Extech Instruments Easy View Digital Light Meter EA31 사용자 설명서

                                                                                                                                     EA31  V2.0   06/06 

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Press the        button to turn power on or off. 

Press the lux / fc button to select the unit of measure. “fc” or “lux” will appear in 
the display. 

1.  The light sensor is attached to the meter with a coiled cable which allows 

placement of  the sensor up to approximately 3 feet from the meter. 

2.  The light sensor is a silicon photo diode and resides under the white domed 

lens. 

3.  To protect the lens from scratches, keep the protective cap on the sensor 

whenever the unit is not in use. 

4.  The back of the sensor has a tripod mounting hole. 

1.  Remove the protective cap from the sensor. 

2.  Place the sensor in a horizontal position at the measurement location. 

3.  Read the light level on the display. If the light measurement is out of range an 

“OL” indication will appear on the display. If the ‘OL’ appears, select a higher 
range by pressing the RANGE button. 

1.  Press the MX/MN button once to put the meter in MX/MN mode. The meter 

will now display the highest reading that occurs while the function is enabled. 
The “MAX” icon will appear in the display.  

2.  Press the MX/MN button again to display the lowest reading that occurs while 

the function is enabled. The “MIN” icon will appear in the display. 

3.  Press MX/MN again to toggle between the MAX and MIN readings.  

4.  To exit the MX MN mode and return to the normal real time display, press 

and hold the MX/MN button (2 seconds) until the MAX and MIN icons 
disappear.  

Press the HOLD button to freeze the displayed reading. The '

' hold icon will 

appear on the display. Press the HOLD button again to return to normal 
operation.