HOBO TidbiT MX External Temp Data Logger MX2205

Bluetooth logger with external sensor

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.

Overview

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

Fast temperature-response time (20 seconds)	External temperature sensor, plus internal sensor for ambient temp monitoring
±0.2°C (±0.36°F) accuracy	Large memory stores 96,000 measurements
3-year battery life (Bluetooth on); 5-year battery life (Bluetooth off)	LED indicates when temperature exceeds set threshold
Two mounting tabs for use with screws or zip ties ensure secure deployment	Convenient wireless setup and download via Bluetooth
Works with Onset’s free HOBOconnect app

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.)

MAECENAS IACULIS

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