MP Filtri ICM, Руководство пользователя

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Settings 29
12.1 General
Some general information about the connected ICM unit is available. The Iden-
tification shows the ICM serial number and software version. The serial number,
together with the test timestamp, uniquely identify the test record. These two pa-
rameters are the ones used to avoid duplication of test records.
Current Time shows the time set on the ICM. It is important that this is correct
since this is used to timestamp the tests. Pressing the Set button automatically
synchronises the ICM time to that on the computer.
The
calibration area displays the date last Calibrated and the next Calibration Due
date.
12.2 Test Number
The Test Number can be used to help identify a test within a sequence. However
it is automatically reset when the ICM is powered up, so instead relying on the
timestamp (date and time of test) and test reference is preferred.
12.3 Test Duration
The length of the test is controlled by the Test Duration .
The factory set value of 2 minutes is suitable for most applications, but the user is
free to set a different value. Shorter times will make the ICM more responsive to
short-term fluctuations in contamination level. It will also result in less consistent
results for the large particle sizes and clean systems, due to statistical fluctuations
in the number of particles counted.
Longer tests will allow more "even’’ results in very clean systems and for the larger
particle sizes, since there will be a larger total number of particles counted during
the test. This means that any fluctuations have less of an effect on the test result.
12.4 Result Display
Use the selector to choose the preferred display Format (ISO, NAS etc). This selec-
tion is not just cosmetic since it also determines how the cleanliness alarm targets
are to be interpreted, if these are used.