is a portable automobile exhaust gas analyzer that uses non-dispersive
infrared (NDIR) technology to determine CO, CO2
and HC concentration, while uses electrochemical sensors to detect
O2 and NOx concentration. VEA-501 also measures
the oil temperature and RPM, calculates LAMBDA of the engine.
VEA-501 features small size, easy operation, accurate readout,
reliable performance and minimum maintenance. It is an ideal choice
for garage, auto manufacturer and vehicle inspection station.