Watlow D4T Data Logger
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Chapter 5 Function Reference
Signals
Direction
Label
Type
Function
Receiver
- - - - Analog Signal to be scaled
Transmitter - - - - Analog Scaled signal with offset applied
Function
To scale the input values to up to ten specific values, set Function to
Stepped
.
Units
Set the units of the output value.
Options:
• Source
: the output has the same units as the signal connected to the top receiver.
• None
: the output is a pure number without units.
• Absolute Temperature
: the output is a temperature on the Celsius or Fahrenheit scale.
For example, 33° F as an absolute temperature is one degree above the freezing point
of water. An absolute temperature can be used as a set point or compared with other
temperatures to determine which is hotter or colder.
• Relative Temperature
: the output is a relative number of degrees, not an absolute
temperature. For example, the difference between the two measured temperatures,
120° C and 100° C is 20 degrees, but it is not the temperature 20° C. A relative tem-
perature is appropriate for use as a calibration offset or a deviation alarm set point.
• Power:
the output is a percentage with 100% representing full power and 0% represent-
ing no power.
• Process
: the output is in units of measure other than degrees Fahrenheit, degrees Cel-
sius or relative humidity.
• Relative Humidity
: the output is a measurement of percent relative humidity (%RH).
Input Point 1
Set the minimum input value to be scaled. Input values less than Input Point 2 are scaled to
Output Point 1.
Range: -99,999.000 to 99,999.000
Output Point 1
Set the value to which the input is scaled when the input is less than Input Point 2.
Range: -99,999.000 to 99,999.000
Input Point 2
Set the second lowest input value to be scaled. Input values equal to or greater than this, but
less than Input Point 3 are scaled to Output Point 2.
Range: -99,999.000 to 99,999.000
Output Point 2
Set the value to which the input is scaled when the input is greater than or equal to Input
Point 2 and less than Input Point 3.
Range: -99,999.000 to 99,999.000