Intelligent sensor for dissolved oxygen with digital interface and analog output (52 pages)
Summary of Contents for JUMO tecLine ClO2
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JUMO tecLine ClO and O Sensors for chlorine dioxide (ClO ) and ozone (O Typ 202634 Operating Manual 20263400T90Z001K000 V3.00/EN/00585740/2022-10-28...
Introduction 1 Introduction Safety information 1.1.1 General Information This manual contains information that must be observed in the interest of your own safety and to avoid material damage. This information is supported by symbols which are used in this manual as indicated. Please read this manual before starting up the device.
Description 2 Description Areas of application These membrane-covered amperometric sensors are used to determine the concentration of chlorine dioxide or ozone in water. Typical areas of application include the monitoring of swimming pool, drinking, service, process, and cooling water. The sensors with hydrophobic PTFE membranes (types 202634/45, /65, /50, and /60) can only be used in media of swimming pool or drinking water quality.
/52 (output signal of RS422/485, data logger using optional 4 to 20 mA) boards JUMO AQUIS touch S/P Modular multichannel measuring devices All types 202634 for liquid analysis with integrated controller and paperless recorder, USB host, USB de- vice, Modbus, PROFIBUS DP, and Ether-...
2 Description Sensor details Types 202634/45 and /50 Types 202634/60 and /65 4 to 20 mA version Modbus RTU version (12) (11) (13) (10) Valve opening PTFE membrane Membrane cap Transparent cover (hose ring) Measuring electrode Electrode finger (reference electrode) O-ring Sensor shaft with integrated electronic components 2-pole terminal for measuring cable connection...
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2 Description Types 202634/47 and /52 Types 202634/62 and /67 4 to 20 mA version, Modbus RTU version, membrane that is insensitive to chemicals membrane that is insensitive to chemicals Membrane disk Membrane holder (stainless steel) Membrane cap Working electrode of the electrode finger Reference electrode of the electrode finger Pressure equalization opening O-ring...
2 Description Important information for use 2.6.1 Notes for all types NOTICE! An unsuitable measuring environment may produce incorrect measurement results. Using the sensors without the use of suitable flow fittings will lead to incorrect measurement results. In order to ensure error-free measurements, the sensors must be installed in suitable flow fittings, see chapter 4.2 "Combination fitting (type 202811/10)", Page 19 or chapter 4.3 "Flow fitting for mem- brane-covered sensors (type 202811/30)", Page 22.
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2 Description NOTICE! Irritating substances may produce incorrect measurement results. Using the sensors to measure media containing surfactants may lead to incorrect measurement results. In order to ensure error-free measurements, the measurement media must not contain surfactants (surface-active substances e.g. from detergents, cleaning agents or disinfectants). NOTICE! Harmful substances may lead to incorrect measurement results and cause damage to the mem- brane caps.
Identifying the device version 3 Identifying the device version Nameplate Position The nameplate is glued to the top of the sensor. Table of contents The nameplate contains important information. This includes: Description Designation on the nameplate Example Device type Type 202634/45-20 Fabrication number F no.
3 Identifying the device version Order details Basic type 202634 JUMO tecLine ClO2 + O3 Sensors for chlorine dioxide and ozone Basic type extension Sensor for chlorine dioxide, output signal 4 to 20 mA Sensor for chlorine dioxide, output signal 4 to 20 mA, insensitive to chemicals and surfactants...
10 m connecting cable, 5-pole M12 connector, A-coded on the ferrules 00638341 When connecting multiple sensors with a digital interface (type 20263x) to the JUMO AQUIS touch S/P, the JUMO digiLine hub and an external power supply (e.g. part no. 00661597) are required. For further accessories see data sheet 202705.
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3 Identifying the device version Transmitters/controllers for sensors with a digital interface (type 202634/60, /62, /65, /67) Designation Part no. JUMO AQUIS 500 RS, type 202569/20-654-888-888-310-310-23/000 00602275 (for further versions, please refer to data sheet 202569) JUMO AQUIS touch S/P...
Mounting 4 Mounting Important information NOTICE! An unsuitable measuring environment may produce incorrect measurement results. Using the sensors without the use of suitable flow fittings will lead to incorrect measurement results. In order to ensure error-free measurements, the sensors must be installed in suitable flow fittings, see chapter 4.2 "Combination fitting (type 202811/10)", Page 19 or chapter 4.3 "Flow fitting for mem- brane-covered sensors (type 202811/30)", Page 22.
