Hach 29971-72 Benutzerhandbuch Seite 12

Figure 6 Model 29089 regulator and filter
1 Inlet, 6 mm (1/4 in.)
2 Gauge
3 Pressure adjuster
4 Outlet, 6 mm (1/4 in.)
5 Coverplate (behind gauge)
Model 31560 or 31590—N
Use pure CO from a cylinder for the purge gas for N
2
pressure do not exceed the values in
Note: Do not use more than the recommended purge gas pressure. Too much pressure will inflate the sensing
membrane and give incorrect measurements.
Model 31460 or 31490—CO
Use nitrogen for the purge gas for CO
(e.g., 99.8%). Install a sub-micron filter before the CO
as purge gas. Make sure that the flow rate and pressure do not exceed the values in
on page 3.
Note: Do not use more than the recommended purge gas pressure. Too much pressure will inflate the sensing
membrane and give incorrect measurements.
12 English
sensor
2
Specifications
sensor
2
sensors. A source of reasonably pure purge gas is necessary
2
6 Filter
7 Filter holding nut
8 Filter cover
9 Condensate bleed screw
sensors. Make sure that the flow rate and
2
on page 3.
sensor if clean, dry air or bulk nitrogen is used
2
Specifications