WIKA 45 - Manual (Page 6)

GB
6. Indicator check / 7. Indicator correction
11484498.02 06/2010 GB/D/F/E
WIKA operating instructions bimetal thermometers for HVAC 6
6. Indicator check
The check of the indicator should only be carried out in comparison with a more
accurate instrument or, if possible, with a calibrated instrument. The temperature
during the check must remain constant. Fluctuating temperatures may lead to
reading errors caused by the different response times of the probes.
For thermometers without protective sleeves, a minimum waiting time of
10 minutes, for temperature equalisation, should be observed, provided the
appropriate immersion length is adhered to.
Attention: Only gaseous pressure-free media are admissible!
For thermometers with protective sleeves, a minimum waiting time of at least
15 minutes, for temperature equalisation, should be observed, provided the
appropriate immersion length is adhered to.
Admissible working pressure at the pocket: max. 6 bar
7. Indicator correction
Any interference with or modification to the instrument will invalidate
the warranty!
■ The indicator correction built into the bottom of stem should only be operated
using a screwdriver, and only if the thermometer has been damaged due to
improper handling, severe shocks, during transport, etc.
■ When correcting an indication error using the adjustment mechanism, a
calibrated thermometer must be used for comparison. Subsequently, the
thermometer must be checked at several temperature points.
1) not for clip-on thermometer model A46.11 and edgewise panel design
model TF-01-058KF-BI