104 • Using Setup Mode
EAGLE 2 Operator’s Manual
NOTE:
If you define a gas whose LEL is above 50,000 ppm, the %LEL reading in
Measuring Mode will reflect the defined ppm ratio, but the ppm reading in
Measuring Mode will not indicate above 50,000 ppm. For example, if you set
the ratio to be 150,000 ppm and set the catalytic combustible channel to display
the reading in ppm, the gas reading will not indicate higher than 50,000 ppm,
the equivalent of 33 %LEL and 5% volume for this ratio, but will continue to
indicate %LEL readings up to 100 %LEL and %volume readings up to 15
%volume, the equivalent of 150,000 ppm, if the display units are changed to
%LEL or %volume. In addition, all adjustable ppm parameters cannot be set
higher than 50,000 ppm.
10. Press and release POWER ENTER RESET to enter the ppm ratio. The FACTOR for
the gas begins to flash. The FACTOR for the gas is the response factor for the user
defined gas relative to methane. The response factor must be obtained by testing the
user defined gas and comparing its response to methane. This parameter is used by
the relative response feature. See “Catalytic Sensor Relative Response Screen” on
page 44 for a description of the relative response feature and how to use it. See
“Combustible Gas Detection” on page 34 for a list of response factors for several
common hydrocarbon gases that have already been tested.
11. Use AIR
▲
YES and RANGE
▼
SHIFT to increase or decrease the response factor to
the desired number.
12. Press and release POWER ENTER RESET to enter the response factor. The sensor
voltage setting screen appears with the sensor voltage flashing. The current gas and
range is shown at the top of the screen and the current sensor voltage is shown at the
bottom of the screen.
The sensor voltage setting defines whether the catalytic sensor voltage is set for full
response, 2.40 volts, or methane elimination, 1.30 volts. If the sensor voltage is set to
2.40 volts, the unit will default to Full Response Mode when turned on, but the
methane elimination feature can be turned on in the Methane Elimination Mode
Screen in Display Mode. If the sensor voltage is set to 1.3 volts, the unit will default
to Methane Elimination Mode when turned on, but the methane elimination feature
can be turned off in the Methane Elimination Mode Screen in Display Mode.
13. Use AIR
▲
YES or RANGE
▼
SHIFT to display the desired catalytic sensor voltage,
1.30 volts or 2.40 volts.
CAT(0-50000ppm CH4)
SETTING EV
UP/DOWN THEN ENTER
2.40
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