How To Span a Sensor with a Reference
Chapter Five: Operation in Leakage Mode
140
How To Span a Sensor with a Reference
This procedure stores a span constant for a spanned gauge. This makes the upper pressure
reading of the spanned gauge agree with the pressure reading of the referenced gauge. Spanning
is done with two sensors that are well within their measurement ranges.
Note
This procedure does not apply to capacitance manometers.
Spanning adjusts the slope of a gauge's
Pressure versus Actual Pressure (or other
measured parameter) line.
P
r
e
s
s
u
r
e
R
e
a
d
i
n
g
Reference Point
New slope
Original slope
Actual Pressure (or other measured parameter)
Figure 38: Spanning a Sensor with a Reference
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