Model: OP-201M Measuring Items: Smoke Opacity: %k [m-1] Optional Measurements: RPM, Oil Temperature (°C) Principle: Measurement Method: Light extinction method (Partial-flow sampling type) Light Source: Type: Equivalent to 570nm wavelength Optical Path Length & Inside Diameter: Optical Path Length: 76 mm Inside Diameter: 21 mm Range: Opacity: 0.0 - 100.0% (Equivalent to 0.00 - 21.42 m-1) Warm-up Time: Time: 3-6 minutes Display Time: Frequency: 4 times per second Power Supply: Input Voltage: 110V/220V ±10%, 50/60Hz Operating Temperature Range: Temperature: -10°C to +40°C Dimensions: Main Unit: 450 (W) x 200 (D) x 245 (H) mm (425 mm with optional accessories) Weight: Net Weight: Approximately 7 kg Gross Weight: Approximately 11 kg Optional Accessories: RPM Meter Oil Temperature Meter Handheld Terminal Built-in Printer Standard Filter PC Program Features: Accurate and reliable measurement of smoke opacity based on light extinction. User-friendly interface with quick 4-time-per-second display updates. Optional accessories for enhanced functionality (e.g., RPM, oil temperature measurement, and built-in printer). Robust build for industrial and automotive applications. Standard Accessories: Standard filter Power cable User manual Optional Accessories: Handheld terminal Built-in printer PC program for data analysis RPM meter Oil temperature meter This OP-201M Opacity Smoke Meter by KOENG is designed to measure smoke opacity efficiently and accurately in various industrial and automotive applications. Featuring a light extinction method and a compact, durable design, it provides reliable measurements with options for extended functionality.