Hach-Lange ORBISPHERE A1100 Family - Manual (Page 29)

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Installation
The connection diagram below is a recommended installation that allows for measuring and
calibrating without having to disconnect a line manually. "A" and "B" represent 3-way valves.
For measuring, calibration gas inlets and outlets are shut off. During calibration, the flow is
reversed to drive the remaining sample out. The calibration gas enters at the "sample out" port
and exits at the "sample in" port, as shown.
Table 4 Flow Chamber Orientation
Sample Orientation of flow chamber
Gaseous or
liquid media
Vertically, with connections down and
sensor up
- Center connection is the inlet
- Outer connection is the outlet
Gaseous media,
with occasional
liquid or vapor
Horizontally, to allow for drainage
- Center connection (inlet) must be up
- Outer connection (outlet) must be down
Figure 12 Flow chamber connections