Flir Extech RF20 User Guide

Flir Extech RF20 Refractometer manual cover

Pages 1

Year 2013

Language(s)

of 1

Flir Extech RF20 Refractometer Specification

The Flir Extech RF20 Refractometer is a precision optical instrument designed for measuring the concentration of aqueous solutions. It features a robust, portable design suitable for both laboratory and field applications. The device operates using the principle of refraction, where it measures the degree to which light changes direction as it passes through a liquid sample, providing accurate readings of the refractive index. The RF20 is specifically calibrated to measure Brix values, which are indicative of sugar content in solutions, making it particularly useful in the food and beverage industry for quality control and product consistency checks.

The refractometer is constructed with an easy-to-read analog scale, delivering reliable measurements with a resolution suitable for a variety of applications. It includes an adjustable focus eyepiece to ensure clear visibility of readings, even in challenging lighting conditions. The RF20's sturdy construction features a non-slip rubber grip and a durable metal body to withstand rigorous use. Its automatic temperature compensation (ATC) capability ensures measurement accuracy across a range of environmental conditions, eliminating the need for manual temperature corrections.

The device requires a minimal sample size, making it efficient and reducing waste. It is straightforward to use, requiring only a few drops of liquid placed on the measuring prism, which is then covered with a plastic plate to prevent spillage. The RF20 is equipped with a calibration screw for easy calibration using distilled water, ensuring consistent performance over time. This refractometer is ideal for professionals who require precise, quick, and easy measurements, supporting a wide range of applications beyond food and beverage, including chemical, pharmaceutical, and educational fields.

Flir Extech RF20 Refractometer F.A.Q.

How do I calibrate the Flir Extech RF20 Refractometer?

To calibrate the RF20, place a few drops of distilled water on the prism, close the cover, and adjust the calibration screw until the boundary line aligns with the zero mark on the scale.

What is the best way to clean the prism of the RF20 Refractometer?

Use a soft, lint-free cloth dampened with distilled water or isopropyl alcohol to gently wipe the prism surface. Avoid using abrasive materials that could scratch the prism.

How can I troubleshoot inaccurate readings on my RF20 Refractometer?

Ensure the prism is clean and properly calibrated. Verify that the sample is at the correct temperature and that the refractometer is not exposed to external light sources during measurement.

Can the RF20 Refractometer be used for measuring the concentration of sugar solutions?

Yes, the RF20 is designed to measure the concentration of sugar solutions, among other liquids. It provides readings in Brix, which is commonly used for sugar concentration.

What maintenance is required for the RF20 Refractometer to ensure longevity?

Regularly clean the prism and cover after each use, store the refractometer in a protective case, and calibrate it periodically to ensure accurate readings.

Why is it important to ensure the sample is at the correct temperature when using the RF20?

Temperature can affect the refractive index of a solution, leading to inaccurate readings. Ensure that the sample is at the temperature specified in the refractometer's manual for precise results.

How do I read the scale on the RF20 Refractometer?

Look through the eyepiece and focus until the scale is clear. The boundary line between the light and dark areas will intersect the scale, indicating the measurement reading.

What should I do if the scale appears blurry when looking through the RF20?

Adjust the eyepiece until the scale comes into focus. If the problem persists, check for dirt on the prism or eyepiece and clean them if necessary.

Is it possible to measure salt concentration with the RF20 Refractometer?

While primarily designed for sugar solutions, the RF20 can also measure salt concentration if the appropriate scale or conversion is available and calibrated.

What environmental conditions should be avoided when using the RF20 Refractometer?

Avoid using the refractometer in direct sunlight or near strong light sources, as well as in environments with extreme temperatures or humidity, which can affect accuracy.