BAG05x are passive Bayard-Alpert hot cathode gauge heads used with the VGC083 controller. They come as nude types (BAG050, BAG051) and glass tube types (BAG052, BAG053) and measure from low to ultra-high vacuum.
| Measuring System | hot cathode ionisation, Bayard-Alpert |
| Measuring Range (BAG050) | 2.7×10⁻¹¹ … 1.3×10⁻³ mbar |
| X-Ray Limit (BAG050) | 2×10⁻¹¹ Torr |
| Bakeout | 450°C |
| Measuring Range (BAG051/052/053) | 5.3×10⁻¹⁰ … 1.3×10⁻³ mbar |
| X-Ray Limit (BAG051/052/053) | 4×10⁻¹⁰ Torr |
| Accuracy (BAG051/052/053) | ±20% (N₂) |
| Repeatability (BAG051/052/053) | ±5% |
| Sensitivity | BAG050 25 Torr⁻¹, BAG051 to 053 10 Torr⁻¹ |