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Manual abstract: user guide HANNA INSTRUMENTS HI 83414
Detailed instructions for use are in the User's Guide.
[. . . ] Instruction Manual
HI 83414
Turbidity and Free/Total Chlorine Meter
w w w. c o m
1
Dear Customer, Thank you for choosing a Hanna Instruments product. This manual will provide you with the necessary information for correct use of the instrument. Please read this instruction manual carefully before using the instrument. [. . . ] This mode can also be selected when high accuracy measurements are needed. In the average mode 10 measurements are averaged in a short period of time (about 20 seconds). To use the averaged reading mode first enter setup and enable the Average reading mode. The "AVG" text will be displayed in the left side of the screen.
· Press "Read" functional key to take the measurement.
The display will show "READ" in the left side and blinking dashes. The icon for lamp will appear during different measurement phases. The first value is displayed after 10 seconds and then a new average of the available readings is displayed each second. When a new value is displayed, the measurement value will blink briefly. The last 22
averaged value remains on the display at the end of the measurement. HI 83414 automatically selects the correct turbidity range to display the results with the highest accuracy. If the measured value is higher than 4000 NTU (980 EBC or 26800 Nephelos), the display will show the maximum value blinking and the message "Out of range" on the message line. UNITS CHANGE To change the units, simply press the "Unit" functional key when a measurement is available. The Nephelos value is obtained by multiply with 6. 7 the NTU value. The EBC value is obtained by multiply with 0. 245 the NTU value.
EPA MODE To round the readings as EPA specifications press the "EPA" functional key. The EPA text is displayed on the left side of the LCD and the reading is rounded as follows:
NTU 0. 0-1. 0 1-10 10-40 40-100 100-400 400-1000 >1000 Round to Nearest 0. 05 0. 1 1 5 10 50 100
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C A L I B R A T I O N P R O C E D U R E F O R R A T I O / N ON R A T I O TURBIDITY RANGE
HI 83414 has a powerful calibration function that compensates for lamp aging or changing. The calibration can be done using the suplied calibration solutions or user prepared standards. HI 83414 turbidimeter is supplied with 5 AMCO standards: <0. 1 NTU, 15 NTU, 100, 750NTU and 2000NTU. The Hanna standards are specially designed for this instrument. Turbidity standards have a shelf life and should not be used after the expiration date. Alternatively, formazin standards can be used. It is recommended that the turbidity value of the prepared calibration solutions to be close to the default calibration points. The first calibration point should be near 0 NTU, the second point can be chosen between 10 and 20 NTU, the third point between 50 and 150 NTU, the fourth point between 600 and 900 NTU and the fifth point between 1500 and 2500 NTU. FORMAZIN PREPARATION In order to prepare formazin 4000 NTU stock solution, follow the next procedure: Solution I : Dissolve 1. 000 grams of hydrazine sulfate, (NH2)2 H2SO4, in distilled, deionized water and dilute to 100 mL in a volumetric flask. [. . . ] If the repair is not covered by the warranty, you will be notified of the charges incurred. If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization Number from the Customer Service Department and then send it with shipment costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection. To validate your warranty, fill out and return the enclosed warranty card within 14 days from the date of purchase.
RECOMMENDATIONS FOR USERS
Before using this product, make sure that it is entirely suitable for your specific application and for the environment in which it is used. [. . . ]
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