INSTRUCTION MANUAL Models 401020 (Lux) and 401021 (Fc) Light Meter Adapters 1 Model 401020 and 401021-EN v2.0 8/13 1. INTRODUCTION Thank you for selecting the Extech Light Meter Adapter with selectable range and Lux/Foot candle operation. This professional device, with proper care, will provide years of safe reliable service. 2. FEATURES Connects to standard DMM for displaying readings Measures Tungsten, Fluorescent, Sodium, Mercury, and Daylight Selectable range and unit of measure Status LED for Power and Low Battery Battery operated 2. SPECIFICATIONS 2.1 Electrical Specifications Accuracy ± (5% + 1mV) Sensor Exclusive photo diode & color correction filter spectrum designed to meet C. I. E. o o o Operating Temperature/humidity 32 F to 122 F (0C to 50 C) / <90% RH Power Supply 006P DC 9V battery Power Consumption Approx. 6 mA DC Low battery indication Status LED on Front panel of Adaptor Dimensions / Weight 3.9 x 1.9 x 1" (100 x 50 x 25mm) / 0.33 lbs. (150g) 2.2 Range Specifications 401020 Range Measurement 401021 Output to DMM Measurement Output to DMM 1 0 to 2000 Lux 0 to 200 Fc 1mV per 1 Fc 2 2000 to 20,000 Lux 0.1mV per 10 Lux 200 to 2000 Fc 0.1mV per 1 Fc 3 20k to 50k Lux 2000 to 5000 Fc 0.1mV per 10 Fc 0.1mV per 1 Lux 0.1 mV per 100 Lux 2 Model 401020 and 401021-EN v2.0 8/13 2.3 Frequency Spectrum 3. DESCRIPTION 1 Power ON status LED 2 Low battery status LED 3 Power ON / Range select switch 4 Light sensor 5 Meter to sensor connect cable 6 DMM banana connector plugs 3 Model 401020 and 401021-EN v2.0 8/13 4. OPERATION 4.1 Insure that a fresh battery is installed by moving the Power/Range Select switch from the OFF position to one of the range select positions; if the Power ON light does not switch ON or if the Low Battery LED does switch ON, please check the battery. 4.2 Connect the adapter banana plugs to the COMMON and VOLTAGE inputs of a multimeter. The polarity of the connection should be reversed if a negative light level reading is indicated on the multimeter. 4.3 Set the multimeter to the mV (or higher) DC voltage position. Adjust the range to suit the display needs of the application. If the option is available do not use the multimeter auto‐range function. 4.4 Select the maximum range on the adapter using the Range Select Switch and then move lower in range as needed. 4.5 Hold the Light Sensor so that it faces (in a perpendicular orientation) the light source to be measured. The multimeter display will indicate the light level readings. Refer to Sections 5 and 6 for additional measurement considerations. 5. CORRECTION FACTOR FOR VARIOUS LIGHTING TYPES The light adapter is calibrated using a precise standard tungsten light source of 2856oK. If the adapter is to measure a different type of lighting, the correction factor shown in the accompanying table should be applied to the readings. Multiply the multimeter reading by the factor listed in the right column of the table for the lighting type shown in the left column. Lighting Type Multiplication Factor MERCURY LAMP x1.14 FLUORESCENT LAMP x1.08 DAYLIGHT x1.00 SODIUM x1.22 METAL HALIDE x1.00 4 Model 401020 and 401021-EN v2.0 8/13 6. RANGE SELECTION The meter has three measurement ranges (0‐200, 0‐2000, and 0‐5000 Fc) or (0‐2000, 0‐20000, and 0‐50000) Lux). The proper range selection will produce the most accurate reading. Always select the range that produces the maximum number of digits without exceeding the maximum count for that particular range. For example, a reading of 1456 Fc should be read on the 0 ‐ 2000 range, not the 0‐5000 range. 7. BATTERY REPLACEMENT When the Low Battery status LED switches ON, replace the battery as soon as possible. Open the Battery Compartment by removing the rear screw. Remove the battery, replace it with a fresh 9V battery, and then re‐assemble the meter. 8. CALIBRATION / REPAIR SERVICES FLIR Systems, Inc. offers repair and calibration services for the Extech Instruments products we sell. NIST certification for most products is also provided. Call the Customer Service Department for information on calibration services available for this product. Annual calibrations should be performed to verify meter performance and accuracy. Technical support and general customer service is also provided, refer to the contact information provided below. 9. WARRANTY and SUPPORT FLIR Systems, Inc. warrants this Extech Instruments brand device to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department for authorization. Visit the website www.extech.com for contact information. A Return Authorization (RA) number must be issued before any product is returned. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. FLIR Systems, Inc. specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or consequential damages. FLIR’s total liability is limited to repair or replacement of the product. The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or implied. Support Lines: U.S. (877) 439‐8324; International: +1 (603) 324‐7800 Technical Support: Option 3; E‐mail: [email protected] Repair & Returns: Option 4; E‐mail: [email protected] Product specifications are subject to change without notice Please visit our website for the most up‐to‐date information www.extech.com FLIR Commercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA ISO 9001 Certified 5 Model 401020 and 401021-EN v2.0 8/13 10. Appendix 1 ‐ Typical Light Levels Lux Foot Candles 20-75 75-150 150-300 300-750 750-1,500 1,500-3,000 2-7 7-15 15-30 30-75 75-150 150-300 75-100 100-200 200-750 7-10 10-20 20-75 Factories Emergency Stairs, Warehouse Exit/Entrance Passages Packing Work Visual Work: Production Line Typesetting: Inspection Work Electronic Assembly, Drafting Office Indoor Emergency Stairs Corridor Stairs Conference, Reception Room 750-1,500 75-150 Clerical Work 1,500-2,000 150-2000 Typing, Drafting Store 75-150 7-15 Indoors 150-200 15-20 Corridor/Stairs 200-300 20-30 Reception 300-500 30-50 Display Stand 500-750 50-75 Elevator 750-1,500 75-150 Show Window, Packing Table 1,500-3,000 150-300 Storefront, Show Window Lux Foot Candles 100-150 150-200 200-300 300-500 500-1,500 1,000-2,000 10-15 15-20 20-30 30-50 50-150 100-200 75-150 150-300 300-750 7-15 15-30 30-75 750-1,500 75-150 30-75 3-7 75-100 7-10 100-150 10-15 150-200 15-20 200-750 20-75 750-1,500 75-150 5,000-10,000 500-1000 Home Washing Recreational Activities Drawing Room, Table Makeup Reading, Study Sewing Restaurant Corridor Stairs Entrance, Wash Room Cooking Room, Dining Table Show Window Hospital Emergency Stairs Stairs Sick Room, Warehouse Waiting Room Medical Exam Room Operating Room Eye Inspection 11. Appendix 2 ‐ Common Conversion Factors 1 lm/m2 = 1 lux (lx) 10-4 lm/cm2 10-4 phot (ph) Illuminance (Visible Flux Density) 9.290 x 10-2 lm/ft2 9.290 x 10-2 foot-candles Luminance (Visible Flux Density per Solid Angle) Luminous Intensity (Visible Flux per Solid Angle) Luminous Flux ( Visible Flux) 1 lm/m2/sr = 1 candela/m2 1 lm/sr = 1 candella 1 lumen (lm) = 1.464 x 10-3 watts @ 555 nm Copyright © 2013 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form www.extech.com 6 Model 401020 and 401021-EN v2.0 8/13