RLE Falcon EM - Manual (Page 120)

Analog Averaging User Guide: Falcon FMS
106 970 484-6510 www.rletech.com
APPENDIX B: ANALOG AVERAGING
B-1 ANALOG AVERAGING OVERVIEW
Analog averaging allows the user to change the averaging method for analog inputs. Normally, the FMS
samples analog points once a second while keeping track of high and low values for each analog point.
After 60 seconds, the average of these readings and the high and low values for these points are recorded in
the minute log.
B-2 HOW ANALOG AVERAGING AFFECTS VALUES
Analog averaging can be changed through either the Web interface or the EIA232 interface. An example
of how averaging is altered and how it impacts high and low recordings is shown here.
 Analog averaging value is set to 5.
 The analog point is a temperature sensor.
 Temperature readings are displayed for an eleven second period
70, 70, 70, 71, 71, 72, 72, 73, 73, 74, 74
Average = 70, High Value = 70, Low Value = 70
70, 70, 70, 71, 71, 72, 72, 73, 73, 74, 74
Average = 70, High Value = 70, Low Value = 70
70, 70, 70, 71, 71, 72, 72, 73, 73, 74, 74
Average = 71, High Value = 71, Low Value = 70
70, 70, 70, 71, 71, 72, 72, 73, 73, 74, 74
Average = 71, High Value = 71, Low Value = 70
70, 70, 70, 71, 71, 72, 72, 73, 73, 74, 74
Average = 72, High Value = 72, Low Value = 70
70, 70, 70, 71, 71, 72, 72, 73, 73, 74, 74
Average = 72, High Value = 72, Low Value = 70
70, 70, 70, 71, 71, 72, 72, 73, 73, 74, 74
Average = 73, High Value = 73, Low Value = 70
Under normal conditions, the average reading would equal 71, the high value would equal 74, and the low
value would equal 70. By changing the averaging method, the average reading is 73, the high value at 73,
and the low value for this example remains the same. In a sense, averaging slows down the sensor response
and the rate of change.