Hanna Instruments Color of Water HI 727 User manual

Color of Water Preliminary examination:
Please examine this product carefully. Make sure that the instrument is not damaged. If
any damage occurred during shipment, please notify your Dealer.
Each HI 727 meter is supplied complete with:
• Two Sample Cuvettes and Caps
• 1 x 1.5V AAA Battery
• Instruction Manual
HI 727
Technical specifications:
Range 0 to 500 PCU
Resolution 5 PCU
Accuracy ±10 PCU ±5% of reading @ 25 °C / 77 °F
Light Source Light Emitting Diode @ 470 nm
Light Detector Silicon Photocell
Method Adaptation of the Standard Methods for the Examination
of Water and Wastewater 21Th edition, Colorimetric
Platinum Cobalt method.
Environment 0 to 50 °C (32 to 122 °F);
max 95% RH non-condensing
Battery Type 1 x 1.5V AAA
Auto-Shut off After 2minutes of non-use
Dimensions 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight 64 g (2.25 oz.)
Functional description:
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” 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.
1. Cuvette cap.
2. Cuvette with cap.
3. Cuvette holder.
4. Liquid Crystal Display.
5. Button.
For more details about spare parts and accessories
see “Accessories”.
www.hannainst.com
Dear Customer,
Thank you for choosing a Hanna Instruments Product.
Please read this instruction manual carefully before using the instrument. If you need
additional technical information, do not hesitate to e-mail us at [email protected]
or view our worldwide contact list at www.hannainst.com.

•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 one cuvette up to the 10 mL mark with
deionized water and replace the cap. This is
the blank.
•Place the blank 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.
•Fill second cuvette up to the 10 mL mark with
unfiltered sample and replace the cap. This is
the apparent color.
•Insert the apparent color cuvette into the meter
and close the meter’s cap.
•Press the button and the meter directly displays
the value of apparent color.
•Remove the cuvette and press the button twice
to restart the meter.
•Filter 50 mL of sample through a 0.45 µm
membrane filter into a beaker.
•After measuring of apparent color rinse the
cuvette three times with filtered sample and
then fill it up to the 10 mL mark with the
filtered sample and replace the cap. This is
the true color.
•Follow the procedure above to re-zero the
meter using the blank cuvette.
•Insert the true color cuvette into the instrument.
•Press the button and the meter directly displays
concentration in color units of the true color on
the LCD. The meter automatically turns off
after 2 minutes.
10 mL
•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
HI 731318 or a lint-free cloth prior to insertion.
•Shaking the cuvette can generate bubbles, causing higher readings. To obtain
accurate measurements, remove 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.
REQUIRED ACCESSORIES
0.45 µm membrane filter for true color measurement.
OTHER ACCESSORIES
HI 727-11 Color of Water Certified Standard Kit
HI 731318 Cloth for wiping cuvettes (4 pcs.)
HI 731321 Glass cuvettes (4 pcs.)
HI 731225 Cuvette black cap for checker HC (4 pcs.)
HI 731353 Cuvette seal cap for checker HC (4 pcs.)
HI 740028 1.5V AAA batteries (4 pcs.)
HI 93703-50 Cuvette cleaning solution (230 mL)
Recommendations for Users
Before using this product, make sure that it is entirely suitable for your specific application and for the
environment in which it is used.
Operation of this instrument may cause unacceptable interferences to other electronic equipment, thus
requiring the operator to take all necessary steps to correct interferences.
Any variation introduced by the user to the supplied equipment may degrade the instrument’s EMC
performance.
To avoid damage or burns, do not put the instrument in microwave oven. For the safety of you and the
instrument do not use or store the instrument in hazardous environments.
For additional information, contact your
dealer or the nearest
Hanna Customer Service Center.
To find a Hanna Office in your area,
visit our web site:
www.hannainst.com
Hanna Instruments reserves the right to modify the design, construction or
appearance of its products without advance notice.
Battery management
To save the battery, the instrument shuts down after 2 minutes of non-use.
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.
•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.
IST727 04/13
Measurement procedure: Accessories:Tips for an accurate measurement
10 mL
10 mL