LogTag UTREL-16F Ultra-Low Temperature Data Logger
The LogTag UTREL-16F is a reusable external probe data logger for monitoring ultra-low temperature freezers, cold storage equipment and temperature-sensitive products.
Compatible ST10 probes measure temperatures from -90°C to +40°C, while the recorder remains outside the monitored environment. Its display provides immediate access to the current temperature and alarm status, and its built-in USB connector generates automatic PDF reports.
- External probe monitoring from -90°C to +40°C
- Stores 16,129 time-stamped temperature readings
- Built-in USB with automatic PDF reporting
Ultra-Low Temperature Monitoring
Monitor ULT freezers, cold storage equipment and temperature-sensitive products at temperatures down to -90°C.
Accessible Display
Keep the recorder outside the monitored space and review the current temperature and alarm status at a glance.
Automatic PDF Reports
Connect the logger directly to a computer to generate a permanent PDF report without requiring an interface cradle.
Multiple Alarm Levels
Configure three upper and three lower alarms to distinguish between different temperature limits and excursion conditions.
The UTREL-16F is designed for ultra-low and low-temperature applications where the sensing probe must remain inside the monitored space while the recorder stays accessible.
Typical applications include:
- Ultra-low temperature freezers
- Pharmaceutical and vaccine storage
- Biological sample storage
- Biobanks and research laboratories
- Healthcare and clinical facilities
- Cold rooms and refrigerated storage
- Chemical storage
- Temperature-controlled transportation
- Laboratory freezers
- Cryogenic and low-temperature processes
A silica sand buffer assembly is recommended when monitoring temperatures below -40°C.
The UTREL-16F combines ultra-low temperature measurement with an accessible display, configurable alarms and direct USB reporting.
- External probe measurement from -90°C to +40°C
- Compatible with LogTag ST10S and ST10M probes
- External probes available with different tip and cable configurations
- Memory for 16,129 temperature readings
- Up to 112 days of data at 10-minute intervals
- Up to 168 days of data at 15-minute intervals
- Configurable sampling intervals from 30 seconds to 18 hours
- Push-button or scheduled recording start
- Optional start delay of up to 72 hours
- Three configurable upper alarms
- Three configurable lower alarms
- LCD showing current temperature and alarm status
- Auto-pause function when the external probe is disconnected
- Built-in USB 2.0 connection
- Automatic generation of PDF reports
- Compatible with LogTag Analyzer
- Built-in real-time clock
- IP61-rated with the USB cap fitted
- Fixed battery providing approximately two years of normal use
A compatible ST10 external probe is required and available separately. No separate interface cradle is needed.
| Specification | UTREL-16F |
|---|---|
| External probe measurement range | -90°C to +40°C |
| Recorder operating range | -30°C to +60°C |
| Storage temperature range | 0°C to +40°C |
| Temperature accuracy | Better than ±0.5°C from -20°C to +10°C; varies outside this range |
| Temperature resolution | 0.1°C from -80°C to +10°C; varies at the extremes of the range |
| Recording capacity | 16,129 temperature readings |
| Sampling interval | Configurable from 30 seconds to 18 hours |
| Start options | Push-button or scheduled start, with an optional delay of up to 72 hours |
| Alarms | Three configurable upper and three configurable lower alarms |
| Reporting and connection | USB 2.0 with automatic PDF report generation |
| Environmental protection | IP61 with the USB cap fitted |
| Battery | Fixed CR2450 3V LiMnO2 battery |
| Compatible probes | LogTag ST10S and ST10M external probes |
| Size and weight | 93 x 54.5 x 8.6mm including USB cap; 39g |
Temperature accuracy is better than ±0.7°C between -50°C and -20°C and between +10°C and +30°C. Accuracy is better than ±1°C from -80°C to -50°C and +30°C to +40°C, and ±1.8°C from -90°C to -80°C.
Why Choose the LogTag UTREL-16F?
The LogTag UTREL-16F provides a practical way to monitor ultra-low temperatures while keeping the logger’s display and controls outside the freezer or storage space.
Its interchangeable external probes support measurements down to -90°C, while six configurable alarms provide greater control over different temperature limits and excursion conditions. The auto-pause function suspends alarm and statistical processing if the probe is disconnected.
A built-in USB connector removes the need for a separate interface cradle and automatically generates a PDF report. The complete dataset can also be opened in LogTag Analyzer for more detailed analysis and export.
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LogTag UTREL-16F Technical Brochure
Download the manufacturer’s brochure for complete specifications, compatible probe options and reporting information.
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