LogTag® TREX-8

Record temperature and humidity at little cost  Reliable, uncomplicated, credit card sized  Unbeaten value for money

The LogTag ® UTREL-16F is an affordable & reliable USB low temperature recorder, measures and stores real time temperature readings over a measurement range of -90°C to +40°C (-130°F to +104°F). The LogTag ® UTREL-16F comes with advanced temperature recorder features of a 16,000 log memory and can be used with the ST10 external probes range. It complies with relevant international standards for temperature monitoring devices, such as FCC, CE, IC and RCM.

  • Records temperature from -90°C to +40°C.

  • Auto-pause function suspends alarm and statistic processing when the external sensor is unplugged.

  • Up to 16,000 recordings - enough for 168 days at 15 minute logging.

  • Can be connected to any computer with a USB port. No interface cradle required.

  • Read current temperature and alarm condition at a glance.

  • Fixed battery of 1 year storage, 2 years of normal use.

  • Display showing temperature and alarm status of up to six alarms.

  • Creates a comprehensive data file compatible with LogTag Analyzer operating software.

  • Industry best download time - less than 5 seconds for full memory.

  • Comprehensive customization options including alarm settings, sample interval and trip duration.

  • Interchangeable External Probe with high quality gold plated connector

  • Automatic generation of a PDF report as a permanent record of the data.


    LogTag UTREL-16F

    Sensor Measurement Range

    -90°C to +40°C (-130°F to +104°F).

    Operating Temperature Range

    -30°C to +60°C (-22°F to +140°F).

    Storage Temperature Range

    0°C to +40°C (32°F to +104°F)

    Rated Temperature Reading Resolution

    0.1°C (0.2°F) for measurements -80°C to 10°C (-112°F to 50°F)
    0.2°C (0.4°F) for measurements 10°C to 20°C (50°F to 68°F) and -90°C to -80°C (-130°F to -112°F)
    0.3°C (0.5°F) for measurements 20°C to 30°C (68°F to 86°F)
    0.5°C (0.9°F) for measurements 30°C to 40°C (86°F to 104°F)

    Rated Temperature Reading Accuracy

    Better than ±0.5°C for -20°C to +10°C (-4°F to 50°F)
    Better than ±0.7°C for -50°C to -20°C (-58°F to -4°F) and +10°C to +30°C (50°F to 86°F)
    Better than ±1°C for -80°C to -50°C (-112°F to -58°F ) and +30°C to +40°C (86°F to 104°F)
    Better than ±1.8°C for -90°C to -80°C (-130°F to -112°F)

    Sensor Reaction Time

    Typically less than 2 minutes (T90) in moving air (1m/s) for ST100T, ST100H & ST100S types

    Recording Capacity

    16,129 temperature readings.
    112 days @ 10min logging, 168 days @ 15min logging. Statistics memory (for display on LCD): Max/Min values and alarm duration

    Sampling Interval

    Push button start or specific date & time. Optional start delay of up to 72 hours.

    Logging Start Options

    Push button start or specific date & time. Optional start delay of up to 72 hours

    Recording Indication

    “REC” symbol on LCD

    Download Time

    Typically with full memory (16,129 readings) in less than 30 seconds from time of insertion to availability of PDF report.
    Typically less than 10 seconds from time of insertion to availability of LTD file in LogTag® Analyzer (if configured)


    IP61 (when vertically mounted or hung with USB dust-cap in place)

    Power Source

    CR2450 3V LiMnO2 Battery (Fixed).

    Battery Life

    Storage life of 1 year before ‘start’ (if it is hibernation mode), followed by:
    2 years of normal use (based on 15 minute logging, download data monthly)

    Standard Remote Sensor
    Cable Length

    Standard: 1.5m (4’11”)
    Extended: 3m (9’10”) (Recommended maximum)

    Remote Sensor Cable Type

    PTFE (FDA food contact rated), coaxial

    Connection Interface

    USB 2.0, A-type plug.


    PDF Reader, LogTag® Analyzer 3.1.9 or higher.

    PDF Report

    One page report with trip and alarm summary. Multi-page report with list of readings, including date and time


    93mm(H) x 54.5mm(W) x 8.6mm(T) including protective USB cap


    39g (without External Probe)

    Case Material