Comet U0110, Руководство пользователя

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IE-LGR-Uxxxx-16
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Positioning of humidity sensors:
The positioning of humidity sensors depends again on the application
requirements. Humidity measurements in refrigerators without
additional humidity stabilization can be very questionable. When
the cooling is switched on/off, there may be significant changes
in humidity in the range of tens of percent, even if the mean value is
correct. Moisture condensation on the ventricle walls is common.
Recommendations for metrological checks _____________
Metrological verification is carried out according to the requirements of
the particular application at intervals fixed by the user. In some cases,
calibration must be performed by an independent laboratory that is
accredited by the government.
Recommendations for regular checks _________________
It is recommended to check the system in which the instrument is
incorporated at regular intervals. Checking interval and inspection
scope depend on the particular application and the user’s internal
regulations. In fixed installations following checks are recommended
to be performed:
•
Metrological verification;
•
Regular checks fixed by the user;
•
Judgement of all problems that has occurred since the last check;
•
Visual check of the device, connectors condition, cover integrity;
•
Functionality check (checking of features utilized by the application):
a) Check of the transfer of the actual recorded value into the
computer, record evaluation
b) Functionality check of individual alarms. This should be done
by changing the input quantity to give rise to an alarm. Then
check it visually on the display.
c) Judgement of the battery condition on the display.
•
Check of the cabling. To be checked: Condition of cable
connections and cable surface integrity, proper cable routing,
no additional parallel heavy-current conductors.
•
Check of all sensors. This is to be performed visually. Check
for water ingress, check for suitable sensor location with respect to
correct measurement conditions and possible signal deteriorating
by interference.
•
The check results are to be recorded.