Xylem CL500 ONLINE CHLORINE ANALYZERS - Manual (Page 32)

INLET
CHECK
VALVES
CAP ASSEMBLY "A"
PUMP
HAMMER
AND SPRING
THUMB
SCREW
REAGENT
PUMP
ASSY
INLET OUTLET
FLOW`
CHECK VALVE DETAIL
OPTICS SYSTEM
KNURLED TOP
CUVETTE
RETAINING
O-RING
CAP ASSEMBLY "A"
Figure 7: Reagent Tubing Installation
10.2 Replacing or Installing the Reagents
Reagent kits are available from Global Water Instrumentation for Free Chlorine and for
Total Chlorine Refer to section 11.0 Replacement Parts and Accessories for the
appropriate Catalog numbers. There
are two reagents required, and supplied in each kit;
the buffer and the indicator.
The buffer and indicator reagents are provided as dry reagents and require the addition of
deionized water. You will need to have at least 1 liter of deionized water on hand prior to
preparing the solutions. Allow about ½ hour time to prepare the reagents.
Use caution while preparing. These reagents are caustic and can burn skin
and stain clothing. The use of protective gloves, clothing and eye protection is
highly recommended.
Buffer Reagent Preparation
Add about 400 ml of deionized water into the buffer bottle. Cap tightly and shake
vigorously until the powder is fully dissolved. When fully dissolved add enough deionized
water to bring the volume in the bottle up to the fill line.
CL500 (2/08) Page 28
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