Thankyou for post with regard to your scaling requirements using the PT-104 and PicoLog. PicoLog will allow you to scale each channel individually.
To start a new run from scratch, select New settings from the File menu. PicoLog will take you through the steps necessary to define what you want to collect:
To access this dialog, click the Options... button in the Measurement dialog for the
In parameter options select scaling
Scaling Method. There are three scaling methods: None, Table lookup, and
Equation. You can also read in a lookup table or an equation from a file.
Table lookup. This is useful for a set of input readings corresponding to different
values of the measurement to be scaled. You can put two or more pairs of values in
the box below. For example, to convert a 0 to 2.5 V input to –40 to 100 °C, enter
the following details in the box:
Two pairs are sufficient if there is a linear relationship between the raw and scaled values. For non-linear relationships, the required number of pairs depends on the maximum acceptable interpolation error. If you wish to enter more than half a dozen pairs of values, it is better to enter the table into a file, and then use file
scaling (see below).
Equation. This can be used when it is possible to calculate the relationship
between the input reading and the measurement value. The raw measurement
values is represented by x. For example, to convert a temperature from Fahrenheit
to Celsius, the equation would be:
(x-32)* 5 / 9
File. When you specify that you wish to use a file for scaling, this button is
enabled. When you click this button, the computer opens up a dialog to select a
You can scale each channel individually.
Hope this helps,