Hanna Instruments HI 83730 - Manual (Page 2)

READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT
• Remove the cap from a vial of HI 83730A-0 Peroxide reagent.
• Use the graduated syringe to add exactly 1 mL of oil. For a
correct use of the syringe, please see the paragraph "General
tips for an accurate measurement".
• Add the sample to the vial and replace the cap.
• Mix by inverting the vial twice.
• Turn on the meter by pressing the ON/OFF key. When the
LCD displays “---”, it is ready.
• Place the vial into the instrument.
• Press the ZERO key and “----” will
blink on the display.
• After a few seconds the display will
show “-0.0-”. The meter is zeroed
and ready for measurement. Remove
the vial.
• Remove the cap from the vial and
add one packet of HI 83730B-0
Peroxide reagent.
• Replace the cap and press TIMER to
start the countdown.
• Mix VIGOROUSLY for 1 minute.
• Insert the vial into the instrument
and wait for 5 minutes.
Note: 30 seconds before countdown finishes, invert the vial twice.
CE declaration of conformity
Instructions “No Light”: the lamp is not working because
of a malfunction. Contact your dealer or the
nearest Hanna Customer Service Center.
A flashing value of the maximum
concentration indicates an over range
condition. The concentration of the sample
is beyond the programmed range: dilute the
sample and measure again.
The sample absorbs less light than the zero
reference. Check the procedure and make
sure you use the same cuvet for reference
(zero) and measurement.
“Inverted”: the sample and the zero cuvet
are inverted.
General tips for an accurate measurement
HI 83730-20 reagents kit (21 tests)
HI 93703-50 cleaning solution, 230 mL
HI 740216 test tube cooling rack
HI 740142P 1 mL graduated syringe, 10 pcs.
HI 731318 tissue for wiping cuvets, 4 pcs.
HI 710005 voltage adapter from 115V to 12 Vdc
HI 710006 voltage adapter from 230V to 12 Vdc
Accessories
The instructions listed below should be carefully followed during
testing to ensure best accuracy.
• In order to measure exactly 1 mL of oil:
(a) Push the plunger completely into the syringe.
(b) Insert the syringe in the oil and push the plunger up and
down twice to rinse and eliminate air bubbles; then pull
the plunger up until the lower edge of the seal is exactly
on the 0.0 mL mark.
(c) Take out the syringe and clean the outside of the syringe
tip. Then, keeping the syringe in vertical position above
the vial, push the plunger completely down into the
syringe.
• In order to avoid reagent leaking and to obtain more
accurate measurements, it is recommended to close the cuvet
very well with the cap.
• Whenever the cuvet is placed into the
measurement cell, it must be dry
outside, and completely free of
fingerprints, oil or dirt. Wipe it throughly
with HI 731318 or a lint-free cloth
prior to insertion.
• The official method EC 2568/91 recommends to work at room
temperature, between 15 and 25 °C.
Battery replacement
• Proper use of the powder reagent packet:
(a) use scissors to open the powder pocket;
(b) push the edges of the packet to form a spout;
(c) pour out the content of the packet.
Health and safety
Recommendations for Users
Before using these 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 equipments, this
requiring the operator to take all necessary steps to correct
interferences. Any variation introduced by the user to the supplied
equipment may degrade the instruments' EMC performance.
To avoid damages or burns, do not put the instrument in
microwave ovens. For yours and the instrument safety do not use
or store the instrument in hazardous environments.
The chemicals contained in this kit may be hazardous if improperly
handled. Read the relevant Health and Safety Data Sheet before
performing this test.
Battery replacement must only take
place in a non-hazardous area. The
blinking “ ” will appear when the
batteries power gets low.
When batteries are completely
discharged, “0% bAtt” will appear and
after two seconds the instrument is
switched off.
Remove the battery cover from the
bottom of the instrument and change
the old batteries with 4 fresh 1.5V
batteries, paying attention to the correct
polarity.
Replace the cover.
• When the countdown finishes, the meter makes the
reading. If you have not used the TIMER key, press READ
to make the measure. In both cases the display will show
“----” during the measurement.
• The meter directly displays the peroxide value in meq O
2
/kg
on the LCD.
Notes:
• To convert the reading to mmol O
2
/kg multiply the reading
by 0.5.
• To convert the reading to mg O
2
/kg multiply the reading
by 8.