Emerson Process Management 53eA instruction manual Ppm

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MODEL 54eA

SECTION 9.0

 

CALIBRATION - FREE CHLORINE (498CL-01)

9.2ZEROING THE SENSOR

1.BEFORE ZEROING THE SENSOR, PLACE IT IN THE FLOW CELL AND ALLOW THE SENSOR TO OPER- ATE IN A FLOWING CHLORINATED SAMPLE FOR AT LEAST TWO HOURS.

2.After two hours, remove the sensor from the flow cell and place it in the zero standard. See Section 9.1 for suggested zero standards. Be sure no air bubbles are trapped against the membrane. The sensor current will

drop rapidly at first and then gradually reach a stable zero value. To monitor the sensor current go to the main display and press any key to obtain the main menu. Press the ê key once to highlight “Diagnostic variables.’ Press Enter (F4). The sensor current is the second item in the display. Note the units: nA is nanoamps, uA is microamps. To return to the main display, press exit (F1) twice. Typical zero current for the 498CL-01 sensor is between 30 and 80 nA. DO NOT ALLOW THE SENSOR TO STAND IN THE ZERO SOLUTION FOR MORE THAN 45 MINUTES. IF THE SENSOR SITS IN A NON-FLOWING SENSOR FOR TOO LONG, COPPER IONS FROM THE CORROSION OF THE COPPER ELECTRODE MAY DAMAGE THE SENSOR.

Calibrate main sensor

Zero main sensor Adjust temperature

ExitEnter

0.0 ppm

Sensor must be in zero solution

Abort Cont

3.From the main display, press any key to obtain the main menu. With the cursor on “Calibrate,” press Enter (F4).

NOTE

If Hold was enabled in Section 5.6, the hold screen will appear. To activate hold, refer to Section 5.6, step 11.

Press the ê key once to move the cursor to “Zero main sensor.” Press Enter (F4).

4.The screen at left appears. Press Cont (F3). “Wait” flashes until the sensor is stabilized. Once the zero step is complete, the message “Sensor zero done” appears.

5.Press Exit (F1) three times to return to the main display.

NOTE

If Hold was activated during calibration, “Hold Mode Activated” will continue to flash in the main display. Return the sensor to normal and deactivate Hold. Refer to Section 5.6, step 11.

NOTE

During calibration, ERROR and WARNING messages may appear. If an ERROR message appears, press Exit (F1) to leave and return to the previous screen. If a WARNING message appears, press Cont (F3) to continue the calibration or press Abort (F1) to leave. Continuing the calibration after a warning message appears may cause substantial errors in the subsequent measurement. Refer to Section 16.5 for assis- tance.

