Hanna Instruments HI715 Manual de usuario
HI715
Ammonia Medium Range
INSTRUCTION MANUAL
Before using Hanna Instruments products, make sure that they are entirely suitable for
your specific application and for the environment in which they are used. Operation of
these instruments may cause unacceptable interferences to other electronic equipment, thus
requiring the operator to take all necessary steps to correct such interferences. Any variation
introduced by the user to the supplied equipment may degrade the instrument’s EMC
performance. To avoid damages or burns, do not put the instrument in microwave oven. For
yours and the instrument safety do not use or store the instrument in hazardous environments.
Recommendations for Users
Accessories
Reagent Sets
HI715-25 Reagents for 25 Ammonia Medium Range tests
Other Accessories
HI715-11 Ammonia MR Certified Standard Kit
HI731225 Cuvette Black Cap for Checker®HC Colorimeters (4 pcs.)
HI731318 Cloth for wiping cuvettes (4 pcs.)
HI731321 Glass cuvettes and Seal Cap for Checker®HC Colorimeters (4 pcs.)
HI731353 Cuvette Seal Cap for Checker®HC Colorimeters (4 pcs.)
HI740028P 1.5V AAA batteries (12 pcs.)
HI93703-50 Cuvette cleaning solution (230 mL)
IST715 05/18
HI715 is warranted for a period of one year after date of purchase against defects in
workmanship and materials when used for their intended purpose and maintained according
to instructions. This warranty is limited to repair or replacement free of charge. Damage due
to accidents, misuse, tampering or lack of prescribed maintenance is not covered. If service
is required, contact your local Hanna Instruments Office. If under warranty, report the model
number, date of purchase, serial number and the nature of the problem. If the repair is not
covered by the warranty, you will be notified of the charges incurred. If the instrument is to
be returned to Hanna Instruments, first obtain a Return Goods Authorization number from the
Technical Service department and then send it with shipping costs prepaid. When shipping any
instrument, make sure it is properly packed for complete protection.
Warranty
• 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 HI731318 or a lint-free cloth prior
to insertion.
• Shaking the cuvette can generate bubbles, causing higher
readings. To obtain accurate measurements, remove such 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.
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.
Battery Management
• 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.
• Remove the cuvette from the meter and unscrew
the cap. Add 4 drops of HI715A-0 reagent A.
Replace the cap and swirl the solution.
• Unscrew the cap and add 4 drops of HI715B-0
reagent B. Replace the cap and swirl the
solution. Place the cuvette back into the meter.
• Press and hold the button until the timer is
displayed on the LCD (the display will show
the countdown prior to the measurement)
or, alternatively, wait for 3 minutes and
30 seconds and press the button.
• The instrument displays the results in mg/L
(ppm) of ammonia nitrogen (NH3-N). To convert
the reading to ppm of ammonia (NH3), multiply
the reading by factor of 1.214. The meter
automatically turns off after 10 minutes.
Measurement Procedure
Hanna Instruments reserves the right to modify the design, construction or appearance of
its products without advance notice.
Cover
Cuvette with cap
Cuvette holder
LCD Liquid Crystal Display
Operation Button
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 “0.00” 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
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 HI715 meter is supplied complete with:
• Sample Cuvettes and Caps (2 pcs.)
• Reagents for 25 tests
• 1.5V AAA Battery (1 pc.)
• Instruction Manual and Quick Reference Guide
Preliminary Examination
Range 0.00 to 9.99 ppm NH3-N
Resolution 0.01 ppm
Accuracy ±0.05 ppm ±5% of reading @25 °C/77 °F
Light Source Light Emitting Diode @470 nm
Light Detector Silicon Photocell
Method
Adaptation of the ASTM Manual of Water and Environmental
Technology, D1426, Nessler Method. The reaction between ammo-
nia and reagents causes a yellow tint in the sample.
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
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
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