HOBO MX2204 TidbiT 5000' Temperature Logger

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Overview

The HOBO MX2204 TidbiT waterproof temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver high-accuracy temperature measurements straight to your mobile device with Onset's free HOBOconnect app. Designed for durability, this rugged waterproof logger is ideal for long-term deployments in streams, lakes, and oceans. The HOBO MX2204 also provides the additional 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!

Add the MX Gateway for remote access to your data in Onset's cloud-based HOBOlink software.

Manufactured by: Onset
Model: HOBO MX2204 TidbiT 5000' Temperature Logger

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance

Applications

Soil temperature
Temperature
Water temperature

Specification

Temperature Sensor (MX2203 and MX2204)
Range MX2203: -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-4° to 122°F) in water
MX2204: -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 ±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 15°8°F)
Resolution 0.01°C (0.018°F)
Drift <0.1°C (0.18°F) per year
Response Time MX2203: 17 minutes typical to 90% in air moving 1 m/s, unmounted;
7 minutes typical to 90% in stirred water, unmounted
MX2204: 15 minutes typical to 90% in air moving 1 m/s, unmounted;
4 minutes typical to 90% in stirred water, unmounted
Logger
Radio Power 1 mW (0 dBm)
Transmission Range Approximately 30.5 m (100 ft) line-of-sight
Wireless Data Standard Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0)
Logger Operating Range -20° to 70°C (-4° to 158°F)
Logging Rate 1 second to 18 hours
Buoyancy (Fresh Water)

MX2203: 3.1 g (0.11 oz) negative
MX2204: 7.6 g (0.27 oz) negative

Waterproof

MX2203: To 122 m (400 ft)
MX2204: To 1,524 m (5,000 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)

Memory 96,000 measurements
Battery CR2477 3V lithium, user replaceable in MX2203, non-replaceable in MX2204
Battery Life

3 years, typical at 25°C (77°F) with logging interval of 1 minute and Bluetooth Always On 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 in software.
Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life.

Time Accuracy ± 1 minute per month at 25°C (77°F)
Full Memory Download Approximately 45 seconds; may take longer the farther the device is from the logger
Wetted Materials

MX2203: Polypropylene case, EPDM O-ring, stainless steel screws, Santoprene® (TPE) boot
MX2204: Epoxy case, Santoprene (TPE) boot

Dimensions MX2203: 4.45 x 7.32 x 3.58 cm (1.75 x 2.88 x 1.41 inches)
MX2204: 4.06 x 6.99 x 3.51 cm (1.6 x 2.75 x 1.38 inches)

Weight

MX2203: 36.2 g (1.28 oz)
MX2204: 32.8 g (1.16 oz)

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