Watlow D4T Data Logger
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Chapter 5 Function Reference
Scale High
Set the value of input X at which the Range High setting is the desired result of scaling. Scale
High and Range High are the coordinates of a point on the line that relates input X to the
scaled output.
Range: -99,999.000 to 99,999.000
Units
Set the source units.
Options:
• Source
: when SW is on, the output has the same units as input X. When SW is off, the
output has the same units as input B.
• None
: the output value is a pure number without units
• Absolute Temperature
: the output value is a temperature value on the Celsius or Fahr-
enheit 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 com-
pared with other temperatures to determine which is hotter or colder.
• Relative Temperature
: the output is a value is a relative number of degrees, not an ab-
solute temperature. For example, the difference between the two measured tempera-
tures, 120° C and 100° C is 20 degrees, but it is not the temperature 20° C. A rela-
tive temperature is appropriate for use as a calibration offset or a deviation alarm set
point.
• Power
: the output value is a percentage signal where 100% represents full power and
0% represents 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 in percent relative humidity (%RH).
Range Low
Set the desired result of scaling at the point where input X equals the Scale Low setting.
Scale Low and Range Low are the coordinates of a point on the line that relates input X to
the scaled output.
Range: -99,999.000 to 99,999.000
Range High
Set the desired result of scaling at the point where input X equals the Scale High setting.
Scale High and Range High are the coordinates of a point on the line that relates input X to
the scaled output.
Range: -99,999.000 to 99,999.000
Offset
Adjustment added to the result of the calculation.
Range: -99,999.000 to 99,999.000