Emerson 51-DO-03, 51-DO-04 instruction manual Temp comp Auto, Temp comp Manual Temp units C

Page 41

MODEL DO-03/04	SECTION 5.0
	SOFTWARE CONFIGURATION

5.7TEMPERATURE COMPENSATION AND TEMPERATURE UNITS

1.Refer to Section 6.1 for a discussion of the ways in which temperature affects dissolved oxygen measurement.

pH Temperature Noise rejection

ExitEnter

Temp comp : Auto

Temp units: °C

ExitEdit

Temp comp: Manual

Temp units: °C

Temperature : 25.0°C

ExitEdit

2.Press any key to enter the main menu. Move the cursor to "Program" and press Enter (F4).

3.Move the cursor to "Configure" and press Enter (F4).

4.Move the cursor to "Temperature" and press Enter (F4).

5.Use the and keys to move through the list of items. To make a change press Edit (F4). Use the arrow keys to change settings to the desired value. Press Save (F4) to store changes.

Auto: In automatic temperature compensation, the analyzer meas- ures the temperature using an RTD (resistance temperature device) in the sensor. The analyzer then uses the measured temperature to calculate the membrane permeability correction and oxygen solubili- ty factor.

Manual: In manual temperature compensation, the analyzer uses the temperature entered by the user to calculate the membrane perme- ability correction and oxygen solubility factor. It does NOT use the actual process temperature. Do NOT use manual temperature com- pensation unless the difference between the calibration and meas- urement temperatures is less than 2°C.

Manual temperature compensation is useful if the sensor RTD has failed and a replacement sensor is not available.

If Manual temperature compensation is selected, be sure to enter the desired temperature.

35

Image 41

Contents Model DO-03/04 Dissolved Oxygen Measurement System with Air Blast CleanerEssential Instructions Page Section Title Model DO-03/04 Measuring System11.0 List of Tables10.0 Iii List of FiguresSection Title Features and Benefits Section SpecificationsRepeatability ±0.05 ppm 25C PowerRFI/EMI EN-61326 Output Accuracy ± 0.05 mAMaterials of Construction Maximum continuous pressure 50 psig 446 kPa absMaximum distance between compressor and sensor Analyzer dimensions Enclosure dimensions 9240048-00 Tag, stainless steel, specify marking Power required selectionDescription Installation Section InstallationUnpacking and Inspection Model or part number DescriptionAssembling the pipe and pipe clamp Installing the air compressor enclosureInstalling the handrail mounting assembly Assembling the washer head and pipe boom Installing the sensor in the washer head assemblyAttaching the pipe boom to the handrail mounting assembly Attaching the air compressor enclosure to the handrail Installing the sensor in the washer head assembly General Section WiringPOWER, ALARM, and Output Wiring 454EPH02 Section Section General Sensor WiringWiring the Oxygen Sensor Section Display and Operation Alarm StatusDisplay KEY Functions and ControlMenu Tree for the 54eA Analyzer Section Software ConfigurationOn following Main Menu Calibrate See Diagnostic Variable see Choices Factory Settings Setpoints Program Settings ListChoices Factory Settings Configure Choices Factory Settings Alarm 1 setpoint Alarm setpointsAlarm 2 setpoint Alarm 3 setpointRanging the Outputs MA 0.00 ppm 20 mA 20.00 ppm Output 1 12.00 mATest output Test alarm 1 OpenSimulated tests Display Outputs AlarmsMeasure Oxygen Meas units ppmLanguage English Display left Display right Out Display contrast Timeout OnTemp units C Output 1 mA Output 2 mA Output Measurement OutputsOutput 1 control Range 4-20 mA Dampen 0 sec Hold Last Value Output 1 SetupOutput 1 Control Alarm 1 control ConfigureAlarm 1 setup Alarm 2 control Changing Alarm Parameters Alarm 1 setup Alarm 1 control Alarm Low Activate ProcessFeed limit Disable Alarm FaultTimeout 3600 sec Alarm 4 setupInterval timer Alarm 4 setup Feed limit timerTimer Disable Timer Time activated Interval 24.0 hr Interval timer setupTemp comp Auto Temperature Compensation and Temperature UnitsTemp units C Temp comp Manual Temp units CNoise Reduction 60 HzBarometric Pressure Bar meas AutoBar units mm Hg Salinity 0.0 o/oo Main sensor calSecurity Noise rejection Main sensor cal SecurityAction Definitions Analyzer Mode PriorityCondition Definitions Introduction Section Calibration TemperatureTemperature Calibration Adjust temp + 025.1 CSensor Current as a Function Dissolved 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 ppmCalibrate main sensor Zero main sensor Adjust temperatureStandardize Calibrating Barometric PressureTrimming the Outputs Section Calibration Current OutputsReplacement Parts Section MaintenanceCleaning the membrane Replacing electrolyte solution and membraneSection Spare Parts Power FuseAIR Blast Sensor Washer Replacement Parts Location Part Number DescriptionTroubleshooting When a Fault Message is Showing Section TroubleshootingFault message Explanation See Section OverviewHigh input current Temperature error low or highCheck sensor zero Sense line openZero current is too high Troubleshooting When no Fault Message is Showing OxygenProblem See Section Barometric pressure reading is too high or too low Possible error warning during in-process calibrationZero reading Is unstable Readings drift Process readings are erraticSensor does not respond to changes in oxygen level Oxygen readings are too lowProblem Action Troubleshooting not Related to Measurement ProblemsSimulating Inputs Dissolved Oxygen Sensor Polarizing Voltage Resistance Expected currentSimulating temperature Simulating TemperatureGeneral Section Return of MaterialSensor or Circuit Board only Return of Materials RequestWarranty Specifications subject to change without notice