Siemens SITRANS FUH1010PVDX, Руководство по эксплуатации, Страница: 157 / 308

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CQO:1010PVXFM-3 Section 5
The table may contain up to 32 pairs of these slope correction factors. Note that the Kc factor, unlike
these slope correction factors , is entered as a signed percent change in rate, while these factors are
simply rate multipliers. As points are entered, the point editor will provide list access to the already
entered points plus access to the [New Point] menu cell, used to add a new point. The table may be
created in its entirety and then activated by selecting [Yes] in the [Table Active] menu cell. The entire
table may be cleared by selecting [Yes] in the [Clear Table] menu cell.
Note that the meter allows you to use [Aux] as an [Index Variable] input. Effectively you may slope
modulate the meter’s output based on the value of a 4 - 20 mA input signal. Also notable, the interaction
between the Liquid Table, described elsewhere in this manual, and the calibration table(s) is extremely
powerful. Since the table of slope correction coefficients resides between the meter’s internal flow
register(s) and the flow register, which actually provides reports to the user, poorly formed or defective
Calibration Tables may severely impact the performance of the instrument. Take precautions before
enabling these calibration tables. Although we recognize that it is unlikely that all three tables would ever
be employed in a real installation, three tables are offered for maximum user flexibility. Since the tables
can be disabled without being destroyed, 2 or 3 optimization strategies may be tested by this means in
order to determine which approach is most effective.