Hach-Lange FILTERTRAK FT 660 sc Basic User Manual - Manual (Page 8)

Figure 4 Instrument dimensions
1 22 cm (10 in.) minimum clearance
Electrical installation
Connect an sc controller using Quick-connect fitting
The instrument can be connected to an sc controller using the keyed
quick-connect fitting (
Figure 5 ). Extension cables are available. Retain
the connector cap to seal the connector opening in case the instrument
must be removed. Refer to the sc controller manual for more information.
Figure 5 Quick-connect fitting
Plumbing
Sample line considerations
Select a good, representative sampling point for optimum instrument
performance. The sample analyzed must be representative of the
conditon of the entire system.
To minimize erratic readings:
• Draw samples from locations that are sufficiently distant from points of
chemical additions to the process stream
• Make sure samples are sufficiently mixed
• Make sure all chemical reactions are complete
Connect the sample stream
Connect sample inlet and drain lines to the fittings on the body of the
instrument (
Figure 1 on page 6). Sample inlet and drain tubing are
supplied by the customer. Refer to Specifications on page 3 for tubing
requirements.
Install the sample line(s) into a larger process pipe to minimize
interference from air bubbles or pipeline bottom sediment. A sample line
going into the center of a process pipe is best.
8 English