RAE MiniRAE 3000 User's Guide - Geotech

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MiniRAE 3000 User’s GuideCleaning The PID SensorPlace the entire PID sensor module into GC grade methanol. It is highlyrecommended that an ultrasound bath to be used to clean the sensor forat least 15 minutes. Then dry the sensor thoroughly. Never touch theelectrodes of the sensor by hand.Also use a methanol-soaked cotton swab to wipe off the lamp housingwhere it contacts the sensor when the sensor is installed.Turn over the sensor so that the pins point up and the sensor cavity isvisible. Examine the sensor electrodes for any corrosion, damage, orbending out of alignment. The metal sensor electrode “fingers” shouldbe flat and straight. If necessary, carefully bend the sensor fingers toensure that they do not touch the Teflon portions and that they areparallel to each other. Make sure that the nuts on the sensor pins aresnug but not overtight. If the sensor is corroded or otherwise damaged,it should be replaced.Cleaning The Lamp Housing Or Changing The LampIf the lamp does not turn on, the instrument will display an errormessage to indicate replacement of the lamp may be required.1. If the lamp is operational, clean the lamp window surface and thelamp housing by wiping it with GC grade methanol using a cottonswab using moderate pressure. After cleaning, hold the lamp up tothe light at an angle to detect any remaining film. Repeat theprocess until the lamp window is clean. Never use water solutionsto clean the lamp. Dry the lamp and the lamp housing thoroughlyafter cleaning.CAUTION: Never touch the window surface with the fingersor anything else that may leave a film. Never use acetone oraqueous solutions.2. If the lamp does not turn on, remove the lamp from the lamphousing. Place the lamp O-ring onto the new lamp. Insert the newlamp, avoiding contact with the flat window surface.3. Reinstall the PID sensor module.4. Tighten the Lamp Housing Cap.92
MiniRAE 3000 User’s GuideDetermining The Lamp TypeThe monitor can accommodate three lamp values: 10.6eV (standard),9.8eV, and 11.7eV. The monitor automatically reads a marking on theside of the lamp to set the proper Correction Factor. There are twoways to determine the lamp type:Remove the lamp and look for markings (bars) on the side:• No bars: 10.6eV• 1 bar: 11.7eV• 2 bars: 9.8eVAlso, when the monitor is running, the lamp type is shown along withthe calibration and measurement gas and Correction Factor:Note: This screen can be accessed from the reading screen by pressing[N/-] four times.93
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RAE MiniRAE 3000 User's Guide - Geotech

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