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Contents Amperometric Hart Analyzer/Controller Model 54eAEssential Instructions Page Model 54eA ANALYZER/CONTROLLER 13.0 10.011.0 12.0Section Title List of FiguresIii Features and Applications Section SpecificationsWeight/Shipping Weight 5 lb/6 lb 2 kg/2.5 kg Specifications GeneralPower Output Accuracy ± 0.05 mA AlarmsSpecifications Ozone Specifications OxygenSpecifications Free Chlorine Specifications Total ChlorineOrdering Information 115/230 VAC, 50/60 Hz Power24 VDC Installation Section InstallationUnpacking and Inspection Pipe mounting Pipe and Wall Mounting DimensionsPanel mounting Panel Mounting DimensionsPOWER, ALARM, and Output Wiring Section WiringGeneral 454EPH02 Wiring Model 499A oxygen, chlorine, and ozone sensors Sensor WiringGeneral 4054eA01 4054eA03 4054eA02 4054eA04 4054eA07 Display Alarm StatusSection Display and Operation General DescriptionProgram Settings List Section Software ConfigurationChoices Factory Settings Configure Choices Factory Settings Temperature compensation Section Menu Tree for the 54eA Controller Main Menu Main Alarm 2 setpoint Alarm setpointsRanging the Outputs MA 0.00 ppm 20 mA 20.00 ppm Output 1 12.00 mASetpoint 1.000 ppm 4mA 0.000 ppm 20mA 10.00 ppm Alarm setpointsOutput setpoints Simulated testSimulated tests Test alarm 1 OpenTest output Display ConfigureTemp units C Output 1 mA Output 2 mA Display contrast Timeout OnLanguage English Display left Display right Out Output 1 control OutputsOutput Measurement Range 4-20 mA Dampen 0 sec Hold Last Value Ctrl mode NormalOutput 1 Setup Output 1 ControlUsing hold Hold setupAlarm Control Settings Changing Alarm ParametersAlways configure the control parameters Before making Changes in the alarm setupAlarm Low Setpoint 0.000 ppm Alarm 1 controlAlarm 1 setup Alarm 2 controlHigh Alarm Low AlarmFeed limit timer setup Alarm FaultFeed limit Disable Timeout 3600 secInterval timer setup Alarm 4 setup Feed limit timerInterval timer Timer Disable Timer Time activated Interval 24.0 hrPH comp Manual PH value 7.00 pH PH sensor EnablePH sensor Disable Using the 499ACL-01 sensorGlass imp lo 20 MΩ Diagnostics OffAutocal Standard Operate iso 7.00 pH Sensor iso 7.00 pH Temp coeffTemp comp Manual Temp units C Temperature Compensation and Temperature UnitsTemp comp Auto Temp units CNoise Reduction 60 HzMain sensor cal Bar units mm Hg Bar meas AutoBarometric Pressure Lock all Lock program Lock configNoise rejection Main sensor cal SecurityCondition Definitions Controller Mode PriorityAction Definitions Introduction Section Calibration TemperatureTemperature Calibration Adjust temp + 025.1 CDissolved Oxygen Concentration Section Calibration Dissolved OxygenZeroing the Sensor Sensor must be in zero solutionCalibrating the Sensor in AIR Stabilizing . . . WaitSection Calibrating the Sensor Against a Standard Instrument Calibrate 8.32 ppmCalibrating Barometric Pressure Zero main sensor Adjust temperatureCalibrate main sensor StandardizeSensor Current as a Function of Free Chlorine Concentration Section Calibration Free Chlorine 499ACL-01Calibrate main sensor Full Scale Calibration Calibrate 1.100 ppmDual Slope Calibration Dual range calOutput trim Calibrate low pointCalibrate high point Low point 2.000 ppmIntroduction Section Calibration Free Chlorine 498CL-01Ppm 100ppm 000 ppm Section Calibration Free Chlorine 498CL-01 Section Calibration Total Chlorine This page intentionally left blank Sensor Current as a Function of Monochloramine Concentration Section Calibration MonochloraminePpm 100ppm Sensor Current as a Function of Ozone Concentration Section Calibration OzonePpm 100ppm PH at 25C Standards Nominal pH SectionAutomatic TWO-POINT Calibration Autocal buffer10.02 pH Pt 04.00pH 25C Calibrate pointManual TWO-POINT Calibration Pt 4.00pH 25.0C 10.01 pHPt calibration Standardize pH pH slope Standardization ONE-POINT CalibrationPH slope 60.00 mV/pH Trimming the Outputs Section Calibration Current OutputsPID Control Code Section PID and TPC ControlControl Loop Adjustment and Tuning Proportional Gain Plus Integral ResetProcess Reaction Curve Method Process Reaction Curve Section Time Proportional Control TPC Mode Code Overview Section TroubleshootingTroubleshooting When a Fault Message is Showing Fault message Explanation See SectionPH low or high input voltage Temperature error low or highHigh input current Check sensor zeroFailure factory and Failure eeprom Troubleshooting When no Fault Message is Showing OxygenProblem See Section Sense line openZero current is too high Possible error warning during in-process calibrationZero reading Is unstable Sensor does not respond to changes in oxygen level Barometric pressure reading is too high or too lowProcess readings are erratic Readings driftZero current is unstable ProblemSensor can be calibrated, but the current is too low Chlorine readings are too low Sensor does not respond to changes in chlorine levelProblem See Section Sensor does not respond to changes in monochloramine level Readings are too low Troubleshooting When no Fault Message is Showing Ozone Ozone readings are too low Sensor does not respond to changes in ozone levelTroubleshooting When no Fault Message is Showing pH Sensor does not respond to known pH changes Controller will not accept manual slope100 101 Process pH readings are noisySensor Polarizing Voltage Resistance Expected current Troubleshooting not Related to Measurement ProblemsProblem Action Simulating Inputs Dissolved OxygenSimulate Chlorine and Ozone 103 Simulating Inputs Other Amperometric MeasurementsVoltage mV PH at 25C Simulating pH input when the preamplifier is in the sensor104 Simulating temperature Simulating Temperature105 106 Measuring Reference VoltageReplacement Parts Part Number Description Section MaintenanceGeneral Section Return of MaterialWarranty Specifications subject to change without notice
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