RLE GD100 - Manual (Page 14)

CTS-M17 Installation, Operation and Maintenance Manual
B84450-001-000 RG May 12, 2005 13
1 1 0 0 0 0 % % L L E E L L
This feature allows adjustment of the 20 mA point to different gas
concentrations.
Note: This setting only affects the concentration corresponding to 20
mA and not the range displayed on the LCD.
Maximum: 500 %LEL (see note 3 below)
Minimum: 0 %LEL
Note 1: An inverted response at the signal output can be achieved by
setting CONC4MA higher than CONC20MA.
Note 2: Changing the range in this fashion does not enhance the gas
measurement accuracy (e.g.: If there is an error of 1 %LEL,
it will still be an error of 1 %LEL even if the range is
reduced).
Note 3: Even though the 20mA point can be adjusted beyond
100%LEL, the product can only measure accurately to just
over 100%LEL, due to the response of the sensor. The range
up to 500%LEL is only provided for flexibility in the
installation.
IMPORTANT: Do not set CONC4MA and CONC20MA points
closer than 10 %LEL. If the unit finds these
points closer than 10%LEL on menu system exit,
the higher point will be automatically adjusted
until a minimum difference of 10%LEL is present.
8. Gas Type Selection
G G A A S S T T Y Y P P E E
M M e e t t h h a a n n e e
Choose GAS TYPE from:
Methane
Butane
Ethanol
Genl LEL (General %LEL)
Propane
Hydrogen
Factory default is Methane.