Instruction Manual HI 93734 Free & Total Chlorine HR ISM 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 tech@hannainst.com. directives. This instrument is in compliance with Specifications Display Code Guide This indicates that the meter is in a ready state and zeroing can be performed. Sampling in Progress. This prompt appears each time the meter is performing a measurement. This indicates that the meter is in a zeroed state and measurement can be performed. A zero reading was not taken. Insert a sample before adding reagent and press ZERO. 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. Over range. A flashing value higher than the maximum concentration readable (see specifications) indicates that the sample absorbs too much light, meaning that the concentration is too high. Dilute the sample. Light over range. The cuvet is not inserted correctly and an excess ambient light is reaching the detector. If the cover is properly installed, then contact your dealer or the nearest Hanna Customer Service Center. Light under range. The zero sample is too dark for proper zeroing. If this is not the case, contact your dealer or the nearest Hanna Customer Service Center. V Preliminary Examination 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: Keep all packing material until the instrument has been observed to function correctly. Any defective item must be returned in its original packing. www.hannainst.com This Instrument is in Compliance with CE Directives SPECIFICATIONS Range Resolution Accuracy Typical EMC Deviation Light Source Method Free Cl2 0.00 to 9.99 mg/L Total Cl2 0.00 to 9.99 mg/L 0.01 mg/L ±0.03 mg/L ±3% of reading ±0.01 mg/L Warranty HI 93734 is warranted for two years against defects in workmanship 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 purchase, 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 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. All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. General Description The HI 93734 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 position every time it is placed into the measurement cell. The reagents are in powder and liquid form and are supplied in bottles and powder 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. Light Emitting Diode @ 555 nm 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 180 x 83 x 46 mm (7.1 x 3.3 x 1.8") Weight 290 g (10 oz.). REQUIRED REAGENTS Code Description HI 93701-0 Free Chlorine Reagent HI 93734B-0 Free & Total Chlorine Reagent B HI 93734C-0 Total Chlorine Reagent C (for Total Chlorine only) Quantity 1 packet 5 mL 3 drops The "V" indicates that the battery voltage is getting low and the battery needs to be replaced. This indicates that the battery is dead and must be replaced. Note: once this indication is displayed, the meter will lockup. Change the battery to restart. REAGENT SETS HI 93734-01 Reagents for 100 Free & Total Chlorine tests HI 93734-03 Reagents for 300 Free & Total Chlorine tests Operational Guide MEASUREMENT PROCEDURE · Turn the meter on by pressing ON/OFF. ON OFF Note: rinse the 3 mL plastic pipette 2 or 3 times with sample before adding it to the cuvet with reagent. · Replace the cap and shake gently. · The instrument directly displays concentration in mg/L (ppm) of Free or Total Chlorine on the Liquid Crystal Display. Note: Free and Total Chlorine have to be measured separately with fresh unreacted samples following the above procedure if both values are requested. · When the LCD displays "- - -", it is ready. · Select Free or Total FREE Chlorine by pressing TOTAL FREE/TOTAL. An "I" or a "C" will appear on the right corner to indicate Free or Total Chlorine, respectively. · 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 blink on the display. ZERO 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 1000 mg/L CaCO3, shake the sample for approximately 1 minute after adding the powder reagent. 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. · 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. · All the reaction times reported in this manual are referred to 20°C (68°F). As a general rule of thumb, they should be doubled at 10°C (50°F) and halved at 30°C (86°F). Accessories REAGENT SETS HI 93734-01 Reagents for 100 Free & Total Chlorine tests HI 93734-03 Reagents for 300 Free & Total Chlorine tests · Add to the cuvet 5 mL of HI 93734B-0 Reagent B by means of the 5 mL syringe. Note: To measure exactly 5 mL of reagent with the syringe, push the plunger completely into the syringe and insert the tip into HI 93734B-0 reagent bottle. Pull the plunger out until the lower edge of the seal is on the 5 mL mark of the syringe. · Wait for a few seconds and the display will show "-0.0-". Now the meter is zeroed and ready for measurement. · Remove the cuvet. · Only in case of Total Chlorine measurement, add 3 drops of HI 93734C-0 Reagent C to the cuvet. · Add the content of one packet of HI 93701-0 Free Chlorine Reagent to the cuvet. 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. m L 5 OTHER ACCESSORIES ACCESSORIES · 5 mL graduated syringe · 1 plastic pipette x 3 Tips for an Accurate Measurement 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 HI 710009 HI 710010 HI 721310 HI 731318 HI 731321 HI 731325 HI 93703-50 C 215-00300 Blue rubber boot Orange rubber boot 9V battery (10 pcs) Tissue for wiping cuvets (4 pcs) Glass cuvets (4 pcs) Caps for cuvets (4 pcs) Cuvets cleaning solution (230 mL) 5 mL graduated syringe CE Declaration of Conformity Recommendations for Users Before using these products, make sure that they are entirely suitable for the environment in which they are used. Operation of these instruments in residential area could cause unacceptable interferences to radio and TV equipments, requiring the operator to take all necessary steps to correct interferences. Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance. To avoid damages or burns, do not perform any measurement in microwave ovens. IST93734R3 07/04 o b b o a e e v e r p u l s i r y q f l l l · Fill the cuvet up to the 10 mL mark with 5 mL of unreacted sample, using the 3 mL plastic pipette. · 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. d n u b a k e t i n p y e i g m L 5 m o s a e f 1 l p m L 0 ...