Emerson 54e pH/ORP instruction manual PH Sensor Wiring, PH Sensor Compatibility

Page 15

MODEL 54e pH/ORP

SECTION 3.0

 

WIRING

pH SENSOR COMPATIBILITY

The following sensors contain solution grounds:

Models 381+, 385+, 396P, 396R

The use of these sensors will allow both glass and ref- erence diagnostics.

Figure 3-3 shows how these sensors should be wired. Note that wiring connections depend on whether the sensor (or junction box) has a preamp or not. If the sensor (or j-box) has a preamp, then the preamp loca- tion jumper is moved accordingly and wiring connected as on the left of Figure 3-3. Otherwise, the jumper is moved to the "analyzer" position and wiring for TB1 is connected as on the right hand side.

Junction box (P/N 23550-00) wiring for sensors that contain a preamp is strictly point to point. All sensor leads are run to the junction box and carried through by the extension cable (P/N 9200273). Only use this rec- ommended extension cable and be careful to connect all cable leads in the junction box. Sensors without pre- amps that require cable extension should be wired up to the junction box (P/N 23555-00) as per the appropri- ate sensor instruction manual.

The following sensors do not contain solution grounds but are compatible with the Model 54e pH/ORP:

Models 389-02-54, 396-54, 397-54, 399-09

Sensors without solution grounds must be wired differ- ently (see Figure 3-6). Diagnostics will only be possible on the glass electrode side of the sensor.

When extending cable, the junction box with preamp (P/N 23555-00) must be used. See Figure 3-7 for wiring details.

3.5 pH SENSOR WIRING

Be sure that the pH sensor has been properly installed and mounted. Wire the sensor to the junction box (if so equipped) and/or Model 54e pH/ORP according to Figures 3-5 through 3-7, or use the wiring diagram drawing included inside the controller. Use a narrow- bladed screwdriver to facilitate sensor wiring (see Figure 3-2).

The wiring diagrams show connections between the Model 54e pH/ORP and the junction box used where distance from the sensor to the controller exceeds the integral sensor cable length and inter- connecting wire is required. The interconnecting sensor wire recommended is P/N 9200273. Use of this cable provides EMI/RFI protection and com- plete sensor diagnostics (for sensors so equipped). The maximum interconnecting wire length is 500 ft.

IMPORTANT

All interconnecting sensor cable ends must be properly dressed, as shown in Figure 3-4, to pre- vent the individual sensor and shield wires from shorting. All shields must be kept electrically sep- arate all the way back to the terminals on the Model 54e pH/ORP. Check that there is no continuity between the shield wires and any other sensor conductors or shields prior to connecting the sen- sor wiring to the terminals on the Model 54e pH/ORP. FAILING TO FOLLOW THESE INSTRUC-

TIONS WILL RESULT IN CONTROLLER MALFUNC- TION.

