Gemini MxG5xx covers an inverted magnetron cold cathode gauge (MAG5xx) and a combination gauge that adds a Pirani (MPG5xx). It ionizes without a hot filament for long life and reads from high vacuum up to atmosphere in one unit.
| Measuring System | Cold cathode inverted magnetron (MAG5xx) / Pirani + cold cathode (MPG5xx) |
| Measuring Range | 1×10⁻⁹ … 1×10⁻² mbar (MAG5xx) / 1×10⁻⁹ … 1000 mbar (MPG5xx) |
| Accuracy (1×10⁻⁸…1×10⁻²mbar) | 30% of reading |
| Allowable Pressure (absolute) | 10 bar |
| Operating Temperature (in operation) | +5 … +55°C |
| Supply Voltage | +14.5 … +30 V (dc) |
| Power Consumption | ≤3 W |
| Interface (digital) | RS232C / RS485C |
| Protection Rating | IP40 |
| Accuracy (N₂, by range) | 1×10⁻⁸…1×10⁻² mbar 30% (MAG5xx/MPG5xx), 1×10⁻²…100 mbar 30% (MPG5xx), 100…1000 mbar 50% (MPG5xx) |
| Repeatability | 5% (1×10⁻⁸…100 mbar) |
| Flange Bakeout | +150°C (without electronics) |
| Storage Temperature | -40…+70°C |
| Filament Temperature | 120°C (MPG5xx only) |
| Ignition / Operating Voltage | Ignition ≤4.5 kV, operating ≤3.3 kV |
| Weight | MxG50x DN25 ISO-KF <280 g, DN40 ISO-KF <320 g, DN40 CF-F & CF-R <570 g; MxG55x ≤500 / ≤530 / ≤780 g |
| Analog Output | Type N 1 V/decade, type P 0.6 V/decade, type Q 1.33 V/decade |