How can the Veriteq system save so much time on pre and post-calibration?
The primary reason is system and sensor stability. Veriteq data loggers use thermistor technology, which is much more stable than thermocouples. This stability allows operators to extend the time between calibration checks. As an example, one survey respondent explained, "When I use Veriteq loggers to qualify 20 refrigerators, I 'll do them one after another - without any post-calibration until the end. This is because I know from experience that the Veriteq loggers will still be in spec. But not so with thermocouples. They "drift", so I must perform pre-and post-calibrations every two to three refrigerators - otherwise I end up failing post-calibration and having to redo the entire test."
How can the Veriteq system save so much time during sensor placement and removal?
Being wireless, Veriteq data loggers can be easily and quickly placed in chambers or rooms. There are no thermocouples or power cables to deal with - simply position the loggers in place and they are ready to record data. Contrast this to stringing thermocouples wires from a central unit and trying to keep all the wires organized, untangled, and free from physical damage.
If the Veriteq system saves so much time, why are some people still using thermocouple based systems?
For some time now thermocouple based systems have been the standard for thermal validation, and for that reason many companies still cling to the comfort of tradition - they already own the equipment and are familiar with using it. Consequently, they see little reason to change.
However, in Veriteq's experience, many organizations are still using thermocouple systems only because they are not aware that there are better alternatives. In this regard, Veriteq Marketing Manager Rick Schellenberg comments on Veriteq's success with wireless data loggers: "About five years ago we first saw the Validation Service Firms buying our product. For many of them it provided a competitive advantage, and still does (i.e. they can perform jobs in less time at a lower cost). In more recent years we have also seen a rapid adoption from the pharmaceutical companies as their in-house validation departments have discovered the substantial time savings that are available."
What about mapping large warehouses?
Thermocouple systems are typically not used in warehouse mapping applications due to the difficulty, obtrusiveness, and cost of stringing wires across large areas. For this type of application, wireless data loggers are the standard.
What about mapping for relative humidity?
According to survey respondents, thermocouple validation systems were not considered well-suited for relative humidity mapping applications - thus making a comparison between the two systems on this point impractical. The primary reasons cited were the costs associated with procuring, setting up, and using a set of additional humidity sensors.
In contrast, Veriteq data loggers, which typically include both types of sensors, allow operators to fully map a space for both temperature and humidity - without any additional setup costs.
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Survey Results