Emerson 51-DO-03, 51-DO-04 Installing the sensor in the washer head assembly

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MODEL DO-03/04	SECTION 2.0
	INSTALLATION

2.2.6 Installing the sensor in the washer head assembly

1.Remove the sensor from its box. Remove the plastic protective cap from the end of the sensor. Save the cap.

2.Replace the knurled cap provided with the sensor with the smooth cap (PN 33521-01). The smooth cap is shipped loose.

a.Hold the sensor with the membrane end pointing up.

b.Unscrew the knurled cap. Leave the membrane in place.

c.Screw the smooth cap in place. Hand tighten.

d.Hold the sensor with the membrane end pointing down. Shake the sensor a few times as though shak- ing down a clinical thermometer.

e.Slide the protective cap back over the end of the sensor.

3.Remove the set screw at the bottom of the sensor washer head assembly. See Figure 2-5. Pull the washer head from the shank. You are pulling against a dual O-ring seal.

4.Press the metal tab on the air hose quick connect fitting and remove the fitting and check valve.

5.Wrap the bottom facing threads of the sensor with pipe tape. Remove the protective cap and slide the O-ring (PN 9550291) over the end of the sensor until it rests against the lower edge of the bottom facing thread. The O-ring is in a bag taped to the side of the washer head assembly.

6.Screw the sensor into the bottom of the washer assembly. Hand tighten only. Replace the air hose and check valve assembly.

2.2.7 Assembling the washer head and pipe boom

1.Cement the upper portion of the washer assembly head to the PVC pipe boom. See Figure 2-5. Use 1-1/2 inch schedule 80 PVC pipe. Press (do not cement) the PVC elbow (PN 9320101) to the top of the pipe boom. The elbow keeps water from collecting in the pipe boom.

2.Pass the sensor cable and air hose through the boom and elbow.

3.Connect the end of the air hose to the barbed fitting on the check valve.

4.Push the washer head back onto the shank. Use a small amount of grease to lubricate the O-rings. Replace and tighten the set screw.

2.2.8 Attaching the pipe boom to the handrail mounting assembly

1.Slide the tongue of the pipe clamp into the clevis. Insert the bolt as shown in Figure 2-3.

2.Rest the boom on the maintenance bracket until ready to submerge the sensor in the basin.

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Contents Model DO-03/04 Dissolved Oxygen Measurement System with Air Blast CleanerEssential Instructions Page Section Title Model DO-03/04 Measuring SystemList of Tables 10.011.0 List of Figures Section TitleIii Features and Benefits Section SpecificationsOutput Accuracy ± 0.05 mA PowerRepeatability ±0.05 ppm 25C RFI/EMI EN-61326Maximum continuous pressure 50 psig 446 kPa abs Maximum distance between compressor and sensorMaterials of Construction Analyzer dimensions Enclosure dimensions Power required selection Description9240048-00 Tag, stainless steel, specify marking Model or part number Description Section InstallationInstallation Unpacking and InspectionInstalling the air compressor enclosure Installing the handrail mounting assemblyAssembling the pipe and pipe clamp Installing the sensor in the washer head assembly Attaching the pipe boom to the handrail mounting assemblyAssembling the washer head and pipe boom Attaching the air compressor enclosure to the handrail Installing the sensor in the washer head assembly Section Wiring POWER, ALARM, and Output WiringGeneral 454EPH02 Section Section Sensor Wiring Wiring the Oxygen SensorGeneral KEY Functions and Control Alarm StatusSection Display and Operation DisplayMenu 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 3 setpoint Alarm setpointsAlarm 1 setpoint Alarm 2 setpointRanging the Outputs MA 0.00 ppm 20 mA 20.00 ppm Output 1 12.00 mATest alarm 1 Open Simulated testsTest output Meas units ppm Outputs AlarmsDisplay Measure OxygenDisplay contrast Timeout On Temp units C Output 1 mA Output 2 mALanguage English Display left Display right Out Outputs Output 1 controlOutput Measurement Output 1 Setup Output 1 ControlRange 4-20 mA Dampen 0 sec Hold Last Value Changing Alarm Parameters ConfigureAlarm 1 control Alarm 1 setup Alarm 2 controlActivate Process Alarm 1 controlAlarm 1 setup Alarm LowAlarm 4 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 hrTemp comp Manual Temp units C Temperature Compensation and Temperature UnitsTemp comp Auto Temp units CNoise Reduction 60 HzBar meas Auto Bar units mm HgBarometric Pressure Salinity 0.0 o/oo Main sensor calSecurity Noise rejection Main sensor cal SecurityAnalyzer Mode Priority Condition DefinitionsAction 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 ppmCalibrating Barometric Pressure Zero main sensor Adjust temperatureCalibrate main sensor StandardizeTrimming the Outputs Section Calibration Current OutputsReplacing electrolyte solution and membrane Section MaintenanceReplacement Parts Cleaning the membraneSection Spare Parts Power FuseAIR Blast Sensor Washer Replacement Parts Location Part Number DescriptionOverview Section TroubleshootingTroubleshooting When a Fault Message is Showing Fault message Explanation See SectionSense line open Temperature error low or highHigh input current Check sensor zeroTroubleshooting When no Fault Message is Showing Oxygen Problem See SectionZero current is too high Possible error warning during in-process calibration Zero reading Is unstableBarometric pressure reading is too high or too low Oxygen readings are too low Process readings are erraticReadings drift Sensor does not respond to changes in oxygen levelSensor Polarizing Voltage Resistance Expected current Troubleshooting not Related to Measurement ProblemsProblem Action Simulating Inputs Dissolved OxygenSimulating temperature Simulating TemperatureGeneral Section Return of MaterialSensor or Circuit Board only Return of Materials RequestWarranty Specifications subject to change without notice