DH Instruments ADCS-601, Руководство по эксплуатации и обслуживанию

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3. INSTALLATION
Page 53 © 2005 DH Instruments, Inc.
It is imperative that local gravity and test gas species be set correctly prior to ADCS-601
operation or out of tolerance measurement are likely.
Run manual FPG8601 internal calibration:
- Access the ADCS Tools FPG Run Screen (see Section 4.3.6.2).
- Press the FPG8601 internal calibration button. This button is identified by a wrench
icon.
-
When the results windows appears, press <Active the calibration> .
ADCS-601 is now ready to operate. See Section 3.4.6 to verify operation before regular use.
3.4.6 VERIFY SYSTEM OPERATION
Once the ADCS-601 is fully assembled and powered up (see Section 3.3), the following
steps may be used to verify operation:
Check gauge mode operation of the PG7601 and FPG8601 systems:
Plug the ADCS-601 TEST(+) port with the plug quick connector stem provided.
- Set operation to gauge mode in FPG Tools (see Section 4.2.3).
- Set a target pressure of 380 kPa (112 inHg) (see Section 4.2.4). The PG7601 should
automatically load mass, use the PG7601 PPC3 pressure controller to increase
pressure and float the PG7601 piston, rotate its piston and indicate
Ready . Once
Ready is indicated and about 30 seconds have been allowed for pressure stabilization,
the drop rate of the PG7601 should not exceed –0.2 mm/min. A faster drop rate value
than –0.2 mm/min indicates a possible leak.
- Set a target pressure of 20 kPa (6 inHg). The PG7601 should change the mass load,
use the PG7601 PPC3 pressure controller to decrease pressure and float its piston,
rotate its piston and indicate
Ready .
- Set a target pressure of 10 kPa (3 inHg). The ADCS-601 will transition from the
PG7601 to the FPG8601 standard. The FPG8601 pressure controller should descend
pressure and set a stable pressure near the target pressure value and indicate
Ready .
- Set a target pressure of 1 kPa (0.2 inHg). The FPG8601 pressure controller should
descend pressure and set a stable pressure near the target pressure and indicate Ready .
Check absolute mode operation.
- Set ADCS-601 operation to absolute mode (see Section 4.2.3). Wait for the mode
transition to complete. The reference vacuum value should descend to less than 1.5
Pa (11 mTorr) within 20 to 30 minutes.
- Set a target pressure of 80 kPa (24 inHg) (see Section 4.2.4). The PG7601 should
automatically load mass, use the PG7601 PPC3 pressure controller to decrease
pressure and float its piston, rotate its piston and indicate
Ready . Once Ready is
indicated and about 30 seconds have been allowed for pressure stabilization, the drop
rate of the PG7601 should not be positive. A positive value indicates a possible leak.
- Set a target pressure of 30 kPa (9 inHg). The PG7601 should automatically load mass,
use the PG7601 PPC3 pressure controller to decrease pressure and float its piston,
rotate its piston and indicate
Ready .