ABB AWT420 Operating Instruction

Also see for AWT420: Commissioning instructions Manual Manual

Contents

ABB AWT420 Operating Instruction Manual pdf 52 page image

52AW T4 2 0 | U N I V E R S A L 4 - W I R E , D U A L- I N P U T T R A N S M I T T E R | O I/A W T4 2 0 - E N R E V. B…14 Sensor setup4-electrode conductivityMenu Comment DefaultTag Enter an alphanumeric sensor tag (16 characters maximum) to identify the sensor on theOperator Pages.TAG1Measurement Type Select measurement type:• Conductivity/ConcentrationNote. If a change is made the I/O sources are reset.ConductivityNote The following menus are displayed only if Measurement Type = ConductivityConductivity Unit Select the conductivity units:• mS/cm/μS/cmmS/cmSensor Group Enter the sensor group for the measuring cell used –• Group A/Group Bsee the relevant conductivity cell manual.Group ARange High Set the span value used in Chart and Bargraph views. Sensor Group dependent– see table belowRange Low Set the zero value used in Chart and Bargraph views. 0Note The following menus are displayed only if Measurement Type = ConcentrationSensor Group Enter the sensor group for the measuring cell used –• Group A/Group Bwsee the relevant conductivity cell manual.N/AConc Solution Note. Displayed only if Sensor Group = Group ASelect the Concentration Solution• NaOH/HCl/H2SO4/H3PO4/NaCl/KOH/CustomN/AConcentration Unit Note. Displayed only if Conc. Solution = CustomSelect the Concentration Units• None(Blank)/ppm/mg/l/ppb/μg/l/%/CustomN/ACustom Units Note. Displayed only if Concentration Units = CustomEnter an alphanumeric string (6 characters maximum) for the custom (user defined) concentration units.N/AConc Curve Table Set the user defined concentration curve using the 6-point linearizer table(concentration against conductivity).N/ARange High View the span value used in Chart and Bargraph views. N/ARange Low View the zero value used in Chart and Bargraph views. N/AFilter Type Select the signal filtering type:• None/Low/Medium/HighNoneTemp Comp Type Set the type of temperature compensation:• Manual/Automatic/NoneAutomaticManual Temperature Note. Displayed only if Temp. Comp. Type = ManualEnter the temperature of the sample within the range –10.0 to 120.0 °C.25.0 °CTC Curve Note. Not displayed only if Temp. Comp. Type = NoneSet the type of automatic temperature compensation required:• TC Coeff./Standard KCl/NaOH/NaCl/HCl/H2SO4/H3PO4/KOH/User DefinedTC CoeffUser 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/ATC 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 %/°CSensor DiagnosticsDirty Sensor Detect dirty sensor condition:• Enabled/DisabledDisabledOut Of Solution Detect Out Of Solution condition:Enabled/DisabledDisabledReset To Defaults Select to reset all Sensor Setup parameters to their default valuesSensor group Conductivity measuring rangeA 0 to 2000 mS/cmB 0 to 2000 μS/cm