www.kippzonen.com/dustiq
Value
Meaning
Remarks
There is not enough sun light and not enough
soiling on the sensors
Enough sunlight
There is > 500 W/m² solar irradiation on the DustIQ.
But not (yet) enough soiling so wait for more soiling.
Enough soiling on both sensors
There is >3% transmission loss in registers 21 and 25.
But not enough sunlight (yet).
0
2
Enough sunlight and soiling on both sensors.
Calibration possible.
3
Unstable soiled measurements
Before calibration the DustIQ, must have had 2 minutes of stable sunlight
and the two sensors must have had 2 minutes of stable soiling.
4
1
On-site check for clear sky and local time is between 2 hours before and after local
solar noon. Check if there is >3% transmission loss in registers 21 and 25.
Contact people on-site to check readiness, time window and sky
conditions and if OK they can start the 2 minute waiting time
followed by pushing the button and cleaning.
Register
26
before calibration
Value
Meaning
Remarks
Successful calibration
Attempted to start without enough sun
Calibration was halted. Nothing has been changed.
Register 26 should be checked before pushing the button.
Attempted to start without enough soiling
Calibration was halted. Nothing has been changed.
Register 26 should be checked before pushing the button.
1
Attempted to start with
unstable sunlight on PV cell
Attempted to start with unstable dust measurement.
On-site personnel touched the glass area of sensor 1 or 2 during the 2 minutes
before pushing the button.
1000
1001
1002
1003
Button pushed but too short.
This prevents accidental start.
Push the button 3-5 seconds for the calibration to start.
1004
Time out. The button hasn’t been pushed
a second time within 2 minutes from first push.
Could be by accident. Not pushing the button a second time
is also a safe escape from the calibration procedure.
1005
Field calibration started withing 3 minutes
of start-up (without waiting)
1006
Sensor 1 showed too little soiling change.
Sensor 1 not properly cleaned or dried.
2010
Sensor 2 showed too little soiling change.
Sensor 2 not properly cleaned or dried.
2020
PV cell showed unreliable little change.
PV cell not properly cleaned or dried.
Or PV cell much cleaner than the sensors by e.g. accidental cleaning.
OR Clouds or a person has blocked the sunlight.
2030
Clean measurement unstable
Disturbance during clean measurement.
2040
Dustslope out of range
Dustslope is higher than expected but procedure was correct.
2050
Dustslope factor out of range
Dustslope is higher than expected but procedure was correct.
2060
The dust slopes in registers 36 and 38 have changed.
Refer to chapter 4.1 to see how older data or data from other DustIQs on the same PV
plant can be updated with the new calibration values. Valid values for register 36 and
38 are from 30 (extreme white soiling) to 300 (very dark soiling)
Clouds or a person has blocked the sunlight.
the sunlight in the 2 minutes before pushing the button.
Register
27
after calibration
Value
Meaning
Remarks
Tare successful
Tare started within 2 minutes of start up
Attempted to start tare procedure without waiting
the required 2minutes to allow for stabilization.
Hardware error
Signal is to low possible hardware failure.
3000
3006
Tare procedure is completed.
Register
27
after tare
3010
4
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REMOTE OFFICE cheat sheet
