Accumet AP75 Operating Instructions Manual
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Contents
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4512. Addendum 1: Calibration TipsYou only need one calibration for measurement throughout the entire range of themeter. If a range was not calibrated, the meter automatically detects the closest rangecalibrated and uses that calibration information. However, only the ranges that werecalibrated have maximum accuracy.• If you are measuring in ranges near to or greater than 20 mS (10 ppt), or near to orlower than 100 μS (50 ppm), calibrate the meter at least once a week to get speci-fied ±1% F.S. accuracy.• If you are measuring in the mid ranges and you washed the probe in deionizedwater and stored it dry, calibrate the meter at least once a month.Wet the probe for 10 minutes before calibrating or taking readings to saturate theprobe surface and minimize drift. If you make measurements at extreme tempera-tures, calibrate the meter at least once a week.You should only use the conductivity/TDS probe specified for these meters. Theseprobes have a built-in temperature sensor. If you use a different probe without atemperature sensor, you must measure the solution temperature separately andmanually enter the solution temperature (see manual temperature compensation onpages 18-19). |
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