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Summary of Contents for Hanna Instruments HI8043
- Page 1 HI8043 Portable Dissolved Oxygen Meter...
- Page 2 Dear Thank you for choosing a Hanna Instruments product. Customer, Please read this instruction manual carefully before using the instrument. This manual will provide you with the necessary information for correct use of the instrument, as well as a precise idea of its versatility.
- Page 3 Included ................Safety measures ..............Description ................Product diagram ..............Probe diagram ..............Probe preparation ..............Specifications ..............Probe polarization ............... Calibration ................Operational guide ..............Probe and membrane maintenance ........Battery replacement ............. Accessories ................
- Page 4 Remove protective film from meter. Notify your nearest Hanna Customer Service Center if damage is observed. Packaging for each HI8043 instrument includes: • Spare membrane with O‑Ring (2 pcs.) • Calibration screwdriver •...
- Page 5 HI8043 is a portable meter for Dissolved Oxygen measurements. It is housed in a lightweight case, with an easy‑to‑read LCD. Dissolved oxygen and temperature measurements can be performed in the field (wastewater treatment, fish‑farming, water analysis, etc.) as well as in the laboratory without compromising accuracy.
- Page 6 Liquid Crystal Display (LCD) stb (to switch the meter on and polarize the probe. Use this standby position with out switching the meter off if you are going to take further measurements.) off (to switch the meter off) Rotary switch Zero calibration trimmer Slope calibration trimmer °C calibration trimmer...
- Page 7 HI76401 Dissolved Oxygen Probe 1. Watertight Shielded Cable 2. Probe Body 3. O‑Ring Seal 4. Protective Cap 5. DO Probe 6. Silver Chloride Anode 7. Platinum Cathode (sensor) 8. Oxygen Permeable Membrane 9. Membrane Cap...
- Page 8 The main operating modes of HI8043 are calibration and measurement. Follow this general outline of steps to get you started. Decide how the meter will be used and set up a clean area. Connect the HI76401 probe to the meter.
- Page 9 Temperature 0.0 to 50.0 ºC ; Range 0.00 to 19.99 mg/L (32.0 to 122.0 °F) Resolution 0.01 mg/L 0.1 ºC Accuracy ±1.5% F.S. ±0.5 ºC @ 25 °C / 77 °F Calibration Manual, two point (zero and slope) Temperature Automatic 0 to 30 ºC (32 to 86 ºF) compensation HI76401 polarographic probe with 3 m (10’)
- Page 10 When the probe is under polarization it is continuously fed with a voltage of approximately 800 mV. Probe polarization is essential for stable measurements to be taken with the same degree of accuracy. With polarized probe, oxygen is continually “consumed” by passing through the sensitive diaphragm and dissolving in the electrolyte solution contained in the probe.
- Page 11 Calibration should be made: • after approximately 20 hours of use • whenever the electrolyte or membrane is changed and after cleaning the electrode • after use in aggressive solutions. Accessories: • 200 mL of HI7040 solution • 1 bottle of HI7041S solution Calibration at sea level:...
- Page 12 If you cannot get zero reading, the probe is probably defective. Check the membrane, electrode and electrolyte solution. After the zero calibration has been completed, rinse the probe thoroughly with tap water. Slope Calibration In order to perform a highly accurate calibration, take a B.O.D.
- Page 13 Altitude Compensation If the calibration is not performed at sea level, a correction should be made for the altitude effect according to Table on page 13. E.g. at 20.5°C and at an altitude of 300 m above sea level, the “Slope”...
- Page 14 Dissolved Oxygen (ppm) in Fresh Water as a function of Temperature (°C) °C 0.0 0 14.62 14.58 14.54 14.50 14.46 14.42 14.38 14.34 14.30 14.26 1 14.22 14.18 14.14 14.10 14.06 14.02 13.98 13.94 13.91 13.87 2 13.83 13.79 13.76 13.72 13.68 13.64 13.61 13.57 13.54 13.50 3 13.46 13.43 13.39 13.35 13.32 13.28 13.25 13.21 13.18 13.14 4 13.11 13.07 13.04 13.01 12.97 12.94 12.91 12.87 12.84 12.81 5 12.77 12.74 12.71 12.67 12.64 12.61 12.58 12.54 12.51 12.48...
- Page 15 Correction for measurements at different altitude Altitude Atmospheric Pressure Correction (Meters) Factor Sea level 101.3 1.00 100.7 0.99 100.1 0.99 99.4 0.98 98.8 0.98 97.6 0.96 96.4 0.95 95.2 0.94 94.0 0.93 92.8 0.92 91.7 0.90 90.5 0.89 1000 89.4 0.88 1100 88.3...
- Page 16 Correction for salinity effect Quantity to be Quantity to be °C subtracted per mg/L °C subtracted per mg/L of NaCl of NaCl 0.0892 0.0410 0.0861 0.0400 0.0830 0.0391 0.0802 0.0382 0.0779 0.0373 0.0749 0.0364 0.0724 0.0356 0.0701 0.0348 0.0678 0.0341 0.0657 0.0333 0.0637...
- Page 17 Temperature Calibration The temperature scale should be calibrated at least every 3 months or whenever the readings are in doubt. • Immerse the bottom 60 mm (2.4”) of the probe in a beaker containing water. • Switch the knob to the “°C” position and agitate the water for at least 10 minutes to reach the thermal equilibrium between the probe and...
- Page 18 Make sure the meter has been calibrated and the protective cap has been removed. Immerse the tip of the probe in the sample to be tested. For accurate dissolved oxygen measurements a water movement of at least 0.3 m/sec is required. This movement will ensure that the oxygen depleted membrane surface is constantly replenished.
- Page 19 The DO probe body is made of reinforced plastic for maximum durability. A thermistor temperature sensor provides temperature measurements and compensation. When not in use, it is always recommended to protect the probe against damage and dirt with the supplied cap. To replace the membrane or refill it with electrolyte, proceed as follows: •...
- Page 20 The Platinum cathode (7 in the Probe diagram at page 7) should always be bright and untarnished. If it is tarnished or stained, which could be due to contact with certain gases or extended use with a loose or damaged membrane, the cathode should be cleaned.
- Page 21 When the battery level is low, a battery symbol will be displayed to warn the user that the battery should be replaced soon. Battery replacement must only take place in a safe area and using the battery type specified in this instruction manual. Slide off the battery cover on the rear of the meter and replace the 9V battery with a new one.
- Page 22 Probe HI76401 DO Probe with 3 m (10') cable HI76407A/P Spare membrane (5 pcs.) Solutions HI7040L Zero oxygen solution HI7041S Refill electrolyte solution, 30 mL Other Accessories HI710009 Shockproof rubber boot, blue HI710001 Soft carrying case HI710010 Shockproof rubber boot, orange...
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Page 23: Warranty
Service department and then send it with shipping costs prepaid. When shipping any instrument, make sure it is properly packed for complete protection. Hanna Instruments reserves the right to modify the design, construction or appearance of its products without advance notice. - Page 24 World Headquarters Hanna Instruments Inc. Highland Industrial Park 584 Park East Drive Woonsocket, RI 02895 USA www.hannainst.com Local Office Hanna Instruments USA 270 George Washington Highway Smithfield, RI 02917 Phone: 800.426.6287 Fax: 401.765.7575 e‑mail: tech@hannainst.com MAN8043V 05/16 Printed in ROMANIA...
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