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34. Flue Pressure Set-up
If the flue or process gas pressure at the position of the oxygen probe is significantly
different from atmospheric pressure, the pressure value should be entered into the
transmitter (1 kPa will give an error of about 1% of the oxygen reading).
If the flue pressure is constant, select "Fixed" in this function and select the pressure units
and pressure value in set-up 37 and 38.
If the pressure varies, select "Variable Input", and connect a pressure transducer to screw
terminals 8 & 9 (see Section 3.26). Set the range of the transducer using a zero and span
value set in set-up items 35 and 36.
Options:
Fixed
*
Variable Input
35. Flue Pressure Zero Input Value
Only available if "Variable Input" is selected in set-up 34.
Set the 4mA level if the pressure transducer measuring the flue or process pressure. The
default setting is –1000mb.
Limits :
-1000 to +2900mb. The minimum range is 100mb.
36. Flue Pressure Span Input Value
Only available if "Variable Input" is selected in set-up 34.
Set the 20mA level if the pressure transducer measuring the flue or process pressure.
The default setting is 0mb.
Limits :
-900 to +3000mb. The minimum range is 100mb.
37. Flue Pressure
Enter flue pressure, eg. 3 mm (0.12") W.G. Only available if "Fixed" is selected in set-up
34.
Options:
mm W.G.
*
Kilopascals
Inches W.G.
38. Flue Pressure Value
Enter flue pressure e.g. 3 mm (0.12") WG. The default setting is 0. Only available if
"Fixed" is selected in set-up 34.
Limits :
-3000 to +3000 mm
-3000 to +3000 inches W.G.
-3000 to +3000 kPa
39. Single Or Dual Fuel
Enter single or dual fuel. This step and set-up steps 39 to 51 will be skipped if oxygen
deficiency, combustibles or maximum carbon dioxide is not selected in set-up steps 28, 33
or 82 for display or output on the 4-20mA channels or the printer port.
A set of default values for the fuel constants are loaded into memory. The fuel constants
from Appendix can be entered into the following menu items, or the constants can be
tailored to suite any particular fuel.
9060-Zirconia Analyser
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