ECD T90 Instruction Manual
                                                                           | |
Contents
| 
58Fluoride Electrodesa. Moisten the end of the Q-tip with water and dip it in the alumina polishing powder to pick up asmall amount of the powder.b. Rub the polishing powder onto the fluoride crystal in a circular motion and moisten the tip ifnecessary to produce a liquid consistency more than a paste.c. Polish the electrode for about 30 seconds and examine the tip for a shiny surface, repeat ifnecessary.d. Rinse the electrode with distilled water and soak the electrode in a low ppm Calibration solutionfor a few minutes.e. Perform a Two Point Calibration.Other Solid State electrodes, Bromide, Cadmium, Chloride, Copper, Lead, Sulfide, Silver…a. Place a few drops of distilled water on the blue polishing strip to wet the polishing surface.b. Hold the electrode with the sensing surface facing up.c. Slide the polishing strip back and forth across the electrode tip, the sensing tip will be abradedand a new electrode surface will be generated.d. Polish the electrode for about 30 seconds and examine the tip for a shiny surface, repeat ifnecessary.e. Rinse the electrode with distilled water and soak the electrode in a low ppm Calibration solutionfor a few minutes.f. Perform a Two Point Calibration.8.3.7 DISSOLVED OXYGEN CARTRIDGESThe Teflon membrane of the Dissolved Oxygen sensors is fragile and should be cleaned using a soft cloth or anartist style paint brush while rinsing with a stream of water. Dilute dish washing detergents can be used toremove oily films. Solvents are not recommended as they could diffuse through the membrane and harm theelectrode. Strong acid/alkaline solutions should not harm the electrode but should only be used as a last resortbefore replacing the electrode.8.3.8 TRITON DO80 DISSOLVED OXYGENThe Triton DO80 sensor should receive maintenance on a regular basis. The maintenance interval should bedetermined empirically as it will depend on the installation conditions and the nature of the media beingmeasured. The interval should be no greater than every two months.Maintenance ProcedureThe typical procedure would include; Cleaning the sensor Check the measuring function:o Remove the sensor from the medium.o Clean and dry the sensor/membrane.o After about 10 minutes in air, measure the oxygen saturation index (without recalibration).o The measured value should be at 100 ± 4 % SAT If necessary, replace a defective membrane or one which cannot be cleaned any more. Recalibration, if necessary. |
Related manuals for ECD T90
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine