Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 43
Setting Oil Coefficients Using Serial Line
If the ppm conversion and oil-specific coefficients have been
programmed at Vaisala, you do not have to set the conversion co-
efficients.
If you have defined the coefficients or separately received from Vaisala
the oil-specific coefficients A and B, related to your own oil type, the
coefficients can be set to the software of MMT162 by using serial line.
OIL
Use the serial line command
OIL
to display oil-specific parameters for
ppm conversion. With
OILI
command you can set new oil parameters.
Example
:
oil
Oil[0] : -1.6603
Oil[1] : 7.3600
Oil[2] : 0.0000
where
Oil [0]
corresponds to parameter A
Oil [1]
corresponds to parameter B
Oil [2]
Corresponds to parameter C
Determination of Oil-Specific
Coefficients
The equation of the ppm calculation is:
ppm = aw*10
(B+A/T)
With the following procedure the coefficients A and B can be defined for
the equation:
LOG(PPM
sat
)= B + A/T
