Extech Instruments EasyView EA33 User Manual page 5

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MODE 5 - Comparator Mode
In this mode the meter compares its measurements to one HIGH and one LOW limit. When the high
limit is exceeded, the plus sign appears on the LCD. When the measurement falls below the low
limit, the negative sign appears on the LCD.
1.
2.
parameter.
3. Press the ENTER key to enter the Comparator setting mode.
4. Press the down arrow key to select the desired unit of measure
(Lux or Fc).
5. Press ENTER to begin setting the measurement range.
6. Use the down arrow to select the desired range.
7.
appear.
8. Use the up/down arrow keys to set the high limit value.
9. Press the ENTER key to begin setting the Comparator LOW limit value. The minus symbol will
appear.
10. Use the up/down arrow keys to set the desired LOW limit value.
11. Press ENTER to complete the Comparator setup.
12. Press and hold the cd/COMP key for three seconds to activate the Comparator.
13. Now if a measurement exceeds the high limit, the plus sign will appear. If the low limit is
exceeded, the minus sign will appear. An audible beep will sound when a limit has been
reached.
14. Press the ENTER key to exit the Comparator mode.
99-Point Averaging
Illuminance is the amount of visible light incident upon a specific surface area. Since the EA33
sensor area is small, the Average Mode can be used to measure the illuminance of larger surface
areas; to accomplish this, up to 99 points can be averaged.
1. Press the
2. Press the MEM key to store a reading (up to 99 readings can be averaged). The display at the
lower left will keep a running tally of the readings recorded.
3. Press the READ key to perform the average calculation. The
average value will be displayed and held on the LCD.
4. Pressing the MEM key at this point allows the meter to
continuously average subsequent illuminance readings (the
display will only show an average value).
5. Use the READ button to toggle between this continuous Average
display and the normal measurement display.
6. Press the ENTER key to exit.
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