Aqua Medic refractometer LED Mode D'emploi page 4

First of all, open daylight plate and place 3 drops of distilled water on the main prism. Close the
daylight plate carefully avoiding any air bubbles. For about 30 seconds, allow the sample to adjust
to the same temperature as the refractometer. Hold daylight plate in the direction of a light source
and look into the eyepiece. The eyepiece may be turned for focussing. You will see a circular field
containing numbers. The upper part of the field should be blue while the lower part should be
white. Look into the eyepiece and turn the calibration screw until the boundary line between the
upper blue field and the lower white field meet exactly on the zero scale. That is the end of the
calibration process. Now you can use this refractometer for measurements of room temperature of
10 °C – 30 °C.
4. Measurement
The measurement is done the same way as the calibration. You put 2 – 3 drops of the sample on
the main prism and close the daylight plate carefully. If you look through the eyepiece, now, you
can see the measured value as a boundary line of the blue and white zone. You can see the density
(kg/l) as well as the salinity in parts per thousand.
After each use, clean the instrument by using a soft cloth. Don't put it into water since then it
might become foggy and useless. The Refractometer is an optical instrument. It requires careful
handling and storage. With care, this instrument will provide years of reliable service
5. Change battery in the LED cover plate
1. Take off the button sticker 2. Take out the chip.
with care.
4. Insert the new battery.
6. Warranty
Should any defect in materials or workmanship be found within 24 months of the date of purchase
AB Aqua Medic undertakes to repair, or at our option replace, the defective part free of charge –
always provided the product has been installed correctly, is used for the purpose that was intended
by us, is used in accordance with the operating instructions and is returned to us carriage paid.
Proof of Purchase is required by presentation of the original invoice or receipt indicating the
dealer's name, the model number and date of purchase. This warranty may not apply if any model
or production number has been altered, deleted or removed, unauthorised persons or organisations
have executed repairs, modifications or alterations, or damage is caused by accident, misuse or
neglect. Please note that the product is not defective under the terms of this Warranty where the
product, or any of its component parts, was not originally designed and / or manufactured for the
market in which it is used. These statements do not affect your statutory rights as a customer.
AB Aqua Medic GmbH - Gewerbepark 24 - 49143 Bissendorf/Germany
Current manuals are available for download at www.aqua-medic.de.
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5. Put the chip back in
- Technical changes reserved – 08/2018
3. Remove the old battery.
6. Re-paste the sticker. Done!
.