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9. Taking measurements
a) Switching on/off
• Hold down the
/HOLD
button (4) for 2 seconds to switch on the meter.
• If the meter display does not turn on, check the battery in the battery compartment on the rear of the device.
• Hold down the
/HOLD
button (4) for 2 seconds to switch off the meter after use.
b) Enabling/disabling the automatic power off function
The meter features a power off function that automatically switches the meter off after 10 minutes of inactivity.
• Hold down the
/HOLD
(4) and
S/UP
(3) buttons to disable the automatic power off function. The clock symbol
(K) in the upper-right corner of the LCD display will disappear.
• Hold down the
/HOLD
and
S/UP
buttons to enable the automatic power off function. The clock symbol will ap-
pear on the LCD display.
c) Selecting the operating mode
SCAN
→
ZERO
→
UNIT
→
MEM
→
TIME
→
Transmission
MODE
• Press the
MODE
button (1) to move through the available
operating modes in a cycle. There are six available modes:
SCAN>ZERO>UNIT>MEM>TIME>Transmission
d) Setting the sensor to zero (calibration)
You can calibrate the sensor / set a specific gradient before taking an irradiance measurement. You can switch be
-
tween the two calibration modes.
M
• Press the
MODE
button (1) to switch to ZERO mode (calibra-
tion mode).
• Press the
M/DOWN
button (2) to switch between the two pa-
rameters in ZERO mode.
1
Setting the irradiance reading to zero
• Go the photoelectric power display (the W/m² or BTU/ft²xh units will appear on the LCD display).
• Attach the sensor cover (10). Press the S/UP button (3) to set the photoelectric power display to zero before taking
a measurement.
• Hold down the
S/UP
button (3) for 2 seconds to reset the photoelectric power display.
