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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.
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The HOBO TidbiT MX2205 is ideal for monitoring shallow waters, like streams and wetlands, or for monitoring soil in fields that are prone to flooding. Equipped with both an internal sensor to monitor ambient temperature and an external sensor on a 2m cable to accurately monitor fast-changing temperatures, the HOBO TidbiT Mx2205 is a low-cost, easy-to-use, waterproof logger that leverages the power of Bluetooth to deliver high-accuracy data straight to your mobile device or Windows laptop running Onset’s free HOBOconnect app. This rugged logger withstands harsh environments, and can be deployed just above water or soil for quicker, more convenient data downloads that don’t require pulling up the logger.
Features
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Specifications
| Temperature Sensor | |
| 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 |
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