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Catalog:Light Meters 
Cooke cal-LIGHT 400 and 400F Lightmeters Features Description cal-LIGHT, Model 400 - Ergonomically designed angled sensor allows simultaneous measurement and readout without interference from the operator. The silicon photodiode with photopic and cosine correction assures precise measurements. cal-LIGHT, Model 400F - The forward position of the light sensor which was designed specifically for use in museums and art galleries, allows the user to accurately measure the direct light falling down onto a painting or any other works of art. cal-LIGHT, Model 400L - Standard lightmeter with illuminated LCD for applications requiring measurements under 3 lux Display - Large, 10mm (3/8") LCD with units of measurement and low battery indicator offers comfortable reading during measurement. "ON" and "HOLD" button - Click to display reading. Hold to "freeze" display. Auto power off. Sliding Coverplate - Provides access to 9V battery and to the switch for selecting the measuring units (fc or lux). Calibration seal is affixed to every cal-LIGHT lightmeter after calibration to assure authenticity and prevent unauthorized alterations. Features NSN #6220-01-466-7572 NIST traceable calibration certificate Silicon photodiode sensor Autorange Auto power off User selectable units Ergonomic design Cosine correction Photopic correction Carrying case Built-in, hands free stand (cal-LIGHT 400 and 400L only) Ordering Information cal-LIGHT 400 or cal-LIGHT 400F, Calibrated Precision Lightmeters come complete with instructions, battery, carrying case, and calibration certificate. Calibration Calibrations and recalibrations are performed by COOKE and are traceable to NIST Standards. The spectral sensitivity of the calibrated detector matches the CIE standard observer curve for a standard tungsten source at 2856K. Specifications Specifications Measuring Range Autoranges 0.1 fc or lux to 40,000 fc or lux Units Choose fc or lux with user selectable switch located in battery compartment Accuracy a) Intensity linearity: 2% b) Photopic: Better than 1.0% of CIE curve c) Cosine error: Less than ±1.0% up to an incident angle of ±85° d) Overall accuracy ±5% of displayed value Calibration Calibrations and recalibrations are performed by COOKE and are traceable to NIST Standards. The photopic response of the calibrated sensor matches the CIE standard observer curve response to within 1% of the reading when using a standard tungsten source at 2856°K Light Sensor Silicon photodiode with photopic filter and cosine corrector Diameter 10 mm, angled 70° from display face (Model cal-LIGHT 400) Temperature Ranges Operation: 32° to 130°F (0° to 55°C) Storage: -4° to 160°F (-20° to 70°C) Users Architects Art Gallery and Museum Curators Engineers Interior Designers Health/Safety Professionals Lighting Designers Maintenance Personnel Facility Managers Landscape Architects Law Enforcement Agencies Developers Contractors All Lighting Specifiers Applications Accurately measures ambient illumination in: Offices Shopping Plazas Parking Lots Hospitals Stairways Highways Museums and Art Galleries Arenas Warehouses Stadiums Supermarkets Now available, the cal-LIGHT 400L with illuminated LCD display suitable for measurements in lux under 3 lux. cal-LIGHT 400L $390 Calibration Calibrations and recalibrations are performed by COOKE and are traceable to NIST Standards. The spectral sensitivity of the calibrated detector matches the CIE standard observer curve for a standard tungsten source at 2856K. Accessories Please Call Model Ordering Information cal-LIGHT 400, cal-LIGHT 400F and cal-LIGHT 400L Calibrated Precision Lightmeters come complete with instructions, battery, carrying case, and calibration certificate. FOB Auburn Hills, MI cal-LIGHT 400 $365 cal-LIGHT 400F $445 NSN #6220-01-466-7567 NSN #6220-01-466-7572 Please select from the drop down menu below
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