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8.2.4 COD/BOD Program
DISPLAY
STREAM 1
TOC FACTOR
STREAM 2
TOC FACTOR
STREAM 3
TOC FACTOR
........................
STREAM 6
TOC FACTOR
8.2.5 New Reagents Program
SPAN CALIBRATION
SPAN CHECK
AUTOMATIC RE-START
----
▪ DISPLAY function (--- not programmed by default) allows the
user to program (COD and/or BOD) the system to display and
send the relevant 4-20mA signals for COD and/or BOD (µgO/l) if
required. See Section
1.0
0.0
▪ In Stream 1 1.0 0.0 setting , the first setting "1.0" acts as the
1.0
"OVERALL FACTOR" and the second setting acts as the
1.0
0.0
"OFFSET FACTOR" in the following equation:
1.0
▪ COD (and/or BOD) = [Overall Factor * (TOC Factor * TOC)] +
1.0
0.0
Offset Factor
1.0
▪ In TC analysis mode, instead of the TOC FACTOR, the TC
.........
......
FACTOR is displayed in this menu and used in above equation.
1.0
0.0
1.0
▪ If the DISPLAY is programmed as COD and/or BOD above, the
system multiplies the TOC result of the corresponding stream
(STREAM 1-3) with the TOC FACTOR and with the OVERALL
FACTOR and adds the OFFSET FACTOR to calculate the COD
and/or BOD value.
▪ The STREAM FACTOR for each stream is obtained following
the procedures described in information sheet "I030. TOC to
COD or BOD Correlation Method", which is available in the
MMC/SD card shipped with the BioTector.
▪ Stream 1 factor is used for manual samples and calibration
standards.
NO
▪ SPAN CALIBRATION (NO by default) defines if the Span
Calibration reactions are part of the Install New Reagents
procedure in Reagents Setup menu.
▪ If SPAN CALIBRATION is activated (YES), the standard solution
needs to be connected to the Calibration/Manual port of the
BioTector as part of the Install New Reagents procedure. See
concentrations of the TOC STANDARD defined in Span
Calibration menu (see Section
for details).
NO
▪ SPAN CHECK (NO by default) defines if the Span Check
reactions are part of the Install New Reagents procedure in
Reagents Setup menu.
▪ Note that both SPAN CALIBRATION and SPAN CHECK
functions cannot be selected as YES simultaneously and cannot
occur together in the Install New Reagents procedure.
YES
▪ AUTOMATIC RE-START (Yes by default) defines BioTector to
return automatically online operation having completed the
Install New Reagents cycle.
8.2.8
4-20mA Program
2.3.2
Span
for details.
Calibration
Page 103
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