System Program - Hach BioTector B7000 User Manual

System Program

OXIDATION PROGRAM 1
OXIDATION PROGRAM 1 TIC + TOC
ANALYZER ZERO
TIC SPARGE TIME
SAMPLE IN
TIC ACID
BASE PURGE
PRE BASE OZONE
 OXIDATION PROGRAM 1 TIC + TOC defines the system
parameters for Oxidation Phase operation in TIC & TOC
analysis mode. In TIC & TOC analysis mode, the TIC and TOC
contents of a sample are measured consecutively by means of a
single sample injection into a single reactor.
15s 20l/h  CO analyzer establishes a zero offset level for the ANALYZER
2
ZERO time (15s by default) with the oxygen flow (20 l/h)
settings.
 A "12_HIGH CO2 IN O2" fault is generated during this phase
and BioTector stops if the CO
CO2 ZERO LINE plus the CO2 ZERO ALARM value (250ppm
by default) for three consecutive reactions. See Fault Setup
section for details.
45s 40l/h  BioTector sparges and measures the TIC content of the sample
for the TIC SPARGE TIME (45s by default) with the oxygen flow
(40 l/h) settings.
 If the TIC level does not drop below the TIC CHECK level
(100ppm CO2 by default in Reaction Check menu) by the end of
TIC SPARGE TIME, BioTector automatically extends this time
(extension time) until the TIC level drops below 100ppm level.
 A "50_TIC OVERFLOW" warning is generated and BioTector
keeps running if the TIC level does not drop below 100ppm by
the end of the maximum extension time, which is 300 seconds.
The maximum extension time is not a programmable function. It
is a fixed figure within the system software.
15p M-V  SAMPLE IN defines the amount of sample (in pulses) to be
injected into the reactor at range 1. M-V stands for "Motorized
Variable" sample volume where sample is injected with the
Sample Pump operation.
 A single pulse pump operation corresponds to ½ revolution of
the pump roller.
 BioTector also utilizes M-F90 and M-F180 sample injection types
which stand for "Motorized Fixed" volume sample injection by
the 90° or 180° rotation of the Sample (ARS) Valve.
 Note that any change carried out on the factory SAMPLE IN
setting requires recalibration of the system.
 TIC ACID specifies the amount of acid reagent (in pulses) to be
3p
injected into the reactor at range 1.
1p  BASE PURGE identifies the amount of base (in pulses) to be
injected into the reactor when 70% of the TIC SPARGE TIME
has elapsed. The objective of Base Purge is to remove the
marginal level of CO
Base line in the reactor.
 After the TIC phase, the ozone generator is switched on for the
0s
Pre Base Ozone time (0s by default). The main objective of Pre
Base Ozone is to reduce any material build up inside the Ozone
Destructor if the samples contain high levels of Ammonia.
analyzer's reading is higher than
2
absorbed from the TIC phase into the
2
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