Technical Specifications
UTREL30-WiFi User Guide
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Technical Specifications
Model Number
UTREL30-WiFi
Temperature Sensor Measurement Range
-90 °C to +40 °C (-130 °F to +104 °F)
Operating Temperature Range
-30 °C to +70 °C (-22 °F to +158 °F)
Storage Temperature Range
-10 °C to +40 °C (32 °F to +104 °F)
Ambient humidity range during
transport, storage and use
0 to 95 %RH
Rated Temperature Resolution
0.1 °C (0.2 °F) for measurements -85 °C to 0 °C (-121 °F to +32 °F)
0.2 °C (0.4 °F) for measurements 0 °C to +18 °C (+32 °F to +64 °F) and -90 °C to -85 °C (-130 °F
to -121 °F)
0.3 °C (0.5 °F) for measurements +18 °C to +30 °C (+64 °F to +86 °F)
0.5 °C (0.9 °F) for measurements +30 °C to +40 °C (+86 °F to +104 °F)
Please see resolution chart in
Rated Temperature Accuracy
Better than ±0.5 °C (±0.9 °F) for -20 °C to +10 °C (-4 °F to 50 °F)
Better than ±0.7 °C (±1.3 °F) for -50 °C to -20 °C (-58 °F to -4 °F) and +10 °C to +30 °C (+50 °F to
+86 °F)
Better than ±1.0 °C (±1.8 °F) for -85 °C to -50 °C (-121 °F +-58 °F) and +30 °C to +40 °C (+86 °F
to +104 °F)
Better than ±1.8 °C (±3.2 °F) for -90 °C to -85 °C (-130 °F to -121 °F)
Please see accuracy chart in
Probe Compatibility
All ST10 precision thermistor external probes can be interchangeably connected to the
UTREL30-WiFi. Please refer to the page for External Probes on the LogTag Recorders website.
Sensor Technology
Precision electronic thermistor
Sensor Reaction Time
According to Probe
Clock accuracy
Quartz crystal-locked real time clock, rated accuracy ±25ppm @ 25 °C (equiv to 2.5 seconds/day)
Rated temperature coefficient is -0.034±0.006ppm/°C (i.e. typ/-0.00294seconds/day/°C)
Recording Capacity
16,129 real time temperature values, giving
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67 days @ 6 min logging;
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112 days @ 10 min logging; or
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168 days @ 15 min logging
Supports continuous logging ("wrap-around") or specific recording period
Statistics memory
For displaying statistics on the LCD
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Trip min/max values
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Max/Min values for the past 30 days
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Alarm duration values for the past 30 days
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AM/PM Inspections for the past 30 days
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Total time above/below alarm thresholds
Memory type
Non volatile
Sampling Interval
Configurable from 30 seconds to 18 hours
Start options
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Push button start with optional configurable start delay from 1 minute to 72 hours
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Date/time start up to 180 days in the future
Alarm functions
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Total of 6 alarms
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Up to 5 configurable upper alarms
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Up to 5 configurable lower alarms
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indicator on display, linked to alarms
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Alarm arrows linked to thresholds
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Red Alert LED
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Audible alarm
Vibration
Withstands vibration specification as detailed in EN12830:2018
Shock
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Withstands shock specification as detailed in EN12830:2018
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Withstands 5 drops from 1m onto smooth concrete floor without loss of function or
calibration
EMC compliance
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EC EMC directive EN 55024:2010 (Immunity)
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EC EMC directive EN 55032:2015 (Emission)
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47 CFR Part 15 Subpart B (unintentional radiator) as a Class A digital device as defined in
section §15.101
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RoHS2 Directive 2011/65/EU
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RTCA DO-160G:2010, section 21