Hach 2100AN Instrument Manual page 61

SECTION 5,
continued
Figure 14 Compression Fitting
Figure 15 Suggested High Pressure Installation
Sample In
Figure 15 illustrates a suggested hookup using a pressure regulator in the inlet
line and a flow meter or flow control valve on the outlet line. The control
valve is installed on the outlet side because it may introduce bubbles into the
sample causing positive interference in the turbidity reading. This hookup also
maintains sufficient pressure to minimize outgassing in a carbonated stream.
Nut
Spacer
Flow-Through Cell
Pressure
Regulator
o-ring
Tubing
Grab Ring
Control
61
Flow Meter
(optional)
Valve
Return
Or
To Drain