HOBO TidbiT MX Temperature 400-ft Data Logger
Overview
A waterproof temperature logger that uses the power of Bluetooth to deliver high-accuracy data straight to your mobile device or Windows computer running HOBO Data Loggers’ free HOBOconnect app. Designed for durability, this rugged logger is ideal for long-term deployments in streams, lakes, and oceans (up to 400-foot depths). Also includes a feature to detect and record the presence of water, which is ideal for monitoring intermittent water applications. Data collection in the field has never been easier!
HOBO TidbiT MX Temperature 400-ft Data Logger
Features
- Convenient wireless setup and download via Bluetooth
- Large memory stores 96,000 measurements
- Waterproof to 120 meters (400 feet)
- Water-detection feature records when logger is in and out of the water
- User-replaceable battery
- Waterproof boot protects the logger during deployment
- LED indicates when temperature exceeds set threshold
- Battery life extension feature
- Works with Onset’s free HOBOconnect app
- ±0.2°C (±0.36°F) accuracy
HOBO TidbiT MX Temperature 400-ft Data Logger
Specifications
Temperature Sensor
Range
-20° to 70°C in air; -20° to 50°C in water
-4° to 158°F in air; -4° to 122°F in water
Accuracy
±0.25°C from -20° to 0°C
±.45°F from -4° to 32°F
±0.2°C from 0° to 70°C
±0.36°F from 32° to 158°F
Resolution
0.01°C
0.018°F
Drift
<0.1°C per year
<0.18°F per year
Response Time
17 minutes typical to 90% in air moving 1 m/s, unmounted;
7 minutes typical to 90% in stirred water, unmounted
Logger
Logger Operating Range
-20° to 70°C
-4° to 158°F
Buoyancy (Fresh Water)
3.1 g negative
0.11 oz negative
Depth Rating
IP68; waterproof to 122 m (400 ft)
Water Detection
Water conductivity level of 100 µS/cm or greater necessary for reliable detection of water. Deionized water or water below 100 µS/cm may not be detected.
The water conductivity circuit may not reliably detect water that has frozen around the electrodes, i.e. below 0°C (32°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
Time Accuracy
±1 minute per month at 25°C
±1 minute per month at 77°F
Battery
CR2477 3V lithium, user replaceable
Battery Life
3 years, typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always Off disabled in software.
5 years, typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always Off or Bluetooth Off Water Detect enabled in software.
Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life.
To ensure proper battery installation, see Battery Information for detailed instructions on replacing the battery in the MX2203 logger.
Memory
96,000 measurements
Full Memory Download Time
Approximately 45 seconds; may take longer the farther the device is from the logger
Wetted Materials
Polypropylene case, Delrin® battery cover, EPDM O-ring, stainless steel screws, Santoprene® (TPE) boot
Dimensions
4.45 x 7.32 x 3.58 cm
1.75 x 2.88 x 1.41 inches
Weight
36.2 g
1.28 oz
HOBO TidbiT MX Temperature 400-ft Data Logger
