Hanna Instruments HI 746 User manual

Iron Low Range 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 746 meter is supplied complete with:
• Two Sample Cuvettes and Caps
• Reagents for 25 tests
• Two 25 mL Glass Cylinders with Rubber Cap
• 1 x 1.5V AAA Battery
• One Cloth for wiping cuvettes
• Instruction Manual and Quick Reference
HI 746
Technical specifications:
Range 0 to 999 ppb
Resolution 1 ppb
Accuracy ±20 ppb ±5% of reading @ 25 °C / 77 °F
Light Source Light Emitting Diode @ 575 nm
Light Detector Silicon Photocell
Method Adaptation of the TPTZ method. The reaction between
iron and the reagent causes a violet tint in the sample.
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 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:
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 graduated cylinder up to the 25 mL
mark with deionized water. Fill the second
cylinder to the 25 mL mark with sample.
Add the content of one packet of HI 746-0
reagent to each cylinder.
•Close the cylinders. Shake vigorously for
30 seconds.
•Wait 30 seconds, press and hold the button
until the timer is displayed on the LCD (the
display will show a countdown).
•Fill the first cuvette with 10 mL of reacted
deionized water, this is the blank.
•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.
•Fill the second cuvette with 10 mL of reacted
sample.
•Place the cuvette into the meter, close the
meter’s cap and press the button.
•The instrument directly displays the
concentration of iron in ppb. The meter
automatically turns off after 10 minutes.
•It is important that the sample does not contain any debris.
•Whenever the cuvette is placed into the measurement cell, it must by 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.
REAGENT SETS
HI 746-25 Reagents for 25 Iron Low Range tests
OTHER ACCESSORIES
HI 746-11 Iron LR Certified Standard Kit
HI 731318 Cloth for wiping cuvettes (4 pcs.)
HI 731321 Glass cuvettes (4 pcs.)
HI 731225 Black Cuvette Cap for Checker HC (4 pcs.)
HI 740220 Glass Cylinders with Cap, 25 mL (2 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
IST746 08/15
Measurement procedure: Accessories:Tips for an accurate measurement
To save the battery, the instrument shuts down after 10 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.
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