User manual HANNA INSTRUMENTS HI 93732N

[. . . ] Any defective item must be returned in its original packing with the supplied accessories. SPECIFICATIONS Range Resolution Accuracy Typical EMC Deviation Light Source Method 0. 0 to 10. 0 mg/L (ppm) 0. 1 mg/L ±0. 2 mg/L ± 3% of reading ±0. 1 mg/L 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 higher than the maximum concentration readable (see specifications) indicates that the sample absorbs too much light, meaning that the concentration is too high. [. . . ] 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. 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 93732N meter measures the content of dissolved oxygen (O2) in surface, feed, natural and waste waters in the 0. 0 to 10. 0 mg/L (ppm) range. 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 form and are supplied in bottles. The amount of reagent is precisely dosed to ensure maximum repeatability. Display codes aid the user in routine operations. The meter has an auto-shut off feature that will turn itself off after 10 minutes of non-use. Light Emitting Diode @ 470 nm Adaptation of the Standard Methods for the Examination of Water and Wastewater (18th edition), azide modified Winkler method. The reaction between dissolved oxygen and the reagent causes a yellow tint in the sample. Light Life Life of the instrument Light Detector Silicon Photocell Environment 0 to 50°C (32 to 122°F); max 95% RH non-condensing Battery 1 x 9 volt/40 hours Type/Life 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 HI 93732A-0 HI 93732B-0 HI 93732C-0 Description Reagent A Reagent B Reagent C Reagents for 100 tests Reagents for 300 tests Quantity 5 drops 5 drops 10 drops REAGENT SETS HI 93732-01 HI 93732-03 OPERATIONAL GUIDE MEASUREMENT PROCEDURE · Turn the meter on by pressing ON/OFF. · When the LCD displays "- - -", it is ready. · Fill one 60 mL glass bottle completely with the unreacted sample. · Replace the cap and ensure that a small part of the sample spills over. x5 x5 ON OFF · Replace the cap and invert the bottle until dissolution of the settled flocculant is complete. The sample is ready for measurement when it is yellow and completely limpid. · Fill the cuvet up to the mark with 10 mL of the unreacted (original) sample, and replace the cap. · Place the cuvet into the older and ensure that the notch on the cap is positioned securely into the groove. · Press ZERO and "SIP" will appear on the display. ZERO INTERFERENCES Interferences may be caused by reducing and oxidizing materials. ACCESSORIES REAGENT SETS HI 93732-01 Reagents for 100 tests HI 93732-03 Reagents for 300 tests TIPS FOR AN ACCURATE MEASUREMENT The instruction listed below should be carefully followed during testing to ensure best accuracy. · It is important that the sample does not contain any debris. · Each time the cuvet is used, the cap must be tightened to the same degree. · Whenever the cuvet is placed into the measurement cell, it must be dry outside and completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI 731318 or a lintfree cloth prior to insertion. [. . . ] Now the meter is zeroed and ready for measurement. · Fill another cuvet up to the mark with 10 mL of the reacted sample and replace the cap. · Reinsert the cuvet into the instrument. BATTERY REPLACEMENT Battery replacement must only take place in a non-hazardous area using a 9V alkaline battery. Simply slide off the battery cover on the back of the meter. [. . . ]