Pyroelectric and Photodiode Energy Sensors
1919-R User Manual
47
7.4.5
Measuring Average Power
Although the Pyroelectric sensors are designed for energy measurement, they can be used to
measure average power as well using the formula:
Average Power = Average Energy X Frequency
where the energy and frequency of the pulses have been measured by 1919-R.
Note:
1919-R use when measuring power is the same as when measuring energy and has been
described in full in section
Operation of 1919-R with Pyroelectric and Photodiode Energy Sensors
To measure average power:
1.
Set
Mode
to
Power
.
2.
Set measurement parameters as
Average power will be displayed as a function of “Energy x Frequency” on the screen as well as
the laser’s frequency.
Figure
7-5 Pyroelectric Power Bargraph
7.4.6
Measuring Total Energy Exposure
For Pyroelectric sensors, measuring total energy exposure is implemented as the summing of
energy measurements of laser pulses until a predetermined stop condition is reached.
