DH Instruments ADCS-601, Operation And Maintenance Manual

Page: 89 / 174

4. OPERATION
Page 77 © 2005 DH Instruments, Inc.
Table 16. ADCS System Display symbols
FEATURE DESCRIPTION
Vacuum Pump
Represents the reference vacuum pumping system.
-
White <V> on black backgound = vacuum pump is ON
and pulling a vacuum.
- Black <V> on white background = vacuum pump is OFF.
TEST(+) port
TEST(+) port on front of Reference Bench to which ADCS-601 sets
pressures and device under test is connected.
Changes to <MONITOR> when running an FPG Validation.
Pressure Controller
PG7601 and FPG8601’s pressure controllers. To view the
pressure measured by th econtroller’s internal transducer, see the
controller component’s front panel (in the Control Cabinet).
PG7601 Pressure
Standard
PG7601 gas operated piston gauge (see Section 2.2.1).
The PG7601 piston position is represented graphically and digitally
in the bell jar area and the mass rotation is represented in the AMH
vacuum chamber area.
- Bell jar light blue = ADCS-601 is in gauge measurement
mdoe; atmospheric pressure is under the bell jar.
-
Bell jar black = ADCS-601 is in absolute measurement
mode; vacuum is under the bell jar.
PG7601 masses
PG7601 masses. White vertical line movement approximates
mass rotation rate.
FPG8601 Pressure
Standard
FPG8601 force balanced piston gauge (see Section 2.2.2).
Automated Valve
Control valve.
- Vertical parallel lines = valve open
-
Horizontal parallel lines = valve closed
-
Black = valve not actuated/engergized
-
Red = valve actuated/enegized
Pressure tubing
Tubes making up measured pressure, reference pressure and
control pressure circuits.
-
Light blue = at atmospheric pressure, vented (valid for all
circuits).
- Dark blue = under control of active pressure standard
system (PG7601 or FPG8601).
- Black = under reference vacuum.
- Grey = Unknown status.