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last_updated: "2026-10-14T13:00:51.160-05:00"
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# MKS Instruments / Granville-Phillips 352021 Main Assembly

_Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._

## Summary

- Manufacturer: Granville-Phillips
- Model: 352021
- Condition: Used and in Excellent Condition
- Price: $195.00 USD
- Availability: In stock, 3 available
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 2.5 lb, estimated
- Shipping dimensions: 8X8X3 in, estimated

## Categories

- Lab & Analytical > Controllers (primary)

## Details

Part Numbers: 012791-104, 20036379-001, 20002389-A

## Function

Electronic main assembly for a vacuum gauge system; provides filament power and high-voltage bias to an ionization/Bayard–Alpert gauge, conditions and digitizes ion current to generate calibrated pressure readings, and offers control interfaces, alarms, and remote/local operation with range selection and fault monitoring.

## Images

- <https://www.artisantg.com/itemimages/mks_instruments_granville_phillips_352021_view1_2026716154150.jpg>
- <https://www.artisantg.com/itemimages/mks_instruments_granville_phillips_352021_view2_2026716154150.jpg>
- <https://www.artisantg.com/itemimages/mks_instruments_granville_phillips_352021_view3_2026716154150.jpg>
- <https://www.artisantg.com/itemimages/mks_instruments_granville_phillips_352021_view4_2026716154150.jpg>
