Process Control Instruments, Field Devices and Industrial Automation
SKU# (171)

ENDRESS+HAUSER  CCS140-A




ENDRESS+HAUSER CCS140-A (1)
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EH CCS140 analog free chlorine disinfection sensor for industrial and pool water treatment. Amperometric and membrane-covered. 0,05 - 20ppm free chlorine measurement range (pH 4 - 8,2). Optional NTC-temperature sensor. For installation in the CCA250 assembly.

Part# with Options:        CCS140-A
Price with Options:        Please Email us your request for quote   

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Version
(1) Version for EH CSS140

  Availability 6 Days  ]

Application

Oxidising agents such as chlorine or anorganic chlorine compounds are used for disinfection of water. Their dosing must be carefully controlled to suit the application. Too low a concentration makes the degree of disinfection questionable. Too high a concentration can result in corrosion effects, impairment of taste or skin irritation.

The CCS140 and CCS141 chlorine sensors are applied for measurement of free active chlorine in the following fields:

  • Drinking water treatment
  • Pool water treatment
  • Industrial water treatment
Your benefits
  • Measurement in the CCA250 flow assembly is almost independent of flow rate in the range above 30 l/h
  • No zero point calibration necessary. This means complicated installation of an active carbon filter, as in open chlorine sensors, is not necessary.
  • Measured values are not affected by conductivity fluctuation of the medium.
  • The CCS140 sensor is ready for measurement after a polarisation time of approx. 30 ... 60 minutes. The CCS141 sensor requires 45 ... 90 min.
  • Easy membrane replacement thanks to ready-made membrane head
  • Recalibration intervals approx. 1 ... 4 months under constant operating conditions
Measuring Principle

The concentration of free chlorine is determined according to the amperometric measuring principle. The hypochlorous acid (HOCl) contained in the medium diffuses through the sensor membrane and is reduced to chloride ions (Cl - ) on the gold cathode. On the silver anode, silver is oxidized to silver chloride. The electron release of the gold cathode and electron acceptance on the silver anode result in a current flow which is proportional to the free chlorine concentration in the medium under constant conditions. The concentration of hypochlorous acid in the medium depends on the pH value. This dependence can be compensated by measuring the pH value in the flow assembly.

The transmitter transforms the current signal into the measuring unit concentration in mg/l.

Measuring Principle Free chlorine
Application Water, Waste water, pools
Characteristic Amperometric measurement of free chlorine.
Measurement range 0,05 - 20ppm free chlorine; pH 4-8,2
Measuring principle - closed (membrane covered) measuring cell.
- Reduction of Hypochloric acid (HOCl) to Chlorid on the cathode with a fixed voltage of 20mV.
Design Closed amperometric 2-electrode sensor with PTFE-membrane.
Material Sensor shaft : PVC
Membrane : PTFE
Membrane cap : PBT (GF30); PVDF

Dimension Diameter : appr. 25mm
Length : 160mm
Process temperature 10C - 45C
Process pressure 0bar - 1bar
temperature sensor Optional with NTC-temperature sensor
Connection Fixed cable connection

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