User manual HANNA INSTRUMENTS HI 96771C

[. . . ] Instruction Manual HI 96771C Chlorine Ultra High Range ISM www. hannainst. com This Instrument is in Compliance with the CE Directives 1 2 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. [. . . ] Code P1 P2 Parameter Chlorine Low Range Chlorine Ultra High Range or · Press RANGE/GLP/ to change the range. The range can be changed any time when the instrument is in measurement mode. The selected range is memorized and the selection remaines unchanged at power off or when the battery is removed. 14 MEASUREMENT PROCEDURE To compensate the meter for the sample turbidity or color, the measurement takes place in two phases. First, the meter is zeroed using the unreacted sample. After the reagents are added the reacted sample is measured. Important note: Chlorine ULTRA HIGH RANGE and chlorine LOW RANGE have to be measured separately with fresh unreacted samples if both values are requested. MEASUREMENT PROCEDURE FOR CHLORINE LOW RANGE (P1) Warning: If the Chlorine Low Range reagent is added to a sample with high chlorine concentration the color formed can be rapidly bleached, resulting erroneous low readings. · Turn the meter on by pressing ON/OFF. · When the beeper sounds briefly and the LCD displays dashes, the meter is ready. The blinking "ZERO" indicates that the instrument needs to be zeroed first. · Pay attention to the selected range. To change the range, simply press RANGE/GLP/ . · Fill the cuvet with 10 mL of unreacted sample, up to the mark, and replace the cap. · Place the cuvet into the cuvet holder and ensure that the notch on the cap is positioned securely into the groove. · Press ZERO/CFM and the lamp, cuvet and detector icons will appear on the display, depending on the measurement phase. 15 · After a few seconds, the display will show "-0. 0-". The meter is now zeroed and ready for measurement. · Remove the cuvet from the instrument. · Add the content of the one packet of HI 93701-0 Free Chlorine reagent. Replace the cap and shake gently for 20 seconds. · Replace the cuvet into the cuvet holder and ensure that the notch on the cap is positioned securely into the groove. · Press and hold READ/ /TIMER for three seconds. The display will show the countdown prior to measurement. The beeper is playing a beep at the end of countdown period. [. . . ] · Press ZERO/CFM to restore the factory calibration or press RANGE/GLP/ again to abort factory calibration restore. · The instrument briefly notifies "done" when restores factory calibration and returns to measurement mode. BATTERY MANAGEMENT To save battery, the instrument shuts down after 10 minutes of non-use in measurement mode and after 1 hour of non-use in calibration mode. If a valid measurement was displayed before auto shut off, the value is displayed when the instrument is switched on. The blinking "ZERO" means that a new zero has to be performed. [. . . ]