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NDIR Gas Analyzer
The standard output of the analyzer is a 0–1 V DC signal and
represents the concentration from 0 to full scale on the currently selected
range. The output is linear over each range as long as LINEAR is set in the
MODE menu. See Section 4.3 The MODE Menu. For example, if the
analyzer is currently set on range 2 which has been defined as 0–100 ppm
CO
, and the MODE is set to LINEAR, then the output would be:
2
CO
PPM
2
0
10
20
30
40
50
60
70
80
90
100
I/O BOARD SWITCH POSITIONS FOR VOLTAGE OUTPUT
S1-1
S1-2
OFF
OFF
OFF
ON
ON
ON
Teledyne Analytical Instruments., - Rev. 3
S
IGNAL
OPTIONAL
O
UTPUT
Voltage (V)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
S1-3
S1-4
OFF
OFF
ON
ON
ON
ON
Installation 3
4–20
A
M
O
UTPUT
C
(
A)
URRENT
M
4
5.6
7.2
8.8
10.4
12.0
13.6
15.2
16.8
18.4
20.0
IR Volt
1V.
5V.
10V.
O
Volt
2
1V.
5V.
10V.
23
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