5
INZ-TN5ZBAS-E
5.3 Sampling tube
(1) The sample line pipe material must not alter the composition of the sample gas, and must be cor
-
rosion resistant.
The recommended material is a Teflon tube. Please prepare pipe joints (for Rc1/2).
(2) Prepare pipe joints (for Rc1/2) if using pipes such as SUS pipe or SGP pipe.
(3) SUS pipe is recommended for the blowback line pipe material.
(4) Connect the pipes to the respective connections as shown in Fig. 5-3.
1
2
3
4
Blow 2 connection
Sample connection
Blow 1 connection
Fig. 5-3
(5) Refer to Fig. 5-4 for an example for a blowback line pipe.
Sample
Blow 1
Blow 2
Motorized valve 3
Motorized valve 2
Filter
regulator
Motorized valve 1
To analyzer
(sample line)
Instrument air
or nitrogen
0.4 to 0.7 MPa
300 L/min
Fig. 5-4
(6) Ensure that the sample pipe from the gas extractor inclines downward by 15° or more to allow
condensed water to flow.
(Sagging is not permitted at any point in the middle of the pipe) Particular attention should be
paid to the inclination at the gas extractor exit (see Fig. 5-5).
Ground
Ground
Pipe
Pipe
15° or more
Extractor
Extractor
Gas analyzer system
Gas analyzer system
Pay attention to sagging in middle
Fig. 5-5
