Instruction Manual HI 8633 HI 8733 - HI 8734 Reliable and Waterproof Multi-Range Conductivity 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 instrument. It will provide you with the necessary information for a correct use of the instrument, as well as a more 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 OF HI 8633 1) 2) 3) 4) 5) Liquid Crystal Display Conductivity/temperature selection key Measurement range selection keys Manual temperature compensation knob ON/OFF key Range Resolution Accuracy (@ 20°C/68°F) Typical EMC Deviation Calibration Temperature Compensation Probe (included) Environment Battery Type Life Dimensions Weight 0.0 to 199.9 / 0 to 1999 µS/cm 0.00 to 19.99 / 0.0 to 199.9 mS/cm 0.1 / 1 µS/cm 0.01 / 0.
FUNCTIONAL DESCRIPTION & SPECIFICATIONS OF HI 8734 1) 2) 3) 4) 5) Liquid Crystal Display Measurement range selection keys Manual temperature compensation knob TDS/temperature selection key ON/OFF key Range Resolution 0.0 to 199.9 / 0 to 1999 mg/L 0.00 to 19.99 g/L 0.1 / 1 mg/L 0.
• Select the appropriate measurement range. Note: If the display shows only a "1" on the far left hand side, the meter is out of range. Select the next (higher) range. • Wait for a couple of minutes for the temperature sensor to reach thermal equilibrium with the sample before taking measurements. • After the measurement has been completed, the instrument should be switched off and the probe should be cleaned and dried (see "Probe Maintenance" on page 15). air bubbles remain trapped in the sleeve.
• All subsequent measurements will be compensated to 25°C (77°F). If you prefer to standardize the temperature compensation to 20°C (68°F) rather than 25°C (77°F), leave the TEMPERATURE knob at 18°C (if the temperature of the solution is 18°C), adjust the trimmer to read "11.67 mS" (see the conductivity vs. temperature chart) or "1251 mg/L" (see the TDS vs. temperature chart). All subsequent measurements will be compensated to 20°C. • The calibration is now complete and the instrument is ready for use.
CONDUCTIVITY VERSUS TEMPERATURE CHART TDS VERSUS TEMPERATURE CHART The conductivity of an aqueous solution is the measure of its ability to carry an electrical current by means of ionic motion. The conductivity invariably increases with increasing temperature. It is affected by the type and number of ions in the solution and by the viscosity of the solution itself. Both parameters are temperature dependent.
DETERMINING THE TEMPERATURE COEFFICIENT OF A SOLUTION (HI 8733) Highly acidic, alkaline samples or solutions with high salt content might have a different coefficient than the customary 2% per degree °C. In order to calculate this coefficient follow the procedure below: • Immerse the probe of HI 8733 in the sample and adjust the TEMPERATURE COEFFICIENT knob to 0% (i.e. no compensation). 0 2.5 0.5 2 1 1.
BATTERY REPLACEMENT When the battery becomes weak the meters will display an additional blinking decimal point. When the low battery indicator appears, the battery has only a few hours left. A low battery will result in unreliable measurements. It is recommended to replace the battery immediately. Battery replacement must only take place in a nonhazardous area using a 9V alkaline battery.
WARRANTY CE DECLARATION OF CONFORMITY All Hanna Instruments meters are warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The probes are warranted for a period of six months. This warranty is limited to repair or replacement free of charge. Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered.
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.
