Endress+Hauser CCA250 Specifications

Technical Information

Flowfit CCA250

Flow assembly for chlorine and pH/ORP sensors

Application

The flow assembly CCA250 has been specially designed to hold
the chlorine resp. chlorine dioxide sensors CCS120, CCS140,
CCS141, CCS240, CCS241 or CCS142D. Additionally there
are two mounting positions for sensors with Pg 13.5 thread and
120 mm (4.72 inch) installation length, e.g. pH or ORP sensors.

Main areas of application are:

• Drinking water

•Washwater

• Process applications

• Swimming pool water

Your benefits

• Needle valve to adjust the flow and flow meter for optical
control

• Inductive proximity switch in combination with Liquisys M
CCM223/253: a "Flow alarm" can be activated

• Potential matching pin for pH measurement

• Cap screwed from below allows calibration of the pH and
ORP sensors without sensor removal

TI062C/07/en/07.09
71099077

Function and system design

Measuring system A complete measuring system comprises:

• Flowfit CCA250

• Chlorine sensor, e.g. CCS142D

• Measuring cable, e.g. CYK10

• Transmitter, e.g. Liquiline M

Optional:

• up to two pH sensors, e.g. Orbisint CPS11D

• Junction box for cable extension, e.g. RM junction box

Flowfit CCA250

Fig. 1: Measuring system

1 Transmitter Liquiline M CM44 with weather protection cover
2 Supply line of the transmitter
3 Chlorine sensor CCS142D
4 Flowfit CCA250
5 Assembly inlet (outlet at backside, not to be seen in figure)
6pH-Sensor
7 Measuring cable CYK10

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2 Endress+Hauser

Flowfit CCA250

12 3

4

p1

p2

p1>p2

1

2

3

p

Installation

Installation instructions Bypass operation

To achieve a flow through the bypass, pressure p1 has to be higher than pressure p2. Therefore, you have to
install an orifice plate or a throttle valve in the main pipe (→ å , pos. 4).

Installation example with bypass and orifice plate in the main pipe

1 Stop valve (to be provided by customer)
2 Pressure reducer (if p1 > 4 bar (58 psi)) (to be provided by customer)
3 Stop valve (to be provided by customer)
4 Orifice plate in the main pipe (to be provided by customer)

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Caution!

p2 must not exceed the permissible operating pressure of the assembly of 4 bar (58 psi).

Open outlet operation

Installation example with open outlet

1 Stop valve (to be provided by customer)
2 Pressure reducer (if p > 4 bar (58 psi)) (to be provided by customer)
3 Stop valve (to be provided by customer)

Endress+Hauser 3

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