Instruction Manual HI 9812-0 • HI 9812-5 Portable pH/EC/TDS/°C Meters w w w . h a n n a i n s t .
Dear Customer, Thank you for choosing a Hanna product. Please read this instruction manual carefully before using the meter. This manual will provide you with the necessary information for correct use of the instrument, as well as a precise idea of its versatility. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com. These instruments are in compliance with the directives.
FUNCTIONAL DESCRIPTION SPECIFICATIONS Range pH ppm µS/cm °C Resolution pH ppm µS/cm °C Accuracy pH (@20°C/68°F) ppm µS/cm °C Conversion Factor Typical EMC pH Deviation ppm µS/cm °C pH Calibration 1) 2) 3) 4) 5) 6) 7) 8) 9) 8-pin DIN connector for probe Liquid Crystal Display pH range selection key µS/cm (EC) range selection key EC/TDS calibration knob pH offset calibration knob ppm (TDS) selection key °C (Temperature) selection key, for HI 9812-5 only ON/OFF key 4 0.0 to 14.
OPERATIONAL GUIDE • Select the appropriate measurement range (EC or TDS). INITIAL PREPARATION Each meter is supplied complete with a 9V battery. Remove the battery compartment cover on the back of the meter and install the battery while paying attention to its polarity. Connect the probe to the DIN socket on the top of the meter by aligning the pins with the socket and pushing in the plug.
pH CALIBRATION For greatest accuracy, frequent calibration of the instrument is recommended. The instrument should be recalibrated for pH: a) Whenever the electrode is replaced. b) At least once a month. c) After testing aggressive chemicals. d) Where extreme accuracy is required. Note: The probe should be submerged approximately 4 cm (1½") into the solution. The ChecktempC thermometer has to be located close to the probe.
EC/TDS CALIBRATION BATTERY REPLACEMENT Accessories needed: • Use HI 70031 (1413 µS/cm) EC calibration solution or HI 70032 (1382 ppm) TDS calibration solution. Note: The conversion between EC and TDS is made by a built-in circuit, hence it is requested to calibrate the meter only in EC or TDS range. The other range is thus automatically calibrated. These meters are powered by a 9V battery that is located on the rear of the instrument.
ACCESSORIES PROBE MAINTENANCE PERIODIC MAINTENANCE PROBES Inspect the probe and the cable. The cable used for the connection to the meter must be intact and there must be no points of broken insulation on the cable or cracks on the probe stem or bulb. Connector must be perfectly clean and dry. If any scratches or cracks are present, replace the electrode. Rinse off any salt deposits with water.
CE DECLARATION OF CONFORMITY HANNA PRODUCTS • CALIBRATION AND MAINTENANCE SOLUTIONS • CHEMICAL TEST KITS • CHLORINE METERS • CONDUCTIVITY/TDS METERS • DISSOLVED OXYGEN METERS • HYGROMETERS • ION SPECIFIC METERS • MAGNETIC STIRRERS • Na/NaCl METERS • pH/ORP/Na ELECTRODES • PROBES (DO, µS/cm, RH, T, TDS) • PUMPS • REAGENTS • SOFTWARE • THERMOMETERS • TITRATORS • TRANSMITTERS • TURBIDITY METERS • Wide Range of Accessories Most Hanna meters are available in the following formats: • BENCH-TOP METERS • POCKET-SI
SALES AND TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (210) 823.5192 • Fax (210) 884.0210 Indonesia: Tel. (21) 4584.2941 • Fax (21) 4584.2942 Japan: Tel. (03) 3258.9565 • Fax (03) 3258.9567 Korea: Tel. (02) 2278.5147 • Fax (02) 2264.1729 Malaysia: Tel. (603) 5638.9940 • Fax (603) 5638.9829 Singapore: Tel. 6296.
