Chapter 4 – General Configuration
Firmware Version 3/4.31.37
Relative Density Alarm
Time
At the default value of zero seconds, density alarms will be raised instantly. A small
delay can be added, in seconds, to avoid nuisance alarms that may occur when
relative density is momentarily out of range. The relative density alarm timer will only
run when a density alarm is not active and a batch is currently authorized on this
preset.
Relative Density @ Low
Value
Enter the relative density that will represent the lowest density value measured by the
transmitter. This value will be equal to 4 mA or 1V.
Relative Density @ High
Value
Enter the relative density that will represent the highest density value measured by the
transmitter. This value will be equal to 20 mA or 5V.
This parameter provides a means to introduce a relative density offset to correct the
indicated relative density to the observed relative density.
The 2% Meter Factor Limit Reference is a number that is representative of the meter
factors obtained during an initial proving session. Enter a value that is the average of
all meter factors obtained during an initial proving session. Examples of initial proving
sessions are proving’s that occur after a meter has been repaired or replaced. If,
during subsequent proving sessions, any one of the four meter factors has changed
from the reference by more than 2%, an INVCONFIG alarm will be raised. The flow
meter should be inspected if it is not possible to obtain a meter factor that is within 2%
of the reference. Set this parameter to zero to deactivate the feature.
Enter a value to limit variation in adjacent meter factors. The Adjacent Meter Factor
Deviation Limit will prevent a meter factor adjustment that will result in a variation of
the entered value. For example, it is desired to limit the variation of adjacent meter
factors to 0.25%. If a new meter factor has been obtained for meter factor #2, this
new meter factor cannot deviate more than plus or minus 0.25 percent from meter
factor #1 or meter factor #3. If a new meter factor is entered that violates this setting,
an INVCONFIG alarm will be raised after the MultiLoad II reboots. To set the limit to
0.25%, enter a value of 0.0025. The flow meter should be inspected if it is not
possible to obtain a meter factor that does not violate this condition. Set this
parameter to zero to deactivate the feature.
This parameter limits the range Temperature Offset that can be introduced. The valid
range of entries is from one to five degrees. If a value of one is entered, for example,
the Temperature Offset parameter can only be varied from zero by 1 degree. When
measuring temperature in Celsius, enter a value of one. When measuring temperature
in Fahrenheit, use a value of three.
This parameter enables an output pulse that is representative of the volume delivered
through the particular flow meter.
For FCMs and I/O boards with firmware 035 and earlier, the port setting must always
be set to 1 for FCMs and 10 for I/O boards.
For FCMs and I/O boards with firmware 026 and later, the port setting can be 0-5 for
FCMs, and 10-12 for I/O boards.
For FCMs and I/O boards with firmware 038 and later, support dual pulse outputs. Enable
dual pulse output by configuring the “Invert” state on this port. This port will be the leading
pulse. The trailing pulse will be the next contiguous port (0/1, ½, 2/3, ¾, 4/5, 10/11, 11/12)
on the FCM or I/O board.
Notes:
Single Output Pulse Limited to 500 Hz Max.
Dual Output Pulse Limited to 250 Hz Max.
Output pulses are NOT real time and delayed up to 1 second from acquisition.
A factor can be applied to the pulse output to achieve the desired pulse resolution.
The pulse resolution can be configured from 0.001 to 50.000 pulses per unit volume or
mass.
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