Cod/Bod/Lpi/Flow Program - Hach BioTector B7000i User Manual

8.2.4 COD/BOD/LPI/FLOW Program

DISPLAY
COD/BOD PROGRAM
STREAM 1
TOC FACTOR
STREAM 2
TOC FACTOR
STREAM 3
TOC FACTOR
........................
STREAM 6
TOC FACTOR
LPI PROGRAM
STREAM 1
LPI VALUE
STREAM 2
TOC FACTOR
STREAM 3
TOC FACTOR
........................
STREAM 6
TOC FACTOR
NO  DISPLAY function, which is programmed as "NO" by default,
allows the user to program COD, BOD, LPI and/or FLOW & e.g.
TOC in kg/h parameter results to be displayed by the system
with the "YES" setting. When activated, the system sends the
relevant 4-20mA signals for COD, BOD (in mgO/l), LPI (in %),
and/or FLOW (in m
output channels if programmed. See Section
Program
 In Stream 1 1.0 0.0 setting, the first setting "1.0" acts as the
"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
1.0 0.0
FACTOR is displayed in this menu and used in above equation.
1.0
......... ......  If the DISPLAY is programmed as COD and/or BOD above, the
1.0 0.0
system multiplies the TOC result of the corresponding stream
1.0
(STREAM 1-6) 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.
 LPI Value (Lost Product Index Value) is the application
dependent TOC value for the target lost product. For example
the LPI value for milk in a dairy plant can be determined and
0.0mgC/l
installed as 60000 mgC/l.
 When the display of the LPI values is activated with the
0.0mgC/l
DISPLAY function above, BioTector calculates the % LPI values
using the measured TOC result and the site specific LPI value
0.0mgC/l
......... ...... programmed in this menu as follows:
LPI (%) = [ (TOC Result) / (LPI VALUE) * 100]
0.0mgC/l
 When activated, the % LPI values are displayed in analysis
result screen and in the reaction archive menus.
 If the DISPLAY of the Flow Program is activated in systems built
with the sample flow analog input signal option, in addition to the
% LPI value, BioTector calculates the LP Value (Lost Product in
l/h) using the measured TOC result, the specific LPI Value and
the recorded stream specific Sample Flow value as follows:
LP (l/h) = [ (TOC Result) / (LPI VALUE) * Sample Flow * 1000]
 When activated, the LP values in l/h are displayed in analysis
result screen and in the reaction archive menus.
/h) & e.g. TOC (in kg/h) to the relevant result
3
for details.
8.2.8 4-20mA
Page 103