NIVELCO AnaCONT LE-100 Installation And Programming Manual

NIVELCO AnaCONT LE-100 Installation And Programming Manual Manual pdf 23 page image

BKI 11 ATEX 0012 X le00100a0600p_05 23 / 604. MAINTENANCE AND REAPAIRThe AnaCONT series do not require maintenance on a regular basis, but the electrode (depending on the application) may need to be checked, cleaned, calibratedand replaced regularly.Repairs during or after the warranty period are carried out exclusively at the Manufacturer’s. Equipments sent back for repairs should be cleaned or neutralised(disinfected) by the User.All sensors and electrodes including the NIVELCO recommended ones need proper storage, handling and calibration to have long life-time and give reliablemeasurement. Improper handling and lack of calibration will lead to unreliable measurement4.1. STORAGEDO sensors can be stored (under normal storage conditions) for a period of 12 month without shortening its lifecycle. The lifetime of pH and ORP electrodes ismaximum one year (storage + usage). Prominent ships the electrodes hydrated in a well sealed container with a 3mol/l KCl solution in it. As a result, the membraneremains wet and the electrode is in ready-to-use state. It is important to keep these containers as they are needed for storing the electrodes during calibration or incase of transportation. If for any reason the electrodes are taken out of the process they must be put back into the storage containers containing storage liquid.Notes: Never let the membrane and the diaphragm desiccated. Do not leave the electrode on open air longer than 10 minutes. If the electrode is warm it candesiccate even within a shorter period of time!4.2. PERIODIC SETTING, CALIBRATION AND VERIFICATIONThe electrode is exposed to different stresses, dependent on the measured medium, its ORP and pH value and the medium temperature.That is why the electrode needs to be recalibrated (its accuracy needs to be checked) between certain time intervals depending on the application utilizations. Thecalibration intervals may vary from few days to several weeks (max. 8 weeks).