NDIR Gas Analyzer
Installation 3
Teledyne Analytical Instruments., - Rev. 3
23
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
2
, and the MODE is set to LINEAR, then the output would be:
PPM
CO
2
S
IGNAL
O
UTPUT
Voltage (V)
OPTIONAL
4–20
M
A
O
UTPUT
C
URRENT
(
M
A)
0 0
4
10 0.1
5.6
20 0.2
7.2
30 0.3
8.8
40 0.4
10.4
50 0.5
12.0
60 0.6
13.6
70 0.7
15.2
80 0.8
16.8
90 0.9
18.4
100 1.0
20.0
I/O BOARD SWITCH POSITIONS FOR VOLTAGE OUTPUT
S1-1
S1-2 S1-3 S1-4
IR
Volt
O
2
Volt
OFF
OFF
1V.
OFF
ON
5V.
ON
ON
10V.
OFF OFF 1V.
ON ON 5V.
ON ON 10V.