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LogTag® UTREL30-16 Recommended Vaccine Monitoring Logger

LogTag® UTREL30-16 Recommended Vaccine Monitoring Logger

30 Day Low Temperature Logger with Display

The LogTag® UTREL30-16 is a 30 day logger with display, the recommended vaccine monitoring logger. This Temperature Recorder measures and stores up to 16,129 temperature readings in a measuring range from -90 °C to +40 °C via the external sensor. Enough for 67 days at 6 minute logging.



Temperature measurement where access requires a remote probe and data needs to be accessed without a PC. The LogTag UTREL30-16 provides the facility to create a detailed PDF report without need for extra accessories and proprietary software only with the supplied USB cable.


Product Summary

The display is designed to show ‘at a glance’ if temperature excursions have occurred during the current day and up to the previous 29 days. The display also shows the current temperature reading, the current time, recording status and battery status.

The alarm is triggered if temperature readings are outside pre-set alarm limits. The status indicator changes from a ✔ to a X,the red LED is flashing and, if configured, the audible alarm will sound. The day marker will also appear if not already present. The alarm status indicator and audible alarm can be easily cleared, but the day marker remains to ensure a visible record of excursions is shown on the display. A simplified alarm clearance, stop & start procedure is available as an option.

Details of any excursion in the preceding 30 days can be checked directly by inspecting the statistics history on the recorder’s display or in more detail by downloading the logged data via a micro-USB cable to LogTag® Analyzer operating software.


Product Highlights

  • Read Current temperature and latest Min-Max temperature at a glance.
  • Audible alarm and flashing red LED signals a temperature alarm.
  • View alarm status for up to 29 days at a glance.
  • Power supply via USB power supply or USB cable and alternatively also via 2 microcells (AAA) as independent backup supply
  • Can be powered via a standard plug-in power adaptor and a USB cable.
  • Download data via LogTag Analyzer or as a PDF (no software required).
  • Measure and store up 16,000 time/temperature readings – enough for 67 days at 6 minute logging.
  • Interchangeable external probe with high quality gold-plated connector.
  • Inspections  can be recorded at the push of a button.
  • Auto-pause function suspends alarm and statistic processing when the external sensor is unplugged.

Automatic PDF Report

The UTREL30-16 connects to a computer USB port for easy configuration by the user for a wide range of recording and alert conditions. Upon download, it automatically generates a fully detailed PDF report with the option to download the data using the freely available LogTag®Analyzer software for a more detailed analysis. 

External Probes

Technical Specifications

Product model UTREL30-16
Sensor measurement range -90 °C to +40 °C
Recorder operating temperature range -30 °C to +60 °C
Storage Temperature Range 0 °C to +40 °C
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)
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)

Sensor Reaction Time

Typically less than 2 minutes(T90) in moving air (1m/s) for ST10S type

Recording capacity 16,129 temperature readings. 67 days at 6 min logging.
Day summary statistics memory (for display on LCD): up to 30 days of Min/Max/duration and alarm trigger statistics
Sampling Interval Configurable from 30 seconds to 18 hours
Logging start options Push button start (with configurable start delay from 1 minute to 72 hours) or specific date & time
Download time Typically with full memory (16,129 readings) in less than 10 seconds
Environmental IP51 (when vertically mounted or hung with USB dust-cap in place)
Power source 5V via micro USB socket or, 2 x 1.5V AAA alkaline batteries. CR2032 LiMg coin cell (backup logging function only)
Battery life AAA 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 Lengths 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 / Micro USB plug
Size 141 mm(H) x 72 mm(W) x  18 mm(T)
Weight 156g with AAA batteries, (132g - excluding probe and AAA batteries)
Case Material Polycarbonate
LogTag® Recorders reserves the right to change this product’s specifications without notice.