Specifications

9-182 | OWNER’S GUIDE
PART 3: Scale/CAL your channel (bottom-left quadrant)
In this section you enter whatever scaling your input needs.
- NOTE : If you are simply measuring voltage from a voltage module, you don’t
need to do any scaling (unless the voltage has been stepped down before being
input to the Dewetron system).
Let’s say that your transducer outputs 1V for 500 PSI. All you need to do is
enter these values into the “by two points” elds, as shown here:
In other words, when your sensor outputs 0V, this represents 0 PSI. But when it outputs 1V, that represents
500 PSI.
This simply establishes the slope of the scaling. In this case it is a linear function which multiplies the input
by 500 and changes the UM from V to PSI. You can click the [by function] button and see this algebraically:
This slope is the famous y = mx + b equation from high school. The scaling is created by a multiplier and
an offset. In our example, the offset is zero (none). But there are times when the offset is not zero. For
example, if you are scaling from Celcius to Fahrenheit. These two temperature measurement systems have
placed ZERO at different places: 0° C = 32° F. So to scale from C to F you would set it up like this:
or…