User manual HANNA INSTRUMENTS HI 93714

[. . . ] 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. 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. The zero sample is too dark for proper zeroing. [. . . ] 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 93714 meter measures the cyanide (CN­) content in water, wastewater and seawater in the 0. 000 to 0. 200 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 powder form and are supplied in bottles with spoon (Reagent A) and in packets (Reagents B and C). 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 @ 585 nm Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, PyridinePyrazalone method. The reaction between cyanide and reagents causes a blue 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. ). V REQUIRED REAGENTS Code HI 93714A-0 HI 93714B-0 HI 93714C-0 Description Reagent A Reagent B Reagent C Quantity 1 spoon 1 packet 1 packet 09/06 IST93714R4 REAGENT SETS HI 93714-01 HI 93714-03 Reagents for 100 tests Reagents for 300 tests Operational Guide MEASUREMENT PROCEDURE · Turn the meter on by pressing ON/OFF. ON OFF · Replace the cap immediately, to prevent the escape of chlorine gas which is developed during the reaction, and shake gently for 30 seconds. INTERFERENCES 12 9 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. Detach the battery from the terminals and attach a fresh 9V battery while paying attention to the correct polarity. Replace the battery and the cover. 30" 3 6 · When the LCD displays "- - -", it is ready. Note: Temperature is a very important parameter for this test method. For best results the sample should have a temperature not exceeding 20°C. · Fill a cuvet up to 1. 5 cm (¾") below the rim with 10 mL of unreacted sample 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. ZERO · Wait for 30 seconds and add the content of one packet of HI 93714B-0 reagent. Replace the cap and shake gently for 10 seconds. 9 Interference may be caused by large amounts of turbidity that will cause high readings. Oxidizing (like chlorine) or reducing agents (such as sulfide or sulfur dioxide) are known to interfere with the measurement. Samples with high pH values should be adjusted to approximately pH 7 before testing. CAUTION: Cyanide, its solutions and hydrogen cyanide liberated by acids are very poisonous. 9V SLIDE OFF 12 10" 3 Accessories REAGENT SETS HI 93714-01 Reagents for 100 tests HI 93714-03 Reagents for 300 tests 6 10 mL · Immediately add the content of one packet of HI 93714C-0 reagent, replace the cap and shake vigorously for 20 seconds. 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. [. . . ] Remember to close the reagent bottle immediately after use. Note: Pay attention to the way the spoon is filled: - do not overfill it; · Press READ TIMED and the display will show the countdown prior to the measurement or, alternatively, wait for 25 minutes and press READ DIRECT. In both cases "SIP" will appear during measurement. 12 9 CE Declaration of Conformity 25' 3 READ TIMED READ DIRECT 6 Note: Shake the cuvet 4 or 5 times vigorously during the first 20 minutes of the timed reading. Accuracy is not affected by undissolved reagent powder. [. . . ]