20-jul-19  08:14:54    SERIOUS INSTRUMENT PROBLEM !!!
Problem with air flow  pump or plumbing.
Flow < 1 vLPM.
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20-jul-19  08:14:54  Measurements ended
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.                   Number of lamps (L) = 7
.                   Filter running time = 13.66 hours
.             Total airflow this filter = 1.35 cubic meters
.    Mean BC concentration of all lamps = 430 ng/vm3
.
Report for lamp 1 (370 nm):
. Ending voltages: sen(beam) =   1.249  sen(zero) =   0.021
.                  ref(beam) =   2.346  ref(zero) =   0.021
. Optical attenuation of filter deposit = 50
.  Total aerosol black carbon on filter = 633 ng
Mean aerosol black carbon concentration = 471 ng/vm3
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The reference beam showed lamp intensity fluctuations of 161 ppm.
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Report for lamp 2 (470 nm):
. Ending voltages: sen(beam) =   1.062  sen(zero) =   0.021
.                  ref(beam) =   2.511  ref(zero) =   0.021
. Optical attenuation of filter deposit = 38
.  Total aerosol black carbon on filter = 626 ng
Mean aerosol black carbon concentration = 466 ng/vm3
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The reference beam showed lamp intensity fluctuations of 109 ppm.
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Report for lamp 3 (520 nm):
. Ending voltages: sen(beam) =   1.502  sen(zero) =   0.021
.                  ref(beam) =   1.770  ref(zero) =   0.021
. Optical attenuation of filter deposit = 33
.  Total aerosol black carbon on filter = 587 ng
Mean aerosol black carbon concentration = 437 ng/vm3
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The reference beam showed lamp intensity fluctuations of 120 ppm.
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Report for lamp 4 (590 nm):
. Ending voltages: sen(beam) =   1.086  sen(zero) =   0.021
.                  ref(beam) =   2.350  ref(zero) =   0.021
. Optical attenuation of filter deposit = 28
.  Total aerosol black carbon on filter = 580 ng
Mean aerosol black carbon concentration = 431 ng/vm3
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The reference beam showed lamp intensity fluctuations of 350 ppm.
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Report for lamp 5 (660 nm):
. Ending voltages: sen(beam) =    .373  sen(zero) =   0.021
.                  ref(beam) =    .790  ref(zero) =   0.021
. Optical attenuation of filter deposit = 25
.  Total aerosol black carbon on filter = 578 ng
Mean aerosol black carbon concentration = 430 ng/vm3
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The reference beam showed lamp intensity fluctuations of 176 ppm.
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Report for lamp 6 (880 nm):
. Ending voltages: sen(beam) =    .773  sen(zero) =   0.021
.                  ref(beam) =   1.158  ref(zero) =   0.021
. Optical attenuation of filter deposit = 17
.  Total aerosol black carbon on filter = 536 ng
Mean aerosol black carbon concentration = 398 ng/vm3
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The reference beam showed lamp intensity fluctuations of 235 ppm.
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Report for lamp 7 (950 nm):
. Ending voltages: sen(beam) =   1.326  sen(zero) =   0.021
.                  ref(beam) =   1.221  ref(zero) =   0.021
. Optical attenuation of filter deposit = 15
.  Total aerosol black carbon on filter = 508 ng
Mean aerosol black carbon concentration = 378 ng/vm3
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The reference beam showed lamp intensity fluctuations of 262 ppm.
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Disk space = 2.540012E+08 bytes free: One entry at every 10 minutes.
There is space for 107994 hours ( 4500 days) more data
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