On rare occasions, you may receive a message during configuration that a logger has a damaged calibration.
We are aware of an issue that affects a small number of TRED30-16R, TREL30-16 and TRID30-7 loggers when used with an LTI-HID interface.
If you encounter this issue, please download this repair tool from here.
Close LogTag Analyzer. Download the tool, extract, and start it.
Cradle the LogTag logger with the damaged calibration and click on the "Start repair" button. Once the repair is completed, the text "LogTag repaired" will be displayed.
If you encounter any issues during the repair, please send us an email for further support.
LogTag data loggers carry unique serial numbers, and can therefore be calibrated*. We recommend calibration is done by an laboratory that can provide traceable calibrations,
LogTag loggers can also be adjusted. For this, you need to use LogTag Calibrate software, LogTag's proprietary adjustment software. LogTag Calibrate is free for calibration laboratories, however, it is restricted to approved users who have suitable equipment and credentials relating to standard practices of Temperature and/or Humidity calibration.
If you require calibration of your logger, please contact your local supplier.
Calibrate after a battery change
Loggers that had their case opened have potentially been exposed to electrostatic or other damaging effects.
Such loggers should be validated for correct operation and performance after the battery change, preferably by re-calibrating the unit, where ideally the product should be exposed to its full temperature measuring range.
Logger calibration certificates
Calibration certificates for factory-new loggers can be obtained directly from LogTag Analyzer. Please see here for instructions.
If your logger was calibrated by an external laboratory, please contact that laboratory for information.
* External probes must be calibrated together with a logger to form a calibrated bundle
You can view, download and print calibration certificates for your loggers directly from LogTag Analyzer 3.
Calibration certificate issue
Calibration certificates are valid for 12 months from the date of first configuration, or the first temperature recorded, whichever is the earlier.
The last possible issue date for a certificate is 18 months from the date of manufacture of the unit, which accounts for 6 months of storage at our warehouses, and a further 12 months storage at the client's premises.
If a logger has been first configured more than 18 months after its manufacturing date, the certificate will show the date of issue as 18 months after its manufacturing date.
Calibration certificate availability
Calibration certificates are only available in the software if the logger was manufactured after April 2019.
You must use the logger solely with LogTag Analyzer 3. If you or someone else have configured a logger first with LogTag Analyzer 2 before using it with LogTag Analyzer 3, a certificate will not be available.
Calibration certificates are also not available for vaxtag loggers, or for indicator products TIC20, TICT and iS0ºTag.
If you have requested a calibration from a lab, and the lab has adjusted the logger, the factory calibration certificate will no longer be available. The 'Certificate of calibration' button will be inactive.
If your logger was calibrated by an external laboratory, but they did not adjust the logger, LogTag Analyzer will still show the original (now expired) calibration certificate. You can ask your laboratory to invalidate this certificate (your laboratory will know how to do this) so it will no longer show, but you cannot view the new certificate in LogTag Analyzer.
Which version of software do I need?
The availability of certificates was first introduced in LogTag Analyzer 3.1r6. Generally, if a logger was first configured with this or a later version, the software will allow you to print a certificate, however, printing is reduced to the period for which the certificate is valid. You will also not be able to see a certificate, if you activated the logger later than 18 months from date of manufacture.
A change to the availability of certificates was made with the introduction of LogTag Analyzer 3.1r12. If you first configured your logger with this version, the date for which a logger's certificate is available has increased, as has the period in which a logger must be activated to be able to see the certificate, however, the general rules for the validity of the certificate have not changed.
Calibration certificates can be viewed:
in LogTag Analyzer 3, in the LogTag Configure window (after it has been configured once):
in the LogTag Analyzer 3 Report tab when viewing a file or downloaded the logger:
What to do if you cannot click the Certificate button?
If you cannot click the button, and you cannot retrieve the certificate, you should try the following (note that this process triggers the 12-month validity for the certificate):
1. Configure the logger (click LogTag - Configure, or press F3, the click Configure from the Configuration screen).
2. Once configured, click Restart. The certificate should now be available.
If you still cannot see a certificate, and you believe one should be available, contact LogTag for technical support, they can assist with providing a certificate.
Chemical vapors or pollutants
Exposure of the internal sensor to chemical vapors or high levels of pollutants may interfere with the internal sensor and cause a shift in both offset and sensitivity, resulting in inaccurate readings to be logged. This includes chemical hand sanitizers and other cleaning products. High levels of pollutants may cause permanent damage to the humidity sensor’s polymer.
