Hardy HI 1756-nDF - Manual (Page 36)

32
●
●
●
●
●
Chapter 4
Parameter
Name Parameter
Number Parameter
Default Description
capture
averages 15.0 3
This sets the number of fill/dispense cycles
to average the target error values and flow
rate values to provide the auto_preact
value.
The minimum value = 1, and the maximum
value = 100
Parameter 1 Channel Active
Enables or disables the weigh channel.
Parameter 2 Weight Units (Unit of Measure)
The Unit parameter sets the scale and related displays to one of the following options:
0: Pounds (lb)
1: Ounces (oz)
2: Ton (ton) short ton
3: Kilograms (kg) - Default
4: Grams (g)
5: Metric Tonnes (t) long ton
Range: LB, OZ, TON, KG, G, T (default Kg)
Note The weigh scale module does not need to be recalibrated after changing the metric value.
Parameter 3 NumAverages
This is the number of samples to average when determining a value to reduce the effect
of material impact and/or vibration as material moves on and off the scale. The
dispenser/filler takes 95 or 145 readings per second. If you average enough weight
readings, the weight loss or gain remains smooth and the displayed value shows little or
no fluctuation, although it is actually recalculated (by sliding average) with each reading.
If a weight reading fluctuates too much, increase the number of readings in the average,
but for applications that require a very quick weight reading, do not set this value too
high.
The averaging parameter is most often set when using any device that outputs an erratic
signal (e.g. a flow meter). Using the averaging function comes at the expense of response
time. A setting of one average takes 10 milliseconds at 95sps or 6.67milliseconds at
145sps; or at a setting of 95 the average takes 1 second at 95sps or 0.67 seconds at
145sps. The averaging function is a running average, where the input signals are totaled
and the total is divided by the averaging number. The instrument reads one new signal
plus the last number of averages signals and repeats the averaging process again.
For example: With a setting of 20 averages, the instrument reads the 20 most current
input signals, totals the signals, divides by 20, drops the oldest one, reads one new signal
along with 19 old readings, totals the signals, divides by 20, drops the oldest one, etc.
The NumAverages filter is included in all weight filter modes.
Range: 1-255 (default 1)
See also WAVERSAVER for information on filtering unstable weight readings.