Zero Program - Hach BioTector B7000 User Manual

Zero Program

ZERO PROGRAM
ZERO AVERAGE
TN BAND
SERVICE ZERO
5 , 3 , 3  In ZERO PROGRAM 5, 3, 3 setting, the first, second and third
 If two or any of the three ZERO PROGRAM settings is set to
3 , 2 , 2  In ZERO AVERAGE 3, 2, 2 setting, the first, second and third
 The TN BAND setting defines the % (e.g. 50%) and the intensity
50% , 100
 If the TN Zero Adjust figures are within the defined TN BAND at
 If the TN Zero Adjust figures are outside the TN BAND, system
 SERVICE ZERO specifies the number of zero calibration cycles
20 , 5
 SERVICE ZERO cycle is activated by the SET SERVICE ZERO
inputs define the minimum number of reactions to be carried out
at Range 1, Range 2 and Range 3 respectively during the Zero
Calibration and Zero Check cycles. Zero cycles are activated by
RUN ZERO CALIBRATION/CHECK functions in Zero Calibration
menu or by START NEW REAGENT CYCLE function in Install
New Reagents menu.
zero, system runs the zero calibration/check reactions only at
the programmed range(s) and calculates the TOC/TN Zero
Adjust values for the corresponding range(s) using the
measured zero adjust figure.
inputs define the number of zero reactions to be averaged to get
representative Zero Adjust values for all measured components
for Range 1, Range 2 and Range 3 respectively.
counts (e.g. 100) zero tolerance values (maximum allowable
change level) for TN zero adjust figures. At the end of the Zero
Calibration/Check reactions, the last 3, 2, 2 (in above example)
TN zero absorbance readings (see TNmgu values in engineering
reaction archive) are averaged and the % change are
calculated using the first TN calibration points (0mg/l absorbance
readings) of the corresponding TN calibration ranges in
Calibration Data menu:
the end of the zero calibration cycle, system generates the TN
Zero Adjust values without any warning. The next time a Zero
Calibration is carried out, the zero tolerance will be based on the
first TN calibration points adjusted with the previous zero adjust
figures.
generates a "44_TN ZERO CAL FAIL" warning at the end of a
zero calibration cycle. Zero Adjust figures are not generated and
the system continues operation using the previous Zero Adjust
values. At the end of a zero check cycle, system generates a
"47_TN ZERO CHCK FAIL" warning and logs it into the fault
archive.
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.
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