Tips for an Accurate Measurement • It is important that the sample does not contain any debris. • Whenever the cuvette is placed into the measurement cell, it must be dry outside, and completely free of fingerprints, oil and dirt. Wipe it thoroughly with HI731318 or a lint-free cloth prior to insertion. • Shaking the cuvette can generate bubbles, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette. • Do not let the reacted sample stand for too long after reagent is added, as accuracy will be affected. • After the reading it is important to immediately discard the sample, otherwise the glass might become permanently stained. Battery Management To save the battery, the instrument shuts down after 7 minutes of non-use and 2 minutes after reading. One fresh battery lasts for a minimum of 5000 measurements. When the battery is dead the instrument will display “bAd” then ”bAt” for 1 second and then turns off. To restart the instrument, the battery must be replaced with a new one. To replace the instrument’s battery: • Turn the instrument off by holding the button until the meter shuts off. • Turn the instrument upside down and remove the battery cover with a screwdriver. Recommendations for Users Before using this product, make sure it is entirely suitable for your specific application and for the environment in which it is used. Any variation introduced by the user to the supplied equipment may degrade the meter’s performance. For yours and the meter’s safety do not use or store the meter in hazardous environments. Accessories Reagent Sets HI774-25 Other Accessories HI774-11 HI731318 HI731315 HI731353 HI740028P HI93703-50 Reagents for 25 Phosphate Ultra Low Range tests Phosphate Ultra Low Range Certified Standard Kit Cloth for wiping cuvettes (4 pcs.) Glass Cuvettes and Caps for Checker® HC Colorimeters (2 pcs.) Cuvette Seal Cap for Checker® HC Colorimeters (4 pcs.) 1.5V AAA batteries (12 pcs.) Cuvette cleaning solution (230 mL) Warranty • Remove the battery from its location and replace it with a new one, inserting the negative end first. • Insert the battery cover and replace the screw with a screwdriver. HI774 is warranted for a period of one year after date of purchase against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. This warranty is limited to repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered. If service is required, contact your local Hanna Instruments Office. If under warranty, report the model number, date of purchase, serial number and the nature of the problem. 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 Return Goods Authorization number from the Technical Service department and then send it with shipping costs prepaid. When shipping any instrument, make sure it is properly packed for complete protection. IST774 10/18 INSTRUCTION MANUAL HI774 Phosphate Ultra Low Range Thank You Functional Description Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instrument. Cover LCD Liquid Crystal Display Preliminary Examination Range Resolution Accuracy Light Source Light Detector Method Environment Battery Type Auto-Shut off Dimensions Weight • Fill the cuvette with 10 mL of unreacted sample and replace the cap. Place the cuvette into the meter and close the meter’s cap. • Press the button. When the display shows “Add”, “C.2” with “Press” blinking the meter is zeroed. • Remove the cuvette from the meter and unscrew the cap. Add the content of one packet of HI774-0 reagent. Replace the cap and shake gently for 2 minutes until the powder is completely dissolved. Place the cuvette back into the meter. • Press and hold the button until the timer is displayed on the LCD (the display will show the countdown prior to the measurement) or, alternatively, wait for 3 minutes and press the button. • The instrument directly displays the concentration of phosphate in ppm. The meter automatically turns off after 2 minutes. Cuvette holder For technical support, contact your local Hanna Instruments Office or e-mail us at email@example.com Specifications Turn the meter on by pressing the button. All segments will be displayed. When the display shows “Add”, “C.1” with “Press” blinking, the meter is ready. Cuvette with cap For more information about Hanna Instruments and our products, visit www.hannainst.com. Please examine this product carefully. Make sure that the instrument is not damaged. If any damage occurred during shipment, please contact your local Hanna Instruments Office. Each HI774 meter is supplied complete with: • Sample Cuvettes and Caps (2 pcs.) • Reagents for 10 tests • 1.5V AAA Battery (1 pc.) • Instruction Manual and Quick Reference Guide Measurement Procedure • Operation Button Errors and Warnings Light High: There is too much light to perform a measurement. Please check the preparation of the zero cuvette. Light Low: There is not enough light to perform a measurement. Please check the preparation of the zero cuvette. Inverted Cuvettes: The sample and the zero cuvette are inverted. 0.00 to 0.90 ppm 0.01 ppm ±0.02 ppm ±5% of reading @25 °C/ 77 °F Light Emitting Diode @525 nm Silicon Photocell 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 cuvette for reference (zero) and measurement. Over Range: A flashing value of the maximum concentration indicates the reading is over range. Dilute the sample and re-run the test. Adaptation of Standard Methods for the Examination of Water and Wastewater, 20th edition, Ascorbic Acid method. The reaction between phosphate and the reagent causes a blue tint in the sample. 0 to 50 °C (32 to 122 °F); RH max 95% non-condensing 1.5V AAA (1 pc.) After 7 minutes of non-use and 2 minutes after reading 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”) 52 g (1.84 oz.) Battery Low: The battery must be replaced soon. Dead Battery: This indicates that the battery is dead and must be replaced. Once this indication is displayed, normal operation of the instrument will be interrupted. Change the battery and restart the meter. Hanna Instruments reserves the right to modify the design, construction or appearance of its products without advance notice.
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