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CCS240/241

Maintenance

Hauser

25

9.2.3  

Refilling the electrolyte

NOTICE

Damage to membrane and electrodes, air bubbles

Possibility of measured errors to complete failure of the measuring point

Do not touch the membrane or electrodes. Avoid damaging them.

The electrolyte is chemically neutral and is not hazardous to health. Nonetheless, do not

swallow it and avoid contact with eyes.

Keep the electrolyte bottle closed after use. Do not transfer electrolyte to other vessels.

Do not store electrolyte for longer than 2 years. The electrolyte must not be yellow in color.

Observe the use-by date on the label.

Avoid air bubbles when pouring electrolyte into the membrane cap.

1. Unscrew the measuring chamber from the shaft.
2. Hold the measuring chamber at an angle and pour in approx.

7 to 8 ml (0.24 to 0.27 fl.oz) of electrolyte, up to the internal thread.

3. Tap the filled chamber several times against a flat surface so that adherent air bubbles

on the inside can detach and rise.

4. Insert the sensor shaft vertically into the measuring chamber.
5. Slowly tighten the measuring chamber to the stop. While tightening, excess electrolyte

is forced out at the bottom of the sensor.

6. If necessary, use a cloth to wipe the measuring chamber and screw cap dry.

9.2.4  

Storing the sensor

If measurement is suspended for a short period of time and it can be guaranteed that the

sensor will be kept moist while in storage:

1. If the assembly is guaranteed not to empty out,

you may leave the sensor in the flow assembly.

2. If there is a possibility that the assembly may empty out,

Remove sensor from assembly .

3. To keep the membrane moist after the sensor has been removed, refill the protection

cap with electrolyte or clean water.

4. Fit protection cap on sensor →   26.

During longterm interruptions to measurement, particularly if dehydration is possible:

1. Remove sensor from assembly.
2. Clean sensor shaft and membrane cap with cold water and leave to dry.
3. Loosely screw on membrane cap up to the stop. This ensures that the membrane

remains slack.

4. Pour electrolyte or clean water into protection cap and attach →   25.

Summary of Contents for CCS240

Page 1: ...Products Solutions Services Operating Instructions CCS240 241 Sensors for measuring chlorine dioxide BA00114C 07 EN 14 18 71423118 2018 10 23...

Page 2: ......

Page 3: ...conditions 12 5 2 Mounting the sensor 13 5 3 Post installation check 15 6 Electrical connection 15 6 1 Connecting the sensor 16 6 2 Ensuring the degree of protection 18 6 3 Post connection check 18 7...

Page 4: ...tuation Failure to avoid the dangerous situation can result in a fatal or serious injury LCAUTION Causes consequences If necessary Consequences of non compliance if applicable Corrective action This s...

Page 5: ...CCS240 241 About this document Endress Hauser 5 1 2 1 Symbols on the device Symbol Meaning Reference to device documentation...

Page 6: ...the water are too low this could jeopardize the effectiveness of the disinfection On the other hand concentrations which are too high can lead to signs of corrosion and have an adverse effect on tast...

Page 7: ...he product is designed to meet state of the art safety requirements has been tested and left the factory in a condition in which it is safe to operate The relevant regulations and European standards h...

Page 8: ...Electron donation at the gold cathode and electron acceptance at the silver anode cause a current to flow which is proportional to the concentration of chlorine dioxide in the medium This process doe...

Page 9: ...esent which may form deposits the maximum flow rate is recommended Temperature Changes in the temperature of the medium affect the measured value Increases in temperature result in a higher measured v...

Page 10: ...ainst impact and moisture The original packaging offers the best protection Make sure to comply with the permitted ambient conditions If you have any questions please contact your supplier or your loc...

Page 11: ...Dieselstra e 24 D 70839 Gerlingen 4 2 5 Scope of delivery The delivery comprises Disinfection sensor membrane covered 25 mm with protection cap ready for use Bottle with electrolyte 50 ml 1 69 fl oz...

Page 12: ...5 1 Installation conditions 5 1 1 Installation position 5 1 2 Dimensions 12 0 47 74 2 91 88 3 46 160 6 30 6 5 0 26 148 5 83 25 0 98 36 1 42 29 1 14 A B A0037111 1 Dimensions in mm in A Version with T...

Page 13: ...owfit CCA250 flow assembly Optional extension cable CYK71 CAL REL REL1 REL1 ALARM REL2 REL2 E mg l 25 0 C 0 42 1 2 3 5 6 7 8 9 4 A0037976 2 Example of a measuring system 1 Flowfit CCA250 flow assembly...

Page 14: ...causes damage to the sensor s membrane cap If the protection cap is attached carefully remove it from sensor 1 When supplied to the customer and when in storage the sensor is fitted with a protection...

