Ocean and River Instruments

Pocket-size temperature logger (DEFI2-T)

DEFI2-T
■Description
DEFI2-T is a high-precision miniature water temperature recorder for long-term observations (approx. 573 days for 1 minute interval observation). The reduced size of the DEFI2-T allows the device to be installed in large numbers in a single mooring system, allowing investigating temperature fluctuations at increased spatial resolution. Also, AAA alkaline batteries used by DEFI2-T are easily available, reducing the operating costs.

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Sensor Specifications

Model DEFI2-T
Parameter Temperature
Sensor Thermistor
Temperature range -3 to 45℃
Resolution 0.001℃
Accuracy ±0.01℃ (0 to 35℃)
Response time 12 s (90%)
Depth rating 2,000m
Consumption Approx. 30mA (during logging)
Weight 99g (in air),65g (in water) *including battery
Dimensions Φ20mm×110mm

Logger Specifications

Communication Infrared to Interface unit
Output / transfer time RS-232C, 115,200bps / Approx. 22 min (fully recorded)
Storage medium Internal flash memory (8MB)
N. of samples Approx. 820.000 samples at maximum
AD converter 16 bit digital conversion
Measurement mode Continuous
Measurement interval 1 to 59 s, 1 to 60 min
Power AAA alkaline battery
Material Titanium (grade 2) / Communication window: polycarbonate

Drawing

Drawing

*All the specifications are subject to change without notice. Please contact us for more information.

Ocean and River Instruments

  • JFE Advantech
  • Service and Support Phone:+81-798-66-1783 Fax:+81-798-66-1654
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