Extech Instruments EasyView EA30 Manuel utilisateur

User Manual

EasyView Digital Light Meter

Model EA30

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EA30-en-GB_v3.4 5/17

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.

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

8. Data HOLD button

9. MAX/MIN button

10. fc foot candle select button

11. RELATIVE function button

Note: Battery compartment is located

on the rear of the instrument

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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

100µs. 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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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.

Never dispose of used batteries or rechargeable batteries in household waste.

As consumers, users are legally required to take used batteries to appropriate collection

sites, the retail store where the batteries were purchased, or wherever batteries are sold.

Disposal: Do not dispose of this instrument in household waste. The user is obligated to

take end-of-life devices to a designated collection point for the disposal of electrical and

electronic equipment.

Specifications

Ranges

Resolution

Accuracy

Lux

40.00

400.0

4000

0.01

0.1

± (3% Reading + 0.5% Full Scale)

40.00k

400.0kLux

0.01

0.1

if > 10,000 lux

±( 4% Reading + 0.5%Full Scale)

Foot candles

40.00

400

0.01

0.1

± (3% Reading + 0.5% Full Scale)

4000

40.00kfc

0.01

if > 1,000 fc

±( 4% Reading + 0.5%Full Scale)

Display Multi-function 3-3/4 (3999) digit LCD with Bargraph indicator

Over range indication LCD displays ‘OL’

Spectral response CIE photopic (CIE human eye response curve)

Spectral accuracy CIE Vfunction (f1  6%)

Measure Repeatability ±2%

Temperature coefficient ±0.1% per oC

Sampling rate 13.3 times per second (Bargraph); 1.3 times per second (digital display)

Photo detector Silicon photo-diode with spectral response filter

Peak hold Capture light peaks to 100uS

Operating conditions Temperature: 0 to 40oC (32 to 104oF); Humidity: < 80% RH

Storage conditions Temperature: -10 to 50oC (14 to 140oF); Humidity: < 80% RH

Dimensions 150 x 72 x 33mm (5.91 x 2.8 x 1.4")

Weight Approx. 320g (11.3 oz.) with battery

Low battery indication “BT” appears on the LCD

Power supply 6 ‘AAA’ cells; Battery life approx 400 hours

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Appendix

Typical Light Levels

Lux

Foot

Candles

Lux

Foot

Candles

Factories

Home

20-75

2-7

Emergency Stairs, Warehouse

100-150

10-15

Washing

75-150

7-15

Exit/Entrance Passages

150-200

15-20

Recreational

Activities

150-300

15-30

Packing Work

200-300

20-30

Drawing Room,

Table

300-750

30-75

Visual Work: Production Line

300-500

30-50

Makeup

750-1,500

75-150

Typesetting: Inspection Work

500-1,500

50-150

Reading, Study

1,500-3,000

150-300

Electronic Assembly, Drafting

1,000-2,000

100-200

Sewing

Office

Restaurant

75-100

7-10

Indoor Emergency Stairs

75-150

7-15

Corridor Stairs

100-200

10-20

Corridor Stairs

150-300

15-30

Entrance,

Wash Room

200-750

20-75

Conference,

Reception Room

300-750

30-75

Cooking Room,

Dining Table

750-1,500

75-150

Clerical Work

750-1,500

75-150

Show Window

1,500-2,000

150-2000

Typing, Drafting

Store

Hospital

75-150

7-15

Indoors

30-75

3-7

Emergency Stairs

150-200

15-20

Corridor/Stairs

75-100

7-10

Stairs

200-300

20-30

Reception

100-150

10-15

Sick Room,

Warehouse

300-500

30-50

Display Stand

150-200

15-20

Waiting Room

500-750

50-75

Elevator

200-750

20-75

Medical Exam

Room

750-1,500

75-150

Show Window,

Packing Table

750-1,500

75-150

Operating Room

1,500-3,000

150-300

Storefront, Show Window

5,000-10,000

500-1000

Eye Inspection

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Spectral Sensitivity

400 450 500 550 600 650 700

Wavelength (nm)

- - - - - Light Meter Response _____ CIE Response

0.8

0.6

0.4

0.2

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