FIGURE 3-2. Sensor Wiring Photo

9

Page 14 Page 16
Image 15
Page 14 Page 16
Contents Model 54e pH/ORP PH/ORP Hart Analyzer/ControllerElectrical Shock Hazard Essential InstructionsPage Description and Specifications Model 54E PH/ORP Microprocessor AnalyzerSection Title Appendix Title List of TablesTable No Title About This Document Table of Contents List of FiguresSection Description and Specifications General DescriptionDescription of Controls Current Outputs Specifications Physical Specifications GeneralPower Relative Humidity 95%, non condensing AlarmsRecommended Sensors Analyzer Specifications @ 25COrdering Information Code OptionsPart NO. Description Unpacking and Inspection Section InstallationMechanical Installation Locating the ControllerPanel Mounting Alarm Relay Output Wiring Section WiringPower Input Wiring Analog Output Wiring454EPH02 PH Sensor Wiring PH Sensor CompatibilityTions will Result in Controller MALFUNC- Tion 454EPH01 Cable Dressing Final Electrical Check Wiring to Model Introduction Section CalibrationHold Mode Off Adjust temp 25.1 CTemperature Calibration Autocal buffer Buffer 1 -- WaitAutomatic TWO-POINT Calibration Auto buffer cal done Use the arrow keys to select the correct bufferCalibration Notes Manual TWO-POINT Calibration Calibrate pointPt 04.00pH 25C Pt calibration doneSINGLE-POINT pH Calibration Standardize 7.01 pH59.16 mV/pH Temperature Compensation OptionsTemp comp Auto Output trimHold Mode Output trimTrim Outputs PH Settings List Section Software ConfigurationRanges Factory Settings User Settings Diagnostics Section Outline of Menu Levels Setpoint 07.00 pH Alarm High 14.00pHChanging Alarm Setpoints Simulate testsChanging Output Setpoints PID only Setpoint 7.00 pH4mA 0.00 pH 20mA 2.00 pH Setpoint + 06.90 pHMA +00.00 pH OutputOutput MA 0.00 pH 20 mA 14.00 pH Output 1 12.00 mASimulated tests Alarm setpoints Output setpointsTest output Test alarm Testing Outputs and AlarmsTest alarm 1 Open Test alarm 1 OpenMeasure pH Display right AL2Security Caution Display contrast Timeout OnOutput Control Parameters Control ModeDisplay Changing Output ParametersFault 22.00 mA Range 4-20 mAlRange 4-20 mA Hold Disable feature Fault 22.00mAOutput 2 control Output 2 setup Hold feature setupAlarms Alarm 3 controlInterval timer Relay Default None Alarm LowSetpoint 0.01 pH Delay 0 sec Hysteresis 0.01 pH Delay 0 secURV 2.00 pH Relay default NoneSetpoint +07.00 pH Time period 30 secAlarm 4 Setup Alarm FaultFeed limit Disable Timeout 3600 secTimer Disable Recovery 600 secOn time 120 sec Interval Timer Examples Diagnostics Diagnostics OffZero offset 60 mV Stabilize pH 0.01 pH Stabilize time 10 sec DiagnosticsAuto Calibration Setup Autocal StandardStandard Buffers Auto Calibration SetupSection Theory of Operation Continuous Sensor DiagnosticsInterval Timer Typical set pointsSee .8 for instructions on chang- ing these setpoints Time Proportional Control TPC Mode Code Alarm RelaysAnalog Outputs Normal ModeAction Definitions Controller Mode PriorityController Mode Priority Chart Condition DefinitionsMeasurement and Set Point Feedback Control PID Control Mode CombinationsPID Control Code PID ControlProportional Mode Gain Proportional Gain Plus Integral ResetControl Loop Adjustment and Tuning Process Reaction Curve Process Reaction Curve MethodPID Control Section Special Procedures and Features Password ProtectionLevel 1 3 Password Privileges Lock all Configuring SecuritySecurity Custom CurveSolution Temperature Compensation Temp coeff +.000Sensor iso 07.00 pH Operate iso +07.00 pH Troubleshooting is easy as 1, 2, 3… Section TroubleshootingDiagnostic Messages Description of problem Diagnostic MessagesSymptom Action Quick Troubleshooting GuideDiagnostic Variables Theoretical pH vs. Millivolt Values at 25C 77F Ohms Ambient Temperature Troubleshooting GuidelinesTemperature Compensation Circuit Troubleshooting ProcedurePreamplifier Troubleshooting Procedure Preamp in a junction box FigureController preamp check Figure Junction Box Preamplifier Check No Power Troubleshooting GuideCoated glass electrode Clean with soft cloth and clean water Password protected Part Number Description Replacement PartsGeneral Warranty RepairNON-WARRANTY Repair Section Return of MaterialQuick Startup ORP Appendix a ORP ConfigurationItem Choices ORP Settings User Settings Table A-1. ORP Settings ListDiagnostics Section Choices ORP Settings User SettingsSimulated tests Output setpointsORP Calibration Standardize 400 mVSensor or Circuit Board only Return of Materials RequestReturn of Material WarrantySpecifications subject to change without notice
Top Page Image Contents