• Fill both cuvettes with 10 mL of unreacted
sample. Replace the cap on one of the cuvettes,
this is the zero.
• To the second cuvette add one packet of
HI770A-25
reagent. Replace the cap and shake
gently until the reagent is completely dissolved.
•
Unscrew the cap and add one packet of
HI770B-25
reagent. Replace the cap and
shake vigorously until the reagent is completely
dissolved. Wait 10 minutes.
• Unscrew the cap and add one packet of
HI770C-25
reagent. Replace the cap and shake
gently until the reagent is completely dissolved.
Wait 2 minutes.
• During the two minute reaction time. 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.
• Place the first cuvette (unreacted) 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.
• After the two minute reaction time, place the
second cuvette (reacted) into the meter and
close the meter’s cap. Press the button.
• The instrument directly displays the concentration
in ppm of silica on the LCD. To convert the
reading to ppm silicon (Si) multiply the reading
by 0.467. The meter automatically turns off after
2 minutes.
Measurement Procedure
Hanna Instruments reserves the right to modify the design, construction or appearance of
its products without advance notice.
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.
Cover
Cuvette with cap
Cuvette holder
LCD Liquid Crystal Display
Operation Button
Functional Description
Errors and Warnings
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
HI770
meter is supplied complete with:
• Sample Cuvettes and Caps (2 pcs.)
• Reagents for 6 tests
• 1.5V AAA Battery (1 pc.)
• Instruction Manual and Quick Reference Guide
Preliminary Examination
Range
0 to 200 ppm
Resolution
1 ppm
Accuracy
±2 ppm ±5% of reading @25 °C/77 °F
Light Source
Light Emitting Diode @470 nm
Light Detector
Silicon Photocell
Method
Adaptation of the USEPA method 370.1 and Standard Method
4500-SiO
2
C.
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