4. OPERATION
Page 57 © 2005 DH Instruments, Inc.
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4.1 GENERAL OPERATING PRINCIPLES
4.1.1 SYSTEM CONFIGURATION
The ADCS-601 system is completely configured from a hardware and software standpoint when
it is delivered. All necessary operating values are entered into individual components and all
interfaces are set for internal consistency and to communicate with ADCS Tools software.
The system hardware configuration can be viewed and edited using panels [Setup],
[Configuration] form. Changes to the configuration should only be made when necessary
by personnel with advanced knowledge of the system. Uninformed changes to the
configuration are likely to cause ADCS-601 to no longer operate properly.
4.1.2 READY/NOT READY INDICATIONS
4.1.2.1 OVERVIEW
Typcial ADCS-601 operation consists of using the system to set values of
pressure with very low measurement uncertainty. A variety of operations by the
ADCS-601 system may be required to achieve the requested pressure and the
time required to complete these may vary. In order to make it clear to the
operator when a pressure setting request has been completed and conditions
are appropriate for the ADCS-601 pressure definition to be within the estimated
measurement uncertainty budget, ADCS-601 provides a “go/no go” Ready/Not
Ready indication.
The Ready/Not Ready indication is provided by the ADCS Tools software that
manages the overall system (see Section
4.3). The indication is by a circle to the
left of
the current pressure reading which is RED when the pressure is Not
Ready and Green when the pressure is Ready.
The conditions that must be met to reach a Ready condition vary depending upon
whether the active pressure standard is the PG7601 piston gauge or the FPG8601
force balanced piston gauge. See Sections
4.1.2.2 and 4.1.2.3 for additional
information on the Ready/Not Ready criteria for the two pressure standards.
4.1.2.2 READY/NOT READY WHEN USING THE PG7601 PISTON
GAUGE
ADCS-601 uses the Ready/Not Ready directly from the PG7601 to determine
the Ready/Not Ready condition. See the PG7000 Operation and
Maintenance manual for a more detailed description of PG7000 Ready/Not
Ready operation.
When the PG7601 is the active pressure standard ADCS-601 pressure Ready/Not
Ready depends directly upon the PG7601 Ready/Not Ready condition.
The PG7601 Ready/Not Ready condition is dependent upon three criteria. For
the PG7601 pressure to be considered Ready, all three crteria must be met.
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