Sensor reading, scaling, and override duration, Lead/lag controller technical guide – Orion System Lead Controller User Manual
Page 15
Lead/Lag Controller Technical Guide
Section 4: Confi guring Analog Inputs
15
Sensor Reading, Scaling, and Override Duration
Sensor Reading Appendix
Select from the drop down list in the
<Sensor Reading Appendix>
fi eld (Figure 13) to give the sensor reading a qualifi er.
● None: No Appendix Required
● RH%: Humidity Percentage
● %: Percentage
● °F: Fahrenheit
● °C: Celsius
● PPM: Parts per Million
● PSI: Pound per Square Inch
● “WG: Inches of Water Gauge
● “: Inches
● Ft.: Feet
● RPM: Revolutions per Minute
● VDC: Volts D.C.
● BTU: British Thermal Unit
● CFM: Cubic Feet per Minute
● Hr: Hours
● Min: Minutes
● GPM: Gallons per Minute
● kPa: Kilopascals
Sensor Scaling
Figure 13: Sensor Reading Appendix Field
Figure 14: Sensor Scaling Field
All readings are user-scalable according to the number of digits
to the right of the decimal point. See Figure 14 and values and
examples below.
●
X
1
65°F
● X 10
65.5°F
● X 100
65.54°F
● X 1000
65.543°F
Number of Readings to Average
This function has the capability of averaging up to 25 sensor readings
before it displays a new value on one of the Lead/Lag Controller
Status Screens. Sensor values are read once per second.
Type the number of readings from this sensor you want to aver-
age in the
<Number of Readings to Average>
fi eld and press
<ENTER>
to save. See Figure 15. Valid entries are from 1-25.
If you want the input sensor to only show its most current reading,
enter
<1>
.
Figure 15: Number of Readings to Average Field
User Scaling
The User Scaling Box allows you to set a Maximum and Minimum
Reading for the specifi c 4-20 mA or 0-5 vdc sensor you are using.
This means you can display values with ± 1, ± 0.1, ± 0.1± 0.01 or
higher resolutions. Just keep in mind that the maximum value that
can be sent from the controller is ±30,000, so if you have scaled your
reading to ± 0.001, then the maximum value you can send is ± 30
with the 3 additional decimal values (30.000). See Figure 16. Type
in the values and press
<ENTER>
to save.
Figure 16: User Scaling Box