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This symbol stands for a cross-reference to a specific page (e.g. Page 1). È å 2 This symbol stands for a cross-reference to a specific graphic (e.g. Fig. 2). Other symbols Additional information, tips Permitted or recommended Forbidden or not recommended Endress+Hauser...
Return Note the following prior to return: • Contact your Endress+Hauser sales center for information on the different modes of dispatch. • Enclose a completed "Declaration of contamination" form. You will find a template for this form at the end of these instructions.
ISEmax CAS40D Identification Identification Nameplate You can find the following information on the nameplate. • Manufacturer details • Order code • Extended order code • Serial number • Operating conditions • Safety information symbols Compare the order code on the nameplate with your order.
Installation ISEmax CAS40D Installation Incoming acceptance, transport, storage • Make sure the packaging is undamaged! • Notify the supplier of any damage to the packaging. Keep the damaged packaging until the matter has been settled. • Make sure the contents are undamaged! •...
ISEmax CAS40D Installation Installation instructions 3.3.1 Electrode installation NOTICE Electrode protection caps Drying out of pH electrode or damage to ion-selective membrane ► Remove the protection cap from the pH electrode before immersing the sensor in the medium. ► Retain the protection cap.
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Installation ISEmax CAS40D 3.3.2 Installing at the measuring point NOTICE Compressed air Damage to the relay ► The compressed air supply must not exceed 3.5 bar (50 psi). ► The compressed air must be supplied through an air filter (5 μm). This filter is already installed in the optional cleaning unit (-->...
Installation ISEmax CAS40D Post-installation check • After mounting, check all the connections to ensure they are secure and leak-tight. • Check all cables and hoses for damage. • Check whether the cables are routed such that they are free from electromagnetic interference influences.
ISEmax CAS40D Wiring Wiring WARNING Device is live Incorrect connection may result in injury or death. ► The electrical connection may only be performed by an electrical technician. ► The electrical technician must have read and understood these Operating Instructions and must follow the instructions they contain.
Wiring ISEmax CAS40D Electrode identification Electrode Color of membrane ring and Cable identification marking on screw head Ammonium Nitrate 1, 2 or 3 Potassium Chloride pH, ORP (incl. reference) no marking Color codes as per IEC 757 Post-connection check Device status and specifications...
ISEmax CAS40D Calibration Calibration When determining ion concentrations potentiometrically, the voltage supplied by the electrochemical measuring cell (consisting of the ion-selective electrode and a reference electrode) within the "linear" or preferably "NERNST“ range is proportional to the logarithm of the concentration (or activity) of the ions to be determined.
Calibration ISEmax CAS40D Single-point calibration If you use the sensor in the inlet to the sludge activation, you have to use a higher standard concentration for the calibration, e.g. 50 mg/l. Preparing to calibrate Take 3 l (0.79 US gal.) of sample from the sewage treatment plant outlet.
ISEmax CAS40D Maintenance Maintenance Take all the necessary precautions in time to ensure the operational safety and reliability of the entire measuring system. NOTICE Effects on process and process control ► When carrying out any work on the system, take into account possible repercussions for process control or the process itself.
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Maintenance ISEmax CAS40D a0015225 a0015226 a0015227 a0015229 Fig. 8: Release protection Fig. 9: Remove coupling Fig. 10: Release electrode Fig. 11: Remove electrode guard cable Replacing the membrane cap and electrolyte Unscrew the membrane cap from the electrode (→ å 12).
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ISEmax CAS40D Maintenance Installing the electrode Screw the electrode into the electrode holder, and hand-tighten using the socket wrench, SW17, (→ å 11, but in the opposite direction). Connect the electrode connector to the cable (→ å 10, opposite direction).
Accessories ISEmax CAS40D Accessories The following are the most important accessories available at the time this documentation was issued. For accessories not listed here, please contact your service or sales office. Assembly holder Flexdip CYH112 holder for Flexdip CYA112 water and wastewater fittings •...
CAY40- Complete order code 7.4.2 High-quality buffer solutions from Endress+Hauser - CPY20 The secondary buffer solutions have been referenced to primary reference material of the PTB (German Federal Physico-technical Institute) and to standard reference material of NIST (National Institute of Standards and Technology) according to DIN 19266 by a DKD (German Calibration Service) accredited laboratory.
Accessories ISEmax CAS40D Compressed air cleaning Not suitable for continuous operation! • Operating interval: max. 3 minutes cleaning, break for at least six times the cleaning time. • Avoid condensation in the pressurized hoses. Cleaning unit in the housing • 230 V or 115V, IP 65 •...
ISEmax CAS40D Troubleshooting Troubleshooting Troubleshooting instructions For troubleshooting purposes, you must take the entire measuring point into account: • Transmitter • Electrical connections and cables • Assembly • Sensor The possible causes of error in the following table relate mainly to the sensor.
Troubleshooting ISEmax CAS40D Spare parts a0015217 Fig. 15: Exploded view CAS40D Name Order number Kit CYH112 suspension bracket for chain 71096714 Kit CAS40D multi-conductor cable for electrodes 71130358 3, 7 Kit CAS40D seal set 71130360 • Flat seal for electrode holder (3) •...
Return Note the following prior to return: • Contact your Endress+Hauser sales center for information on the different modes of dispatch. • Enclose a completed "Declaration of contamination" form. You will find a template for this form at the end of these instructions.
ISEmax CAS40D Technical data Compensation 1)2) 1)3) Sensor Temperature Potassium Chloride Ammonium pH 8.3 to 10 1 to 1000 mg/l (ppm) Nitrate 10 to 1000 mg/l (ppm) 2 to 40 ˚C (36 to 100 ˚F) Potassium Chloride The fluctuations in concentration, not the absolute value, are the determining factor Recommendation: Use as compensation electrode for potassium concentrations >...
Technical data ISEmax CAS40D Process Process temperature range 2 to 40 ˚C (36 to 100 ˚F) Process pressure 400 mbar (160 inH O) max. permitted overpressure pH value of the medium • Ammonium: pH 5 to 8.3 (without pH compensation) pH 5 to 10 (with pH compensation) •...
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Erklärung zur Kontamination und Reinigung Please reference the Return Authorization Number (RA#), obtained from Endress+Hauser, on all paperwork and mark the RA# clearly on the outside of the box. If this procedure is not followed, it may result in the refusal of the package at our facility.