: 3 years (at 5 minute logging)
Download Type: Optical
Depth Rating: 100 m (328 ft)
Wetted Materials: Black Delrin®, PVC, EPDM o-rings, silicone bronze screws; rated for saltwater use
Size: 39.6 mm diameter x 266.7 mm length (1.56 x 10.5 inches)
Weight: 464 g (16.37 oz)


Requires either the HOBO Waterproof Shuttle or Universal Optic USB Base Station.
You will also need the HOBOware Pro Software.

WATER LEVEL LOGGER:

Onset offers high-accuracy, pressure-based water level data loggers for deployment in depths of up to 250 feet in fresh or saltwater wells, streams, lakes, wetlands and tidal areas. These water level loggers feature research-grade accuracy at a great price. Stainless steel and titanium models are available. For saltwater deployments, such as brackish wetlands and tidal areas, see HOBO U20 Water Level Titanium. The HOBO Water Level Logger is a high-accuracy, pressure based water level recording device. Operating as a standalone unit, it does not rely on cumbersome vent tubes and desiccant packs for operation which simplifies deployment and eliminates many maintenance issues. Features an Optical/USB interface, a durable ceramic pressure sensor, and multiple-rate sampling for faster sampling at critical times such as when pumping starts or stops. Includes calibration certificate of accuracy versus NIST-traceable standards at three pressure points distributed through the range.

Available in 4 Depth Ranges
0 to 4 m (0 to 13 ft) with Accuracy: ±0.075% FS, 0.3 cm (0.01 ft)
0 to 9 m (0 to 30 ft) with Accuracy: ±0.05% FS, 0.5 cm (0.015 ft)
0 to 30.6 m (0 to 100 ft) with Accuracy: ±0.05% FS, 1.5 cm (0.05 ft)
0 to 76.5 m (0 to 251 ft) with Accuracy: ±0.05% FS, 3.8 cm (0.125 ft)

Requires either the HOBO Waterproof Shuttle or Universal Optic USB Base Station.
You will also need the HOBOware Pro Software.

DATA LOGGING RAIN GAUGE:

This fully self-contained rain gauge utilizes a tipping-bucket rainfall collector and a HOBO® Pendant Event Data Logger to automatically record up to 160 inches of rainfall data with a 16,000-tip memory capacity. The nonvolatile EEPROM memory retains data even if the battery fails. Start date and time can be programmed by the user. A HOBO® Pendant Optic USB Base Station and HOBOware™ software (each sold separately) are required to connect the rain gauge to a computer for launch and readout. The rain gauge features a removable top for easy data offload, three mounting feet for setup on level surfaces (three screws included), and a side bracket for mast mounting (hose clamps included).

Specifications:
Housing: Aluminum with baked-on enamel finish. Stainless steel shaft and brass bearings. High-impact ABS plastic tipping bucket. Funnel: Anodized aluminum.
Operating temperature range: 32°°F to 122°F (0°C to 50°C).
Storage temperature range: -4°F to 158°F (-20°C to 70°C).
Accuracy: ±1% (up to 1" per hour).
Time accuracy: ±1 minute per month at 77°F (25°C).
Rainfall resolution: English, 0.01"; Metric, 0.2mm.
Power: CR-2032 3V lithium battery.
Battery life: one year typical use.
Dimensions: 10"H x 6.5" diameter.

Requires either the HOBO Waterproof Shuttle or HOBO® Pendant Optic USB Base.
You will also need the HOBOware Pro Software.

Universal Optic USB Base Station:

The new Universal Optic USB Base Station and a series of couplers are used to offload data from any HOBO® data logger with an Optic USB interface. The Optic USB Base Station connects to your computer via USB, while connecting to the logger via an appropriate coupler.

Features
• Offloads a full 64K logger in 30 seconds
• Optical interface to logger eliminates unreliable connectors
• Base station is splash-proof (connectionx to computer is not)
• Couplers are color-coded to loggers
• Easy USB connection to computer
• Operating Temperature Range: 0 to 50 °C (32 to 122 °F)

Specifications
Dimensions (without adapters): 15.2 cm x 4.8 cm ( 6.0 in x 1.9 in)
Weight: 153g (5.3 oz)

HOBO Waterproof Shuttle:

The HOBO® Waterproof Shuttle provides convenient readout and relaunching of underwater and outdoor HOBO loggers with an Optic USB interface, and is waterproof to 20m (66ft). The HOBO Waterproof Shuttle can also be used as a base station.

Features
• Allows for data readout under water while diving or snorkeling
• Rugged waterproof construction
• LEDs show offload and relaunch status
• Convenient direct USB connection to host computer
• Checks and indicates its own battery status
• Synchronizes data logger clocks
• Synchronizes relaunch: sets data logger sample times to be synchronized with prior launch sample times
• Can also be used as an Optic USB base station for loggers with an Optic USB interface

Specifications
Memory: 4 MB non-volatile memory stores data from 63 loggers
Operating temperature range while communicating: 0 to 50 °C (32 °F to 122 °F)
Survival temperature: -20 °C to 50 °C (-4 °F to 122 °F)
Rating: Waterproof to 20m (66ft)
Clock accuracy: +/-1 minute/month at 25 °C (77 °F)
Logger offload speed (into shuttle): approximately 15 seconds for 64K
Shuttle to host computer offload: approximately 6 minutes for 4MB
Batteries: two AA batteries (user-replaceable)
Battery life: 1 year or approximately 200 complete memory fills, typical
Case materials: Polycarbonate, EPDM Rubber O-rings

HOBOware Pro Software:

HOBOware Pro for Windows and Mac is part of Onsets next generation of software for logger management, data graphing, data analysis, and data export.
Data Assistants and Real-Time Alarm Plug-ins provide advance data analysis and monitor/notification of out-of-range conditions. Supports 21 CFR Part 11 compliance.