Emerson TCL instruction manual Model 499A CL-02 Sensor

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MODEL TCL

SECTION 1

 

DESCRIPTION AND SPECIFICATIONS

used to signal a fault condition. A fault alarm activates when an analyzer or sensor fault occurs.

When used for the determination of total chlorine, the Model 1056 analyzer is a single input instrument. The ana- lyzer is also available in a dual input version, where the second input can be pH, conductivity, dissolved oxygen, chlorine, or turbidity. For more information about the dual input option, refer to product data sheet PDS 71-1056.

MODEL 499A CL-02 SENSOR

The Model 499ACL-02 total chlorine sensor is used in the TCL sample conditioning system. Although the sensor is called a chlorine sensor, it really measures iodine. The iodine comes from the reaction between oxidants in the sample and the acetic acid/potassium iodide reagent added by the sample conditioning system.

The sensor consists of a gold cathode and a silver anode in an electrolyte solution. A silicone membrane, permeable to iodine, is stretched over the cathode. The analyzer applies a voltage to the cathode sufficiently negative to reduce all the iodine reaching it. Because the concentra-

tion of iodine in the sensor is always zero, a concentration gradient continuously forces iodine from the sample through the membrane into the sensor.

The reduction of iodine in the sensor generates a current directly proportional to the diffusion rate of iodine through the membrane, which is directly proportional to the concen- tration of iodine in the sample. Because the iodine concen- tration depends on the amount of total chlorine in the sample, the sensor current is ultimately proportional to the total chlorine concentration.

The permeability of the membrane to iodine is a function of temperature. A Pt100 RTD in the sensor measures the tem- perature, and the analyzer uses the temperature to compen- sate the total chlorine reading for changes in membrane permeability.

Sensor maintenance is fast and easy. Replacing the mem- brane requires no special tools or fixtures. Simply place the membrane assembly on the cathode and screw the retainer in place. Installing a new membrane and replenishing the electrolyte takes only a few minutes.

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Contents Total Chlorine Analyzer Read this page Before Proceeding Electrical Shock HazardPage Hazardous Area Installation Rev. Level DateModel TCL Total Chlorine Analyzer Table of Contents Contd List of TablesList of Figures IiiPage Model TCL Sample Conditioning System Section Description and SpecificationsModel 1056 Chlorine Analyzer Model 499A CL-02 Sensor Sample Requirements GeneralSample Conditioning System Electrolyte Capacity Approximately 25 mL Linearity per ISO 15839 0-10 ppm 2% 0-20 ppm 3%Ordering Information and Accessories Accessories Sample Conditioning SystemDescription Weight Ship Weight DescriptionSchematic of Sample Conditioning System and Analyzer Principles of OperationInstallation InstallationUnpacking and Inspection Panel Mounting Dimensions Wall / Surface Mount Pipe MountInstall the Sample Conditioning Enclosure Install the SensorTCL Case Dimensions Provide Power to the Sample Conditioning System WiringPrepare Analyzer Conduit Openings Power Analog output wiringSensor Wiring Alarm wiringTotal Chlorine Apply Power to the Analyzer and Complete Quick StartEnglish Ppm mg/LTemp Units Menu Tree Zero the Sensor START-UPPrepare the Reagent Start Sample FlowDisplay and Operation DisplayKeypad Outputs Programming the ANALYZER-TUTORIALCalibrate RangeO2 S1 4mA 0.0C O2 S1 20mA 100.0C Output Range O1 S1 4mA 0.000 ppmO1 S1 20mA 08.50 ppm SecurityUsing Hold HoldLanguage English Contrast Configuring the Main DisplayMain Format Format, Language, Warning, and ContrastDefault Settings Programming the AnalyzerDefault Settings Choices Measurement ChlorineTemperature related settings Default SettingsChoices Default Security CodeOutputs First CONFIGURING, RANGING, and Simulating OutputsDefinitions ProgramOutput ConfigureAssign Output Output Range Configure Simulate Output ConfigureProcedure Ranging Outputs O1 S1 20mA 10.00 ppm O2 S1 4mA O2 S1 20mARangeSimulate Configure SimulateConfiguring Alarms and Assigning Setpoints OutputDefinitions Configure/Setpoint AlarmsAlarm Simulate Alarms Configure/SetpointAlarm Simulate Alarm Don’t SimulateConfiguring the Measurement Alarms Configure/Setpoint SimulateSynch Timers Yes Procedure Synchronizing TimersMeasurement Sensor1SensorTemperature Configuring Temperature Related SettingsProgram Outputs Alarms Measurement Temperature UnitsUnitsC S1 Temp Comp AutoSecurity Configuring Security SettingsProgram Alarms Measurement Temperature SecurityReset Analyzer Resetting the AnalyzerProgram Temperature Security Diagnostics Reset AnalyzerDigital Communications HartCalibration Calibrating TemperatureIntroduction Calibrate SensorSensor11 Output Temperature S1 Calibration + 25.0CProcedure S1 CalibrationCalibrating Total Chlorine Determination of Total ChlorineProcedure Zeroing the Sensor Choose Total ChlorineCalibrate? Temperature S1 Calibration ZeroZeroCalCal Process CalS1 Zero Cal Sensor zero failed Press Exit SensorOutput Calibrating Analog OutputsCalibrate? Sensor MA Output Cal Meter 000 mAOutput Trim Complete Maintenance AnalyzerTotal Chlorine Sensor Cleaning the membraneReplacing the membrane and electrolyte solution GeneralSensor Parts Spare Parts Reagent Sample and reagent tubingReplacing Sample Tubing Peristaltic pump tubing Model TCL Replacing the air pump Replacing the air pump diaphragm and check valves Replacement Parts and Reagent for Sample Conditioning System DescriptionFaults Section TroubleshootingUsing the Diagnostic Feature OverviewFault message Explanation Section Troubleshooting When a Fault Message is ShowingHardware Error Sensor Incompatible Sensor CPU ErrorSensor ADC Error Sensor RTD OpenSensor Need Factory Cal Troubleshooting When a Warning Message is ShowingExplanation Section Sensor Negative ReadingZero current is too high Troubleshooting When no Error Message is ShowingProblem See Section Zero current is unstableSensitivity is low or readings are low Readings drift Anod Simulating InputsCath Simulating Temperature Simulating temperatureNON-WARRANTY Repair Warranty RepairSection Return of Material Warranty Return of MaterialSpecifications subject to change without notice

TCL specifications

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