Shimadzu PDA-7000 User Manual

5 Maintenance
5-35
PDA-7000
→ Room
R 1/4
Rc 1/4
2
1
2
1
3
3
4
No.1
No.2
Pressure 140 – 200kPa (1.4 – 2.0kgf / cm
2
)
♦ Pressure 500kPa (5.0kgf / cm
2
)
♦ Place a regulator inside the room
(1) Ar Regulator
Primary pressure
: 15MPa (150kgf / cm
2
)
Secondary pressure
: 140 - 200kPa (1.4
- 2.0kgf / cm
2
)
(ex.) P/N : 200
-33871
(2) Main valve
Use stainless steel type.
(3) Purge valve
Needed to
clear out the air after the change of gas cylinders.
(Place as close to main valve as possible)
(4) Plumbing pipe
(1) If the distance betwee
n gas cylinder and PDA
-7000 is
5m or less, use polypropylene tube. (P/N : 016
-43505)
(2) If the distance between gas cylinder and PDA
-7000 is
5 - 40m, set the secondary pressure to 500kPa (5kgf / cm
2
)
and place a regulator inside analysis room to set t
he pressure at PDA
-7000 gas inlet 140
- 200kPa
(1.4 - 2.0kgf / cm
2
), as described with
♦ in the figure.
> Use stainless steel plumbing pipes for high purity gases. > For the details of the plumbing such as the thickness of the pipe, consult a plumbe
r company.
Ar gas cylinder Pressure
: 15MPa (150kgf / cm
2
)
Purity
: 99.999% or more
Oxygen concentration
: 1ppm or less
Dew point
: below
-70°C
Cylinder replacement procedure (1) Close main valve 2 connected to the cylinder to be replaced. (2) Repla
ce the Ar gas cylinder and open the valve of regulator 1 .
(3) Open and then close purge valve 3 several times, to clear out
the air and contamination.
(4) Open main valve 2 . Take special care if nitrogen is to be measured.
→ Installed by Shimadzu

Shimadzu PDA-7000 Specifications

General

Brand	Shimadzu
Model	PDA-7000
Category	Measuring Instruments
Language	English