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Ndir gas analyzer installation 3 – Teledyne IR-7000 - Non-dispersive infrared series User Manual

Page 31

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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.