Page 15: ...ould also be filtered Additional installation instructions can be found in the Operating Instructions for the assembly 5 2 4 Installing sensor in other flow assemblies When using other flow assemblies...

Page 16: ...he inner shield The sensors have a fixed cable with a maximum length of 3 m 9 8 ft Connect the sensors to the transmitter according to the following diagram Sensor assignment Sensor core Transmitter t...

Page 17: ...perature sensor green 5 Temperature sensor yellow 6 Not used brown 6 1 1 Connecting the cable extension To extend the sensor connection use the VBC junction box Extend the connections as follows Chlor...

Page 18: ...eed for this product can no longer be guaranteed due for example to covers being left off or cable ends that are loose or insufficiently secured 6 3 Post connection check Device condition and specific...

Page 19: ...e of the working electrode Therefore after switching on the transmitter with the sensor connected you must wait until the polarization period has elapsed before starting calibration To achieve a stabl...

Page 20: ...ed 1 To perform a zero point adjustment operate the sensor for at least 15 minutes in chlorine free water using the assembly or protection cap as a vessel 2 Alternatively perform the zero point adjust...

Page 21: ...the DPD method you should first consider all possible malfunctions of the photometric DPD method see Operating Instructions for photometer If necessary repeat the DPD measurement several times Error...

Page 22: ...cording to DIN 19643 water may need to be replaced beforehand Display fluctuates considerably Hole in membrane Replace membrane cap External voltage in medium Measure voltage between the PML pin and t...

Page 23: ...eplace the electrolyte once per season or every 12 months or depending on the chlorine content on site 4 Calibrate the sensor if desired or when necessary 19 9 2 Maintenance tasks 9 2 1 Cleaning the s...

Page 24: ...110 9 Replacing the membrane 1 Measuring chamber 2 Membrane cap 3 Screw cap 1 Unscrew the measuring chamber 1 2 Unscrew the front screw cap 3 3 Remove the membrane cap 2 and replace it with a CCY14 WP...

Page 25: ...n the inside can detach and rise 4 Insert the sensor shaft vertically into the measuring chamber 5 Slowly tighten the measuring chamber to the stop While tightening excess electrolyte is forced out at...

Page 26: ...it protection cap on sensor 1 To keep the membrane moist after the sensor has been removed refill the protection cap with electrolyte or clean water A0037528 10 Carefully slide protection cap onto the...

Page 27: ...brown color of the anode has not changed If the color of the anode has changed e g if it is spotted white or silvery the sensor must be regenerated Send the sensor to the manufacturer for regeneratio...

Page 28: ...trip of the sheet in your hand polish the gold cathode on the strip using circular movements and rinse the sensor with deionized water 5 If necessary Top up the electrolyte in the measuring chamber an...

Page 29: ...0 minutes 9 If the value of several hundred nA is not reached Cover the beaker to avoid a rapid exchange of air 10 Once the 20 minutes have elapsed re install the sensor in the assembly 11 Open the me...

Page 30: ...ered or delivered As an ISO certified company and also due to legal regulations Endress Hauser is obliged to follow certain procedures when handling any returned products that have been in contact wit...

Page 31: ...le CPK9 Terminated measuring cable for connecting analog sensors with TOP68 plug in head Selection in accordance with product structure Ordering information Endress Hauser sales office or www endress...

Page 32: ...measuring cells Product Configurator on the product page www endress com coy8 Technical Information TI01244C Service kit CCS24x For chlorine dioxide sensors CCS240 CCS241 2 replacement cartridges ele...

Page 33: ...ecommissioning CCS240 30 min 10 min CCS241 90 min 45 min 12 3 Environment 12 3 1 Ambient temperature range 5 to 55 C 20 to 130 F 12 3 2 Storage temperature With electrolyte 5 to 50 C 40 to 120 F Witho...

Page 34: ...ited accuracy 12 4 4 Flow At least 30 l h 7 9 gal h in the CCA250 assembly 12 4 5 Minimum flow At least 15 cm s 0 5 ft s 12 5 Mechanical construction 12 5 1 Dimensions 12 12 5 2 Weight Approx 500 g 1...

Page 35: ...n check 19 I Incoming acceptance 10 Installation Check 15 Flow assembly 15 Installation position 12 Sensor 13 Installation position 12 L Long term drift 33 M Maintenance schedule 23 Maintenance tasks...

Page 36: ...the electrolyte 25 Regenerating 27 Replacing the membrane 24 storage 25 Spare parts 30 Storage 25 Storage temperature 33 Symbols 4 T Technical data Environment 33 Input 32 Mechanical construction 34 P...

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Page 40: ...www addresses endress com 71423118 71423118...

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