TELEDYNE API Everywhereyoulook 480H, Руководство пользователя

Страница: 26 / 57

24 Teledyne API Model 480H O
3
Monitor User Manual 09421A DCN8343
3.5. PNEUMATIC CONNECTIONS
Figure 3-6. Pneumatic Connections
3.5.1. INSTALLING FLOW CONTROL ASSEMBLIES
Two (2) Flow Control assemblies are supplied separately from the monitor, these
are used to control the flow into the monitor. These Flow Control Assemblies will
supply a fixed flow into the monitor that is dependent on gas supply pressure.
Alternately, customer supplied needle valves can be used in place of these Flow
Control Assemblies if an adjustable flow control is desired. Use only needle valves
that are constructed of materials compatible with high concentrations of ozone, such
as stainless steel and Teflon.
Attach the Flow Control Assemblies by screwing them onto the threaded fittings of
the ozone inlet and the zero gas inlet.
•
Hand-tighten orifice assemblies until snug.
•
With a 9/16” open-end wrench, tighten each orifice assembly 1/8–1/4 turn.
Use a 1/2” back-up wrench to anchor the fittings of the zero gas and ozone
inlet ports in place.
•
Do not over tighten the fittings.
3.5.2. OZONE INLET CONNECTION
Connect the ozone delivery line to the Flow Control Assembly (See Section 3.5.1)
on the “Ozone Inlet” on the bottom face of the enclosure (See Figure 3-6). The
ozone delivery should be regulated between 5-30 psig.
1/4" O.D. FEP (Teflon

) or Stainless Steel tubing is recommended to connect the
sample source to the monitor. Any fittings used in the sample lines should also be
constructed of Stainless Steel.
A Flow Control assembly is provided with the monitor, see Section 3.5.1.