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JUMO tecLine H2O2 / JUMO tecLine PAA Sensor for hydrogen peroxide or peracetic acid Type 202636 B 202636.0 Operating manual 2012-07-25/00585747...
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Screws coated with threadlocking paint must not be adjusted! The threadlocking paint must not be damaged. If it is, claims under the warranty will not be honored!
Contents Typographical conventions ............5 Warning signs ....................5 Note signs ....................5 General ..................6 Preface ......................6 Scope of application ..................6 Output signal ....................6 Device identification ..............7 Nameplate ....................7 Order details ....................7 Description ................8 Scope of delivery ..................8 Description ....................8 Details ......................8 Technical data ....................10 Mounting ..................
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Contents Maintenance ................27 Cleaning the electrode finger tip / replacing the membrane cap and electrolyte Remove scale that has accumulated on the membrane cap ....28 Storage / transport ..................28 Consumables / accessories ...............29 Calibration ................30 General .......................30 Calibration with a indicator/control instrument ..........30 Eliminating errors and faults ..........
1 Typographical conventions Warning signs Caution This sign is used when there may be danger to personnel if the instructions are ignored or not followed correctly! Attention This sign is used when there may be damage to equipment or data if the instructions are ignored or not followed correctly! Note signs Note...
The sensors can be connected directly to a suitable indicator and controller. The JUMO AQUIS 500 AS indicator/controller (type sheet 202568) and the JUMO dTRANS AS 02 indicator/controller (type sheet 202553) are especially suitable for combining with these sensors. They provide the voltage required for the power supply of the sensor and make for an easy way to calibrate the measuring system.
3 Device identification Nameplate JUMO GmbH & Co. KG JUMO tecLine H2O2 Fulda, Germany www.jumo.net Sensor for hydrogen peroxide Type: 202636/55-80 Measuring range: 0 to 10,000 mg/l (ppm) F No. 00000000 00 0 1226 0005 Serial No.: 01 01 0002 Note: The date of manufacture is encoded in the "F No."...
In addition, for measuring ranges 0 to 20,000 mg/l and 0 to 50,000 mg/l: device holder with forceps Description JUMO sensors for hydrogen peroxide or peracetic acid have membrane- covered, amperometric 2-electrode measuring systems. The working electrode (cathode) is made of gold (Au). The anode, which performs the function of a combined reference electrode and counter electrode, is made of silver (Ag) fitted with a coating of silver halide.
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4 Description 2-pin terminal for measuring cable connection Electrode shaft with integrated electronics O-ring Electrode finger (reference electrode) Measurement electrode Device holder (for measuring ranges 20,000 and 50,000 mg/l only) (10) Transparent cover (11) Membrane cap (12) Valve opening (13) Membrane Attention: - The stainless steel membrane disk holder must not be unscrewed.
Incident flow approx. 15cm / s velocity If the sensor is installed in a JUMO flow-through fitting 00392611, this is equivalent to a flow rate of about 30l / h. Measuring ranges 0 to 500 / 0 to 10,000 / 0 to 20,000 / 0 to 50,000 mg / l (ppm)
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4 Description Disruptive substances / cross sensitivities Hydrogen peroxide Chlorine is disruptive, peracetic acid is disruptive, ozone is disruptive, sulfides and phenols will destroy the measuring system Peracetic acid Chlorine is disruptive, ozone is disruptive, hydrogen peroxide is not disruptive Pressure max.
5 Mounting Notes Attention: - The measurement is only possible with a suitable flow-through fitting (for example a flow-through fitting for sensors according to type sheets 202630, 202631, 202634 and 202636, part no. 00392611; see type sheet 202636). - The sensor should be operated unpressurized if possible with free discharge of the process medium.
5 Mounting Flow-through fitting (part no. 00392611) 5.2.1 Mounting the fitting The flow-through fitting can be fastened to a wall with an optional support bracket (part no. 00455706) or fastened to an installation panel. Sensor Support bracket (optional) Connection G1/4 for hose ø 8mm x 6mm Fitting Removable measuring vessel (inspection glass)
5 Mounting 5.2.2 Sensor installation Overview (10) Sensor Inspection glass Union nut Inlet G1/4A or DN10 Flow-through fitting Stepped collar 1" Outlet G1/4A or DN10 Compression ring O-ring (10) O-ring Part of the fitting. Installation Caution: When assembling and installing the sensor (1) make certain the O- rings and threads are clean and fully operational! The transparent inspection glass (6) can be unscrewed from the fitting housing for maintenance purposes.
5 Mounting 2. After the sensor has been prepared in this manner, insert it into the flow- through fitting (3) and fasten it in place with the union nut (2). Flow monitoring 5.3.1 Minimum inflow For proper operation, the incident flow of the process medium on the sensor must be at least 15 cm/s.
6 Electrical connection Sensor for hydrogen peroxide or peracetic acid 6.1.1 General - Cable diameter approx. 4 mm - Conductor cross section 2 x 0.25mm > - Lay signal lines isolated from cables with voltages of 60 V - Use a shielded cable with twisted wires - Keep clear of large electrical installations 6.1.2 Terminal assignment Connection...
