LogTag Temperature Recorders

USB LogTag with Display and External Probe


No Reader necessary.

If you need a logger with a probe and don’t want to buy a separate Reader, this is the model for you. Features an LCD temperature display.


A$180.00A$230.00 incl. GST

10-49 $162 $207
50-99 $153 $195
100+ $144 $184

Note: Bulk pricing will be applied in the shopping cart.

Temperature Display

See the current temperature at a glance with the clear LCD display.

Visual Alerts

If the Tag logs temperatures outside the safe range you have set, the display will show a cross, giving you an instant visual notification that there has been a problem.

Easy to use

The LogTag is so simple to set up and use that you'll be an expert in no time. We have a full LogTag training program on our site

Why use an external probe?

LogTags are tough and versatile, but there are some places they just can’t go.

In particular, when logging the temperature of liquids, you will need a probe. An example might be  measuring the cooling rate of a large batch of custard.

Probes are also useful to monitor temperatures inside coolers and other containers without removing the lid.

Another use might be measuring soil temperatures. The probe is driven into the soil while the LogTag remains clean and protected above ground.

If you have any questions about whether LogTag is right for you, call us on 1300 08 20 20 or email [email protected].

LogTag External Probes

External Probes for LogTags

ST100J External Probe for LogTag

40mm tip length, ⌀3.2mm

This is the probe that goes with the LeakProof Vial

ST100K – 65mm tip length, ⌀3.2mm

65mm tip length, ⌀3.2mm

ST100L – 90mm tip length, ⌀3.2mm

90mm tip length, ⌀3.2mm

ST100S – 30mm tip length, ⌀5mm

30mm tip length, ⌀5mm

ST100T – 140mm tip length, ⌀5mm

140mm tip length, ⌀5mm



Handled with 105mm tip length, ⌀5mm


ST100B – Untipped (bare sensor).

ST100B – Untipped

Bare sensor without stainless sheath ready for fitting to custom probe assembly.

Not rated for food contact or environmentally rated.


Product Model UTRED-16F (Fixed battery)
External Sensor Measurement Range -40°C to +99°C (-40°F to +210°F)
Operating Temperature Range -30°C to +60°C (-22°F to +140°F).
Storage Temperature Range 0°C to +40°C (32°F to +104°F).
Rated Temperature Reading Accuracy 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 Resolution 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)
Environmental IP61 (when vertically mounted or hung with USB dust-cap in place).
Power Source CR2450 3V LiMnO2 (Non-replaceable 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).
Connction Interface Standard: 1.5m (4’11″). Extended: 3m (9’10″) (Recommended maximum).
Remote Sensor Cable Type PTFE (FDA food contact rated), coaxial.
Size 93mm(H) x 54.5mm(W) x 8.6mm(T).
Weight 39g (without External Probe).
Case Material Polycarbonate.
Compliance and Certifications FDA CFR21 Part 11 FCC EMC Directive CE EMC DirectivesConforms to RoHS