Honeywell UDC2800 - Page 106

106
Function Prompt
Selections or Range of
Setting
Parameter Definition
range within the region of 1000 °F
to 2200 °F and a minimum carbon
probe value of 800 millivolts.
Oxygen Percent Oxygen Range —Make this
selection if you are using a
Zirconium Oxide Oxygen Probe to
measure Percent of Oxygen in a
range of 0 to 40 % O₂ . This
algorithm requires a temperature
range within the region of 800 °F to
3000 °F.
ATTENTION: The Carbon and Dewpoint selections will automatically set the
first input actuation to Carbon. The Oxygen selection will automatically set
the first input actuation to Oxygen. Input 2 can be any input actuation, but it
is normally a type K, R or S thermocouple input, depending upon the probe
type selected. All calculations are performed by the Controller with Percent
Carbon shown as the PV display. The actual value of each analog input may
be viewed on the lower display. For all Carbon Types, if the value of Percent
Carbon falls below 0.1% - such as can happen when the Carbon Probe
voltage output falls below 900 mVdc – then the Controller will continue to
update the PV display, but the accuracy is unspecified. Likewise, if the
measured temperature falls outside of the specified ranges as noted above
for the Carbon, Oxygen and Dewpoint input types, then the Controller will
continue to update the PV display, but the accuracy is unspecified. For the
Dewpoint algorithm, if the Carbon Sensor voltage falls below 800 mVdc, then
the Dew Point is calculated as if the sensor voltage was at 800 mVdc.
Math K 0.001 to 1000
floating
Weighted Average Ratio or Mass
Flow Orifice Constant (K) for Math
Selections —Only applicable for
algorithms WAVG or General Math
selections Multi Div + Sqrt ,
Multiplier + Sqrt, Multiplier Divider,
or Multiplier.
Calculated High –999. To 9999.
Floating
(in engineering
units)
Calculated Variable High Scaling
Factor for Input Algorithm 1 —Used
only when either Summer, Input
Hi/Lo, or one of the General Math
Chapter 4 - Configuration