Hanna Instruments HI 93711 Manuals

Instruction Manual HI 93711 Free & Total Chlorine ISM w w w . h a n n a i n s t . c o m This Instrument is in Compliance with the CE Directives Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. WARRANTY HI 93711 is warranted for two years against defects in workman- ship and materials when used for its intended purpose and maintained according to 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. If service is required, contact the dealer from whom you purchased the instrument. If under warranty, report the model number, date of pur- chase, serial number and the nature of the failure. 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 de- partment and then send it with shipment costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protec- tion. To validate your warranty, fill out and return the enclosed warranty card within 14 days from the date of purchase. All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instru- ments Inc., Woonsocket, Rhode Island, 02895 , USA. Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct operation of the meter. Please read it carefully before using the meter. If you need additional technical information, do not hesitate to e-mail us at [email protected]. This instrument is in compliance with directives. Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipment. If there is any damage, notify your Dealer. Each Ion Specific Meter is supplied complete with • 9V Battery • Two Sample Cuvets and Caps • One Transport Cap Note: Conserve all packing material until the instrument has been observed to function correctly. Any defective item must be returned in its original packing. PRELIMINARY EXAMINATION GENERAL DESCRIPTION The HI 93711 meter measures the free and total chlorine (Cl2) content in water and wastewater. The meter uses an exclusive positive-locking system to ensure that the cuvet is in the same place every time it is placed into the measurement cell. The reagents are in liquid and powder form and are supplied in bottles and in packets. The amount of reagent is precisely dosed to ensure maximum repeatability. Display codes aid the user in routine operations. The meters have an auto-shut off feature that will turn the instrument off after 10 minutes of non-use. SPECIFICATIONS SPECIFICATIONS Range Free Cl2 0.00 to 2.50 mg/L Total Cl2 0.00 to 3.50 mg/L Resolution 0.01 mg/L Accuracy ±0.03 mg/L ±3% of reading Typical EMC ±0.01 mg/L Deviation Light Source Light Emitting Diode @ 555 nm Method Adaptation of the EPA recommended DPD method 330.5. The reaction between the chlorine and the DPD reagent causes a pink tint in the sample. Light Detector Silicon Photocell Environment 0 to 50°C (32 to 122°F); max 95% RH non-condensing Battery Type/Life 1 x 9 volt/40 hours Auto-Shut off After 10' of non-use Dimensions 80 x 83 x 46 mm (7.1 x 3.3 x 1.8") Weight 290 g (10 oz.). REQUIRED REAGENTS POWDER: Code Unit Description Quantity HI 93701-0 Free Cl2 DPD 1 packet HI 93711-0 Total Cl2 DPD 1 packet LIQUID: Code Unit Description Quantity HI 93701A-T Free and Total Cl2 DPD1 indicator 3 drops HI 93701B-T Free and Total Cl2 DPD1 buffer 3 drops HI 93701C Total Cl2 only DPD3 solution 1 drop This indicates that the meter is in ready state and zeroing can be pe formed. Sampling in Progress. This prompt ap pears each time the meter is performin a measurement. This indicates that the meter is in zeroed state and measurement can b performed. A zero reading was not taken. Insert sample before adding reagent and pres ZERO. Under range. A blinking "0.00" indicate that the sample absorbs less light tha the zero reference. Check the procedu and make sure you use the same cuv for reference (zero) and measurement. Over range. A flashing value higher tha the maximum concentration readable (se specifications) indicates that the samp absorbs too much light, meaning tha the concentration is too high. Dilute th sample. Light over range. The cuvet is not in serted correctly and an excess ambien light is reaching the detector. If the cove is properly installed, then contact you dealer or the nearest Hanna Custome Service Center. Light under range. The zero sample too dark for proper zeroing. If this is no the case, contact your dealer or th nearest Hanna Customer Service Center The "V" indicates that the battery vol age is getting low and the battery need to be replaced. This indicates that the battery is dea and must be replaced. Note: once this indication is displayed the meter will lockup. Change the ba tery to restart. DISPLAY CODE GUIDE V OPERATIONAL GUIDE MEASUREMENT PROCEDURE • Turn the meter on by pressing ON/OFF. • When the LCD displays "- - -", it is ready. • Select free or total Chlorine by pressing FREE/TOTAL. An "I" or a "C" will appear on the right corner to indicate free or total