HOBO MX2203 TidbiT 400' Temperature Logger

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Overview

The HOBO MX2203 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 (up to 400-foot depths). The HOBO MX2203 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!

You can download the HOBOconnect app here:

Manufactured by: Onset
Model: HOBO MX2203 TidbiT 400' Temperature Logger

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance

Applications

Soil temperature
Water temperature
Temperature

Specification

Temperature Sensor (MX2203)
Range MX2203: -20° to 70°C (-4° to 158°F) in air; -20° to 50°C (-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 (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
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
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
Waterproof MX2203: 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).

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.
To ensure proper battery installation, see Battery Information for detailed instructions on replacing the battery in the MX2203 logger.
Time Accuracy

± 1 minute per month at 25°C (77°F)

Full Memory Dowload Approximately 45 seconds; may take longer the farther the device is from the logger
Wetted Materials MX2203: Polypropylene case, Delrin® battery cover, EPDM O-ring, stainless steel screws, Santoprene® (TPE) boot
Dimensions MX2203: 4.45 x 7.32 x 3.58 cm (1.75 x 2.88 x 1.41 inches)
Weight MX2203: 36.2 g (1.28 oz)
Environmental Rating IP68

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