Sv-5y opacimeter 1. Measurement range: non-transparence n: 0-99.9%; Ray absorption coefficient k: 0-16.06m-1; Petrol temperature: 0¦-150¦; Engine speed: 100-20000rpm; 2. Resolution: non-transparence n 0.1%; Ray absorption coefficient k 0.01m-1; Petrol temperature: 1%; Engine speed: 1rpm; 3. Indicated error: non-transparence n:+2.0%(absolute error); Petrol temperature:+ 2¦(absolute error); Engine speed:+ 30rpm (absolute error); 4. Power: ac220v+10% ; 50hz+1hz; 5. Weight: control unit: 5kg(include printer); Test unit: 7.5kg; 6. Effective optical path length: 215mm+0.1mm; 7. Preheat time: 15 minutes; 8. Method of sample taking: Smoke: taking directly, and the length of sample pipe is 2m. Petrol temperature: put the probe into the hole of lubricating oil gauge of engine, and the length of probing is the length of oil gauge. Then seal it with stopper in order to avoid the leakage of oil. The pipe length is 5m. Engine speed: speed folder will be fixed on the engine nozzle can be tightened 9. Display method: lcd large screen display 10. Optional configuration: gas temperature and engine speed; 11. Main functions: built-in printer, and computer network communications. Number plate input feature can be stored to 500 measurements, k-value exceeding alarm. Carton