Cal Flame FM-204 Operator's Manual download pdf (Page 43)

EAGLE 2 Operator’s Manual Measuring Mode, Normal Operation • 33

CAUTION: Any rapid increase in the combustible gas reading on the

catalytic combustible channel followed by a declining or erratic

reading may indicate a gas concentration above the LEL which

may be hazardous.

• Some gases such as silicone vapors, chlorinated hydrocarbons, and

sulphur compounds can contaminate the detection elements inside the

combustible sensor damaging the sensor and result in reduced response to

combustible gas. Make every effort to avoid these gases. The catalytic

combustible sensor has an integral H

S scrubber for protection from H

exposure resulting from normal use, but you should avoid exposure to

high levels of H

S and other sulphur compounds.

Monitoring Combustible Gas in the PPM or %Volume

Range

The standard factory configuration for the EAGLE 2 allows the user to use

the RANGE ▼ SHIFT button to change the displayed detection units of the

catalytic combustible channel between %LEL, ppm, and %volume. It is

possible to disable this capability and set the EAGLE 2 to display only one of

the detection units by using the Catalytic Units menu item in Setup Mode.

See “Setting the Catalytic Detection Units” on page 113 for instructions to set

this Setup Mode Menu item.

The detection range of the combustible catalytic channel when set for ppm or

%volume will correspond to 0 - 100% LEL for the configured gas. For

example, the LEL for methane (CH

) is 5% volume, or 50,000 ppm. So if the

catalytic combustible channel is displayed in terms of %volume, the full

scale is 5.00% and if it is displayed in terms of ppm, the full scale is 50,000

ppm.

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 308 309

No comments

Cal Flame FM-204 Operator's Manual Page 43