Model 401036 Version 3.1 9/07
4
Operation
1. Turn the meter ON or OFF with the ON/OFF key.
2. Press the Lux/Fc key to select the unit of measure for light intensity.
3. With the lens cap completely covering the light sensor, zero the meter by adjusting the
screw on the right side of the meter for an LCD reading of 0.0.
4. Remove the lens cap to allow the sensor to collect light.
5. Read the light intensity measurement on the LCD.
6. For over-range conditions, the ‘OL’ icon will display. Select a higher range by pressing
the Range key until a valid reading replaces the ‘OL’ display.
7. For the 20,000 range, multiply the displayed reading by a factor of 10.
Data Hold
Press the HOLD key to freeze the displayed reading. Press HOLD again to return to the
normal operating mode.
Maximum (MAX) reading
Press the MAX key to display only the highest reading. As higher measurements are made
the display updates accordingly. The ‘MAX’ icon appears on the LCD in this mode of
operation. To return to normal operation, press the MAX key again and the MAX indicator
will extinguish.
Range selection
Press the RANGE key to select the appropriate measurement range. Start with the lowest
range (20) and work up to higher ranges as needed. If ‘OL’ (overload) is displayed, press
the range key until a valid reading is displayed.
Datalogger
REC/ERASE Key
The REC/ERASE key is used to record and erase data. Press the REC/ERASE key once
to log one reading (REC icon flashes once on the LCD). To automatically datalog readings
at programmable intervals (continuous recording mode), press and hold the REC/ERASE
key for 3 seconds (REC icon begins flashing repeatedly).
Press the REC/ERASE key any time while recording to exit the record mode. When the
memory is full (16,000 readings or 255 sets), the LCD will display ‘FULL’ and recording
ends. To download and view the stored data, connect the meter to a PC and perform the
steps provided in the ‘PC Interface’ section of this manual.
To erase stored data, perform these steps:
1. With the meter turned off, press and
hold
the REC/ERASE key.
2. Turn the meter on by pressing the ON/OFF key and then immediately release the
ON/OFF key.
3. Continue to hold the REC/ERASE key until ‘del’ flashes 3 times on the LCD. The meter
automatically returns to normal operation after the data are erased.
