• New large easy-to-read display.
  • Reset Min/Max temperature reading at any time.
  • Audible alarm & red LED signals a temperature alarm.
  • View alarm status for up to 30 days at a glance.

Measure and store up to 16,000 readings – enough for 67 days at 6 minute logging.

View alarm status for up to 30 days at a glance.

Auto-pause function suspends alarm & statistic processing whenu the external probe is unplugged.

The LogTag® UTREL30-16 is compatible with the ST10 external probe.


Product ModelUTREL30-16.
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 Range0°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).
Please see the Rated Native Resolution chart below.
LogTag Analyzer® currently displays to one decimal place of °C or °F. The native resolution is what is stored in the LogTag®.
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)
Sampling IntervalConfigurable from 30 seconds to 18 hours.
Logging Start OptionsPush button start (with configurable start delay from 1 minute to 72 hours) or specific date & time.
Recording Capacity16,129 temperature readings. 67 days at 6 minute logging.
Day summary statistics memory (for display on LCD): up to 30 days of Min/Max/duration and alarm trigger statistics.
Download Time Typically with full memory (16,129 readings) in less than 10 seconds.
EnvironmentalIP51 (when vertically mounted or hung with USB dust-cap in place).
Power Source5V via micro USB socket or 2 x 1.5V AAA batteries. CR2032 LiMnO2 coin cell (backup logging function only).
Battery LifeAAA battery up to 12 months – if unit is operated without power supply.
Real Time Clock Built-in real time clock.
Rated accuracy ±25ppm @ 25°C (equivalent to 2.5 seconds/day).
Rated temperature coefficient is -0.034 ±0.006ppm/°C (I.e typically +/- 0.00294 seconds/day/°C).
Standard Remote Probe Cable LengthsStandard: 1.5m (4’11”). Extended: 3m (9’10”) (recommended maximum).
Remote Sensor Cable TypePTFE (FDA food contact rated) coaxial.
Connection InterfaceUSB 2.0 / Micro USB Socket.
SoftwarePDF Reader, LogTag® Analyzer 3.1.9 or higher.
PDF ReportOne page report with trip and alarm summary. Multi-page report with list of readings, including date and time.
Size141mm(H) x 72mm(W) x 18mm(T).
Weight156g with AAA batteries, (132g – excluding probe and AAA batteries).
Case MaterialPolycarbonate.

Compliance and Certifications
FDA CFR21 Part 11 FCC EMC Directive CE EMC Directives Conforms to RoHS