EN
29WIKA operating instructions, models TRxx and TCxx
14150915.08 04/2024 EN/DE/FR/ES
7.3 Calibration
It is recommended to calibrate the instrument at regular time intervals. (resistance
thermometers: approx. 24 months, thermocouples: approx. 12 months). This period
can reduce, depending on the particular application. The calibration can be carried out
by the manufacturer, as well as on-site by qualified skilled personnel with calibration
instruments.
7.3.1 Instruments with removable measuring insert
(models Tx10-B, Tx10-C, Tx10-D, Tx10-F, TR10-J, Tx10-L, Tx10-0, Tx12-B,
Tx12-M, TR22-A, TR22-B, TR55, Tx81)
For calibration, the measuring insert is removed from the thermometer.
The minimum length (metal part of the probe) for carrying out a 3.1 measurement
accuracy test or DAkkS is 100 mm [3.94 in].
7.3.2 Instruments with non-removable measuring inserts or cable probes
(models Tx10-H, TR21-A, TR21-B, TR21-C, TR31, TR33, TR34, TR36, Tx40,
TR41, Tx50, Tx53, TR75)
The minimum length (metal part of the probe or the length of the probe below the
process connection) for carrying out a 3.1 measurement accuracy test or DAkkS is 100
mm [3.94 in].
7.3.3 Measuring inserts
(models Tx10-A, Tx10-K, TR11-A, Tx12-A)
The minimum length for carrying out a 3.1 measurement accuracy test or DAkkS is 100
mm [3.94 in].
7.3.4 Multipoint thermometers
(models TC94, Tx95, TC96-O, TC96-R, TC96-M, TC97)
The individual thermometers are calibrated before final assembly.
7.3.5 Flush-mounted and in-line instruments
(models TR20, TR25)
The thermometer is immersed in a liquid bath for calibration.
7.3.6 Cannot be calibrated
(models TR60, Tx90)
Standard versions of these instruments cannot be calibrated.
7. Maintenance, cleaning and calibration
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