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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 - UTREL30-16 DUAL

The LogTag® UTREL30-16 DUAL is a 30 day logger with display, the recommended vaccine monitoring logger. This Temperature Recorder measures and stores up to 30,000 temperature readings (16,000 per channel) 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 DUAL 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 30 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.
  • Check and reset Min-Max temperature reading at any time.
  • Audible alarm and flashing red LED signals a temperature alarm.
  • View alarm status for up to 30 days at a glance.
  • Record inspections at the push of a button.
  • Measure and store up 32,000 time/temperature readings (16,000 per channel) – enough for 67 days at 6 minute logging.
  • Two socket external probe with auto channel swap function.
  • Download data via LogTag Analyzer or as a PDF (no software required).
  • Power supply via usb power supply and usb cable, alternatively by 2 batteries (AAA) (user replaceable) if not external powered.
  • Second battery backup via a coin cell to ensure no data is lost even if the power source and AAA batteries fail.
  • Accessories include a range of external sensor options, wall mount bracket, and glycol buffer.

Automatic PDF Report

The UTREL30-16 DUAL 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
External Sensor Measurement Range -90 °C to +40 °C
Operating Temperature Range

-30 °C to +60 °C

0 - 99 % rF (not condensing)

Storage Temperature Range 0 °C to +40 °C (32 °F to +104 °F)
Rated Temperature Reading Resolution Better than 0.1 °C (0.2 °F) for measurements -80 °C to 10 °C (-112 °F to 50 °F)
Better than 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 -11 2°F)
Better than 0.3 °C (0.5 °F) for measurements 20 °C to 30 °C (68 °F to 86 °F)
Better than 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 probe.
Probe Connectivity  Up to 2
Probe Compatibility All ST10 precision thermistor external probes can be interchangeably connected to the UTREL30-16 DUAL.
Please refer to the Accessories section for compatible External Probes. Different probe models can be used for each channel. Not
compatible with ST100 sensors.
Recording Capacity 32,000 total log memory. Provides 16,000 temperature readings per channel.
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. (Typically 5 minute logging)
Alarms Up to 6 individually configurable alarms for each channel.
Possible to set alarms separately for Channel 1 and Channel 2.
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 (32,000 readings) in less than 20 seconds.
Environmental IP61 (when vertically mounted or hung with USB dust-cap in place).
Power Source 5V via micro USB socket or 2 x 1.5V AAA batteries. CR2032 LiMnO2 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.
Typical 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 Probe Cable Type PTFE (FDA food contact rated) coaxial.
Connection Interface USB 2.0 / Micro USB Socket.
Size 141mm(H) x 72mm(W) x 18mm(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.