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5. Troubleshooting and Spare Parts

IRECTIVES AND

TANDARDS

BSERVED

Reference EC directives:

•

EMC Directive (2014/30 / EU)

•

ROHS Directive (2011/65 / EU)

International standards:

•

EN 61010-1

•

EN 60335-1

•

EN 60529

•

EN 61326-1

NOTICE

We reserve the right to make changes at any time and without notice in

colors, materials, specifications and designs.

Содержание NCL C10

Страница 1: ...B EN 05 2021 Free and Total Chlorine Sensors NCL and NCT model PLEASE READ CAREFULLY THE FOLLOWING INSTRUCTIONS FOR USE DO NOT THROW THEM AWAY THE SYSTEM MANAGER WILL BE RESPONSIBLE FOR ANY DAMAGE CAUSED BY INSTALLATION OR MANAGEMENT ERRORS ...

Страница 2: ...VIA FRANCESCO ANTOLISEI 25 00173 ROME ITALY 39 06 4576 3210 www tsens biz info tsens eu ...

Страница 3: ...TMENT 10 3 ELECTRICAL CONNECTIONS 12 3 1 ELECTRICAL INSTALLATION OF VOLTAGE OUTPUT 12 3 2 ELECTRICAL INSTALLATION OF CURRENT OUTPUT 14 4 ACTIVATION AND MAINTENANCE OF THE SENSOR 16 4 1 SENSOR COMMISSIONING 16 4 2 CALIBRATION 16 4 3 ELECTRODE UNIT AND CAP MAINTENANCE 18 4 4 PUT THE PROBE OUT OF SERVICE 20 4 5 WORKING PARAMETERS AND SENSOR CHARACTERISTICS 21 5 TROUBLESHOOTING AND SPARE PARTS 22 5 1 ...

Страница 4: ......

Страница 5: ...trical output for the different sensors to which this manual can be applied The range of sensors for the measurement of free and total chlorine has a structure of the type with three electrodes two of which are covered by a membrane cap and immersed in a gel electrolytic solution The range allows to measure the concentration of free total chlorine in surfactant free water These devices can be used...

Страница 6: ...e 0 05 20 00 0 01 0 2000 mV NCT T10 Total Chlorine 0 05 10 00 0 01 0 2000 mV NCT T5 Total Chlorine 0 05 5 00 0 01 0 2000 mV NCT T2 Total Chlorine 0 01 2 00 0 005 0 2000 mV NCT C20 Total Chlorine 0 05 20 00 0 01 4 20 mA NCT C10 Total Chlorine 0 05 10 00 0 01 4 20 mA NCT C5 Total Chlorine 0 05 5 00 0 01 4 20 mA NCT C2 Total Chlorine 0 01 2 00 0 01 4 20 mA NCL T20 SW Free Chlorine 0 05 20 00 0 01 0 2...

Страница 7: ... as shown in Figure 1 and in Figure 2 in which the standard kit consists of I sensor II upper element not present in the version with voltage output III membrane cap IV bottle of gel electrolyte 100ml V paper for polishing the gold electrode VI user manual Figure 1 version with current output standard supply ...

Страница 8: ...1 Introduction 4 Figure 2 version with voltage output standard supply ...

Страница 9: ... composing the sensor are shown in Figure 3 Position Description 1 Sensor body 2 Connector 3 Counter electrode 4 Reference Electrode 5 Working electrode 6 O Ring 7 Cap 8 Membrane 9 Tubular gasket Figure 3 Sensor structure and description of its components ...

Страница 10: ... cap with the gel electrolyte solution contained in the bottle present in the package The gel electrolyte must reach the edge of the cap as reported in Figure 4 leaving the tubular gasket displaced from its place Insert the probe vertically into the cap as shown in Figure 5 on the next page taking care during the assembly phase not to cover the excess gel outlet holes with your fingers This is in ...

Страница 11: ...he gel solution in the cap For this reason it is useful to slowly screw the cap to the probe and not to shake the bottle before use After filling or restoring the electrolyte solution the probe takes about an hour to resume normal operation RESTORING THE ELECTROLYTIC SOLUTION It is recommended to calibrate the instrument to which the probe is connected after the operation has been restored It is r...

Страница 12: ...d lead to malfunction of the probe 2 3 INFORMATION ON THE ELECTROLYTE GEL KEEP THE PRODUCT OUT OF REACH OF CHILDREN ELECTROLYTE GEL DO NOT SHAKE THE BOTTLE BEFORE USE The electrolyte is sensitive to oxidation always keep the bottle of electrolyte closed after use Do not transfer the electrolyte into other containers The electrolyte must not be stored beyond the permitted terms for the expiry date ...

Страница 13: ...re available on the manufacturer s website at http www aedes info prodotto asp 2 4 MOUNTING ON THE PROBE HOLDER Insert the probe into a dedicated probe holder in the appropriate housing A distance of about 2 cm must be ensured between the membrane and the bottom of the probe holder as indicated in Figure 6 on the next page in order to ensure optimal operation of the probe The phase of installing t...

Страница 14: ... the probe the flow rate of fluid passing through the probe holder must be between 30 l h and 60 l h and with a pressure between 0 bar and 1 bar the recommended working range for probe is 0 3 0 5 bar WATER FLOW Do not exceed the recommended working range do not use the sensor with a lower or higher range than the indicated limits before commissioning the probe the flow rate must be measured using ...

