COMPASS
for molbox™ User’s Manual
© 1998-2003
DH Instruments, Inc
.
Page 74
Table 19.
DUT Definition Editor,
[Tolerance]
Tab Fields
FEATURE
DESCRIPTION
Tolerance Type
(required drop
down list
selection)
Selects the DUT tolerance formula used to calculate DUT error at test points.
Choices are:
•
%DUTFS:
DUT tolerance is calculated as the flow span of the DUT times the
tolerance value. Span and full scale errors are always the same when the DUT
<Min Flow>
value is zero.
•
%Reading:
DUT tolerance is calculated as the current reading of the DUT times the
tolerance value.
•
%DUTFS or %DUTreading (greater of):
DUT tolerance is calculated at each point
as both %DUTFS and %reading. The tolerance used is the greater of the two.
•
%DUTFS + %Rreading:
DUT tolerance is calculated at each point as both
%DUTFS and %Reading. Tolerance used is the sum of the two.
•
Flow Units:
DUT tolerance is specified as the
±
value of the fixed flow value
entered in the DUT flow range unit (from the DUT Definition
[Range]
tab).
•
Output Units:
DUT tolerance is specified as the
±
value of the fixed output value
entered in the DUT output range unit (from the DUT Definition
<Range>
tab).
•
Set Units:
DUT tolerance is specified as the
±
value of the fixed set point value
entered in the DUT set range unit (from the DUT Definition
[Range]
tab).
•
None:
There is no DUT tolerance specification.
See Section 19.4 for details on error calculations.
Tolerance Value
(required numeric
entry field)
Specifies the numeric value used to calculate the DUT tolerance. Combination tolerance
selections provide two entry fields.
8.5.6 [TEST]
TAB
The DUT Definition
[Test]
tab specifies information specific to testing the DUT. These include
the default Test Definition to use to test the DUT as well as the
<Calibration Gas>
and
<K factor>
, if applicable. The current
<Process Gas>
selection displays at the top of the
folder for reference purposes.
Table 20 provides information on each of the
[Test]
tab fields.
Figure 43.
DUT Definition Editor,
[Test]
Tab
Содержание COMPASS FOR MOLBOX
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