Optimal Storage Conditions
For optimal Humidity logger storage, store units in original packaging in an air conditioned area. Storage temperature shall be in the range of 10°C to 50°C and humidity at 20 to 60%RH. Ensure good ventilation (fresh air supply) in storage area to avoid high concentrations of volatile chemicals. Do not store units in the same room as solvents or any other strong smelling products.
Re-conditioning Procedure
Exposure of the internal sensor to chemical vapors may interfere with the internal sensor and cause inaccurate readings to be logged. In a clean environment, this will slowly rectify itself. However, exposure to extreme conditions or chemical vapors will require the following reconditioning procedure to bring the internal sensor back to calibration state.80°C (176°F) at<5%RH for 36 hours (baking) followed by 20-30°C (70-90°F) at>74%RH for 48 hours (re-hydration) High levels of pollutants may cause permanent damage to the internal senso
The Long Term Drift of LogTag's Humidity Loggers, UHADO-16, HAXO-8, HASO-8) is typically less than 0.25% RH and less than 0.02°C per year when operating in the normal relative humidity and temperature range (0 - 65°C, 10-80%RH).
The long term drift value may be higher in environments with vaporized solvents, out-gassing tapes, adhesives, packaging materials, etc.
Where long term high accuracy is required, an appropriate calibration schedule should be set up and the unit calibrated by a laboratory for humidity measurement.
The contacts are isolated from the critical internal component such that incidental static discharge will not harm the Logger. Deliberate application of a full mains voltage (100˜240 volts AC or 12˜24 volts DC) to the Logger, however, will cause permanent damage.
Although we have no test data or specifications for the components used in a Logger it seems generally accepted that CMOS semiconductor components may have marginal performance above 5 kilorads of Gamma radiation dose. Typically most commercial (i.e non rad-hardened) electronics will fail for doses greater than 10-50krad. Depending on the intensity of the radiation the failure could be just a memory corruption, temporary loss of function or permanent damage/loss of function.
Providing metal shielding for the logger (such as a lead container) will lessen the impact of the radiation.
Loggers are not rated for direct immersion into any liquid. Only the stainless steel tip of the external sensor is suitable for immersion. A waterproof enclosure is available for some models. TREX, TRED and TREL models are fitted with an External Sensor.
We also recommend to hang your Logger vertically using the lug hole. This will allow any water or moisture to drain out of the unit.
For more specific information, check your user guide on the logger's product page for the IP rating.
LogTag Recorders do not operate any return or recycling programme. The cost of recovering components exceeds the cost of replacement by far. Loggers which have reached the end of their working life should be disposed of in accordance with local regulations.
Please contact your local distributor, who may operate a recycling, rental or leasing system.
The best way to clean your Loggers is with Isopropyl alcohol. This disinfects the Loggers. An exception is the HAXO-8; for this Logger, the alcohol may cause damage to the sensor. Please note LogTag products can be wiped with isopropyl alcohol but must not be immersed in alcohol or any other solution.
Clorox cleaning solution or any bleach-based cleaning solution is not approved or recommended.
CLEANING CONTACTS
If you have an Logger that works together with the interface cradle, make sure that the three metal contacts at the back of the Logger are clean and free from tape residue, dirt or other contaminants, as these usually result in communications problems. If required, clean them with a soft pencil eraser, but don’t use abrasive materials as you may permanently damage them. The images below show the differences between clean and dirty contacts.
Dirty contacts
Clean contacts
If you need the (configure/download) password of your Logger, please send the diagnostics file to your LogTag supplier, who will retrieve it for you.
If you do not know who your supplier is, please send the diagnostics file to LogTag and we will retrieve it for you.
The number 1 reason for this error is the use of an incorrect probe.
The probes for TRED30-16R and TREL30-16 loggers are not interchangeable.
TRED30-16R loggers have a blue front label and are only compatible with the ST100 probes, which have a blue sleeve.
TREL30-16 loggers have a turquoise front label and are only compatible with the ST10 probes, which have a green sleeve.
For either logger, you must use the correct probe that is compatible with the logger, or the temperatures on the display and in the downloaded data will be incorrect.
If for some reason the color sleeve on the sensor has detached, you can identify if you have the correct probe with a simple test at room temperature. Correct and incorrect temperatures are shown below.
| TRED30-16R room temperature, approx 25 ºC |
TREL30-16 room temperature, approx 25 ºC |
|
| ST100 probe |  25 ºC |
 -30 ºC |
| ST10 probe | 84 ºC |
25 ºC |
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