Metria RST111, User Manual, Page: 3 / 12

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1. Safety Instructions
•
Please read this manual carefully before installing or operating this equipment. The instrument shall not
be modified in any way. Any modification will void the warranty and may result in potential safety hazard.
We are not responsible for any injury or damage caused by modifying the instrument without authorization.
•
If the equipment is used in a manner not specified by the manufacturer, the protection provided by the
equipment may be impaired. The instrument shall not be modified or altered in any way.
•
We are not responsible for any injury or damage caused by using the instrument for any non-intended
purpose.
2. Intended use
This refractometer is intended for measuring the refractive index nD and the average dispersion nF - nC of
transparent or translucent liquid, or solid substance (mainly intended for measuring transparent liquid). In case
of the instrument being connected with a thermostat, it will be able to measure the refractive index nD at a
temperature between 0 and 70.
Both, the refractive index and the average dispersion are the important optical constants, through which we
can understand the optical performance, purity, concentration, as well as dispersion of a substance. In this
instrument, based on the formula provided by the International Commission of Uniform Method of Sugar
Analysis (ICUMSA) in 1974, the refractive index is converted into the mass fraction (Brix) of cane sugar
solution, with a range of conversion from 0 to 95%. Therefore, this instrument has found an increasingly wide
utilization in the fields as Petroleum, oil, pharmaceutical, paint, food, chemical and sugar refining industries,
as well as geological prospecting enterprises, colleges, universities and scientific research institutions.
3. Inspection
3.1 Receiving Inspection
Unpack the equipment carefully and check for any damages which may have arisen during transport. Please
contact your supplier for technical support.
3.2 Listing of Items
The package includes the following items:
Items in Portable digital
refractometer
Qty
Refractometer 1
Batteries 1
Carrying case 1
Screw driver 1
Thermometer 1
Standard sample 1
Naphthalene bromide sample 1
Table 1