Hach BioTector B3500ul User Manual page 118

ZERO WATER
pH ADJUST BASE
pH ADJUST TIME
SERVICE ZERO
ZERO ADJUST HISTORY
▪ When ZERO WATER is programmed as "NO", BioTector adjusts
NO
▪ When ZERO WATER is programmed as "YES", BioTector takes
▪ When this function is activated, the relevant system messages
▪ The three pH ADJUST BASE parameters defines the number of
14 , 0 , 0
▪ This function is used to neutralize the pH of the Mixer Reactor.
60s ▪ pH ADJUST TIME determines the mixing time (60 seconds by
20 , 5 ▪ SERVICE ZERO specifies the number of zero calibration cycles
▪ SERVICE ZERO cycle is activated by the SET SERVICE ZERO
▪ Anytime the Zero Adjust value is changed, either manually by
▪ The meaning of the codes used in the system for zero adjust are
the zero background level based on the carbon content in the
acid and base reagents.
DI Water from the available system port (which could be the
ZERO WATER port or MANUAL/CALIBRATION port, and if
these ports are not available SAMPLE 1 port), and uses DI
Water as a sample during the Zero Calibration and Zero Check
cycles.
are also displayed in Install New Reagents menu. See section
2.2.2.1 Install New Reagents
pulses the base reagent pump operates to inject base reagent
into the reactor at each available system operation range, which
are Range 1, Range 2 and Range 3.
default) the Mixer Reactor operates for the pH neutralization of
the reactor.
to be repeated after a defined number of reactions between
each zero calibration cycle. The first setting "20" is the number of
reactions between each zero calibration cycle, and the second
setting "5" is the total number of zero calibration cycles which will
be carried out.
function in Service menu.
the user or automatically by the system, the new Zero Adjust
value is stored in the Zero Adjust History archive with the time,
date, zero range and the zero type (calibration, check or manual)
information.
as follows:
TOC/TC-ZC: Zero calibration result for TOC/TC.
TOC/TC-ZK: Zero check result for TOC/TC.
TOC/TC-ZM: Manually input Zero Adjust for TOC/TC.
for details.
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