Jeroen Smits
Specialist Data Acquisition
HOBO MX2205 TidbiT External Temperature Logger
Bluetooth-enabled logger with external sensor
NEW
A waterproof data logger with both an internal sensor and an external sensor that’s designed for monitoring fast-changing temperatures; can be deployed just above water or soil, for the most convenient wireless data download to your mobile device or laptop.
IMPORTANT INFORMATION
Requires a compatible mobile device or Windows computer and the HOBOconnect app. System requirements for the app can be found at the bottom of the HOBOconnect software page.
Technical specifications
Temperature Sensors
Range
Probe | -40 to 100°C (-40 to 212°F), with tip and cable immersion in fresh water up to 50°C (122°F) for one year
Logger | -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in water, maximum sustained temperature in water 30°C (86°F)
Accuracy
Probe
±0.25°C from -40 to 0°C
(±0.45 from -40 to 32°F)
±0.2°C from 0 to 70°C
(±0.36 from 32 to 158°F)
±0.25°C from 70 to 100°C
(±0.45 from 158 to 212°F)
Logger
±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 (0.18°F) per year
Response Time
Probe | 3 minutes in air moving 1 m/sec; 20 seconds in stirred water
Logger | 15 minutes typical to 90% in air moving 1 m/s, unmounted; 4 minutes typical to 90% in stirred water, unmounted
Logger
Logger Operating Range
-20° to 70°C (-4° to 158°F)
Buoyancy (Fresh Water)
14.26 g (0.50 oz) negative
Waterproof Rating
To 30.5 m (100 ft)
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
Time Accuracy
±1 minute per month at 25°C (77°F)
Battery
CR2477 3V lithium, non-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 enabled in the app.
Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may affect battery life.
Memory
96,000 measurements
Full Memory Download Time
Approximately 45 seconds; may take longer the farther the device is from the logger.
Wetted Materials
Epoxy case, Santoprene (TPE) boot
Dimensions
4.06 x 6.99 x 3.51 cm (1.6 x 2.75 x 1.38 inches)
External temperature sensor diameter: 0.53 cm (0.21 in.)
External sensor cable length: 2 m (6.56 ft.)
Weight
70.0 g (2.47 oz.)
Environmental Rating
IP68