Introduction; Safety Measures - Mettler Toledo Refracto 30P Bedienungsanleitung

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Introduction

The METTLER TOLEDO Refracto 30P is a portable measuring device suited for
determining the refractive index of liquids. The device determines the refractive
index by measuring the critical angle of total reflection of a light beam falling on
the sample. To carry out measurements, the sample is either pipetted onto the
measuring cell or the measuring cell is immersed directly in the sample.
The results are automatically calculated into one of the following units: Refractive
index, Brix%, HFCS42, HFCS55, °Baumé, °Oechsle (CH,D), °KMW (Babo), T.A.
1990, % weight, % volume, specific gravity and freezing point (in °C or °F) of
sodium chloride solutions and ethanol / water mixtures, % weight, % volume
and freezing point (in °C and °F) of ethylene glycol and propylene glycol / water
mixtures, % weight and % volume of isopropanol / water mixtures or a user-
defined unit. The value is then shown on the display.
For exact measurements, it is imperative to correct the temperature´s influence on
the refractive index. The Refracto 30P can carry out this result correction auto-
matically, depending on the selected unit. For this task, the device measures the
sample temperature by means of two built-in temperature sensors. For the cor-
rection it uses either internally-stored tables or one of the 10 temperature-com-
pensation coefficients entered by the user.
The results, along with the sample identification, the temperature and tempera-
ture-compensation coefficient, can be saved to the device, and then be trans-
ferred via the integrated infrared interface to a computer or to a printer.
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Safety measures

Measures for your protection
- Do not work in an explosion-hazardous environment ! The in-
strument housing is not gastight. Otherwise, there is a risk of
explosion from sparks and/or risk of corrosion by gasses which
can seep in.
Measures for operational safety
- When doing dip-in measurements, never immerse the instrument
deeper into the sample than the indicated line. The instrument is
only resistant to splashed water.
- Use batteries of the specified type only. Otherwise, proper opera-
tion cannot be guaranteed.
- Do not submerge the housing in liquid ! The instrument is only
resistant to splashed water.
- Ensure that the following environmental conditions are met:
• no strong vibrations present
• not in direct sunlight
• no high humidity present
• no corrosive gasses present
• temperature between – 20 °C and 70 °C
• no strong electrical or magnetic fields present
METTLER TOLEDO Refracto 30P
Introduction / Safety measures
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