• 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.
• 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.
Note: Any chlorine present in the sample
will interfere with the reading. To remove
the chlorine interference add one drop
of HI93755-53 Chlorine Remover to the
unreacted sample.
• Remove the cuvette from the meter and unscrew
the cap. Using a 1 mL syringe carefully add
exactly 1 mL of
HI775S
Reagent to the
sample. Replace the cap and gently invert
5 times. Place the cuvette back into the meter.
Note: Pay attention not to spill reagent
otherwise full color development may be
inhibited.
• Press the button. The instrument directly
displays the concentration of alkalinity in ppm
of CaCO
3
. Alkalinity conversion:
1 ppm CaCO
3
= 0.02 meq/L
= 0.056 dkH
The meter automatically turns off after
2 minutes.
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”
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.
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
[email protected].
Find your local Hanna Instruments Office on 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
HI775
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 Guide
Preliminary Examination
Range
0 to 500 ppm
Resolution
1 ppm
Accuracy
±5 ppm ±5% of reading @25 °C/77 °F
Light Source
Light Emitting Diode @610 nm
Light Detector
Silicon Photocell
Method
Colorimetric method. The reaction causes a distinctive range of colors
from yellow to blue to develop. This meter has been developed to work
with fresh water samples.
Environment
0 to 50 °C (32 to 122 °F); max 95% RH non-condesing
Battery Type
1.5V AAA (1 pc.)
Auto-Shut off
After 10 minutes of non-use and 2 minutes after reading
Dimensions
86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”)
Weight
52 g (1.84 oz.)
Specifications
Cover
Cuvette with cap
Cuvette holder
LCD Liquid Crystal Display
Operation Button
Functional Description
Errors and Warnings
Measurement Procedure
Hanna Instruments reserves the right to modify the design, construction or appearance of
its products without advance notice.