Water Temp TidbiT v2 Data Logger - eucatech Store
Water Temp TidbiT v2 Data Logger - eucatech Store
Water Temp TidbiT v2 Data Logger - eucatech Store


Water Temp TidbiT v2 Data Logger

Sale priceR 4,845.57



Only 3x4 cm, this tiny data logger measures temperatures over a wide range, providing 12-bit resolution and ±0.2 °C accuracy. Designed for outdoor and underwater environments, this logger is waterproof to 300 m (1000 ft). An optical USB interface lets you offload data in seconds.

Please note: A solar radiation shield is required to obtain accurate air temperature measurements in sunlight (assembly-required RS1 Solar Radiation Shield or pre-assembled M-RSA Solar Radiation Shield).

Diagram showing how an optical interface is used for retrieving data.


Quick Start
User Manual

Highlighted Features

  • Onset's smallest temperature data logger
  • Waterproof to 300 meters (1,000 feet)
  • Data readout in less than 30 seconds via a fast Optic USB interface


Temperature Sensor:

  • Operation Range:

    • -20°C to 70°C in air
    • -4°F to 158°F in air
    • Maximum sustained temperature of 30°C (86°F) in water*
  • Accuracy:

    • ±0.21°C from 0°C to 50°C, see manual for plot
    • ±0.38°F from 32°F to 122°F, see manual for plot
  • Resolution:

    • 0.02°C at 25°C, see manual for plot
    • 0.04°F at 77°F, see manual for plot
  • Response Time:

    • 5 minutes in water
    • 12 minutes in air moving 2 m/sec
    • 20 minutes in air moving 1 m/sec (typical to 90%)
  • Stability (Drift):

    • 0.1°C per year
    • 0.18°F per year


  • Real-time Clock: ±1 minute per month at 0°C to 50°C (32°F to 122°F)

  • Battery: 3 Volt lithium, non-replaceable

  • Battery Life (Typical Use): 5 years with 1 minute or greater logging interval

  • Memory (Non-volatile): 64K bytes memory (approx. 42,000 12-bit temperature measurements)

  • Weight: 19.6 g / 0.69 oz

  • Dimensions: 3.0 × 4.1 × 1.7 cm (1.2 × 1.6 × 0.68 in.); mounting bail 4.6 mm (3/16 in.) diameter hole

  • Wetted Materials: Epoxy case

  • Waterproof: Up to 305 m (1000 ft.)

  • Logging Interval: Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from 1 second to 18 hours. Refer to HOBOware software manual.

  • Launch Modes: Immediate start, delayed start, triggered start

  • Offload Modes: Offload while logging; stop and offload

  • Battery Indication: Battery level can be viewed in the status screen and optionally logged in the data file. Low battery indication in the data file.

  • Environmental Rating: IP68


In what environment does this data logger operate?

This data logger operates in outdoor and underwater environments.

What measurements does this data logger support?

The UTBI-001 data logger supports the following measurements: Temperature and Water Temperature