Hanna Instruments HI 739 User Manual
HI 739
Fluoride High Range
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 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 notify your Dealer.
Each HI 739 meter is supplied complete with:
• Two Sample Cuvettes and Caps
• 1 bottle (30 mL) of HI 739AS Fluoride HR Reagent A
• 1 bottle (120 mL) of HI 739BS Fluoride HR Reagent B
• 2 x 1 mL syringe with tip
• 1 plastic pipette
• 1 x 1.5V AAA Battery
• Instruction Manual
For more details about spare parts and accessories
see “Accessories”.
Technical specifications:
Range 0.0 to 20.0 ppm
Resolution 0.1 ppm
Accuracy ±0.5 ppm ±5 % of reading @ 25 °C / 77 °F
Typical EMC Dev. ±0.1 ppm
Light Source Light Emitting Diode @ 575 nm
Light Detector Silicon Photocell
Method Adaptation of the
of Water and Wastewater, 18
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 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight 64 g (2.25 oz.)
Standard Methods for the Examination
th
edition
, SPADNS method.
Functional description:
1. Dust cover.
2. Cuvette with cap.
3. Cuvette holder.
4. Liquid Crystal Display.
5. 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 “0.00” indicates that the sample absorbs
more 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.
Measurement procedure: Accessories:Tips for an accurate measurement
• 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.
• Using supplied syringe add 2 mL (1 mL
twice) of HI 739AS reagent to the cuvette
and use the pipette to fill the cuvette up to
the mark with HI 739BS reagent.
• Replace the cap and invert several times to
mix.
• Place the cuvette into the meter and close
the meter’s cap.
• Press and hold the button until the timer is
displayed on the LCD. Alternatively wait for
one minute and then press the button. When
the display shows “Add”, “C.2” with “Press”
blinking the meter is zeroed.
• Remove the cuvette from the meter and
unscrew the cap. Using the unused syringe,
add exactly 1.00 mL of sample.
• Replace the cap and invert several times to
mix.
• Place the cuvette back into the meter.
• Press and hold the button until the timer is
displayed on the LCD. Alternatively wait for
one minute and then press the button.
• The instrument directly displays the
concentration of fluoride in ppm.
The meter automatically turns off after 10
minutes.
2x
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.
Battery management
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.
REAGENT SETS
HI 739-26 Liquid Reagent Set for 30 tests
OTHER ACCESSORIES
HI 739-11 Fluoride HR Certified Standard Kit
HI 740142 1 mL graduated syringe
HI 740144P Pipette tip for syringes (10 pcs)
HI 740028 1.5V AAA batteries (4 pcs)
HI 731318 Cloth for wiping cuvettes (4 pcs)
HI 731321 Glass cuvettes (4 pcs)
HI 731225 Cuvette cap for checker HC (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.
Hanna Instruments reserves the right to modify the design, construction or
appearance of its products without advance notice.
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
IST739 11 /11
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