11-feb-18  23:59:54    SERIOUS INSTRUMENT PROBLEM !!!
Problem with air flow  pump or plumbing.
Flow < 1 vLPM.
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11-feb-18  23:59:54  Measurements ended
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.                   Number of lamps (L) = 7
.                   Filter running time = 48.91 hours
.             Total airflow this filter = 5.96 cubic meters
.    Mean BC concentration of all lamps = 87 ng/vm3
.
Report for lamp 1 (370 nm):
. Ending voltages: sen(beam) =   1.307  sen(zero) =   0.021
.                  ref(beam) =   2.312  ref(zero) =   0.021
. Optical attenuation of filter deposit = 43
.  Total aerosol black carbon on filter = 552 ng
Mean aerosol black carbon concentration = 92 ng/vm3
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The reference beam showed lamp intensity fluctuations of 113 ppm.
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Report for lamp 2 (470 nm):
. Ending voltages: sen(beam) =   1.138  sen(zero) =   0.021
.                  ref(beam) =   2.483  ref(zero) =   0.021
. Optical attenuation of filter deposit = 34
.  Total aerosol black carbon on filter = 549 ng
Mean aerosol black carbon concentration = 92 ng/vm3
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The reference beam showed lamp intensity fluctuations of 36 ppm.
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Report for lamp 3 (520 nm):
. Ending voltages: sen(beam) =   1.487  sen(zero) =   0.021
.                  ref(beam) =   1.646  ref(zero) =   0.021
. Optical attenuation of filter deposit = 29
.  Total aerosol black carbon on filter = 519 ng
Mean aerosol black carbon concentration = 87 ng/vm3
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The reference beam showed lamp intensity fluctuations of 61 ppm.
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Report for lamp 4 (590 nm):
. Ending voltages: sen(beam) =    .935  sen(zero) =   0.021
.                  ref(beam) =   2.047  ref(zero) =   0.021
. Optical attenuation of filter deposit = 25
.  Total aerosol black carbon on filter = 515 ng
Mean aerosol black carbon concentration = 86 ng/vm3
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The reference beam showed lamp intensity fluctuations of 272 ppm.
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Report for lamp 5 (660 nm):
. Ending voltages: sen(beam) =    .390  sen(zero) =   0.021
.                  ref(beam) =    .822  ref(zero) =   0.021
. Optical attenuation of filter deposit = 23
.  Total aerosol black carbon on filter = 518 ng
Mean aerosol black carbon concentration = 87 ng/vm3
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The reference beam showed lamp intensity fluctuations of 85 ppm.
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Report for lamp 6 (880 nm):
. Ending voltages: sen(beam) =    .708  sen(zero) =   0.021
.                  ref(beam) =   1.041  ref(zero) =   0.021
. Optical attenuation of filter deposit = 16
.  Total aerosol black carbon on filter = 509 ng
Mean aerosol black carbon concentration = 85 ng/vm3
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The reference beam showed lamp intensity fluctuations of 153 ppm.
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Report for lamp 7 (950 nm):
. Ending voltages: sen(beam) =   1.195  sen(zero) =   0.021
.                  ref(beam) =   1.080  ref(zero) =   0.021
. Optical attenuation of filter deposit = 15
.  Total aerosol black carbon on filter = 493 ng
Mean aerosol black carbon concentration = 82 ng/vm3
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The reference beam showed lamp intensity fluctuations of 153 ppm.
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Disk space = 2.53993E+08 bytes free: One entry at every 10 minutes.
There is space for 107990 hours ( 4500 days) more data
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