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4 Mounting NOTICE! Impurities may produce incorrect measurement results. Using the sensors to measure media containing oxidants, reducing agents or corrosion protection agents may lead to incorrect measurement results. Oxidizing agents, reducing agents, corrosion inhibitors, and substances which result in cross sensi- tivities with the sensors (see information in chapter 11 "Technical data", Page 51) must be avoided in the measurement medium.
4 Mounting Combination fitting (type 202811/10) 4.2.1 Mounting the combination fitting The combination fitting can be mounted on a wall or an installation panel with the mounting holes (1) using two commercially available M5 cylinder head screws (dia. 5.5 mm, countersink according to DIN 974-1: dia.
4 Mounting (12) Sealing screw G 1/4 (opening for optional mini ball valve for sampling) (13) Indicator for sensor immersion depth (14) Temperature probe (15) Hose connection for measuring water inflow, connection to fitting G 1/4, for hose 6 × 8 (inner dia. 6 mm, outer dia. 8 mm) optionally 4.2.2 Installing the sensor...
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4 Mounting Installation NOTICE! Leaks due to incorrect installation Dirt on the thread of the union nut (4), on the pressure ring (7), on the stepped collar (8), on the O-ring (9) or a hardened O-ring may cause the fitting to leak when the sensor (5) is installed. ...
4 Mounting Flow fitting for membrane-covered sensors (type 202811/30) 4.3.1 Mounting the fitting The flow fitting can be mounted to a wall or an installation panel using an optional mounting bracket (part no.: 00455706). Sensor Mounting bracket (optional) Connection G 1/4, for hose Ø 8 mm × 6 mm Fitting Removable measuring vessel (inspection glass)
4 Mounting 4.3.2 Installing the sensor Overview (10) Sensor Inspection glass Union nut G 1/4 A or DN 10 supply lead Fitting housing 1-inch stepped collar G 1/4 A or DN 10 outlet lead Pressure ring O-ring (10) O-ring Component of the flow fitting Installation NOTICE! Incorrect installation may cause leaks.
4 Mounting Flow monitor for disinfection measurands (type 202811/20) 4.4.1 Mounting the flow monitor The flow monitor can be mounted to a wall or an installation panel using the PP-40 pipe clip (2) included in the scope of delivery. Ø 13.5 39.5 Hose connection for measuring water outflow, connection G 1/4, for hose 6 ×...
Electrical connection 5 Electrical connection Sensors with an output signal of 4 to 20 mA (types 202634/45, /47, /50, and /52) 5.1.1 General requirements • Cable diameter of approx. 4 mm • Conductor cross section of 2 x 0.25 mm •...
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5 Electrical connection NOTE! Screws protected by locking varnish must not be adjusted. Any damage to the locking varnish will result in the loss of the manufacturer's guarantee.
5.2.1 General requirements • Use connecting cable PN 00638333 (1.5 m) or PN 00638337 (5 m) or PN 00638341 (10 m) for con- necting to JUMO AQUIS 500 RS or JUMO AQUIS touch S/P 5.2.2 Terminal assignment Function Pin on M12 flange connector...
Flow monitoring If the flow monitor (4) signals that the sensor (3) inflow is too low, the input to the JUMO AQUIS 500 AS (5) is switched to binary - the device transitions to "Hold" status and an alarm is output.
Startup 6 Startup Important notes for screwing the membrane cap on and off (1) Sensor shaft (2) O-ring (5) (6) (7) (3) Electrode finger (4) Electrode tip (5) Valve opening (6) Valve cover (7) Membrane cap (8) Membrane Example: type 202634/45 NOTICE! Touching the electrode finger may damage it Touching and contaminating the electrode finger (3, 4) can damage it, making the sensor unusable.
6 Startup Initial filling and installation of the membrane cap 6.2.1 Types with hydrophobic membranes (202634/45, /50, /60, /65) NOTE! The service life of the reference electrolyte is around 3 to 6 months. (1) Sensor shaft (2) O-ring (3) Electrode finger (4) Electrode tip (5) Valve opening (6) Valve cover...
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6 Startup NOTE! In order for the sensor to function correctly, the membrane cap must be fully screwed onto the sensor. The first screw-in resistance is the sealing O-ring (2). The membrane cap must be screwed on further until it comes into contact with the sensor shaft (1). NOTICE! Damage to the membrane due to mechanical influences When the sensor is ready to take a measurement (membrane cap fully screwed on), the distance be-...
