Instruction Manual HI 9142 Portable Waterproof Dissolved Oxygen Meter www.hannainst.
Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA Technical Support for Customers Tel. (800) 426 6287 Fax (401) 765 7575 E-mail tech@hannainst.com www.hannainst.
Dear Customer, Thank you for choosing a Hanna Instruments Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all 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 or view our worldwide contact list at www.hannainst.com. TABLE OF CONTENTS PRELIMINARY EXAMINATION.............................
Dear Customer, Thank you for choosing a Hanna Instruments Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all 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 or view our worldwide contact list at www.hannainst.com. TABLE OF CONTENTS PRELIMINARY EXAMINATION.............................
METER FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION 3 1 4 6 7 8 4 9 5 6 2 7 8 10 9 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. D.O. probe Protective cap Shielded cable Polypropylene probe body Temperature sensor O-Ring seal Silver chloride (AgCl) anode Platinum cathode (sensor) Oxygen permeable membrane Membrane cap 4 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
METER FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION 3 1 4 6 7 8 4 9 5 6 2 7 8 10 9 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. D.O. probe Protective cap Shielded cable Polypropylene probe body Temperature sensor O-Ring seal Silver chloride (AgCl) anode Platinum cathode (sensor) Oxygen permeable membrane Membrane cap 4 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
SPECIFICATIONS Range 0.0 to 19.9 mg/L (ppm) -5.0 to 50.0°C (23.0 to 122.0°F) Resolution 0.1 mg/L 0.1°C (1°F) Accuracy ±1.5% FS ±0.2°C (±1°F) excluding probe error Calibration Manual in 100% DO Automatic in 0% DO Temperature Compensation Automatic, 0 to 50°C (32 to 122°F) Probe Battery Type Life Auto-off HI 76407/4, polarographic, with 4 m (13') cable (included) 3 x 1.5V AAA approx. 1000 hours of use After approx.
SPECIFICATIONS Range 0.0 to 19.9 mg/L (ppm) -5.0 to 50.0°C (23.0 to 122.0°F) Resolution 0.1 mg/L 0.1°C (1°F) Accuracy ±1.5% FS ±0.2°C (±1°F) excluding probe error Calibration Manual in 100% DO Automatic in 0% DO Temperature Compensation Automatic, 0 to 50°C (32 to 122°F) Probe Battery Type Life Auto-off HI 76407/4, polarographic, with 4 m (13') cable (included) 3 x 1.5V AAA approx. 1000 hours of use After approx.
Connect the probe to the instrument. Turn the instrument ON by pressing On/Off. At start-up the display will show all the used segments for a few seconds followed by the percentage indication of the remaining battery life. PROBE POLARIZATION The probe is under polarization with a fixed voltage of approximately 800 mV. Probe polarization is essential for stable measurements with the same recurring degree of accuracy.
Connect the probe to the instrument. Turn the instrument ON by pressing On/Off. At start-up the display will show all the used segments for a few seconds followed by the percentage indication of the remaining battery life. PROBE POLARIZATION The probe is under polarization with a fixed voltage of approximately 800 mV. Probe polarization is essential for stable measurements with the same recurring degree of accuracy.
SLOPE CALIBRATION TAKING MEASUREMENTS It is suggested to perform the slope calibration in satured air (100% DO). • Rinse the probe in a large amount of clean water to remove any residual zero oxygen solution. Dry the probe tip and allow a few minutes for the LCD readout to stabilize. • Press the CAL key and follow the indication on the display. • Adjust the slope trimmer on the bottom of the meter to read “100%“ on the LCD. Note: • The slope calibration screw is located on the bottom of the case.
SLOPE CALIBRATION TAKING MEASUREMENTS It is suggested to perform the slope calibration in satured air (100% DO). • Rinse the probe in a large amount of clean water to remove any residual zero oxygen solution. Dry the probe tip and allow a few minutes for the LCD readout to stabilize. • Press the CAL key and follow the indication on the display. • Adjust the slope trimmer on the bottom of the meter to read “100%“ on the LCD. Note: • The slope calibration screw is located on the bottom of the case.
ALTITUDE AND SALINITY COMPENSATION If the sample contains salts or if you are performing the measurements at a different altitude than sea level, the readout values must be corrected, taking into account the lower degree of oxygen solubility. This gives an idea of the error that can be introduced at different altitudes and allows you to calculate the quantity to be subtracted to correct your reading.
ALTITUDE AND SALINITY COMPENSATION If the sample contains salts or if you are performing the measurements at a different altitude than sea level, the readout values must be corrected, taking into account the lower degree of oxygen solubility. This gives an idea of the error that can be introduced at different altitudes and allows you to calculate the quantity to be subtracted to correct your reading.
PROBE AND MEMBRANE MAINTENANCE The oxygen probe body is made of reinforced plastic for maximum durability. A thermistor temperature sensor provides temperature measurement and compensation. When not in use, it is always recommended to protect the probe against damage and dirt using the supplied cap. To replace the membrane or refill with electrolyte, proceed as follows: • Remove the protective cap by gently twisting and pulling it off (see fig. 1).
PROBE AND MEMBRANE MAINTENANCE The oxygen probe body is made of reinforced plastic for maximum durability. A thermistor temperature sensor provides temperature measurement and compensation. When not in use, it is always recommended to protect the probe against damage and dirt using the supplied cap. To replace the membrane or refill with electrolyte, proceed as follows: • Remove the protective cap by gently twisting and pulling it off (see fig. 1).
ACCESSORIES BATTERY REPLACEMENT When the battery level is low, “BATT“ tag is displayed blinking on the LCD to advise the user that approx. 1 hour of working time is left. It is recommended to change the batteries as soon as the battery indicator blinks. To replace the batteries, follow the next steps: • Turn OFF the instrument. • Open the battery compartment cap (located on the top of the instrument). • Remove old batteries. • Insert three new 1.
ACCESSORIES BATTERY REPLACEMENT When the battery level is low, “BATT“ tag is displayed blinking on the LCD to advise the user that approx. 1 hour of working time is left. It is recommended to change the batteries as soon as the battery indicator blinks. To replace the batteries, follow the next steps: • Turn OFF the instrument. • Open the battery compartment cap (located on the top of the instrument). • Remove old batteries. • Insert three new 1.
WARRANTY HI 9142 is guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. Electrodes and probes are guaranteed for six months. This warranty is limited to repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered. If service is required, contact the dealer from whom you purchased the instrument.
WARRANTY HI 9142 is guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. Electrodes and probes are guaranteed for six months. This warranty is limited to repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered. If service is required, contact the dealer from whom you purchased the instrument.
Instruction Manual HI 9142 Portable Waterproof Dissolved Oxygen Meter www.hannainst.
Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA Technical Support for Customers Tel. (800) 426 6287 Fax (401) 765 7575 E-mail tech@hannainst.com www.hannainst.
