A customer needed to measure temperatures in an immersion tank with an accuracy of ±0.3 °C. The standard probe had an accuracy of ±0.31 °C, exceeding the requirement. Testo AG customized the probe by replacing its sensor with a more precise one, achieving an accuracy of ±0.07 °C. With the instrument's accuracy of ±0.2 °C, the customized probe provided a system accuracy of ±0.27 °C, meeting the customer's needs through a tailored probe solution.

1. We measure it.
Customised probes
for your application
The application The solution
Accuracy Customisation
In a laboratory, temperatures with an accuracy of ±0.3 °C Since the accuracy of the immersion/penetration probe is
need to be carried out in an immersion tank. The temperature insufficient, in order to fulfil the customer’s needs Testo AG
of the water in the immersion tank must be tested in order to manufactures the probe exactly to customer requirements:
ascertain whether it is actually 80 °C. The temperature the sensor (Pt 100, class A) is replaced by a sensor that is
measuring instrument testo 735 will be used for this. At the more precise (Pt 100, 1/10 class B). The customized
prevailing temperature of 80 °C, this instrument immersion/penetration probe 0609 1273 now has
has an accuracy of ±0.2 °C. In order to guarantee an accuracy of ±0.07 °C at a temperature of
a system accuracy (sum of instrument and probe +80 °C. At a temperature of +80 °C, the system
accuracy) of ±0.3 °C, the temperature probe accuracy is ±0.27 °C. The requirements for the
should have a deviation of ±0.1 °C maximum. The measurement equipment could be met thanks to
waterproof immersion/penetration probe, item the replacement of the sensor. The customer gets
number 0609 1273, will be used for this a probe that is tailored specifically to his/her
application. It has an accuracy of ±0.31 °C as application.
standard. Consequently, the system accuracy is
±0.61 °C.
More info Testo Limited
Newman Lane, Alton, Hampshire, GU34 2UR
For detailed information and answers to your queries relating to Tel 01420 544433
E-mail info@testo.co.uk
customised probes, please contact our experts on 01420
544433 or visit www.testolimited.com