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Summary of Contents for Hanna Instruments HI 95734
- Page 1 Instruction Manual HI 95734 Free & Total Chlorine High Range ISM This Instrument is in w w w . h a n n a c a n . c o m Compliance with the CE Directives...
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Page 2: Table Of Contents
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 techserv@hannacan.com. -
Page 3: Preliminary Examination
Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occured during shipment, please notify your Dealer. Each HI 95734 Ion Selective Meter is supplied complete with: • Two Sample Cuvets and Caps • 9V Battery •... -
Page 4: General Description
GENERAL DESCRIPTION The HI 95734 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. -
Page 5: Specifications
SPECIFICATIONS Range Free Cl 0.00 to 10.00 mg/L Total Cl 0.00 to 10.00 mg/L Resolution 0.01 mg/L from 0.00 to 3.50 mg/L; 0.10 mg/L above 3.50 mg/L Precision ±0.06 mg/L @ 3.00 mg/L Typical EMC Deviation ±0.01 mg/L Light Source Tungsten lamp with narrow band interference filter @ 525 nm Light Detector Silicon Photocell... -
Page 6: Principle Of Operation
PRINCIPLE OF OPERATION 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. If pure absorption occurs, the fraction of light absorbed depends both on the optical path length through the matter and on the physical-chemical characteristics of the substance according to the Lambert-Beer Law: = ε... -
Page 7: Functional Description
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. Then the light is spectrally filtered to a narrow spectral bandwidth, to obtain a light beam of intensity I or I. - Page 8 KEYPAD DESCRIPTION • ON/OFF: to turn the meter on and off. • ZERO/SET: this is a bi-functional key: press to zero the meter prior to measurement, or hold the key for 3 seconds to select the desired parameter (free or total chlorine). •...
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Page 9: Guide To Display Codes
GUIDE TO DISPLAY CODES This prompt appears for 1 second each time the instrument is turned on. The parameter code, “734f” for free chlorine or “734t” for total chlorine, indicates that the meter is in a ready state and zeroing can be performed. - Page 10 The flashing digits indicate that: 1) the month can be set 2) the day can be set “Storage”: this prompt appears for 1 second at the end of the calibration procedure, to indicate that the calibration data has been stored. “Error”: the concentration of the calibration solution used is not correct.
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Page 11: General Tips For An Accurate Measurement
Under range. A blinking "0.00" indicates that the sample absorbs less light than the zero reference. Check the procedure and make sure you use the same cuvet for reference (zero) and measurement. A flashing value of the maximum concentration indicates an over range condition. - Page 12 • In order to measure exactly 5 mL of reagent with the 5 mL syringe: (a) push the plunger completely into the syringe and insert the tip into the reagent bottle. (b) pull the plunger up until the lower edge of the seal is exactly on the 5 mL mark. (c) take out the syringe and clean the outside of the syringe tip.
- Page 13 • Shaking the cuvet can generate bubbles in the sample, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the vial. • Do not let the reacted sample stand too long after reagent is added, or accuracy will be lost. •...
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Page 14: Operational Guide
OPERATIONAL GUIDE • Turn the meter on by pressing ON/OFF. • When the LCD displays “734f” or “734t” it is ready. The display code that appears is the one of the last selected parameter. Code Parameter 734f Free Chlorine 734t Total Chlorine •... -
Page 15: Measurement Procedure
MEASUREMENT PROCEDURE • Select the parameter code for free chlorine “734f” or total chlorine “734t” by holding ZERO/SET (see page 14). • Add to the cuvet 5 mL of HI 93734B-0 reagent by means of the 5 mL syringe. Note: in order to measure exactly 5 mL of reagent with the syringe, follow the instructions on page 12. - Page 16 for Total • Only in the case of total chlorine measurement, Chlorine add 3 drops of HI 93734C-0 reagent to the only cuvet. • For both free and total chlorine, add the content of one packet of HI 93701-0 Free Chlorine reagent.
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Page 17: Validation Procedure
“-0.0-”. The meter is now zeroed and ready for validation. • Remove the cuvet. • Place the CAL CHECK Standard HI 95734-11 Cuvet B into the holder and ensure that the notch on the cap is positioned securely into the groove. -
Page 18: Calibration Procedure
“-0.0-”. The meter is now zeroed and ready for calibration. • Remove the cuvet. • Place the CAL CHECK Standard HI 95734-11 Cuvet B into the holder and ensure that the notch on the cap is positioned securely into the... - Page 19 Note: if the display shows “ERR” the calibration procedure failed. Verify that both CAL CHECK Standards HI 95734-11 Cuvets, A and B, are free from fingerprints or dirt and that they are inserted correctly. DATE INPUT •...
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Page 20: Battery Replacement
FACTORY CALIBRATION RESET It is possible to restore factory calibration: • Enter the calibration mode by holding CAL CHECK for three seconds. • Hold ZERO/SET for 10 seconds. The display will show for 2 seconds “F.CAL” and the parameter code ("734f" or “734t”) appears. The factory calibration is automatically restored and the instrument is ready for measurement. -
Page 21: Accessories
HI 93734-01 Reagents for 100 Free or Total Chlorine tests HI 93734-03 Reagents for 300 Free or Total Chlorine tests OTHER ACCESSORIES HI 95734-11 CAL CHECK Standard Cuvets (1 set) HI 710009 Blue rubber boot HI 710010 Orange rubber boot... -
Page 22: Warranty
WARRANTY HI 95734 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to the instructions. This warranty is limited to repair or replacement free of charge. Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered. -
Page 23: User Notes
USER NOTES Date Parameter Code Validation Value Passed Calibration (mg/L)
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