Cal Flame FM-204 Operator's Manual download pdf (Page 122)

112 • 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 43 for

a description of the relative response feature and how to use it. See

“Combustible Gas Detection” on page 31 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

CAT(0-50000ppm CH4)

SETTING EV

UP/DOWN THEN ENTER

2.40

1 2 ... 117 118 119 120 121 122 123 124 125 126 127 ... 308 309

No comments

Cal Flame FM-204 Operator's Manual Page 122