Model: CD-36D
1. General
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1. General
This “Reagentless Free Chlorine Analyzer”, Model: CD-36D (hereinafter, referred to as the
“Transmitter” or “Product”), is designed and manufactured for the purpose of monitoring the residual
free chlorine in the city water and is applicable for your monitoring system to continuously monitor
the city water quality being distributed.
The measured value is delivered as an output signal of 4 to 20mA DC (or 1 to 5V DC depending on
the specifications fixed at the order).
The measuring ranges of the analyzer are shown below depending on the ordered specification.
Normally they cannot be changed once they are chosen.
Measuring range
⋅⋅⋅⋅⋅⋅
Choose one from 0 to 1, 0 to 2, and 0 to 3mg/L (or ppm)
(1) Outline of Start-up Procedure
The following table shows the outline of start-up procedure.
Outline of Start-up Procedure
Step Description
Reference
Section
Installation, piping and wiring “8.
Installation”
Filling of beads and introduction of
the city water
“3. Preparation for Operation”
To start the operation of the
Transmitter, execute the calibration
according to the instructions.
“4. Operation”
Installation
Preparation for Operation
Operation
Normal Operation
(2) Configuration of the Transmitter for the Measuring System
(a) The reagentless free chlorine analyzer, “Transmitter”, for the measuring system consists of several
elements as described and illustrated in the following table and figure.
(b) The vibrating type residual free chlorine detector, Model: CLV series, is an detector developed for
priority on “easy to handle” and “low cost”. On the other hand, the rotating type residual free
chlorine detector, Model: CLR-21-A, is an detector developed for stable measurement. Therefore,
please specify which detector to be incorporated with the Transmitter when placing order. Note
that the Transmitter needs to be returned to DKK-TOA to change its setting if it is requested to
change the type of the incorporated detector to the other one.
(c) The flow cell, Model: CLZ-4, is made of acrylic and provided with a sampling valve and a flow
regulating valve for laboratory analysis.