Granville-Phillips 350 Repair and Calibration
Also the 352 and the 358 Micro-Ion
Granville-Phillips no longer supports its older gauge controllers, such as the 350 and 358 Micro-Ion. We still repair and calibrate them, the 352 too.
- Another Granville-Phillips model: Vacuum Gauge Controller Repair.
Part numbers
350:
- 350001
- 350018
- 350507
- 350501-G-T1
- 350504-F-T1
- 350508-F-T1
352:
- 352001
- 352018
358 Micro-Ion:
- 358501-B00-T1
- 358501-B10-T1
- 358501-000-T1
- 358501-010-T1
Calibration only
Nothing broken, but calibration due? We calibrate the 350, 352 and 358 on their own, traceable to NIST: Calibration.
What usually goes wrong
- Readings that drift or jump
- No filament
- A blown fuse
- A bad display
- A damaged connector
- Power issues
At UHV, a controller that switches on but reads wrong is still broken.
We adjust every unit during testing, and calibrate the ones that need it.