EasyView Digital Light Meter Model EA30

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
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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
100s. 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.
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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
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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
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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
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EA30-EU-EN v3.3 08/13