ANATEL A643, Operator'S Manual, Page: 91 / 222

Anatel A643a - Calibration and Validation 91 of 220
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Anatel
Operator Manual
6.4
Conductivity Calibration
Conductivity calibration provides a confirmation of the accuracy of the conductivity values
reported by Anatel’s on-line Total Organic Carbon instrumentation. The calibration consists of
determining the instrument’s meter accuracy by installing a NIST-traceable resistor and then
verifying the cell constant by measuring a solution of known conductivity according to USP
Method <645>. The instrument’s meter accuracy must be within 0.1 µS/cm and its cell constant
must be known to be within ±2%, therefore the conductivity solution measurement must be
within ±2% of the reported label concentration.
Note:
Refer to Standard Operating Procedure (SOP) #643–3 for complete instructions on performing
this procedure.
To perform a conductivity calibration:
1) With the desired Analyzer selected in any View, press the Manual Key to access its
menu selections.
2) Use the Up and Down Keys to specify Calibrations .
3) Press Enter to display its submenu.
4) Use the Up and Down Keys to specify Calibrate .
5) Select Cond Calibrate from the subsequent screen and press Enter . If the chosen
Analyzer is connected to an A-Net network on which other instruments reside, the
analyzer will prompt to confirm that it is the correct instrument by verifying its serial
number.
Fig 6-17 : Conductivity Calibration
1 SENSOR NAME
TOC Calibrate:
X
Cond Calibrate:
Fig 6-18 : Calibrate Menu