SECTION IV OPERATION
4.1 GENERAL
This section of the manual contains information required to use and
operate the radiometer in a safe and proper manner.
4.2 IRRADIANCE MEASUREMENT PROCEDURE
a. Be sure that this meter is appropriate for the spectral region of
interest.
b. Place the sensor at the point where the irradiance is to be mea-
sured.
c. Turn on the light source.
d. Flip the power switch to the ‘‘POWER ON’’ or ‘‘MOMENTARY’’ posi-
tion as desired.
e. The value of the irradiance over the sensitive area of the sensor will
be displayed in microwatts per square centimeter (DMXA-Series)
or milliwatts per square centimeter (DMHA-Series).
f. Return the power switch to the “OFF” position and remove the
sensor from the light source.
NOTES: The least significant digits of the measured irradiance may
change as the display is being observed. The amount of variance will
depend on the stability of the light source, with the change being
smaller for tubular fluorescent-type lamps and larger for HID (High
Intensity Discharge) lamps.
7
1. Power Switch
2. Numerical Display
5. Sensor Window
3. Retractable Cord
4. Charger Jack
(Back of Instrument)
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