Hach BioTector B3500s, User Manual

Page: 120 / 166

Page 120
TC CAL STD 15.0mgC/l ▪
In VOC systems, the sum of the TIC and TOC Calibration
Standard solution is displayed as TC Calibration Standard.
When TOC Calibration Standard is programmed as 0.0mgC/l
above, and when a concentration of TIC Calibration Standard is
programmed above, BioTector displays the TC Calibration
Standard as 0.0mgC/l on purpose. This allows the calibration of
TIC without any effect on the TC calibration. In other words, as
programmed, system ignores the TC span calibration results and
omits any TC related warnings.
TC CHECK STD 15.0mgC/l
▪
In VOC systems, the sum of the TIC and TOC Check Standard
solution is displayed as TC Check Standard. When TOC Check
Standard is programmed as 0.0mgC/l above, and when a
concentration of TIC Check Standard is programmed above,
BioTector displays the TC Check Standard as 0.0mgC/l on
purpose. This allows the check of TIC without any effect on the
TC check. In other words, as programmed, system ignores the
TC span check results and omits any TC related warnings.
TOC BAND 25%
▪ TOC BAND determines the tolerance limits (

25% by default) for
the Span Calibration or Span Check reaction results for TOC.
▪
In TC and VOC systems, this function is named as TC BAND.
▪ If the average span result is outside the tolerance limits, a
“30_TOC /TC SPAN CAL FAIL” or “33_TOC /TC SPAN CHCK
FAIL” warning is logged depending on system analysis mode.
TIC BAND 25%
▪
TIC BAND determines the tolerance limits (

25% by default) for
the Span Calibration or Span Check reaction results for TIC.
▪
If the average span result is outside the tolerance limits, a
“31_TIC SPAN CAL FAIL” or “34_TIC SPAN CHCK FAIL”
warning is logged.
TIC FACTOR = TOC YES ▪ If the TIC FACTOR = TOC is selected as “YES” (by defa ult), the
TOC span factor is used for TIC.
▪
If the TIC FACTOR = TOC setting is “YES”, when the TOC Span
Adjust value is changed, the TIC Span Adjust value will also
change automatically.
▪ In VOC systems, this function is named as TIC FACTOR = TC.
SPAN ADJUST HISTORY ▪ Anytime the Span Adjust value is changed, either manually by
the user or automatically by the system, the new Span Adjust
factor is stored in the Span Adjust History archive with the time,
date, span RANGE, span type (calibration or check) and the
standard solution used.
▪ The meaning of the codes used in the system for span adjust
are as follows:
TOC/TC/TIC-SC: Span calibration result for TOC/TC/TIC.
TOC/TC/TIC-SK: Span check result for TOC/TC/TIC.
TOC/TC/TIC-SM: Manually input span adjust for TOC/TC/TIC.