DH Instruments ADCS-601, Operation And Maintenance Manual

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ADCS-601™ OPERATION AND MAINTENANCE MANUAL
© 2005 DH Instruments, Inc. Page 4
1.1.4.2 1 TO 15 KPA, FPG8601 AND PPC3-100K
Resolution
1
Precision
2
Measurement uncertainty
3
Control set point increments
Stability of set pressure
Typical control set point time
0.01 Pa
± (2 ppm + 50 mPa)
± 0.008% of reading or 0.3 Pa (0.0001 inHg) ,
whichever is larger
1 Pa
± 1 Pa (0.0003 inHg)
60 to 180 seconds
1 Resolution: Minimum display increment.
2 Precision: Combined linearity, hysteresis, repeatability.
3 Measurement uncertainty: Maximum deviation of the indicated pressure from the true value of applied pressure
including all sources of uncertainty combined and expanded (k=2) following the ISO “Guide to the Expression of
Uncertainty in Measurement.” Note: The uncertainty assigned to the FPG8601 used in an ADCS-601 system is
expanded relative to the standard FPG8601 instrument. to allow validation by the PG7601 and an indefinite
recalibration interval. See Section 7.2.3 and DHI Technical Note 2090TN05.