Apex Emission Equipment - Gas Analyser- Eco Gas 100 - Manatec / India Eco Gas 100 DESCRIPTION Conforms to ISO 3930. NDIR technology. Engine RPM measurement facility. 7 Segment LED display. Automatic condensate discharge. Automatic zero calibration. Digital span calibration. RS232C serial port for PC interface. NOx measurement. Engine oil temperature measurement. Portable light weight design. DC operation suitable for “Road tests” using vehicle battery. Display of Lambda / AFR / PEF. Petrol / CNG / LPG selection.