Xylem 6-Series Multiparameter - Manual (Page 344)

PAR Sensor Appendix K
YSI Incorporated Environmental Monitoring Systems Operations Manual K-3
Finally, if you want to present your PAR data in photon flux density (umoles/second/m
2
), enter the
Advanced|Sensor menu as shown below and enter values for the PAR gain settings after consulting the
Certificate of Calibration obtained from Li-Cor for each sensor.
The number that should be entered is derived from the Calibration Multiplier in the Certificate of
Calibration supplied with each sensor, but the exact entry requires some modification of the Certificate
value. First, the Calibration Multiplier “in water” should be selected. Second, the negative sign should be
dropped from the number prior to entry. Finally, the number should be divided by either 100 (Low
Sensitivity Hardware) or 1000 (High Sensitivity Hardware) prior to entry. Thus, if the two identical
sensors characterized by the above Certificate were present in the sonde, but were configured for both low
sensitivity (PAR1) and high sensitivity (PAR2), the entered gain numbers should be 3.1578 for PAR1 and
0.31578 for PAR2, with both numbers derived from the –315.78 value on the Certificate. As noted above,
once these entries are made, the viewed and logged PAR values will be in umoles/second/m
2 of Photon
Flux Density.
For additional information about modification of you 6600 to include a PAR sensor configuration, contact
Endeco/YSI (1-800-363-3269).
------------Advanced sensor------------
1-TDS constant=0.65
2-Pres psi=0
3-DO temp co %/C=1.1
4-DO warm up sec=40
5-( )Wait for DO
6-Wipes=1
7-Wipe interval=5
8-SDI12-M/wipe=1
9-Turb temp co %/C=0.3
A-(*)Turb spike filter
B-Chl temp co %/C=0
C-( )Chl spike filter
D-PAR1 gain= 3.1578
E-PAR2 gain=0.31578
Select option (0 for previous menu):
------------Advanced sensor------------
1-TDS constant=0.65
2-Pres psi=0
3-DO temp co %/C=1.1
4-DO warm up sec=40
5-( )Wait for DO
6-Wipes=1
7-Wipe interval=5
8-SDI12-M/wipe=1
9-Turb temp co %/C=0.3
A-(*)Turb spike filter
B-Chl temp co %/C=0
C-( )Chl spike filter
D-PAR1 gain=1
E-PAR2 gain=1
Select option (0 for previous menu):