Chelsea Technologies Group
tracka
User Guide HB179 Issue 7.0
10. APPENDIX 3 - TYPICAL SENSITIVITY CURVES
Following three graphs show typical instrument sensitivity over PMT gain range and
concentration of chlorophyll-a in acetone. The three curve sets illustrate the signal improvement
when averaging the indicated number of flash sequences:
CHLOROPHYLL-A IN ACETONE AVERAGING 1 FLASH PACKET (30nm CORION
FILTER)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.000 0.001 0.010 0.100 1.000 10.000 100.000
Chlorophyll-a Concentration (ug/L)
Referenced Signal
Gain 1
Gain 4
Gain 16
Gain 64
Gain 256
CHLOROPHYLL-A IN ACETONE AVERAGING 4 FLASH PACKETS (30nm CORION FILTER)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.000 0.001 0.010 0.100 1.000 10.000 100.000
Chlorophyll-A Concentration (ug/L)
Referenced Signal
Gain 1
Gain 4
Gain 16
Gain 64
Gain 256
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