4230 Flow Meter
Section 4 Optional Equipment
4-16
larger pipes, use the Isco Universal Mounting Ring. For instal-
lation details, refer to the instruction sheet supplied with the
mounting ring.
The mounting rings are held in place by the outward force of
spring pressure in the smaller sizes and by a screw arrangement
in the larger sizes. After mounting the probe in the ring or strap,
route the cable out of the stream so it will not trap debris that
could clog the sewer.
Mount the pH Module within 25 feet of the probe, but in a
location higher than the highest anticipated level for the flow
stream. The amplifier box is sealed and will withstand tem-
porary submersion, but this should be avoided.
Figure 4-5 201 pH Module
Note
When installing the pH probe and its sensor carrier, make sure
the mounting slots on the carrier are completely pressed into
the mating tabs on the ring. The probe relies on a full engage-
ment between tabs and slots for secure mounting. If the slots
are loose against the tabs, the probe may be swept away by
the force of the stream.
• Always mount the probe in an easily-accessible location,
because you will need to service it (cleaning) from time
to time.
Also, you will eventually need to replace it. You can
mount the probe facing either upstream or downstream,
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