chlorine, respectively. • Fill the cuvet with 10 mL of unreacted sample, up to the mark, and replace the cap. • Place the cuvet into the holder and ensure that the notch on the cap is positioned securely into the groove. • Press ZERO and "SIP" will appear on the display. • Wait for a few seconds and the display will show "-0.0-". Now the meter is zeroed and ready for measurement. • Remove the cuvet Powder reagents procedure • Add the specific test reagent to the cuvet: Free Chlorine: 1 packet of Total Chlorine: 1 packet of DPD Free Chlorine reagent DPD Total Chlorine reagent. ON OFF FREE TOTAL ZERO • Replace the cap and shake gently for 20 seconds (or 2 minutes in case of seawater analysis). • Replace the cuvet into the holder and ensure that the notch on the cap is positioned securely into the groove. • Wait for 1 minute in case of Free Chlorine or 2 minutes and 30’’ seconds in case of Total Chlorine and then press READ. The display will show “SIP” during measurements. • The instrument directly displays concentration in mg/L of Free or Total Chlorine on the Liquid Crystal Display. The instruction listed below should be carefully followed during testing to ensure best accuracy. • Do not touch the cuvet walls with hands. • In order to maintain the same conditions during the zeroing and the measuring phases, it is necessary to close the cuvet to prevent any contamination. • Do not let the test sample stand too long after reagent is added or accuracy will be lost. • Whenever the cuvet is placed into the measurement cell, it must be completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI 731318 or a lint-free cloth prior to insertion. • It is important that the sample does not contain any debris. This would corrupt the readings. • It is possible to take multiple readings in a row, but it is recommended that a zero reading be taken for each sample and that the same cuvet is used for zeroing and measurement. • It is important to discard the sample immediately after the reading is taken because the glass might become permanently stained. TIPS FOR AN ACCURATE MEASUREMENT Recommendations for Users Before using these products, make sure that they are entirely suitable for the enviro ment in which they are used. Operation of these instruments in residential area cou cause unacceptable interferences to radio and TV equipments, requiring the operator take all necessary steps to correct interferences. Any variation introduced by the user the supplied equipment may degrade the instruments' EMC performance. To avoid damages or burns, do not perform any measurement in microwave ovens. ACCESSORIES REAGENT SETS HI 93701-01 Reagents for 100 free chlorine tests (powde HI 93701-03 Reagents for 300 free chlorine tests (powde HI 93711-01 Reagents for 100 total chlorine tests (powde HI 93711-03 Reagents for 300 total chlorine tests (powde HI 93701-T Reagents for 300 chlorine tests (liquid) OTHER ACCESSORIES HI 710009 Blue rubber boot HI 710010 Orange rubber boot HI 721310 9V battery (10 pcs) HI 731318 Tissue for wiping cuvets (4 pcs) HI 731321 Glass cuvets (4 pcs) HI 731325 Caps for cuvets (4 pcs) HI 93703-50 Cuvets cleaning solution (230 mL). CE DECLARATION OF CONFORMITY IST93711R4 09/03 10 mL Liquid reagents procedure • To an empty cuvet add 3 drops of HI 93701A-T DPD1 indicator, 3 drops of HI 93701B-T DPD1 buffer and only in case of Total Chlorine measurement add also 1 drop of HI 93701C DPD solution. Swirl gently to mix and immediately add 10 mL of unreacted sample. Replace the cap and shake gently again. • Reinsert the cuvet into the instrument. • Wait for 1 minute in case of Free Chlorine or 2 minutes and 30’’ seconds in case of Total Chlorine and then press READ. The display will show “SIP” during measurements. or x 3 x 3 x 1 • The instrument directly displays concentration in mg/L of Free or Total Chlorine on the Liquid Crystal Display. Note: free and total chlorine have to be measured sepa- rately with fresh unreacted samples following the above procedure if both values are requested. INTERFERENCES Interference may be caused by: Bromine Iodine Fluorine Ozone Oxidized manganese and Chromium Alkalinity above 250 mg/L or acidity above 150 mg/L will not reliably develop the full amount of color or it may rapidly fade. To resolve this, neutralize the sample with diluted HCl or NaOH. In case of water with hardness greater than 500 mg/L CaCO3, shake the sample for approximately 1 minute after adding the powder reagent. • Shaking the cuvet can generate bubbles in the sampl causing higher readings. To obtain accurate measure ments, remove such bubbles by swirling or by gent tapping the vial. • All the reaction times reported in this manual are referre to 20°C (68°F). As a general rule of thumb, they should b doubled at 10°C (50°F) and halved at 30°C (86°F). or