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The Lightmeter Models CA811 and CA813 are portable,
easy-to-use instruments which feature
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optical sensors
that are designed to match the response of the human eye, making them ideal
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instruments for workspace analysis and planning. The ergonomically
designed case, large display
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and intuitive function selection make these instruments the
right choice for any application.
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The Lightmeter Models CA811 and
CA813 are designed for simple one-hand operation. They provide
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selectable lux or footcandle units for display and feature a 3½ digit backlit LCD digital display and
a
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HOLD function. The Model CA811 offers a MAX function, while
the Model CA813 offers a PEAK
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function and a broader
light response.
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Features
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 Easy one-hand
operation
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Designed to measure
a wide range of lighting types
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Removable sensor for
remote reading
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Measures in footcandles (fc) or lux
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Cosine corrected
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HOLD function
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PEAK function (Model CA813)
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MAX function (Model
CA811)
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CIE photoptic (human eye) response
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2000-count backlit
LCD
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Lightweight and
compact
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Removable
protective sensor cover
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Includes rugged, shockproof,
protective, dirt resistant holster
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Applications
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Testing for OSHA compliance in
workplace, cleanroom and industrial settings
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Ambient testing for
light-sensitive displays and archives in museums and art galleries
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Specifications
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MODEL
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CA811
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CA813*
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MEASUREMENTS
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Range
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20fc, 200fc, 2000fc, 20kgc
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20fc, 200fc, 2000fc, 20kgc
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20lux, 200lux, 2000lux, 20klux
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20lux, 200lux, 2000lux,
20klux, 200klux
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Display Resolution
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0.01fc or 0.01lux
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0.01fc or 0.01lux
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Sensor
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Silicon photodiode
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Silicon photodiode
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Spectral Response
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CIE Photopic Curve
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CIE Photopic Curve
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Accuracy
for 2966K Light Source
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+/-3%+/-10cfs
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+/-3%+/-10cfs
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Accuracy for Common Light Sources
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+/-18%+/-2cfs
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+/-11%+/-2cfs
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Display
Refresh Rate
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2.5 times per second, nominal
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MECHANICAL
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Display
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3½ digit liquid crystal display (LCD),
2000-count
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Operating
Temperature
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32๐ to 122๐F (0๐ to 50๐C),
<80% RH
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Storage Temperature
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-4๐ to 140๐F
(-20๐ to 60๐C),
0 to 90% RH without battery
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Polarity
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Automatic
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Power Source
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9V Alkaline battery
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Dimensions
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6.81 x 2.39 x 1.5” (173 x
60.5 x 38 mm)
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Weight
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Approx. 7.55 oz
(214 g)
Including battery
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Approx. 7.9 oz (224
g)
Including battery
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*Note: Model CA813 offers higher sensitivity (200klux)
and has a better spectral response to common light sources.
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