Hanna Instruments HI 96771C Instruction Manual

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Contents

5GENERAL DESCRIPTIONABBREVIATIONSThe HI 96771 is an auto diagnostic portable microprocessor meter that benefits from Hanna’syears of experience as a manufacturer of analytical instruments. It has the advanced opticalsystem based on a special tungsten lamp and a narrow band interference filter that allows mostaccurate and repeatable readings. All instruments are factory calibrated and the electronic andoptical design minimizes the need of frequent calibration.With the powerful CAL CHECKTM validation function, you are able to validate good performanceof your instrument at any time. The validation procedure is extremely user friendly. Just use theexclusive HANNA ready-made, NIST traceable standards to verify the performance of theinstrument and recalibrate if necessary.All instruments are splash waterproof and the lamp and filter units are protected from dust or dirtby a transparent cup. This makes the instruments fulfill field applications. Display messages aidthe user in routine operation. The meter has an auto-shut off feature that will turn off theinstrument after 10 minutes of non use in measurement mode or after 1 hour if left incalibration mode.The meter uses an exclusive positive-locking system to ensure that the cuvet is in the sameposition every time it is placed into the measurement cell. It is designed to fit a cuvet with alarger neck making it easier to add both sample and reagents. The cuvet is made from specialoptical glass to obtain best results.The HI 96771 meter measures the free chlorine (Cl2) content in water samples in the 0 to 5.00mg/L (ppm) range and in the 0 to 500 mg/L (ppm) range. The methods are an adaptation ofStandard Methods for the Examination of Water and Wastewater, 20th edition, 4500-Cl.The reagents are in powder form and are supplied in packets. The amount of reagent is preciselydosed to ensure the maximum repeatability.degree Celsiusdegree Fahrenheitmilligrams per liter. mg/L is equivalent to ppm (part per million)millilitermillivoltsLiquid Crystal Display°C:°F:mg/L:mL:mV:LCD: