Model 190 Installation, Technical and Operation
8400-M022-O1 Rev J
4.5.1 Filter Setting Recommendations
Non Critical Sample Rate
If the sample rate is not critical, as in static weighing, set:
dFLt= 0
(F=2, b=1),
dFLt= 1
(F=6, b=12, Sr= 2), or
dFLt= 2
(F=20, b=12, Sr= 1).
Digital Filtering (dFLt=) selections 0, 1 and 2 have fixed factory settings
for Filter Level, Break Range and Sample Rate.
Critical Sample Rate
If the sample rate is critical, as in a filling operation, use Custom Filtering
(set dFLt= to “3”).
1. Sr= SAMPLE RATE (1 to 120 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)
Resolution
EXAMPLE: 100lbs/sec
10lbs
2. b= BREAK RANGE (1 to 255 graduations) determination:
Turn the filtering off by setting the dFLt= setting to “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 (b=) to that value.
Weight Change
Graduation Value
EXAMPLE: 20,000 x 10lb capacity scale with 800lb variation in the
weight display.
800
10
3. F= FILTER SETTING (1 to 99) determination: Set to desired results.
4. If stability is unacceptable with any setting of F=, reduce the sample
rate and/or increase the break range, b= setting for increased filtering.
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