Hach BioTector B7000i - 8.3.2 System Program

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8.3.2 System Program
SYSTEM PROGRAM 1
SYSTEM PROGRAM 1 TIC + TOC_D
 SYSTEM PROGRAM 1 TIC + TOC_D defines the system
parameters for Oxidation Phase operation in TIC & TOC_D
analysis mode. In TIC & TOC_D analysis mode, the TIC and
TOC contents of a sample are measured consecutively by
means of a single sample injection into a single reactor. In this
analysis mode, the reactor and sample lines are washed using
base reagent depending on a pre-programmed cycle and
depending on specific site conditions and TOC levels.
 Sample Pump
 SAMPLE PUMP is a shortcut to Commissioning, Sample Pump
menu. See Section 8.2.2 Sample Pump for details.
ANALYZER ZERO 15s 20l/h
 CO
2
analyzer establishes a zero offset level for the ANALYZER
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
2
analyzer’s reading is higher than
CO2 ZERO LINE plus the CO2 ZERO ALARM value (250ppm
by default) for three consecutive reactions. See Section 8.3.8
Fault Setup for details.
SAMPLE IN 7p 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-F180 sample injection type which stand
for “Motorized Fixed” volume sample injection by the 180°
rotation of the Sample (ARS) Valve.
 Note that any change carried out on the factory SAMPLE IN
setting requires recalibration of the system.
BASE INJECTION 1p
 BASE INJECTION defines the amount of base reagent (in
pulses) used to inject the liquid sample into the reactor for the
reaction at range 1.
TIC ACID 2p
 TIC ACID specifies the amount of acid reagent (in pulses) to be
injected into the reactor at range 1.
TIC SPARGE TIME 25s 20l/h
 BioTector sparges and measures the TIC content of the sample
for the TIC SPARGE TIME (25s by default) with the oxygen flow
(20 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.
BASE 8p
 BASE defines the amount of base (in pulses) to be injected into
the reactor for the reaction at range 1.
BASE OXIDATION 135s 10l/h
 BioTector oxidizes the sample for the BASE OXIDATION time
(135s by default) with the oxygen flow (10 l/h) settings. If any
CO
2
is released during this phase, it is measured and added to
the TOC result because the default setting of PEAK
INTEGRATION is TOC+BASE OXID in Result Integration menu.