SR05-D1A3-PV manual v1801 42/83
Figure 6.1.6.1 Change serial communication settings window in the Sensor Manager
When new communication settings or a new Modbus address are entered, these need to
be confirmed by clicking “Change settings”. The instrument will then automatically
restart. In case the “Change settings” function is not activated, the original settings
remain valid. If the Modbus address is changed, the Sensor Manager will automatically
reconnect with the instrument using the new address after restart.
6.1.7 Sensor Manager: adjustment of the sensitivity by power users
The Sensor Manager does not allow a “standard user” to change any settings that have a
direct impact on the instrument output, i.e. the irradiance in W/m
2
. However, in case the
instrument is recalibrated it is common practice that the sensitivity is adjusted, and that
the latest result is added to the calibration history records. This can be done after
obtaining a password and becoming a “power user”. Please contact the factory to obtain
the password and to get directions to become a “power user”.
Example: During a calibration experiment, the result might be that SR05 has an
irradiance output in W/m
2
that is 990, whereas the standard indicates it should be 970.
The SR05 output is in this example 2.06 % too high. The original sensitivity of
16.15 x 10
-6
V/(W/m
2
) ought to be changed to 16.48, using registers 0x1029 + 0x102A.
The old calibration result is recorded in the calibration history file. In case there are still
older results these are moved over to higher register numbers 0x103F to 0x1051.
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