Logtag TREL-8 Dry Ice External Probe Logger


If the life of the logger is critical when monitoring ultra low-temperature environments, TREL8 loggers with an external sensor are an economical alternative. It will last for 2 years assuming a 15 minute logging interval and once a month download. A red alert LED indicator provides a visual indication when there is a temperature excursion. A special feature in the logger, if activated, stores temperature data even if the logger start button has not been pressed. Using LogTag download interface and LogTag Analyser software, the recorder can be easily configured for recording temperatures and can also be used to download recorded data. The software also allows for analysis of downloaded data by viewing it as a graph or a table.

  • External sensor
  • Rated for 2 years assuming a 15 minute logging interval and once a month download
  • Pre-Start Feature if activated guarantees temperature data even if the logger has not been started
  • Memory capacity of 8000 data points
  • Blinking Red LED for alert indication
  • Free software to configure and download/print data

With recorder case sitting in environmental temperature between 0°C ~ 50°C :-
Better than ±1°C for -30°C~ +20°C
better than ±1.2°C for -45°C~ -30°C & +20°C~+40°C
better than ±1.7°C for -80°C~-45°C
Battery life
2 ~ 3 years of normal use (based on 15 minute logging, download data monthly.
8032 readings (16K bytes memory)
Case Material
Download Time
Typically with full memory (8000 readings) in less than 5 secs depending on computer or readout device used.
Logging start options
Push button start or specific date & time.
Other features
  • Logging start by push button or specific date/time start
  • Optional clearing of alert indication by push button (places inspection make at same time)
  • Download inspection mark recorded in LogTag memory every time LogTag is downloaded
  • 'Prestart' fail-safe logging (records temperature data even if not started)
  • Low Battery indication in software
  • Comprehensive Alert indicator configuration
  • Calibration to achieve higher accuracy possible
Power source
3V Lithium battery
Recorder operating temperature range
-30 ~ +70°C (-22°F ~ 158°F)
Recording indication
Flashing 'OK' indicator flashing 'Alert' indicator.
Remote Sensor Cable Type
PTFE/FEP (FDA food contact rated) coaxial
Remote Sensor Measurement Range
-80 ~ +40°C (-112°F ~ +104°F)
< than 0.1°C for -80°C ~ 0.0°C,
< than 0.2°C for 0.0°C ~+20°C
< 0.5°C for +20°C ~+40°C (see below)
Sampling frequency
adjustable, 30 sec to several hours
Sensor reaction time
T90 typically less than 2 minutes in moving air (1m/s) for ST10S type..
Standard remote sensor cable lengths

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