$99.00 incl. GST
Log temperatures inside fridges, freezers, coolers, and in liquids.
See at a glance if the logger has experienced any out-of-range temperatures
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.
LogTags are tough and versatile, bu 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].
| Product Model | TREX-8 |
| External Sensor Measurement Range | -40°C to +99°C (-40°F to +210°F) |
| Operating Temperature Range | -40°C to +85°C (-40°F to +185°F). |
| Storage Temperature Range | -10°C to +55°C (14°F to +131°F). |
| Rated Temperature Reading Accuracy | Better than ±0.5°C for -10°C to +40°C. Better than ±0.7°C for -10°C to -30°C and +40°C to +60°C. Better than ±0.8°C for -30°C to -40°C and +60°C to +80°C. Better than ±1.0°C for +80°C to +99°C. Actual performance is typically much better than the rated values. Please see the Rated Absolute Accuracy chart below. Accuracy figures can be improved by recalibration. |
| Rated Temperature Reading Resolution | Less than 0.1°C for -40°C to +40°C. Less than 0.2°C for +40°C to +80°C. Less than 0.6°C for +80°C to +99°C. Please see the Rated Native Resolution chart below. LogTag Analyzer® currently displays to one decimal place of °C or °F. The native resolution is what is stored in the LogTag®. |
| Sensor Reaction Time | Typically less than 2 minutes (T90) in moving air (1m/s) for ST100T, ST100H and ST100S types. |
| Recording Capacity | 8031 temperature readings. 53 days @ 10min logging, 80 days @ 15min logging. |
| Sampling Interval | Configurable from 30 seconds to several hours. |
| Logging Start Options | Push button start or specific date & time. Optional start delay of up to 18 hours. |
| Recording Indication | Flashing ‘OK’ indicator / flashing ‘ALERT’ indicator. |
| Download Time | Typically less than 5 seconds for full memory (8031 readings), depending on computer or readout device used. |
| Environmental | IP61. |
| Power Source | 3V Li-Mg Battery. |
| Battery Life | 2 – 3 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). |
| Standard Remote Sensor Cable Length | Standard: 1.5m (4’11″). Extended: 3m (9’10″) (Recommended maximum). |
| Remote Sensor Cable Type | PTFE (FDA food contact rated), coaxial. |
| Size | 86mm(H) x 54.5mm(W) x 8.6mm(T). |
| Weight | 36g (without External Probe). |
| Case Material | Polycarbonate. |
| Compliance and Certifications |
|
To use this LogTag, you will need a USB interface and the LogTag Analyzer software installed on your PC. This LogTag uses the same Reader as other LogTags, so if you already have one, it will work with these models. If not, make sure you order one as well.
Temperature range: -40°C to +99°C
Type J (ST100J)
40mm tip length, ⌀3.2mm
This is the probe that goes with the LeakProof Vial
Type K (ST100K)
65mm tip length, ⌀3.2mm
Type L (ST100L)
90mm tip length, ⌀3.2mm
Type S (ST100S)
30mm tip length, ⌀5mm
Type T (ST100T)
140mm tip length, ⌀5mm
Type H (ST100H)
Handled with 105mm tip length, ⌀5mm
Type B (ST100B – Untipped)
Bare sensor without stainless sheath ready for fitting to custom probe assembly.
Not rated for food contact or environmentally rated.
If you need some form of certification about the accuracy of your logger, you have various options.
This is a free certificate that comes with every LogTag. You can access this certificate through the configuration page in LogTag Analyser.
This paid certificate is from a laboratory that uses testing instruments that have been calibrated using NATA-traceable instruments.
This paid certificate is from a laboratory that has full NATA certification.
Before you can start using a new logger, you will need to configure it with all the settings appropriate to what you are logging.
This is not difficult, and we have instructions on how to do it on this website, but if you would prefer us to do it for you, that service is available at a small cost.
We can pre-configure your LogTag with our recommended settings for:
This means, all you will need to do when you receive your LogTag, is press the Start button and place it in the environment to be monitored.
Latency, when it comes to temperature logging, refers to the delay between a change in temperature and when that change is detected and recorded by the logger. This delay can be due to the sensor’s design, the materials it’s placed in, or the logging interval. While it might sound like a disadvantage, latency can actually serve a useful purpose in certain environments—particularly where short-term temperature spikes are common but not harmful.
For example, in a busy commercial fridge, the temperature may briefly rise every time the door is opened. A logger with high latency won’t immediately react to these short fluctuations, helping to avoid unnecessary alarms or false data indicating a problem when there isn’t one. In these cases, a slight delay in response acts like a filter, focusing attention on real issues—such as prolonged exposure to unsafe temperatures—while ignoring the everyday ups and downs that don’t affect product quality or safety.
Depending on the type of logger you have, connecting your logger to your PC means either:
First Generation LogTags use a separate Reader (sometimes called a dock) for configuration and for downloading recorded data.
The Second Generation loggers only require a USB port or cable. Apart from saving the cost of the Reader, this makes them much better suited for shipping, because the recipient doesn’t need a LogTag Reader to download a report about the shipment’s journey.
