ABB AX400 Series User Manual

Single and dual input analyzers for pH/Redox (ORP)
AX416, AX436, AX460, AX466 & AX468 2 Operation
10 IM/AX4PH Rev. P
2.3.5 Dual Input pH and Redox (ORP)
Measured pH and Millivolts
Sensor A.
Sensor B.
Note. The
Probe Type for Sensors A and B can be set to any combination of pH, Redox
or ORP – see Section 5.3, page 30. The display indications change depending on
Probe Type settings, e.g. if Sensor A is set to Redox and Sensor B to pH, the lower
display shows Redox (ORP)/pH.
Measured Temperature
Sensor A.
Sensor B.
Note. The measured temperature is displayed only if
Te m p . S e n s or is not set to None –
see Section 5.3, page 30.
Measured Millivolts
Sensor A.
Sensor B.
Offset – Sensor B
Displays the offset value for Sensor B set in
B: Adjust Offset – see Section 4.1.3,
page 22.
% Slope and pH Check Value – Sensor A
% slope value.
A value between the programmed minimum % slope value (see
Set Min Slope –
Section 5.3) and 105 % is displayed. If the value is outside these limits, check the
electrode system.
pH check value (zero value).
Displayed as an additional indication of pH electrode system condition; 7 ph is the
optimum value for glass electrodes and 0 ph for Antimony electrodes.
See Section 3.1, page 12.
See Section 4.1, page 19.
A3: Type set to Wash (Section 5.5) – see Section 2.3.6, page 11.
A3: Type not set to Wash (Section 5.5) – return to top of page.
pH/Redox (ORP)
7.00
pH
-256
mV
Temperature
25.6
Deg.C
Millivolts
404
mV
A: Slope & Check
100.0
%
7.00
pH
24.4
Deg.C
-256
mV
B: mV Offset
0
mV
pH/Redox (ORP)
VIEW SETPOINTS
SENSOR CAL.
Wash Function

ABB AX400 Series Specifications

General

Display	LCD with backlight
Output	4 to 20 mA, HART
Process connection	Flanged
Lining material	PTFE, PFA
Electrode material	Stainless steel, titanium
Communication	HART