8200-M698-O1 Rev B 225 Installation and Technical
73
CALIBRATION AND SETUP, CONT.
Filter Setting Recommendations
Non-Critical Sample Rate
If the sample rate is not critical, as in static weighing, set FILTER= to:
FILTER=0 (NO Filtering)
FILTER=1 (FMAX=6, FBRK=12, SAMPLES=2/Sec) or
FILTER=2 (FMAX=6, FBRK=8, SAMPLES=1/Sec).
Critical Sample Rate
With a critical sample rate, as in a filling operation, use Custom Filtering (FILTER=3).
1. SAMPLES= SAMPLE RATE (1 to 200 samples/second) determination:
Set the sample rate as close as possible to produce a display graduation change for
every graduation of material added to the scale.
Material Flow Rate (lbs/second)
Interval
= SAMPLES
100lbs/sec EXAMPLE:
10lbs
= 10s/s = SAMPLES
2. FBRK= FILTER BREAK RANGE (1 to 64 graduations) determination:
Turn the filtering off by setting FILTER=0. Operate the system as it will be normally
used and, by observation, determine the number of grads of instability that needs to be
filtered out. Set the break range (FBRK=) to that value.
Weight Change
Interval
= FBRK
EXAMPLE: 20,000 x 10lb capacity scale with 800lb variation in the weight display.
800
10
= FBRK=80
3. FMAX= MAXIMUM FILTER LEVEL (0 to 255) determination: Set to desired results.
4. If stability is unacceptable with any setting of FMAX=, reduce the sample rate and/or
increase the break range, FBRK= setting for increased filtering.
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