Hach-Lange HACH 5500 sc SiO2 Installation - Manual (Page 11)

The bypass flow can be adjusted when the analyzer is in shutdown
mode. Adjust the flow rate of the sample bypass line with the flow valve
as shown in
Figure 8 or Figure 9 . Refer to Specifications on page 3 for
the sample flow rate range. Use an external meter to measure the flow
rate of the sample bypass line. Increase the flow rate of the sample
bypass line when the process stream is far from the analyzer for a faster
response to changes in the process stream.
Figure 8 Bypass flow rate adjustment - one stream
Figure 9 Bypass flow rate adjustment - multi-streams
Electrical installation
D A N G E R
Electrocution hazard. Use either high voltage (more than 30 V RMS
and 42.2 V PEAK or 60 VDC) or low voltage (less than 30 V RMS and
42.2 V PEAK or 60 VDC). Do not use a combination of high and low
voltage.
D A N G E R
Electrocution hazard. Always remove power to the instrument before
making electrical connections.
English 11