18-dec-17  04:44:54    SERIOUS INSTRUMENT PROBLEM !!!
Problem with air flow  pump or plumbing.
Flow < 1 vLPM.
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18-dec-17  04:44:55  Measurements ended
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.                   Number of lamps (L) = 7
.                   Filter running time = 27.5 hours
.             Total airflow this filter = 3.32 cubic meters
.    Mean BC concentration of all lamps = 59 ng/vm3
.
Report for lamp 1 (370 nm):
. Ending voltages: sen(beam) =   1.763  sen(zero) =   0.021
.                  ref(beam) =   2.401  ref(zero) =   0.021
. Optical attenuation of filter deposit = 18
.  Total aerosol black carbon on filter = 234 ng
Mean aerosol black carbon concentration = 70 ng/vm3
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The reference beam showed lamp intensity fluctuations of 942 ppm.
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Report for lamp 2 (470 nm):
. Ending voltages: sen(beam) =   1.486  sen(zero) =   0.021
.                  ref(beam) =   2.578  ref(zero) =   0.021
. Optical attenuation of filter deposit = 13
.  Total aerosol black carbon on filter = 210 ng
Mean aerosol black carbon concentration = 63 ng/vm3
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The reference beam showed lamp intensity fluctuations of 1011 ppm.
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Report for lamp 3 (520 nm):
. Ending voltages: sen(beam) =   1.872  sen(zero) =   0.021
.                  ref(beam) =   1.753  ref(zero) =   0.021
. Optical attenuation of filter deposit = 10
.  Total aerosol black carbon on filter = 192 ng
Mean aerosol black carbon concentration = 58 ng/vm3
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The reference beam showed lamp intensity fluctuations of 1148 ppm.
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Report for lamp 4 (590 nm):
. Ending voltages: sen(beam) =   1.252  sen(zero) =   0.021
.                  ref(beam) =   2.296  ref(zero) =   0.021
. Optical attenuation of filter deposit = 9
.  Total aerosol black carbon on filter = 189 ng
Mean aerosol black carbon concentration = 57 ng/vm3
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The reference beam showed lamp intensity fluctuations of 1067 ppm.
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Report for lamp 5 (660 nm):
. Ending voltages: sen(beam) =    .501  sen(zero) =   0.021
.                  ref(beam) =    .889  ref(zero) =   0.021
. Optical attenuation of filter deposit = 8
.  Total aerosol black carbon on filter = 190 ng
Mean aerosol black carbon concentration = 57 ng/vm3
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The reference beam showed lamp intensity fluctuations of 1088 ppm.
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Report for lamp 6 (880 nm):
. Ending voltages: sen(beam) =    .867  sen(zero) =   0.021
.                  ref(beam) =   1.147  ref(zero) =   0.021
. Optical attenuation of filter deposit = 6
.  Total aerosol black carbon on filter = 182 ng
Mean aerosol black carbon concentration = 55 ng/vm3
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The reference beam showed lamp intensity fluctuations of 1130 ppm.
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Report for lamp 7 (950 nm):
. Ending voltages: sen(beam) =   1.455  sen(zero) =   0.021
.                  ref(beam) =   1.185  ref(zero) =   0.021
. Optical attenuation of filter deposit = 5
.  Total aerosol black carbon on filter = 177 ng
Mean aerosol black carbon concentration = 53 ng/vm3
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The reference beam showed lamp intensity fluctuations of 1066 ppm.
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Disk space = 2.53866E+08 bytes free: One entry at every 10 minutes.
There is space for 107936 hours ( 4497 days) more data
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