User Guide EasyView Digital Light Meter Model EA30 Introduction Thank you for selecting the Extech EasyView Digital Light Meter which measures light level (luminance). This device measures up to 40,000 Fc and 400,000 Lux. This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Please visit the Extech Instruments website (www.extech.com) to check for the latest version of this User Guide. Extech Instruments is an ISO-9001 certified company. Meter Description 1. LCD display 2. Range button 3. Power ON/OFF button 4. Peak hold button 5. Lux select button 6. Photo sensor (lens cover not shown) 7. Sensor input to top of meter 3 4 8 9 8. Data HOLD button 5 10 9. MAX/MIN button 7 1 2 6 10. fc foot candle select button 11 11. RELATIVE function button Note: Battery compartment is located on the rear of the instrument 2 EA30-EU-EN v3.3 08/13 Operation Turn Power ON or OFF 1. Press the button to turn power on or off. The meter will perform a short self-test when turned on. Light sensor 1. The light sensor is permanently attached to the meter. A coiled cable attaches the sensor to the meter. 2. The white domed light sensor lens is a photo diode and resides underneath the protective cap. 3. The meter automatically zeroes, therefore a zero calibration is not necessary. 4. The back of the sensor has a tripod mounting hole. Taking light measurements 1. Remove the protective cap from the sensor and face the white domed light sensor toward the source of light to be monitored. For overhead lighting, the sensor can be placed on a desk or table top. 2. The light being measured must encompass the entire white sensor dome. 3. Read the light level on the LCD. If the light measurement is out of range an “OL” indication will appear on the display. If the ‘OL’ appears, select another range by pressing the RANGE button. Selecting Lux or Foot candle units of measure Press the LUX button to select lux units and the fc button to select foot candle units. MX MN Function (stores/recalls highest MX and lowest MN readings) Press the MX/MN button once to put the meter in MX mode. The meter will now display only the highest reading (MX is displayed on the upper left-hand portion of the LCD). Press MX/MN again to put the meter in MN mode where the meter displays only the lowest reading (MN icon is displayed). Press MX/MN again to have the meter continue to record the highest and lowest readings but display only the current reading (both MX and MN icons appear flashing), then use the MX/MN button to scroll through the highest and lowest readings. To exit the MX MN mode, press and hold the MX/MN button until the MX and MN icons completely disappear. Data Hold Press the HOLD button to freeze the displayed reading. The 'H' hold icon will appear on the upper right-hand side of the display. Press the HOLD button again to return to normal operation (the 'H' hold icon will disappear). When hold function is enabled the analog bar graph will continue to display level changes. Peak Hold The Peak Hold feature allows the meter to captures light level changes that occur in as little time as 100s. Press the PEAK button momentarily and the ‘P+’ icon will appear on the LCD. The meter can now measure a fast acting light peak and display it on the LCD. To exit the Peak Hold mode, press the PEAK button. Relative mode Measurements can be displayed as a difference between actual light level and a stored reference value. To store a reading as a reference, press the REL button when the desired reference measurement is on the LCD (the triangle icon will appear steady in the upper left-hand corner of the LCD). All subsequent displayed readings will be “relative” to the stored reference value. For example, if the reference value is 100 and the actual light level is 125, the meter will display 25. To view the reference value, press the REL button again so that the triangle icon begins to flash. The displayed value will be the reference value. To exit the Relative mode, press and hold the REL button until the triangle icon disappears. 3 EA30-EU-EN v3.3 08/13 Maintenance Cleaning and storage 1. The white plastic sensor dome should be cleaned with a damp cloth when necessary. 2. Store the meter in an area with moderate temperature and humidity (refer to the operating and storage range in the specifications chart earlier in this manual). Battery Replacement When the battery power falls low, the ‘BT’ symbol will appear on the lower left-hand side of the LCD. Replace the six (6) 1.5 ‘AAA’ batteries by removing the rear (center) battery compartment screw and accessing the battery compartment. Observe polarity when placing the batteries in the compartment. Ensure that the compartment cover is securely fastened when finished. You, as the end user, are legally bound (EU Battery ordinance) to return all used batteries, disposal in the household garbage is prohibited! You can hand over your used batteries / accumulators at collection points in your community or wherever batteries / accumulators are sold! Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle Specifications Ranges Lux 40.00, 400.0 4000 40.00k, 400.0kLux Foot candles 40.00 400 4000, 40.00kfc Display Over range indication Spectral response Spectral accuracy Measure Repeatability Temperature coefficient Sampling rate Photo detector Peak hold Operating conditions Storage conditions Dimensions Weight Low battery indication Power supply Resolution Accuracy 0.01 0.1 1 0.01 0.1 ± (3% Reading + 0.5% Full Scale) if > 10,000 lux ±( 4% Reading + 0.5%Full Scale) 0.01 ± (3% Reading + 0.5% Full Scale) 0.1 1 if > 1,000 fc 0.01 ±( 4% Reading + 0.5%Full Scale) Multi-function 3-3/4 (3999) digit LCD with Bargraph indicator LCD displays ‘OL’ CIE photopic (CIE human eye response curve) CIE V function (f1 6%) ±2% o ±0.1% per C 13.3 times per second (Bargraph); 1.3 times per second (digital display) Silicon photo-diode with spectral response filter Capture light peaks to 100uS o o Temperature: 0 to 40 C (32 to 104 F); Humidity: < 80% RH o o Temperature: -10 to 50 C (14 to 140 F); Humidity: < 80% RH 150 x 72 x 33mm (5.91 x 2.8 x 1.4") Approx. 320g (11.3 oz.) with battery “BT” appears on the LCD 6 ‘AAA’ cells; Battery life approx 400 hours 4 EA30-EU-EN v3.3 08/13 Appendix Typical Light Levels Lux Foot Candles Lux Foot Candles 20-75 75-150 2-7 7-15 Factories Emergency Stairs, Warehouse Exit/Entrance Passages 100-150 150-200 10-15 15-20 150-300 15-30 Packing Work 200-300 20-30 300-750 750-1,500 1,500-3,000 30-75 75-150 150-300 300-500 500-1,500 1,000-2,000 30-50 50-150 100-200 75-100 100-200 7-10 10-20 75-150 150-300 7-15 15-30 200-750 20-75 300-750 30-75 750-1,500 75-150 30-75 75-100 100-150 3-7 7-10 10-15 150-200 200-750 15-20 20-75 750-1,500 75-150 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 300-500 500-750 30-50 50-75 Display Stand Elevator 750-1,500 75-150 1,500-3,000 150-300 Show Window, Packing Table Storefront, Show Window 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 5,000-10,000 500-1000 Eye Inspection 5 EA30-EU-EN v3.3 08/13 Spectral Sensitivity R e l a t i v e R e s p o n s e 1 0.8 0.6 0.4 0.2 0 400 450 500 550 600 650 700 Wavelength (nm) _____ - - - - - Light Meter Response CIE Response 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 EA30-EU-EN v3.3 08/13