Introduction: Detecting light across the detection area, single light path or dual light path (round trip) measurement system. The optical path system is composed of a transmitter and a receiver; the dual optical routing transmitting and receiving unit and the reflecting unit are composed. The transmitter is equipped with a high-intensity infrared light source (800-950nm), which emits a beam of light that passes through the optical lens and passes through the smoke in the detection area, and is projected onto the optical lens in the receiver to be focused onto the measurement detector; Directly focused on the reference detector. By calculating the ratio of the signal intensities obtained on the two detectors, the light transmittance or the light non-transmittance value can be obtained, thereby obtaining the light transmittance (T) or the light transmittance (OP) and the smoke. Gas concentration value (m). Features: 1. Direct continuous measurement Small size, light weight and compact structure 2. Direct display of light transmittance (T) or dimming coefficient (m) 3. With lens protection purge device 4. Automatic calibration and manual calibration, convenient and flexible 5. Measuring path 0.5-10 meters (depending on user test box size) 6. Long life imported light source 7. No moving parts - small maintenance Technical Parameters: Working principle: Crossing flue, single/double optical transmission method Light source: imported high brightness LED light source Source wavelength: 800nm-950nm (other wavelengths can be selected by the user) Response time: 3 seconds to reach the final value of 99.99% Measuring range: Light transmittance T: 0-99.99% Dimming factor: 0-40 dB/m Resolution: 0.01% Accuracy: ±2% Detectable gases: smoke, water mist, soot and related dust gases Optical path length: 0.3-2 meters Standard type (other lengths can be customized) Calibration and calibration: Manual calibration and calibration (with calibrator) Display: LCD liquid crystal display Analog output: 4-20mA current loop Digital output: RS485/232 Relay output: Two-way switch output (alarm value setting) Working temperature: -20 -50 °C Operating humidity: 0-99% (no condensation) Supply voltage: 220VAC; optional 12, 24VDC Vibration: 2Hz-60Hz, maximum amplitude 2mm Housing material: die-cast aluminum Protection level: IP67
HY-VIF207 smoke optical density detector is based on the national standard GB 4715-2005 Point Type Smoke Fire Detector.
