The Agilent 563 Bayard-Alpert hot-cathode ionization gauge tubes employ a heated filament for the source of electrons. The gauge tube offers superior performance over a pressure range of 2 x 10-10 to 1 x 10-3 torr. The inside of the glass body is platinum-coated, shielding the gauge elements from electrostatic charge at low pressures while draining off the static charge that can build up at high pressure. A reference gauge tube is also available, sealed off at ≤ 5 x 10-6 torr for use in testing a gauge controller.
| Sensitivity |
| 10 (Torr)-1 (mbar)-1 (typical) |
| Exact measurement available through Agilent STARRS program. |
| Contact Agilent for details |
| Operating ratings |
| • 0 VDC (collector) |
| • + 180 VDC to ground (grid) |
| • + 30 VDC to ground |
| • 5 VAC nominal (filament) |
| X-Ray limit |
| 2 x 10-10 Torr, (2.6 x 10-10 mbar) |
| Operating pressure |
| 2 x 10-10 Torr to 1 x 10-3 Torr? |
| (2.7 x 10-10 mbar to 1 x 10-3 mbar) |
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