à¤Ã×èͧÁ×ÍÇÔ·ÂÒÈÒʵÃì ÍØ»¡Ã³ìÇÔ·ÂÒÈÒʵÃì Light meter Lux Meters à¤Ã×èͧÇÑ´áʧ > Light / Lux Meter à¤Ã×èͧÇÑ´áʧ Light / Lux Meter 407026 Heavy Duty Light Meter with PC Interface Features: • Microprocessor assures maximum accuracy plus special functions • Fc Range: 200.0, 2000, 5000Fc Lux Range: 2000, 20,000, 50,000Lux • Basic accuracy of ±4% FS • Super large 1.4” (1999 count) LCD display • % displays differential from reference point • “ZERO” Re-Calibration • Utilizes precision photo diode and color correction filter • Cosine and color corrected measurements • ±4% accuracy is enhanced by selecting lighting type (Tungsten/Daylight, Fluorescent, Sodium, Mercury) • Record/Recall MIN, MAX and AVG readings • Data Hold plus Auto shut off • Built-in RS232 serial interface, optional software • Dimensions: 7 x 2.9 x 1.3” (178 x 74 x 33mm); Weight: 1.6lbs. (726g) • Complete with 9V battery and protective holster. Interface Options Optional Windows Data Acquisitioin Software and serial cable enable user to display and capture readings on a PC, and set time intervals and alarms Optional battery operated Datalogger module stores over 8000 readings for later trnasfer to a PC 407026 Extech Light meter Lux meter à¤Ã×èͧÇÑ´¤ÇÒÁà¢éÁáʧ à¤Ã×èͧÇÑ´áʧ