Hanna Instruments HI 9812-0 Instruction Manual
Portable ph/ec/tds/c meters
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Summary of Contents for Hanna Instruments HI 9812-0
- Page 1 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com Instruction Manual HI 9812-0 • HI 9812-5 Portable pH/EC/TDS/°C Meters...
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Page 2: Table Of Contents
BATTERY REPLACEMENT .............. 11 coefficient is fixed at 2%/°C. PROBE MAINTENANCE ..............12 • HI 9812-0 is a pH/EC/TDS meter designed for simplicity of use in ACCESSORIES ................13 taking pH, µS/cm and ppm measurements. Suited for hydro- CE DECLARATION OF CONFORMITY ..........14 ponics, greenhouses, farming and ground water applications. -
Page 3: Functional Description
1) 8-pin DIN connector for probe Compensation with ß = 2%/°C 2) Liquid Crystal Display Probe (included) HI 1285-0 for HI 9812-0 3) pH range selection key HI 1285-5 for HI 9812-5 4) µS/cm (EC) range selection key Battery Type... -
Page 4: Operational Guide
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. •... -
Page 5: Ph Calibration
• Take the temperature of the buffer solution, 4.03 6.84 6.99 9.10 9.92 e.g. 10.0°C, as follow: 4.04 6.84 6.98 9.07 9.88 for HI 9812-0, with a ChecktempC (or an- 4.05 6.83 6.98 9.04 9.85 other accurate thermometer); 4.06 6.83 6.98 9.01 9.82 for HI 9812-5, select the °C mode and... -
Page 6: Ec/Tds Calibration
The TDS value in aqueous solutions is directly proportional to the conductivity. The ratio between the two parameters depends on the solution. Both HI 9812-0 and HI 9812-5 models have a fixed conversion factor set to 0.5. This means that 1 µS/cm is equal to 0.5 ppm of TDS. -
Page 7: Probe Maintenance
PROBE MAINTENANCE ACCESSORIES PERIODIC MAINTENANCE PROBES Inspect the probe and the cable. The cable used for the connection to HI 1285-0 Combination, amplified pH/EC/TDS probe with built-in the meter must be intact and there must be no points of broken temperature sensor, 8-pin DIN connector and 1 m insulation on the cable or cracks on the probe stem or bulb.
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