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Item number
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M688A
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M688M
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M688B
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M688D
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M688E
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M688C
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Product details page
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Details
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Details
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Details
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Details
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Details
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Details
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Dimensions, length / mm
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370Millimetre
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19Millimetre
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65Millimetre
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65Millimetre
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Dimensions, width / mm
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320Millimetre
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65Millimetre
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120Millimetre
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120Millimetre
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Dimensions, height / mm
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100Millimetre
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120Millimetre
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19Millimetre
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19Millimetre
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Weight
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200Kilogram
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0.2Kilogram
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0.5Kilogram
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0.265Kilogram
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0.2Kilogram
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0.4Kilogram
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USB interface
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x
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x
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x
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Display
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LCD, 50 x 25�mm
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3 1/2 -place LCD
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Viewfinder display with LCD, transmissive, backlit, 4-place digital measured value display, percentage relative to reference value
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Power supply
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Battery: 1.5�V alkaline manganese cell (IEC LR 6), PC operation: power supplied via the interface
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1.5 V mignon battery, type AA
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Power pack: 90 to 240�V (50 to 60�Hz) or via USB cable to PC
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Battery: 1.5�V alkaline manganese cell (IEC LR 6), PC operation: power supplied via the interface
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Battery: 1.5�V alkaline manganese cell (IEC LR 6), PC operation: power supplied via the interface
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Battery life (continuous operation - off)
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45Hour - 45Hour
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45Hour - 45Hour
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45Hour - 45Hour
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Measuring range selection
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0.01 to 199,900 lx and 0.1 to 1,999,000 cd/m² in 5 ranges (with luminance attachment)
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0.01 to 199,900 lx and 0.1 to 1,999,000 cd/m² in 5 ranges (with luminance attachment)
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0.1 to 199,900 lx and 1 to 1,999,000 cd/m² in 4 ranges (with luminance attachment)
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Indication of Lux/Foot candle
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x
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x
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x
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Autorange function
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x
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x
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x
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Illuminance monitoring area
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10 - 190000
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20 - 60
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10 - 190000
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Hold function and max function for display
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x
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x
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x
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Manual range function
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x
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x
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x
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Range hold function
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x
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x
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x
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Measuring rate
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2 measurements per second
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2 measurements per second
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2 measurements per second
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2 measurements per second
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Automatic shutdown
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Control element
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Measurement cable
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Protection class
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Probe dimensions (W x H x D)
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31 x 105 x 30mm
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Light receiver
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Illuminance measurement function
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x
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Operating temperature
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Storage temperature
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Measurement method
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Field of vision
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Measuring angle
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Optical system
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Depth of field
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Receiver
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Memory function MEM
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Entry of correction value CORR
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Luminance unit
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Miscellaneous
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