ABB AX411, User Manual

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16
…5.3 Configure Conductivity Sensors
Temperature Compensation
Select the type of temperature compensation required:
None – Select when raw conductivity measurement without temperature
compensation is required.
Examples
• Water for injection (WFI) for US Pharmacopoeia (USP) applications.
• Purified water for USP applications.
Linear – Select for non-standard applications monitoring and when manual
addition of temperature coefficient of unknown purity is required.
*
UPW – Select when temperature effect of pure water only is required or when
manual addition of temperature coefficient of unknown impurity to pure
water temperature effect is required – see Note below.
*
HCl – Select when temperature effect of pure water with trace acids is required
Examples
• Cation exchanger in-bed and outlet applications.
• Degassed cation conductivity applications.
*
NaOH – Select when temperature effect of pure water with trace caustic is required
Example
• Inferred pH in caustic-dosed waters applications.
*
NaCl – Select when temperature effect of pure water with trace salts is required
Examples
• General monitoring applications.
• Mixed-bed exchanger applications.
• Final polisher effluent applications.
• Cation exchanger inlet applications.
• Anion exchanger in-bed and outlet applications.
• Reverse osmosis applications.
*
NH3 – Select when temperature effect of pure water with trace ammonia is required
Examples
• Ammonia-treated make-up and boiler feed water applications.
• Condenser sampling applications.
• Hot well sampling applications.
• Before-cation column applications.
• Inferred pH in ammonia-dosed waters applications.
*
Applicable only on conductivities up to 10µS cm –1
Notes.
1) If
UPW
is selected, the temperature coefficient (
α
x 100) of the solution must be
calculated if unknown – see Appendix A1.1.
2) Source data is based on IEC International Standard 65D/85/FD15
Continued on next page…
A: Temp.Comp.
-----
NH3
NaCl
NaOH
HCl
UPW
Linear
None
A: Temp.Sensor
…5 PROGRAMMING