Mettler Toledo Refracto 30PX Instrucciones De Manejo página 13

Alcohol (alcohol determinations)
Measurements of ethanol/water mixtures. Display of the results in one of the
following units: % weight (wt%), % volume (vol%) of ethanol at 20 °C, spe-
cific gravity (SG) or freezing point (FP) of the mixture (in °C or °F). Selection of
the temperature unit for the freezing point via Temp. Unit (see chapter 5.3).
Range of measurement: 0.0 ... 50.0 % weight (0.0 ... 67.7 % volume)
IPA (isopropanol determinations)
Measurements of isopropanol/water mixtures. Display of the results in one of the
following units: % weight (wt%) or % volume of isopropanol (vol%) at 20 °C.
Range of measurement: 0.0 ... 40.0 % weight (0.0 ... 47.4 % volume)
Salinity (salt concentration determinations)
Measurements of sodium chloride/water mixtures. Display of the results in one of
the following units: % weight NaCl (%NaCl), specific gravity (SG) or freezing
point (FP) of the solution (in °C or °F). Selection of the temperature unit for the
freezing point via Temp. Unit (see chapter 5.3).
Wine (determination of the sugar content in grape juice)
Display of the result in one of the following units: "titre alcoométrique" %vol
1990 (T.A(90)), Swiss °Oechsle (Oechsle), German °Oechsle (Oechsle
(D)), degrees "Klosterneuburger Mostwaage" (KMW(babo)) or degrees Baumé
(Baume).
Antifreeze
Measurements of ethylene glycol/water- and propylene glycol/water-mixtures.
Display of the results in one of the following units: % weight ethylene glycol or
propylene glycol (wt% EG, wt% PG), % volume ethylene glycol or propylene
glycol (v% EG, v% PG) at 20°C or freezing point (FP EG, FP PG) of the
mixture (in °C or °F). Selection of the temperature unit for the freezing point via
Temp. Unit (see chapter 5.3).
Range of measurement:
Ethylene glycol:
Propylene glycol:
Calculation of the temperature-compensation coefficient α
- Measure the refractive index ( n
• at a temperature ( T
• at a temperature ( T
- Calculate α according to the formula:
T T
n – n 2
1
D D
T – T
2 1
- Enter value α x 1000 into the instrument.
Note
The temperatures T
chapter 5.3).
METTLER TOLEDO Refracto 30PX/GS
0.0 ... 60.0 % weight (0.0 ... 58.2 % volume)
0.0 ... 55.0 % weight (0.0 ... 55.2 % volume)
) of the sample
D
) below the normal measuring temperature ( n
1
) above the normal measuring temperature ( n
2
and T have to be entered in the selected unit (°C or °F, see
1 2
Menu (menu)
T
1
)
D
T
2
)
D
9