(2) returns an uncalibrated 4 to 20 mA signal. 6.3.2 Indicator/controller The signal can be further processed with the JUMO AQUIS 500 AS (1) or the JUMO dTRANS AS 02. The device provides the required supply voltage and makes for an easy way to calibrate the measuring system.
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6.3.4 Flow monitor If the flow monitor (3) indicates too small a flow from the sensor (2), the binary input of the JUMO AQUIS 500 AS (1) switches, the instrument goes to "Hold" and an alarm is generated. JUMO AQUIS 500 AS, type 202568/20-888-888-888-310-310-23/000,...
7 Startup Screwing the membrane cap off and on Caution: The electrolyte may spray out of the valve opening (5) when the membrane cap is screwed on! Wear safety goggles! Wash off sprayed liquid (aqueous solution of an alkali halide) under flowing water.
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7 Startup 1. Open the can with the membrane cap, drain the water and remove the membrane cap. There must only be one transparent cover (6) in the groove, closing the valve opening (see arrow). The second transparent cover must be visible as shown in the picture. 2.
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7 Startup 4. Hold the electrode shaft vertically and place it on the filled membrane cap. If necessary turn it counter-clockwise first until the thread engages, then slowly screw the electrode shaft into the membrane cap. Excess electrolyte will escape from the valve opening (5) during this process not keep the valve opening (arrow) closed! is screwed Make certain the membrane cap...
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7 Startup 7.2.2 Sensors types 202636/55-81 (85) and 202636/60-81 (85)* Danger: Many electrolytes contain diluted acids. Observe the warnings on the electrolyte bottle! Do not swallow electrolyte. If skin or eye comes in contact with the electrolyte, wash the affected parts with water. If eye irritation occurs, seek the attention of an ophthalmologist.
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7 Startup 3. Place the device holder on a clean, non-absorbent surface and moisten with electrolyte. 4. To mount the device holder in the membrane cap: Pick up the device holder moistened with electrolyte with the forceps (included with delivery). so it is Use the forceps to place the device holder in the filled membrane cap centered.
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7 Startup corner and while holding the tip of the electrode vertically, move the measuring cell two or three times over the abrasive paper. 7. To mount the sensor: Hold the electrode shaft vertically on the filled membrane cap with the device holder inserted.
7 Startup Attention: Always wait before screwing the membrane cap onto the sensor until just before it is installed in a fitting! The sensor is very sensitive when it is completely assembled! Screw on the membrane cap completely (as far as it will go)! The sealing O- ring (2) offers the first resistance against screwing in the membrane cap.
8 Maintenance Cleaning the electrode finger tip / replacing the membrane cap and electrolyte Attention: Do not rub the brown coating on the combined counter electrode and reference electrode (3) with special abrasive paper! Do not touch the electrode finger (3/4) or get it dirty! The steps must be performed exactly as they are described below! 1.
8 Maintenance 6. Screw the membrane cap onto the sensor shaft, See section 7.1 "Screwing the membrane cap off and on", page 20. Note: The service life of the electrolyte is 3 to 6 months. The service life of the membrane depends very much on the water quality.
(1x membrane cap, fine abrasive paper, device holder) Matching indicator/controller: JUMO AQUIS 500 AS, 00528718 Type: 202568/20-888-888-888-310-310-23/000 (for other versions see type and price sheet 202568) Matching transmitter / controller: JUMO dTRANS AS 02, 00550842 Type: 202553/01-8-01-4-0-00-23/000 (for other versions see type and price sheet 202553)
9 Calibration General Depending on requirements, the sensor should be checked and calibrated on a regular basis at set time intervals. Recommendation: weekly or more frequently depending on accuracy requirements. Note: The process for verification and calibration is as follows: 1.
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9 Calibration Check the saved slope Many transmitters/controllers (for example JUMO AQUIS 500 AS) have a "calibration log". Relevant data from each calibration is saved in the log. Attention: If the value for the slope falls below 40%, the membrane cap and electrolyte must be replaced and the electrode tip must be cleaned, See section 8.1...
10 Eliminating errors and faults Error/fault Possible cause Remedy Preventive measures (1) Sensor output Incorrect calibration. Repeat calibration If necessary calibrate signal too high or too using the DPD method the sensor more low. See "Initial condition", frequently. page 30. (2) Sensor output Settling time too short.
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10 Eliminating errors and faults Error/fault Possible cause Remedy Preventive measures (6) Sensor value and Incorrect controller Optimize the controller DPD value do not parameters. parameters. match, System circulation is Improve mixing. Make structural sensor values too slow. changes to ensure fluctuate: too much / more thorough mixing.
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JUMO GmbH & Co. KG JUMO Instrument Co. Ltd. JUMO Process Control, Inc. Street address: JUMO House 8 Technology Boulevard Moritz-Juchheim-Straße 1 Temple Bank, Riverway Canastota, NY 13032, USA 36039 Fulda, Germany Harlow - Essex CM20 2DY, UK Phone: 315-697-...
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