Страница 15: ...2 Installation 11 Figure 6 installation of the probe in a probe holder where the optimal operating distance is shown ...

Страница 16: ...measuring instrument to use the dedicated electric cable see paragraph 5 1 page 21 to identify the code to be purchased separately The cable is made up on one side of the connector and on the other of the wires as in Figure 7 to be connected as shown in Table 2 For the electrical installation of the probe it is necessary to connect the cable to the measuring instrument and then couple the connecto...

Страница 17: ...tions Terminal Color Function Value 1 Green Signal Vout 0 2000 mVdc 2 Yellow Signal GND 0 3 Brown Power supply Vin 10 30 Vdc 4 White Power supply GND 0 Single Power Supply Terminal Color Function Value 1 Green Signal Vout 0 2000 mVdc 2 Yellow Signal GND 0 3 Brown Power supply Vin 5 15 Vdc 4 White Power supply Vin 5 15 Vdc Single Power Supply ...

Страница 18: ...onnector and pass the measuring cable 1 through it 3 Uncover the ends of the cable by 0 5 cm apply the cable lugs ϕmax 0 5 mm2 and connect them to the 2 conductor connection respecting the polarity indicated on the terminal 4 4 Fully insert the upper element of the sensor 3 on the probe body 5 and tighten it by turning clockwise until it stops 5 Insert the measurement cable as far as possible into...

Страница 19: ...4 Activation and Maintenance of the Sensor 15 Figure 8 Electrical installation for probes with two wire current output ...

Страница 20: ...red for the probe to provide a stable signal Phase Time h First Installation 1 24 Subsequent installations 1 24 Gel and or Cap replacement 1 3 4 2 CALIBRATION The probe calibration must be carried out once the probe signal is stable therefore not before the activation times indicated in Table 3 The calibration of the measuring instrument connected to the probe must be carried out and checked perio...

Страница 21: ...PD 1 measurement in the measuring instrument to which the probe is connected respecting the procedure provided in the instrument manual If it is necessary to carry out the zero calibration of the instrument 1 Remove the sensor from the probe holder taking care not to disconnect it from the power supply 2 Place the sensor in a container containing clean water free of chlorine and oxidants e g natur...

Страница 22: ... recommended to clean it using the special paper in the package The paper has a shiny and a matte side the matte side is the one to be used on the working electrode as shown in Figure 10 In the event that this operation does not lead to improvements please contact the assistance center Do not use the paper on the membrane or other parts MAINTENANCE INFORMATION To ensure correct operation of the pr...

Страница 23: ...ivation and Maintenance of the Sensor 19 Figure 9 Working electrode before and after cleaning Figure 10 Cleaning the working electrode with abrasive paper Figure 11 Do not use abrasive paper on the membrane ...

Страница 24: ...Do not touch the electrodes with your fingers 7 Leave the cap and the probe to dry in a place protected from dust Do not use air jets 8 To protect the electrodes during storage screw the cap to the probe without tightening 9 To protect the sensor keep it in its specific box INSTALLATION INSTRUCTIONS Before reactivating a probe that has been taken out of service for a long time it is recommended to...

Страница 25: ...ture must not exceed 45 C If the water temperature is close to 0 C it is essential for the operation of the probe that there are no ice crystals in the flow The value measured by the sensor is not very dependent on the pH The pH range optimal for operation is between 4 pH and 10 pH The reference electrode can only be cleaned with water and left to dry on its own without the aid of cloths or paper ...

Страница 26: ...trol instrument Power line and electrical connections Hydraulic line and related fittings Sensor Before starting the troubleshooting make sure that the operating conditions below are met If the measured values of the sensor deviate significantly from the measured value of the DPD method all possible errors of the photometric DPD method must first be considered If necessary repeat the DPD measureme...

Страница 27: ... the regeneration Contaminated or depleted gel electrolyte Replace the gel in the cap with the one supplied if it is exhausted see spare parts Check the integrity of the reference electrode Presence of air bubbles on the membrane Replace the gel in the cap with the one supplied if it is exhausted see spare parts Check the integrity of the reference electrode Incorrect calibration of the instrument...

Страница 28: ...e 30 60 l h and 0 3 0 5 bar If the pressures are greater than those indicated insert a valve to adjust the pressure upstream of the probe holder Replace the membrane cap See spare parts If the pressures are lower than those required try to throttle the system with a valve downstream of the probe holder Measurement deviation from the DPD value Probe installed for too short a time Wait another time ...

Страница 29: ...rewed cap which caused water infiltration and or leakage of gel electrolyte Clean the working electrode and replace the electrolyte gel Carefully screw the cap back on and reposition the tubular gasket correctly It may be necessary to re calibrate the instrument to which the probe is connected ...

Страница 30: ...ERVED Reference EC directives EMC Directive 2014 30 EU ROHS Directive 2011 65 EU International standards EN 61010 1 EN 60335 1 EN 60529 EN 61326 1 NOTICE We reserve the right to make changes at any time and without notice in colors materials specifications and designs ...

Страница 31: ...7 Notes 27 7 NOTES ...

Страница 32: ...VIA FRANCESCO ANTOLISEI 25 00173 ROME ITALY 39 06 4576 3210 www tsens biz info tsens eu ...

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