euromex RF.6650 Analog Refractometer User Manual
- August 8, 2024
- euromex
Table of Contents
euromex RF.6650 Analog Refractometer User Manual
Introduction
With your purchase of a EUROMEX hand refractometer you have chosen for a quality product. The EUROMEX hand refractometer RF.6650 is developed for use in garages, laboratories and industry. The maintenance requirement is limited when using the refractometer in a decent manner. This manual describes the construction of the refractometer, how to use it and the maintenance of it
General safety instructions
- This product is a high quality optical instrument. Delicate handling is required
- Impacts, even small ones, can affect the precision of the device
- Keep the device and its optics clean for maximum performance
- Precautious should be taken with the samples; substances under observation may be a risk to the health of humans and other living organisms or the environment
Construction of the refractometer
The names of the parts are listed below and are Indicated in the picture on page 2:
Functions of the refractometer
The hand refractometer RF.6650 is used for measuring values in Ethylene glycol, Propylene glycol and battery acid. The specifications are listed below
Standard accessories
Supplied with the instrument: vinyl case, screwdriver for calibrating, 2 plastic pipettes and a cleaning cloth
Working with the refractometer
Before each measurement the scale must be checked wether it is calibrated correctly. If the scale needs to be corrected, this is done by turning screw C with the supplied screwdriver. Follow the below mentioned procedure:
- Open prismcover (B)
- Place a drop of distilled water on the surface (A) of the prism
- Close the cover and look through the eyepiece (D)
- The borderline between dark and light should fall exactly on the “0” position (WATERLINE). If this is not the case, correct the scale with the screwdriver
Light entrance
Depending on the sample fluid, normal daylight is sufficient to get a good
reading. If not, an extra light source can be used
Actual measurement
Remove the distilled water form the prism surface. Place a drop of the sample
fluid on the surface and close the cover. Look through the eyepiece and read
the value as indicated on the scale
Maintenance and cleaning
Always clean the surface of the prism, aswell as the cover immediately after use with a soft tissue
Warning
Cleaning cloths containing plastic fibres can damage the coating of the prism!