Filter Setting Recommendations - Cardinal 225 Installation And Technical Manual

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
EXAMPLE:
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
EXAMPLE: 20,000 x 10lb capacity scale with 800lb variation in the weight display.
800
10
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.
CALIBRATION AND SETUP, CONT.
100lbs/sec
10lbs
= FBRK
= FBRK=80
8200-M698-O1 Rev B  225 Installation and Technical
= SAMPLES
= 10s/s = SAMPLES
73