Model NGA2000 NDIR

Instruction Manual

748332-F April 2003

CELL LENGTH

 

CELL VOLUME

TOTAL VOLUME

TIME FOR 2 VOLUMES

 

CC

CC

@ 2 SCFH (1L/MIN)

 

 

 

mm

inch

without inlet tube

cell with inlet tube

at 750 mm Hg

 

 

 

 

 

 

3

0.118

 

0.85

12

2 sec.

 

 

 

 

 

 

4

0.157

 

1.14

12

2 sec.

 

 

 

 

 

 

8

0.315

 

2.28

13

2 sec.

 

 

 

 

 

 

16

0.630

 

3.56

16

2 sec.

 

 

 

 

 

 

32

1.25

 

9.12

20

2 sec.

 

 

 

 

 

 

64

2.52

 

18.24

25

3 sec.

 

 

 

 

 

 

128

4.03

 

35.48

44

3 sec.

 

 

 

 

 

 

232

9.13

 

65.12

73

6 sec.

 

 

 

 

 

 

343

13.50

 

97.76

105

13 sec.

 

 

 

 

 

 

381

15.00

 

108.60

116

14 sec.

 

 

 

 

 

 

 

Table 2-1.

Cell Purging Times at Atmospheric Sample Pressure

FAN

OUT

OUT

 

SAMPLE

REFERENCE

IN

IN

10 PSI MAX

10 PSI MAX

(69 kPa MAX)

(69 kPa MAX)

PURGE IN

15 PSI (103 kPa) MAX

Note: Reference and purge gas connections are applicable only to certain applications.

Figure 2-2. NDIR Back Panel

Rosemount Analytical Inc. A Division of Emerson Process Management

Installation 2-3