Extech HD450 Datalogging Heavy Duty Light Meter with NIST

Item #:

EXT-HD450-NIST

Brand:

Extech

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HD450 Datalogging Heavy Duty Light Meter with NIST by Extech

HD450 Datalogger model automatically stores up to 16,000 readings or manually store/recall up to 99 readings
Wide range to 40,000Fc or 400,000 Lux
Cosine and color corrected measurements
Utilizes precision silicon photo diode and spectral response filter
Peak mode (10mS) captures highest reading
Relative mode indicates change in light levels
Min/Max and Data Hold
Large backlit LCD display with 40-segment bar graph
Heavy Duty rugged double molded housing
Built-in USB port
Includes light sensor with 3ft (1m) cable and protective cover, Windows® compatible software with USB cable, hard carrying case, and 9V battery

General Specifications

Display	4000 count LCD display with 40 segment bargraph
Ranging	Four ranges, manual selection
Over range indication	LCD displays 'OL'
Spectral response	CIE photopic (CIE human eye response curve)
Spectral accuracy	Vλ function (f’1 ≤6%)
Cosine response	f’2 ≤2%; Cosine corrected for angular incidence of light
Measurement Repeatability	±3%
Display rate	Approximately 750 msec for digital and bargraph displays
Photo detector	Silicon photo-diode with spectral response filter
Operating conditions	Temperature: 0 to 40°C (32 to 104°F); Humidity: < 80%RH
Storage conditions	Temperature: (-10 to 50°C (14 to 140°F); Humidity: < 80%RH
Meter Dimensions	170 x 80 x 40mm (6.7 x 3.2 x 1.6")
Detector Dimensions	115 x 60 x 20mm (4.5 x 2.4 x 0.8")
Weight	Approx. 390g (13.8 oz.) with battery
Sensor lead length	1m (3.2')
Low battery indication	Battery symbol appears on the LCD
Power supply	9V battery
Battery Life	100hrs (backlight off)

Range Specifications