Watlow D4T Data Logger
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Chapter 5 Function Reference
Range Low
Set the process value to be indicated when the electrical signal is equal to the Scale Low
setting. Scale Low and Range Low are the coordinates of a point on the line that relates the
electrical signal to the conditioned process value produced by this block.
Use to set the minimum value in process units.
Range: -99,999.000 to 99,999.000°F or units
-55,555 to 55,555°C
Range High
Set the process value to be indicated when the electrical signal is equal to the Scale High
setting. Scale High and Range High are the coordinates of a point on the line that relates the
electrical signal to the conditioned process value produced by this block.
Use to set the maximum value in process units.
Range: -99,999.000 to 99,999.000°F or units
-55,555 to 55,555°C
Process Error Enable
Set this parameter to enable low scale input error detection and response. Process inputs do
not have intrinsic open/short detection. To enable detection of process errors set this param-
eter to Low.
Options:
Off, Low
Process Error Low Value
When Process Error Enable is set to Low, set the minimum electrical signal level that is con-
sidered a good measurement. If the signal level to the hardware drops below this value, an
error will be triggered.
Range: -100.0 to 1000.0 VDC
-100.0 to 1000.0 mVDC
Display Precision
Set how many decimal places are displayed for the process value and associated parameters
such as set points.
Options:
Whole, Tenths, Hundredths, Thousandths
Calibration Offset
Set a value to add to the measured input value to compensate for sensor placement, lead
wire resistance or other factors that cause the input to vary from the actual process value.
Range: -99,999.000 to 99,999.000°F or units
-55,555 to 55,555°C
Filter
Set the amount of filtering to apply to the
input. Filtering smooths signal fluctuations.
Increase the time to increase filtering. Exces-
sive filtering slows the input’s response.
Range: 0.0 to 60.0 seconds