• Gossen Metrawatt
  • Gossen
  • Camille Bauer

Technical Features

Item number M688B M688D M688C
Product details page Details Details Details
Weight 0.5kg 0.265kg 0.4kg
Power supply Power pack: 90 to 240 V (50 to 60 Hz) or via USB cable to PC Battery: 1.5 V alkaline manganese cell (IEC LR 6), PC operation: power supplied via the interface
Illuminance monitoring area 20 - 60
Protection class II per VDE 0106, part 1
Dimensions, length / mm 65mm
Dimensions, width / mm 120mm
Dimensions, height / mm 19mm
Probe dimensions (W x H x D) 31 x 105 x 95 mm
Battery life (continuous operation - off) 45h - 45h
Measuring range selection 0.01 to 199,900 lx and 0.1 to 1,999,000 cd/m² in 5 ranges (with luminance attachment)
Measuring rate 2 measurements per second
Light receiver Silicon cell with V(?) filter
Operating temperature 0°C - 50°C
Storage temperature -20°C - 70°C
USB interface x
Display Viewfinder display with LCD, transmissive, backlit, 4-place digital measured value display, percentage relative to reference value
Measurement method Distance measurement
Field of vision 15° diagonal
Measuring angle
Optical system Scattered light error, ambient light (fs(u) > 2%)
Illuminance measurement function x
Depth of field 1 m to infinity, focusing via lens
Receiver Silicon photodiode
Memory function MEM x
Entry of correction value CORR x
Luminance unit cd/m2 or fL (selectable via DIP switches)
Miscellaneous tripod thread 1/4