RLE GD100 User Manual
Page 13
CTS-M17 Installation, Operation and Maintenance Manual
B84450-001-000 RG
May 12, 2005
12
Enabled
5.2
Actuation Set point
Minimum = 5 %LEL. Maximum = 60 %LEL in 5 %LEL increments.
Default = 40 %LEL
5.3. De-Actuation Set Point
Minimum = 5 %LEL. Maximum = 60 %LEL in 5 %LEL increments.
Default = 35 %LEL.
6.
Range Adjustment – 4mA
C
C
O
O
N
N
C
C
4
4
m
m
A
A
0
0
0
0
0
0
%
%
L
L
E
E
L
L
This feature allows adjustment of the 4 mA point to non-zero gas
concentrations. The display will always read as low as 0000 %LEL, but the
concentration corresponding to 4 mA changes.
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 4mA 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.
7.
Range Adjustment – 20mA
C
C
O
O
N
N
C
C
2
2
0
0
m
m
A
A