Instruction Manual HI 95729C Fluoride Low Range ISM MAN95729CR2 10/04 w w w . h a n n a i n s t . c o m www.hannainst.
Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct use of the instrument. Please read it carefully before using the meter. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com. This instrument is in compliance with directives. TABLE OF CONTENTS PRELIMINARY EXAMINATION .............................................................................................. 3 GENERAL DESCRIPTION .
PRELIMINARY EXAMINATION FACTORY CALIBRATION RESET It is possible to restore factory calibration: • Enter the calibration mode by holding CAL CHECK for three seconds. Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occurred during shipment, please notify your Dealer.
GENERAL DESCRIPTION The HI 95729 is an auto diagnostic portable microprocessor meter that benefits from Hanna’s years of experience as a manufacturer of analytical instruments. It has the advanced optical system based on a special tungsten lamp and a narrow band interference filter that allows most accurate and repeatable readings. All instruments are factory calibrated and the electronic and optical design minimizes the need of frequent calibration.
CALIBRATION PROCEDURE SPECIFICATIONS Note it is possible to interrupt calibration procedure at any time by pressing ON/OFF. Warning: do not validate or calibrate the instrument with standard solutions other than the Hanna CAL CHECKTM Standards, otherwise erroneous results will be obtained. For accurate Validation and Calibration results, please perform test at room temperature: 18 to 25°C (64.5 to 77.0°F).
VALIDATION PROCEDURE Absorption of Light is a typical phenomenon of interaction between electromagnetic radiation and matter. When a light beam crosses a substance, some of the radiation may be absorbed by atoms, molecules or crystal lattices.
• Replace the cap to the cuvet, and shake gently a couple of times. . I I A microprocessor controlled special tungsten lamp emits radiation which is first optically conditioned and beamed to the sample contained in the cuvet. The optical path is fixed by the diameter of the cuvet.
This prompt appears for 1 second each time the instrument is turned on. 2 13 L 8 m This indicates that the meter is in a ready state and zeroing can be performed. Sampling in Progress. This flashing prompt appears each time the meter is performing a measurement. l GUIDE TO DISPLAY CODES k 1) four digit main display area. 2) CAL: appears when the instrument operates in the calibration mode. 3) the Month and Day icons appear above the number of month and day when a date is displayed.
• Do not let the reacted sample stand too long after reagent is added, or accuracy will be lost. • It is possible to take multiple readings in a row, but it is recommended to take a new zero measurement. reading for each sample and to use the same cuvet for zeroing and measurement • After the reading it is important to discard immediately the sample, otherwise the glass might become permanently stained. • All the reaction times reported in this manual are referred to 20°C (68°F).
ERROR MESSAGES GENERAL TIPS FOR AN ACCURATE MEASUREMENT a) on zero reading The instructions listed below should be carefully followed during testing to ensure best accuracy. This indicates that the zeroing procedure failed due to a low signalto-noise ratio. In this case press ZERO again. “No Light”: the instrument cannot adjust the light level. Please check that the sample does not contain any debris.