6 Startup 6.2.2 Types with membranes that are insensitive to chemicals (202634/47, /52, /62, /67) NOTE! The service life of the reference electrolyte is around 3 to 6 months. (1) Sensor shaft (2) Pressure equaliza- tion opening (3) Electrode finger (4) Membrane cap (5) Membrane holder (6) Membrane...
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6 Startup Holding the sensor shaft with the electrode finger vertically, slowly in- sert it into the filled membrane cap and fit it onto the membrane cap. Turn the sensor body counter-clockwise until the thread has engaged. Slowly screw the sensor shaft into the membrane cap in a clockwise direction completely up to the limit stop.
6 Startup Minimum inflow NOTE! The flow rate from the measurement medium must be at least 15 cm/s in order for the sensor to work correctly. The minimum flow rate in the combination fitting or the flow fitting is 30 l/h. Values measured by the sensors below the minimum inflow speed are too low.
3. Calibrate the indicating device on the basis of the reference value; refer to the operating manual for the transmitter/controller used. Checking the determined slope Many transmitters/controllers (e.g. the JUMO AQUIS 500 AS) have a "calibration logbook". This logbook is used to record the relevant data during every calibration. NOTE! If the value for the nominal slope is under 30%, the membrane cap and the electrolyte must be replaced and the electrode tip must be cleaned;...
Removal 8 Removal NOTE! Removing the sensor may cause an incorrect measured value at the input of the transmitter/controller and cause uncontrolled dosing in a control loop. Before removing the sensor: 1. Switch off the transmitter/controller or switch to manual mode. 2.
Maintenance 9 Maintenance Replacing the electrolyte 9.1.1 Types with hydrophobic membranes (202634/45, /50, /60, /65) The electrolyte should be replaced every three to six months and after calibration performed due to instable measuring values or a value that is too low. (1) Sensor shaft (2) O-ring (3) Electrode finger...
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9 Maintenance Place the membrane cap (7) on a clean surface and fill up to the brim with bubble-free electrolyte (contained in the scope of delivery of the sensor) and place it back on the support surface. Holding the sensor shaft vertically, slowly insert it into the filled mem- brane cap and fit it onto the membrane cap.
9 Maintenance 9.1.2 Types with membranes that are insensitive to chemicals (202634/47, /52, /62, /67) The electrolyte should be replaced every three to six months and after calibration performed due to instable measuring values or a value that is too low. (1) Sensor shaft (2) Pressure equaliza- tion opening...
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9 Maintenance Use the special abrasive paper included in the scope of delivery to clean just the tip of the dry electrode finger (=measuring electrode). To do so, place the special abrasive paper on a level surface with the rough side facing upward and hold in place at the ends. While holding the sensor vertically, run the tip of the electrode over the abrasive paper at least two times.
9 Maintenance Replacing the membrane cap 9.2.1 Types with hydrophobic membranes (202634/45, /50, /60, /65) The membrane cap should be replaced regularly once per year and after each calibration per- formed due to instable measuring values or a value that is too low. (1) Sensor shaft (2) O-ring (3) Electrode finger...
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9 Maintenance Place the new membrane cap on a clean surface and fill up to the brim with bubble-free electrolyte (contained in the scope of delivery of the sensor). Holding the sensor shaft vertically, slowly insert it into the filled mem- brane cap and fit it onto the membrane cap.
9 Maintenance 9.2.2 Types with membranes that are insensitive to chemicals (202634/47, /52, /62, /67) The membrane cap should be renewed under the following conditions: • regularly after one year of operation • if the measured values are still too low or instable after a prior calibration (1) Sensor shaft (2) Pressure equaliza- tion opening...
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9 Maintenance Use the special abrasive paper included in the scope of delivery to clean just the tip of the dry electrode finger (=measuring electrode). To do so, place the special abrasive paper on a level surface with the rough side facing upward and hold in place at the ends. While holding the sensor vertically, run the tip of the electrode over the abrasive paper at least two times.
9 Maintenance Removing calcium deposits from the membrane cap NOTICE! Damage to the membrane due to overpressure or underpressure The membrane is extremely sensitive. Screwing the membrane cap on and off can create overpressure or underpressure in the cap which can damage the membrane. ...
9 Maintenance Consumable material Spare part sets and electrolytes Designation Part no. Spare part set for 202634/45, /50, /60 and /65 (1 x membrane cap, fine abrasive paper) 00392331 Spare part set for 202634/47 and /67 (1 x membrane cap, fine abrasive paper) 00753804 Spare part set for 202634/52 and /62 (1 x membrane cap, fine abrasive paper) 00762731...
