What is averaging and how does it work?

Hardy Process Solutions controllers update multiple times per second. A new weight sample is entered into the weight data queue every update. As new data is entered old data is shifted down one memory location. The number of readings selected for averages in the calibration menu are added together and divided by the number of averages. Applications requiring very quick weight readings should reduce this setting to it's minimum. If the weight is unstable due to material impacting, increase the averages. The recommended starting number of averages is 10.  Use the numeric keys to enter the new value (the range is 1 to 200 or 1 to 255, depending on which model instrument you have).

Averaging and WAVERSAVER™ are NOT the same! WAVERSAVER™ is a algorythm designed by Hardy Process Solutions to ignore in-plant vibration that causes fluctuations in weight readings. Averaging is used to ignore the impact of product moving on and off the scale. Please search on WAVERSAVER™ to learn more about it.

The number of averages is the number of updates that the module will average together to get the reported weight. If you increase the number of averages from 10 to 20 (ignoring WAVERSAVER™ delay), the time your Hardy Instrument will take to reach its final weight reading will double. So, if you were looking for a specific weight to react to, like to stop the fill process, by increasing your number of averages from 10 to 20 you may overfill due to the doubling of the time it takes to react. If you decide to increase the number of averages, you may need to adjust the set point target weight or pre act accordingly to prevent an overfill.

The number of averages is adjustable on most Hardy Instruments. The update time for each model of Hardy Instrument may differ and is not adjustable. Here is the update time for most Hardy models:

HI 2110 WI = 50msec
HI 2151 Series = 50msec
HI 3010 = 18msec
HI 3030 = 18msec
HI 3300 = 18msec
HI 3600 = 18msec
HI 4050 = 9msec
HI 4060 = 9msec
HI 6300 = 18msec
HI 6310 = 18msec
HI 6500 = 9msec
HI 6600 = 9msec
HI 1746WS = 50msec
HI 1756WS = 20msec
HI 1756FC = 10msec
HI 1756nDF = 6.9 msec or 10.5 msec (selectable)
HI 1769WS = 10msec
HI 1769FC = 10 msec
HI 1771WS = 50msec
HI 200DNWM = 10msec or 100msec, depending on the WAVERSAVER™ setting.

If you know the event duration of any disturbance then the correct number of averages can be applied. Average setting take care of the bumps in your filling and dispensing process. Minimizing bumps creates a smoother measurement.