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Maintenance, Calibration – Campbell Scientific CM3 Kipp and Zonen Pyranometer User Manual

Page 13

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CM3 Pyranometer

9

4: Z=F x 10^n (P30)

1:

0.0

F

2:

00

n, Exponent of 10

3:

1

Z Loc [ MJ_m2____ ]

5: End (P95)

6: If time is (P92)

1:

0

Minutes (Seconds --) into a

2:

60

Interval (same units as above)

3:

10

Set Output Flag High (Flag 0)

7: Real Time (P77)

1:

1220

Year,Day,Hour/Minute (midnight = 2400)

8: Totalize (P72)

1:

1

Reps

2:

1

Loc [ MJ_m2____ ]

*Table 2 Program

02: 0.0000

Execution Interval (seconds)

*Table 3 Subroutines

End Program

6. Maintenance

On a monthly basis the level of the pyranometer should be checked. Any dust
or debris on the sensor window should be removed. The debris can be removed
using water (de-ionized or distilled) or alcohol.

7. Calibration

Recalibration is suggested every two years. Calibrations can be done in one of
two ways.

One method is to calibrate the sensor in the field by placing a “transfer
standard” (a sensor that has been calibrated against a “secondary standard”)
next to the sensor being calibrated. Preferably daily totals of several days
should be compared. The calibration factor could be corrected if results differ
by more than six percent.

Another method would be to send the sensor to a facility that has a “secondary
standard”. Contact Kipp & Zonen (

www.kippzonen.com

) for the nearest

calibration facility, or send it to Campbell Scientific and they will have it
recalibrated.