10 Overcoming errors and malfunctions Overcoming errors and malfunctions 10.1 General troubleshooting Error/fault Possible cause Remedy Preventative measures Output signal of the sensor Incorrect calibration Repeat calibration accord- Calibrate the sensor more fre- is too low or too high ing to the DPD method; re- quently, if required fer to chapter 7.2 "Calibrating...
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10 Overcoming errors and malfunctions Error/fault Possible cause Remedy Preventative measures Sensor displays unusually The membrane is par- Replace the membrane cap Take measures to improve the sluggish response behavior tially blocked by pollut- quality of the water ants such as calcium or oil.
10 Overcoming errors and malfunctions 10.2 Specific troubleshooting on the sensor If the electrode finger has a bright silvery or white appearance, the sensor must be reconditioned by the manufacturer. Brown-gray colors are normal. 10.2.1 Testing the leak-tightness of the membrane cap 1.
10 Overcoming errors and malfunctions 6. Read the original signal on the measuring device/controller or measure it with a digital multimeter. 7. The sensor signal should be around the zero point. – If the sensor signal tends towards zero, the zero point is very likely to be okay. –...
Approx 1 h for initial startup Inflow speed Approx. 15 cm/s (corresponds to a totalized flow rate of approx. 30 l/h when in- stalled in the JUMO flow fitting (part no.: 00392611)) Measuring ranges 0.05 to 0.5 mg/l (ppm) 0.05 to 2 mg/l (ppm) 0,05 bis 5 mg/l (ppm) 0.05 to 10 mg/l (ppm)
Approx 1 h for initial startup Inflow speed Approx. 15 cm/s (corresponds to a totalized flow rate of approx. 30 l/h when in- stalled in the JUMO flow fitting (part no.: 00392611)) Measuring ranges 0.05 to 2 mg/l (ppm) 0.05 to 20 mg/l (ppm) Dissolution Measuring range 0.5 mg/l...
Approx 1 h for initial startup Inflow speed Approx. 15 cm/s (corresponds to a totalized flow rate of approx. 30 l/h when in- stalled in the JUMO flow fitting (part no.: 00392611)) Measuring ranges 0.05 to 2 mg/l (ppm) 0.05 to 5 mg/l (ppm) 0.05 to 10 mg/l (ppm)
Approx 1 h for initial startup Inflow speed Approx. 15 cm/s (corresponds to a totalized flow rate of approx. 30 l/h when in- stalled in the JUMO flow fitting (part no.: 00392611)) Measuring ranges 0.05 to 2 mg/l (ppm) 0.05 to 20 mg/l (ppm)
Approx 1 h for initial startup Inflow speed Approx. 15 cm/s (corresponds to a totalized flow rate of approx. 30 l/h when in- stalled in the JUMO flow fitting (part no.: 00392611)) Measuring ranges 0.05 to 0.5 mg/l (ppm) 0.05 to 2 mg/l (ppm) 0.05 to 10 mg/l (ppm)
Approx 1 h for initial startup Inflow speed Approx. 15 cm/s (corresponds to a totalized flow rate of approx. 30 l/h when in- stalled in the JUMO flow fitting (part no.: 00392611)) Measuring ranges 0.005 to 2 mg/l (ppm) 0.05 to 10 mg/l (ppm)
Approx 1 h for initial startup Inflow speed Approx. 15 cm/s (corresponds to a totalized flow rate of approx. 30 l/h when in- stalled in the JUMO flow fitting (part no.: 00392611)) Measuring ranges 0.05 to 2 mg/l (ppm) 0.05 to 10 mg/l (ppm)
Approx 1 h for initial startup Inflow speed Approx. 15 cm/s (corresponds to a totalized flow rate of approx. 30 l/h when in- stalled in the JUMO flow fitting (part no.: 00392611)) Measuring ranges 0.05 to 2 mg/l (ppm) 0.05 to 10 mg/l (ppm)
11 Technical data 11.5 All sensors 11.5.1 Maintenance, storage, and transport Maintenance Inspection of the measuring Regularly, at least once a week signal Replacement of the membrane Once a year (depending on the quality of the water) Replacement of the electrolyte Every 3 to 6 months Storage Sensor...
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JUMO GmbH & Co. KG JUMO Instrument Co. Ltd. JUMO Process Control, Inc. Street address: JUMO House 6724 Joy Road Moritz-Juchheim-Straße 1 Temple Bank, Riverway East Syracuse, NY 13057, USA 36039 Fulda, Germany Harlow, Essex, CM20 2DY, UK Delivery address:...
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