à¤Ã×èͧÁ×ÍÇÔ·ÂÒÈÒʵÃì ÍØ»¡Ã³ìÇÔ·ÂÒÈÒʵÃì Light meter Lux Meters > TM-204 Lux meter Light meter à¤Ã×èͧÇÑ´áʧ Light meter Lux Meter TM-204 ... Light Meter DISPLAY - 3½ digits LCD with maximum reading 2000. - Overload indication. - Low battery indication. FUNCTIONS - According to JISC1609:1993 and CNS 5119 general A class specifications. - Spectral response close to CIE luminous spectral efficiency. - Measuring intensities of illumination in unit of Lux or Foot-candle. - Measuring lights source include all visible range. - Cosine angular corrected. Model TM-203 TM-204 TM-205 Data hold V V V Max/ Min /AVG hold V V Max hold V Zero adjustment V V V Auto ranging V V Auto power off V V Datalogger V Sensor Silicon photodiode and filter Measuring range 20(TM-203/205),200, 2000, 20000, 200000 Lux 20,200, 2000, 20000 Foot-candle Accuracy +/- 3% (Calibrated to standard incandescent lamp 2856º K) +/-8% (other visible light source TM-204) +/- 6%(other visible light source TM-203/205) Angle deviation from cosine characteristics 30º +/- 2% 60º +/- 6% 80º +/-25% DIMENSION Meter size (LxWxH) 172x55x38mm Weight (including battery) 250g APPLICATIONS: warehouses, factories, office buildings, restaurants, schools, library, hospitals, photographic,video, parking garages, museums, art galleries, stadiums, building security. Light meter Lux meter TENMARS TM-204 à¤Ã×èͧÇÑ´¤ÇÒÁà¢éÁáʧ à¤Ã×èͧÇÑ´áʧ