USE WITH A MULTISYSTEM MEASUREMENT
INSTRUMENT
HySense
®
CX 197
36
ENG
•
Viscosity at 40°C (
ν
40
)
•
Viscosity at 100°C (
ν
100
)
•
Density at 15°C
•
Pour point
•
Permittivity at 40°C (ε
40
)
Permittivity (dielectric constant):
The permittivity is an important parameter that describes the dielectric behavior
of the oil (that is, the
polarity
). If the value increases, this indicates a worsening
or a change in the oil property.
Since the permittivity depends on many properties such as the type and
quantity of additives, moisture content, etc., no precise specification for an oil
type can be made. However, particular oil types can be divided into
approximate ranges, as seen in Table 6.
Note
Parameters for “own oil”
The first four variables are common details in the oils’ data sheets.
For selection of the permittivity, a green help window is displayed as soon as you
put the cursor on the field, as depicted on the right in Figure 28. In it, the unit-free
value of the permittivity of a particular oil type is suggested. There is a precise
description in the next section.
Figure 28: Creating an oil with oil parameters: right: Help window for selection of the permittivity at 40°C