User Manual

3. TAKING A MEASUREMENT
The ILT770 sensor is calibrated with the sensor aperture over filled with light perpendicular to
the light source. The calibration reference plane is the front surface of the housing. When
taking an irradiance or dose measurement the same conditions should be applied. The light
source to be measured must fully cover the input optics opening with light. The sensor should
be placed so that the front surface is at the treatment location and perpendicular to the
source.
The ILT770 offers simple operation. If all of your settings are correct, simply press and hold
button 1 to turn on the meter, place the sensor in the measurement location turn on the lamp
and view the results on the display.
3A FIRST TIME USERS:
First attach the sensor to the top of the meter by aligning the BNC connector and
twisting to lock in place.
Press and hold button 1 until the meter turns on. Let the meter warm up for a few
minutes.
Change the units between irradiance (W/cm2) and dose (J/cm2) as needed by
pressing button 1.
If a dark zero is required, cover the sensor with an opaque object and press and hold
button 2.
If an ambient zero is required place the sensor in the measurement location with the
test light off or covered and then press and hold button 2.
Warm up the lamp as needed before measuring.
Place the sensor in the measurement location assuring the front surface of the sensor
is at the same distance from the lamp that the product / material will be placed and that
the sensor is perpendicular to the light source.
The meter will automatically begin to sense any changes to the light level and will
provide a readout on the display, updating every ¼ second.
Press button 3 to save the readings as needed.
Press and hold button 1 to shut off your device, or wait 5 minutes and the meter will
shut off automatically to conserve battery life. While plugged into a USB power source,
the meter will never power off.
4. GRAPHING
The graph mode is designed to visualize the uniformity or stability of a light’s irradiance or
dose for a short period of time. It is not designed for long term monitoring. The meter will
automatically shut off after 5 minutes if no buttons are pressed when powered by battery to
ILT770 UV METER MANUAL REV A 9/21 Page number 5 of 9