Chillgard 5000 Sampling System - The Chillgard 5000 Refrigerant Leak Monitor provides the earliest detection of costly refrigerant gas leaks in mechanical equipment rooms. - The sampling system, with the patented photoacoustic infrared (PAIR) technology, detects even 1 ppm leakage. - The intuitive touch screen user interface facilitates operation. - Preventive maintenance and diagnostics ensure continuous operation.