Emerson TCL instruction manual Procedure Zeroing the Sensor, Choose Total Chlorine

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MODEL TCL

SECTION 9

 

CALIBRATION

9.3.2 Procedure — Zeroing the Sensor

1.Place the sensor in a beaker of deionized water. Be sure no air bubbles are trapped against the membrane.

2.Observe the sensor current. The current will drop rapidly at first and then gradually reach a stable zero value. To monitor the sensor current, press the DIAG key. Move the cursor to the chlorine sensor and press ENTER. The input current is the first line in the display. Note the units: nA is nanoamps, uA is microamps. Typical zero current for a 499ACL-02 sensor is -10 to +50 nA.

A new sensor or a sensor in which the electrolyte solution has been replaced may require several hours (occasionally as long as overnight) to reach a minimum zero current. DO NOT START THE ZERO ROUTINE UNTIL THE SENSOR HAS BEEN IN THE ZERO SOLUTION FOR AT LEAST TWO HOURS.

3.Press MENU. The main menu screen appears. The cursor will be on Calibrate. Press ENTER.

Calibrate

SensorSensor11

Sensor 2

Output 1

Output 2

4.Choose the sensor you wish to calibrate. Sensor 2 appears only if you have a dual input 1056 analyzer.

S1 Calibration

Total Chlorine

Temperature

S1 Calibration ZeroZeroCalCal

In Process Cal

S1 Zero Cal Sensor zero done

S1 Possible

Error, Proceed?

NoNo

Yes

5.Choose Total Chlorine.

6. Choose Zero Cal. The analyzer will automatically start the zero calibration

7. If the zero calibration was successful, the screen at left appears.

If the zero current is moderately larger than expected, an error message appears. To force the analyzer to accept the zero current, choose Yes. To repeat the calibration, choose No. For troubleshooting assistance, see Section 11.5.

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Contents Total Chlorine Analyzer Electrical Shock Hazard Read this page Before ProceedingPage Rev. Level Date Hazardous Area InstallationModel TCL Total Chlorine Analyzer List of Tables Table of Contents ContdIii List of FiguresPage Model 1056 Chlorine Analyzer Section Description and SpecificationsModel TCL Sample Conditioning System Model 499A CL-02 Sensor Sample Conditioning System GeneralSample Requirements Linearity per ISO 15839 0-10 ppm 2% 0-20 ppm 3% Electrolyte Capacity Approximately 25 mLAccessories Sample Conditioning System Ordering Information and AccessoriesDescription Description Weight Ship WeightPrinciples of Operation Schematic of Sample Conditioning System and AnalyzerUnpacking and Inspection InstallationInstallation Panel Mounting Dimensions Pipe Mount Wall / Surface MountInstall the Sensor Install the Sample Conditioning EnclosureTCL Case Dimensions Prepare Analyzer Conduit Openings WiringProvide Power to the Sample Conditioning System Analog output wiring PowerAlarm wiring Sensor WiringEnglish Apply Power to the Analyzer and Complete Quick StartTotal Chlorine Ppm mg/LTemp Units Menu Tree Prepare the Reagent START-UPZero the Sensor Start Sample FlowDisplay Display and OperationKeypad Calibrate Programming the ANALYZER-TUTORIALOutputs RangeO1 S1 20mA 08.50 ppm Output Range O1 S1 4mA 0.000 ppmO2 S1 4mA 0.0C O2 S1 20mA 100.0C SecurityHold Using HoldMain Format Configuring the Main DisplayLanguage English Contrast Format, Language, Warning, and ContrastProgramming the Analyzer Default SettingsMeasurement Chlorine Default Settings ChoicesChoices Default Default SettingsTemperature related settings Security CodeDefinitions CONFIGURING, RANGING, and Simulating OutputsOutputs First Assign ConfigureProgramOutput Procedure Ranging Outputs Configure Simulate Output ConfigureOutput Output Range O1 S1 20mA 10.00 ppm O2 S1 4mA O2 S1 20mAConfiguring Alarms and Assigning Setpoints Configure SimulateRangeSimulate OutputDefinitions Alarm AlarmsConfigure/Setpoint Alarm Simulate Alarm Alarms Configure/SetpointSimulate Don’t SimulateSynch Timers Yes Alarms Configure/Setpoint SimulateConfiguring the Measurement Procedure Synchronizing TimersSensor1Sensor MeasurementProgram Outputs Alarms Measurement Configuring Temperature Related SettingsTemperature Temperature UnitsUnitsC S1 Temp Comp AutoProgram Alarms Measurement Temperature Configuring Security SettingsSecurity SecurityProgram Temperature Security Diagnostics Resetting the AnalyzerReset Analyzer Reset AnalyzerHart Digital CommunicationsIntroduction Calibrating TemperatureCalibration Procedure Temperature S1 Calibration + 25.0CCalibrate SensorSensor11 Output S1 CalibrationDetermination of Total Chlorine Calibrating Total ChlorineChoose Total Chlorine Procedure Zeroing the SensorS1 Zero Cal Sensor zero failed Press Exit Temperature S1 Calibration ZeroZeroCalCal Process CalCalibrate? SensorCalibrate? Sensor Calibrating Analog OutputsOutput MA Output Cal Meter 000 mAOutput Trim Complete Analyzer MaintenanceReplacing the membrane and electrolyte solution Cleaning the membraneTotal Chlorine Sensor GeneralSensor Parts Spare Parts Sample and reagent tubing ReagentReplacing Sample Tubing Peristaltic pump tubing Model TCL Replacing the air pump Replacing the air pump diaphragm and check valves Description Replacement Parts and Reagent for Sample Conditioning SystemUsing the Diagnostic Feature Section TroubleshootingFaults OverviewHardware Error Troubleshooting When a Fault Message is ShowingFault message Explanation Section Sensor ADC Error Sensor CPU ErrorSensor Incompatible Sensor RTD OpenExplanation Section Troubleshooting When a Warning Message is ShowingSensor Need Factory Cal Sensor Negative ReadingProblem See Section Troubleshooting When no Error Message is ShowingZero current is too high Zero current is unstableSensitivity is low or readings are low Readings drift Cath Simulating InputsAnod Simulating temperature Simulating TemperatureSection Return of Material Warranty RepairNON-WARRANTY Repair Return of Material WarrantySpecifications subject to change without notice

TCL specifications

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