The Inficon/Leybold Thermovac TM 22 is a dual-channel vacuum gauge controller engineered for precise measurement and threshold control across industrial and laboratory vacuum systems. It accepts multiple gauge types and gas compositions, delivering measurement uncertainty of ≤20% (10⁻³–10⁻² mbar) and ≤15% (10⁻²–10² mbar) with THERMOVAC sensors after warm-up. The unit offers selectable measurement units, independent switching thresholds with adjustable hysteresis, and dual relay outputs per channel for automated process control.
## Technical Specifications
• **Measurement Range:** 5×10⁻⁴ to 1000 mbar (3.75×10⁻⁴ to 750 Torr)
• **Measurement Units:** mbar, Torr, Pa, micron (user-selectable)
• **Channels:** 2 independent measurement channels
• **Display:** Seven-segment digital LCD
• **Measurement Uncertainty (THERMOVAC sensors):** ≤20% (10⁻³–10⁻² mbar); ≤15% (10⁻²–10² mbar)
• **Switching Thresholds:** 2 floating changeover contacts per channel; adjustment range 5×10⁻³ to 500 mbar (3.75×10⁻³ to 375 Torr)
• **Relay Hysteresis:** 10% standard, freely adjustable
• **Relay Contact Rating:** 5 A @ 240 VAC or 0.7 A @ 60 VDC (resistive); >6×10⁴ cycle life at 5 A
• **Ready Relay:** Contact closure on system ready status
• **Supported Gases:** Air, N₂, Ar
• **Power:** 100–230 VAC, 50/60 Hz; 9–14 VA consumption
## Key Features
• Analog chart recorder output: 0–10 V logarithmic (1.67 V/decade) selectable to linear across 3 decades; 0 V = 10⁻³ mbar, 10.5 V = fault
• RS232C serial interface for remote monitoring and control
• Compatible with THERMOVAC sensors (TR 211, TR 212, TR 216); 5 m standard cable, 100 m with automatic cable length compensation (specific models)
• Rackmount configuration supported
• Dimensions: 106.5 × 128.5 × 172 mm or 106.5 × 128.5 × 282 mm (variant-dependent); weight approximately 2 kg
## Compatibility & Integration
• Designed for THERMOVAC sensor family
• Compatible with Inficon VGC083A controllers
• Operates with Inficon and Leybold gauge systems
