ADWA AD-203-AD 204 POCKET CONDUCTIVITY METER

ADWA AD-203-AD 204 POCKET CONDUCTIVITY METER Direct readings: better resolution Automatic temperature compensation Easy to read display Dear Customer, Please read this manual carefully before starting operations. Warning The enclosed product is intended for use by persons knowledgeable in safe laboratory practices. Failure can result from surface damage, improper pressure or temperature, or use with improper chemicals. Information concerning limitations of ADWA products can be obtained from ADWA Kft. Operation 1. Remove the protective cap from the bottom of the tester. 2. Press " ON/ OFF" button to turn the tester on. 3. Place the tip of the tester into the sample to be measured. 4. Record the conductivity value. The tester will automatically compensate temperature variations ( ATC) . Leave the tester at least 10-15 sec. in the liquid, to let the ATC do it' s work. 5. Press " ON/ OFF" button to turn the tester off. Calibration 1. Switch the tester on by pressing the “ ON/ OFF" button. 2. Place the tip of the probe into the calibration solution ( eg. 1, 413mS or 12, 88mS) and wait for reading to stabilize. 3. Using the screwdriver supplied, adjust the calibration trimmer on the back of the tester to match the calibration standard value ( 1, 413mS or 12, 88mS) . 4. The tester is now ready to use. Always use a fresh solution for calibration. Maintenance If readings became unstable, clean the probe by rinsing it in alcohol for ten minutes. If the reading fades or disappears, the batteries should be replaced. Battery replacement Open the battery compartment on the top of the tester. Place the batteries noting the polarity listed in the battery compartment. Specifications AD203 Range 0 to 1999 µ S/ cm Resolution 1 µ S/ cm Accuracy ± 2% full scale Temp. compensation Automatic Environment 0° to 50° C 95% relative humidity Battery Life/ Type 150 Hrs. / 4x 1.5V Dimensions 173 x 41 x 22 mm AD204 Range 0.00 to 19.99 µ S/ cm Resolution 0.01 µ S/ cm Accuracy ± 2% full scale Temp. compensation Automatic Environment 0° to 50° C 95% relative humidity Battery Life/ Type 150 Hrs. / 4x 1.5V Dimensions 173 x 41 x 22 mm