ABB AX416 User Manual page 34

Single and Dual Input Analyzers for pH/Redox (ORP)
AX416, AX436, AX460, AX466 & AX468
Yes
No
-----
A: Sample Comp.
No
Yes
-0. 0 35
pH/°C
A: Sample Coeff.
60. 0
%
A: Set Min Slope
Config. Sensor A
32
Solution Temperature Compensation
Select to enable compensation for solution temperature effects referenced to 25ºC.
Yes
Sample Coefficient
If
Sample Comp.
within the range 0.020 to -0.050 (in -0.001 increments). For ammonia and sodium
hydroxide dosed boilers the value is typically -0.035 (this depends on the individual
boiler chemistry). The exact value for a particular sample needs to be determined by
laboratory analysis.
pH Calibration Minimum Slope Value
Set the required pH calibration minimum slope value, in %, within the range 60.0 to
90.0 (in 0.1 increments). The calibration fail limit is set automatically to 20% below the
minimum slope setting - see Table 4.1.
Sensor B (dual input analyzers only) configuration is identical to Sensor A configuration.
Config. Sensor B
CONFIG. DIAGS
see section 5.4, page 33
is set to , enter the temperature coefficient of the sample, in pH/ºC,
Yes
5 PROGRAMMING
IM/AX4PH Issue 9