Hanna Instruments Checker HI772 Instruction Manual

INSTRUCTION MANUAL
HI772
Marine Alkalinity
Thank You
Thank you for choosing a Hanna Instruments product. Please read this instruction
manual carefully before using the instrument.
For more information about Hanna Instruments and our products, visit
www.hannainst.com.
For technical support, contact your local Hanna Instruments Office or e-mail us at
tech@hannainst.com

Preliminary Examination

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 HI772 meter is supplied complete with:
• Sample Cuvettes and Caps (2 pcs.)
• Reagents for 25 tests
• 1 mL syringe with tip
• 1.5V AAA Battery (1 pc.)
• Instruction Manual and Quick Reference
For more details about spare parts and accessories see "Accessories".

Specifications

Range 0.0 to 20.0 dKH
Resolution 0.1 dKH
Accuracy ±0.3 dKH ±5% of reading @ 25 ˚C / 77 ˚F
Light Source light emitting diode @ 610 nm
Light Detector silicon photocell
Colorimetric method. The reaction causes a distinctive range of
Method
colors from yellow to green to greenish blue to develop
Environment 0 to 50 °C (32 to 122 °F); RH max 95% non-condensing
Battery Type 1.5V AAA (1 pc.)
Auto-off after 10 minutes of non-use
Dimensions 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5")
Weight 64 g (2.3 oz)

Functional Description

Cover
Cuvette with cap
Cuvette holder
LCD Liquid Crystal Display
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.
Under Range: A blinking "0.0" 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.
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.