Extech EA33 Operating Manual
User's Guide
EasyView Light Meter with Memory
Model EA33
Introduction
Congratulations on your purchase of the Extech EA33 EasyView Light Meter which
measures light level (illuminance). This device measures up to 99,990 Fc and 999,990
Lux and stores up to 50 readings for easy recall. Careful use of this meter will provide
years of reliable service.
Warranty
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in
parts and workmanship for one year from date of shipment (a six month limited warranty
applies on 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 at
(781) 890-7440 ext. 210 for authorization or visit our website at www.extech.com for contact
information. A Return Authorization (RA) number must be issued before any product is
returned to Extech. 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. Extech
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.
Extech'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.
Specifications
Units Ranges and Resolution Accuracy
Lux
Foot candles
Note: Calibrated to a standard incandescent lamp at color temperature of 2856K
Display Multi-function LCD with a maximum display of 999900
Ranging Autoranging over five ranges
Over range indication LCD displays ‘OL’
Spectral response CIE photopic (CIE human eye response curve)
Spectral accuracy Vλ function (f’
Cosine response f’2 ≤2%; Cosine corrected for angular incidence of light
Measurement Repeatability ±2%
Temperature coefficient ±0.1% per
Sampling rate 5 times per second
Photo detector Silicon photo-diode with spectral response filter
Operating conditions Temperature: 32 to 104
Storage conditions Temperature: 14 to 140
Meter Dimensions 5.91 x 2.8 x 1.4" (150 x 72 x 35mm)
Detector Dimensions 3.6 x 2.4 x 1.5” (92 x 60 x 29mm)
Weight Approx. 11.3 oz. (320g) with battery
Sensor lead length 5’ (150cm)
Low battery indication Battery symbol appears on the LCD
Power supply Six (6) ‘AAA’ cells
Battery life 200 hours (approx.)
99.99, 999.9, 9999 ± (3% rdg + 0.5%FS)
99990 ± (3% rdg + 5 digits)
999900 ± (3% rdg + 0.5%FS)
9.999, 99.99, 999.9 ± (3% rdg + 0.5%FS)
9999 ± (3% rdg + 5 digits)
99990 ± (3% rdg + 0.5%FS)
≤6%)
1
o
C
o
F (0 to 40oC); Humidity: < 80%RH
o
F (-10 to 50oC); Humidity: < 80%RH
EA33 V2.0 06/06 2
Meter Description
1. Light measurement display
2. Timer display
3. TIME button
4. HOLD button
5. Unit of measure button (Fc/lux)
6. Enter button
7. Luminous Intensity (cd) / Comparator button
8. READ / Right arrow button
9. Average reading tally display
10. Power ON/OFF button
11. Set button
12. Average button
13. Relative / Percent button
14. Light sensor
15. Left arrow / Memory button
16. Up / Down arrow buttons
Display
1. Relative Mode
2. Comparator Mode
3. Average
4. Data Hold
5. % Relative
6. Candela
7. % Relative
8. fc/lx-hours Integral Illuminance
9. Stray light measurement
10. Time Hold measurement
11. ft/m luminance intensity distance
12. Day-Hour minute-seconds
13. Memory Read
14. Memory location
15. Average Reading tally display
16. Integration cycles
17. Low battery
18. Elapsed time indicator
18
17
16
15
14
12
13
12
3
5
4
6
7
8
9
10
11
EA33 V2.0 06/06 3
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