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LogTag® UTRED-16F Multi-Use Logger with Display 

LogTag® UTRED-16F Multi-Use Logger with Display 


The LogTag® UTRED-16F is an affordable & reliable USB temperature recorder, measures and stores real time temperature readings over a measurement range of -40°C to +99°C (-40°F to 210°F).

Product Summary

The LogTag® UTRED-16F comes with advanced temperature recorder features of 16,000 log memory and can be used with all external probes from the ST100 range,and the extension cable. It complies with relevant international standards for temperature monitoring devices, such as FCC, CE, IC and RCM.


  • Records temperature from -40°C to +99°C
  • Up to 16,000 recordings - enough for 168 days at 15 minute logging
  • Read current temperature and latest Min-Max temperature at a glance
  • Display showing temperature and alarm status of up to six alarms
  • Automatic generation of a PDF report as a permanent record of the data
  • Measure and store up to 16,000 time/temperature readings
  • Can be connected to any computer with a USB port. No interface cradle required
  • Fixed battery of 1 year storage, 2 years of normal use.
  • Creates a comprehensive data file compatible with LogTag Analyzer operating software
  • Auto-pause function suspends alarm and statistic processing when the external sensor is unplugged

External Probes

Technical Specifications

Model UTRED-16F (Fixed Battery).
Sensor Measurement Range -40 °C to + 99 °C  
Operating Temperature Range -30 °C to +60 °C
Storage Temperature Range 0 °C to +40 °C
Rated Temperature Reading Resolution Better than 0.1°C (0.2°F) for -30°C to +60°C (-22°F to +140°F) 
Better than 0.2°C (0.4°F) for -40°C to -30°C (-40°F to -22°F)
Better than 0.5°C (0.9°F) for +60°C to +99°C (+140°F to +210°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 (±0.9°F) for -20°C to +40°C (-4°F to +104°F), typically ±0.3°C (0.6°F).
Better than ±0.8°C (±1.4°F) for -40°C to -20°C (-40°F to -4°F), typically ±0.5°C (0.9°F).
Better than ±0.8°C (±1.4°F) for +40°C to +70°C (+104°F to +158°F), typically ±0.7°C (1.3°F). 
Better than ±1.2°C (±2.2°F) for +70°C to +99°C (+158°F to +210°F), typically ±1°C (1.8°F)
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 values.
Sampling Interval Configurable from 30 seconds to 18 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
Alarms Three configurable upper and three configurable lower alarms.
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 (Fixed battery)
Battery life 1 year storage, 2 years of normal use (based on 15 minute logging, download data monthly).
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).
Size 93mm(H) x 54.5mm(W) x 8.6mm(T) including protective USB cap.
Weight 39 g
Case Material Polycarbonat
PDF-Report One page report with trip and alarm summary. Multi-page report with list of readings, including date and time.
Connection Interface USB 2.0, A-type plug.
Software PDF Reader, LogTag® Analyzer 3.1.9 or higher.
®LogTag® Recorders reserves the right to change this product’s specifications without notice.
RoHS Directive

The RoHS Directive stands for "the restriction of the use of certain hazardous substances in electrical and electronic equipment". This Directive bans the placing on the EU market of new electrical and electronic equipment containing more than agreed levels of lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyl (PBB) and polybrominated diphenyl ether (PBDE) flame retardants

FDA CFR21 Part 11 Compliance

Designed for FDA CFR21 Part 11 Digital signatures..

EMC Compliance

Tested & complies with EC EMC directives (EN 50081-1:1992 & EN 61000-6-1:2001).
Tested & complies FCC Part 15 Subparts A & B.