JULA 619299 Optical Antifreeze Tester Instruction Manual
- June 5, 2024
- JULA
Table of Contents
JULA 619299 Optical Antifreeze Tester
SAFETY INSTRUCTIONS
Read these instructions carefully before use
- Careful calibration is essential for correct results. The prism and sample must have the same temperature to ensure correct results.
- Do not use the antifreeze tester in wet conditions and do not immerse it in water. If the instrument fogs, this means water has got into the casing. Contact a qualified service technician or your dealer.
- Do not use the antifreeze tester to test chemicals with an abrasive or corrosive effect. They can damage the coating on the prism.
- Clean the instrument with a soft, damp cloth after each measurement. Clean the prism regularly to prevent incorrect readings and damage to the prism coating.
- This is an optical instrument. It requires careful handling and careful storage to prevent damage to the optical components and other parts. If used and cared for correctly, the antifreeze tester will last for many years.
DESCRIPTION
- Lid
- Calibration screw
- Focus setting
- Eyepiece
- Rubber grip
- Prism
OPERATION
Step 1
Open the transparent cover and drip 2–3 drops of distilled water on the
prism. Close the cover so that the water spreads over the whole surface of the
prism, without air bubbles or dry patches. Allow the water to cover the prism
for about 30 seconds before continuing with step 2, so that it obtains the
correct temperature – i.e. the same temperature as the antifreeze tester.
Step 2
Hold the transparent cover up to a light source and look into the eyepiece.
(This product includes a built-in light as light source for more convenient
use.) You will see a circle with a graduated scale in the middle. (You may
need to adjust the eyepiece to see the scale clearly). The upper part of the
field should be blue and the lower white.
Step 3
Look into the eyepiece and turn the calibration screw until the interface
between the upper blue and lower white field are precisely at the zero point,
as illustrated.
This completes the calibration. Check that the room temperature is correct for
the liquid you are using (20°C). If the temperature in the room or
surroundings (not the sample) changes by more than 5°C, we recommend that you
recalibrate to ensure precise readings.
If the instrument has automatic temperature compensation, the ambient
temperature in the room must be 20°C when the instrument is recalibrated.
When the antifreeze tester is calibrated, any changes in temperature from
10–30°C will not affect the precision of the instrument.
Step 4
Now drip a few drops of the sample on the prism, close the transparent cover
and read off the scale. You will see the value where the interface between the
blue and white field cross the scale. The scale gives a direct reading of the
concentration.
The left scale is to test the battery liquid (H2SO4) density to determine if
the battery need to be charged or not (Rechargeable, Fair, Good).
The middle scale is to test the antifreeze fluid (Propylene or Ethylene)
freezing point. The right scale is to test the glass cleaner freezing point.
Care for the environment!
Recycle discarded product in accordance with local regulations.
References
Read User Manual Online (PDF format)
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