Toshiba Density (Consistency) Meter LQ500, Руководство по эксплуатации

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10. VARIOUS FUNCTIONS
10.1 Various Functions and their Outlines
The density meter LQ500 is equipped with various functions to be used more appropriately in
various processes and in various situations. Depending on the process being applied or the method
of using the meter, some functions may not be necessary. Based on the descriptions below, choose
the functions you need. Table 10.1.1 describes the functions equipped in this meter and outlines.
Table 10.1.1 Various Functions
Function Name Application and Outline Remarks
1) External
synchronized
operation
Perform this external synchronized operation in the event that the
pump to the pipe line on which the density mete r is installed is
operated intermittently and the object of measurement does not
flow continuously or in the event that the detector is temporarily
made empty. See Section 6.7.
2) Moving
average
Use this function in the event of requiring the averaged output to
be used for density control, etc. The function is useful for
suppressing the deflection width of the output. See Section
10.2.
3) Change-rate
limit
In the event of a sudden change in the density or a sudden
variation in the output due to intrusion by bubbles, etc., this
function is used to exclude these signals to restrain the sudden
output change. See Section 10.3
4) Electric
conductivity
correction
This function is used in the event that the electric conductivity of
the matter to be measured has changed substantially. Since this
does not usually become a real problem, it does not need this
function usually. When using this function, however, it is
necessary to separately prepare a electric conductivity meter,
install it on a proper location and input the electric conductivity
signal into the density meter. See Section
10.4.
5) Additives
correction
In the event that the brand (with varying components and
compound ratio) of the matter to be measured is switched from
one to another, this function is used to omit the span calibration
in terms of each brand by registering beforehand the list in which
the sensitivity and compound ratio of the respective components
are input (up to ten lists can be registered) and then selecting the
list number. See Section
10.5.
6) Linearizer Since the density meter has a satisfactory linear relationship
between its actual density and instrument output, a linearization
correction is normally unnecessary. Therefore, this function is
provided as a measure to deal with special cases. See Section
10.6.
7) Density
multiplier switching
This function is to switch around up to four density multipliers by
means of ON/OFF of two external voltage signals(DI). The See Section
10.7.