Partial flow opacity meter for diesel engine emissions testing on cars and light trucks and heavy-duty commercial vehicles OPAX 2000 - II complies with most important standards worldwide like EEC 72/306, ISO 3173, ISO 11614 and SAE J 1667; it is approved for statutory test in many countries around the world Approved for use in California, and Illinois Partial flow continuous gas sampling combined with a heated and temperature controlled smoke chamber compensates for changes in pressure and test conditions to give you the most accurate readings possible All-in-one architecture with long sampling hose makes it comfortable and easy to use on any vehicle with any kind of diesel exhaust system including vertical stacks. Dual function power supply supports roadside and repair bay operations Real-time clock with battery back up. Software-supported calibration feature with standard filter. Measures gas pressure and gas temperature Built in 24-column printer Dimensions: 16.7" x 8.9" x 14.6" approximately Weight: 44 lbs. approximately