Description:
A refractometer is a device that allows to determine the physical properties of a liquid by measuring the refractive index at the boundary of the media.
Thanks to this, you can determine:
- battery level
- freezing point of liquids based on propylene glycol or ethyl alcohol
- freezing point of the washer fluid.
Professional refractometer for measuring operating fluids of cars, trucks and buses. It is designed to determine the freezing point of windscreen washer fluid, proplene glycol coolant and ethyl glycol. It also gives the density range of the electrolyte.
The kit includes a sampling pipette and a cleaning cloth. All packed in a solid plastic box.
Directions for use:
Fluid measurement:
- Use a pipette to draw a small amount of liquid.
- Lift the scattering plate and apply 2-3 drops of liquid on the prism of the instrument.
- Lower the scattering plate so that it distributes the test liquid evenly over the prism surface. Air bubbles that may falsify the measurement should not be visible.
- Wait about 30 seconds for the liquid to reach the temperature of the instrument, and then direct the scattering plate towards the light source, look at the eyepiece.
If the image in the eyepiece is blurred, adjust the focus by rotating the focus ring. The boundary between the dark and light regions will determine the properties of a given fluid read on an appropriate scale.
If the battery electrolyte is tested, the reading shall be carried out on the scale indicated by the battery symbol. The result is given in kg/l, and the scale is additionally described by the battery charge levels. If the limit falls in the area described "GOOD", it means that the battery does not require charging "FAIR" – charging is not yet necessary, but "RECHARGE" may be required soon – charging the battery is required.
If a liquid based on propylene glycol is tested, the freezing point can be read on the scale described "PROPYLENE".
If a liquid based on ethyl alcohol is tested, the freezing point can be read on the scale described 'ETHYLENE'.
If windscreen washer fluid is tested, the freezing point can be read on a scale marked with the washer symbol.
Calibration of the instrument:
Remark! Calibration should be carried out at an ambient temperature of 20 ° C. It is also necessary to ensure that the instrument has reached the ambient temperature. Before each measurement, the correctness of the measurement must be checked. To do this, use distilled water and measure as described above. The boundary of the light and dark areas should coincide with the line marked "WATERLINE". If this is not the case, this should be achieved by turning the calibration screw with the included screwdriver.
A properly calibrated instrument should allow measurements at ambient temperatures in the range from -10 ° C to +50 ° C.
Contents:
Along with the refractometer, the package should include: a pipette, a screwdriver and a cloth.
Technical data:
Gross Weight (packaged) 0.2750