ABB AWT420, Operating Instruction

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52
AW T4 20 |
U N I V ER S A L 4 - W I R E , D UA L- I N P U T T R A N SM I T T ER | O I/AW T4 2 0 - EN R E V. B
…14 Sensor setup
4-electrode conductivity
Menu Comment Default
Tag Enter an alphanumeric sensor tag (16 characters maximum) to identify the sensor on the
Operator Pages .
TAG1
Measurement Type Select measurement type:
• Conductivity/Concentration
Note . If a change is made the I/O sources are reset.
Conductivity
Note . The following menus are displayed only if Measurement Type = Conductivity
Conductivity Unit
Select the conductivity units:
• mS/cm/μS/cm mS/cm
Sensor Group Enter the sensor group for the measuring cell used –
• Group A/Group B
see the relevant conductivity cell manual. Group A
Range High Set the span value used in Chart and Bargraph views. Sensor Group dependent
– see table below
Range Low
Set the zero value used in
Chart
and
Bargraph
views. 0
Note . The following menus are displayed only if Measurement Type = Concentration
Sensor Group Enter the sensor group for the measuring cell used –
• Group A/Group Bw
see the relevant conductivity cell manual. N/A
Conc . Solution
Note. Displayed only if
Sensor Group
=
Group A
Select the Concentration Solution
• NaOH/HCl/H2SO4/H3PO4/NaCl/KOH/Custom
N/A
Concentration Unit Note . Displayed only if Conc. Solution = Custom
Select the Concentration Units
• None(Blank)/ppm/mg/l/ppb/μg/l/%/Custom
N/A
Custom Units Note . Displayed only if Concentration Units = Custom
Enter an alphanumeric string (6 characters maximum) for the custom (user defined) concentration units.
N/A
Conc . Curve Table Set the user defined concentration curve using the 6-point linearizer table
(concentration against conductivity). N/A
Range High
View the span value used in Chart and Bargraph views. N/A
Range Low View the zero value used in Chart and Bargraph views. N/A
Filter Type Select the signal filtering type:
• None/Low/Medium/High None
Temp . Comp . Type Set the type of temperature compensation:
• Manual/Automatic/None Automatic
Manual Temperature Note . Displayed only if Temp. Comp. Type = Manual
Enter the temperature of the sample within the range –10.0 to 120.0 °C.
25.0 °C
TC Curve Note
. Not displayed only if Temp. Comp. Type = None
Set the type of automatic temperature compensation required:
• TC Coeff./Standard KCl/NaOH/NaCl/HCl/H2SO4/H3PO4/KOH/User Defined
TC Coeff
User Def . TC Curve Note . Displayed only if TC Curve = User Defined.
Set the user defined temperature compensation curve using the six point linearizer table (% against °C).
N/A
TC Coefficient Note . Displayed only if TC Curve = User Defined.
Enter the temperature coefficient (α x 100) of the solution (0.01 to 5.00 %/°C).
If unknown, the temperature coefficient (α) of the solution must be calculated – see page 97.
2.00 %/°C
Sensor Diagnostics
Dirty Sensor Detect dirty sensor condition:
• Enabled/Disabled Disabled
Out Of Solution Detect Out Of Solution condition:
Enabled/Disabled Disabled
Reset To Defaults Select to reset all Sensor Setup parameters to their default values
Sensor group Conductivity measuring range
A 0 to 2000 mS/cm
B 0 to 2000 µS/cm