Emerson 54ea - Manuals

iii MODEL 54eA TABLE OF CONTENTS LIST OF FIGURES Section Title Page 2-1 Wall Mounting .......................................................................................................... 5 2-2 Pipe Mounting...........................................................................................

1 MODEL 54eA SECTION 1.0 SPECIFICATIONS SECTION 1.0 SPECIFICATIONS 1.1 FEATURES AND APPLICATIONS The Model 54eA Analyzer/Controller with the appro-priate sensor monitors and controls dissolved oxy-gen (ppm and ppb level), free chlorine, totalchlorine, and ozone in a variety of process liquids.The an...

MODEL 54eA SECTION 1.0 SPECIFICATIONS 4 1.3 ORDERING INFORMATION The Model 54eA Microprocessor Analyzer measures dissolved oxygen, free chlorine, total chlorine, ozone, and pH. pH is available for free chlorine only. The analyzer has an on-board pressure sensor for automatic aircalibration of oxygen...

5 MODEL 54eA SECTION 2.0 INSTALLATION SECTION 2.0 INSTALLATION 2.1 UNPACKING AND INSPECTION Inspect the shipping container. If it is damaged, contact the shipper immediately for instructions. Save the box. Ifthere is no apparent damage, unpack the container. Be sure all items shown on the packing li...

8 MODEL 54eA SECTION 3.0 WIRING SECTION 3.0 WIRING 3.1 GENERAL WARNING Electrical installation must conform to the National Electrical Code, all state and local codes, and all plantcodes and standards for electrical equipment. Electrical installation and wiring must be done by qualifiedpersonnel. Th...

16 MODEL 54eA SECTION 4.0 DISPLAY AND OPERATION SECTION 4.0 DISPLAY AND OPERATION 4.1 GENERAL DESCRIPTION The 54eA analyzer/controller is a normally a singleinput, dual output instrument. It does, however, accepta second input for pH when the main measurement isfree chlorine. Figure 4-1 shows how th...

17 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION SECTION 5.0 SOFTWARE CONFIGURATION The instrument is configured at the factory to measure oxygen. Figure 5-1 is an outline of the menu structure. Table 5-1 lists the default settings and the range of choices available for each setting. To reduce the c...

24 5.1 CHANGING ALARM SETPOINTS 2. Press any key to enter the main menu. Move the cursor to "Program" and press Enter (F4). 3. Press Enter (F4). 4. Move the cursor to the desired alarm and press Enter (F4). 5. The screen appearing at this point depends on how the alarm was configured. 6. If ...

MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.2 RANGING THE OUTPUTS 2. Press any key to enter the main menu. Move the cursor to "Program" and press Enter (F4). 3. Move the cursor to "Output setpoints" and press Enter (F4). 4. Move the cursor to the desired output and press Enter (F...

26 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.3 CHANGING OUTPUT SETPOINTS (PID ONLY) 2. Press any key to enter the main menu. Move the cursor to "Program" and press Enter (F4). 3. Move the cursor to "Output setpoints" and press Enter (F4). 4. Move the cursor to the desired outpu...

MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.4 TESTING OUTPUTS AND ALARMS 2. Press any key to enter the main menu. Move the cursor to "Program"and press Enter (F4). 3. Move the cursor to "Simulated tests" and press Enter (F4). 4. Move the cursor to the desired output or alarm. Bot...

28 Output setpointsSimulated tests Configure Exit Enter MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.5 CHOOSING DISPLAY OPTIONS 3. Press any key to enter the main menu. Move the cursor to "Program"and press Enter (F4). 4. Move the cursor to "Configure" and press Enter (F4). 5. Wit...

30 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.6 CHANGING OUTPUT PARAMETERS 3. Press any key to enter the main menu. Move the cursor to "Program"and press Enter (F4). 4. Move the cursor to "Configure" and press Enter (F4). 5. Move the cursor to "Outputs" and press Enter (...

MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.6 CHANGING OUTPUT PARAMETERS (continued) e. The display returns to the “Output: Process” screen. Press Exit(F1). The display returns to the “Output Measurement” screen.Move the cursor to "Control mode" and press Enter (F4). f. Press Edit (F4). ...

32 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION Integral: Integral is the number of seconds over which devia- tions from the setpoint are integrated to remove continuing off-sets. Smaller values provide higher response. Derivative: Derivative is a form of control that resists all changes in reading...

MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.7 CHANGING ALARM PARAMETERS 3. Press any key to enter the main menu. Move the cursor to "Program"and press Enter (F4). 4. Move the cursor to "Configure" and press Enter (F4). 5. Move the cursor to "Alarms" and press Enter (F4). ...

34 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.7 CHANGING ALARM PARAMETERS (continued) c. To change the activation method, press Edit (F4). Use the key to scroll through the choices: "Process", "Temperature", and “pH”(if pH was enabled). "Process" means the measurement ma...

36 Feed limit : Disable Timeout: 3600 sec Exit Edit 1.000 ppm 26.2°C 12.0mA F e e d l i m i t a l a r m 1 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.7 CHANGING ALARM PARAMETERS (continued) Example: The setpoint is 3.00 ppm. The URV is +5.00 ppm and the LRV is 0.00 ppm. The time period is 30 sec...

MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.7 CHANGING ALARM PARAMETERS (continued) 11. Interval timer setup: Alarm 1, 2, or 3 can be used as an interval timer. The selected relay willopen and close at time intervals programmed by the user. The intervaltimer is useful for automatic cleaning of s...

38 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.8 CONFIGURING THE pH MEASUREMENT 1. Press any key to enter the main menu. Move the cursor to "Program" and press Enter (F4). 2. Move the cursor to "Configure" and press Enter (F4). 3. Move the cursor to “pH” and press Enter (F4). 4. ...

MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.8 CONFIGURING THE pH MEASUREMENT (continued) b. Move the cursor to "Diagnostics". Press Edit (F4) and use the key to change "Off" to "On". Press Save (F4). NOTE Choosing "On" means the controller will display pH diagnos-...

40 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.8 CONFIGURING THE pH MEASUREMENT (continued) Temp coeff : 0.000 Operate iso: 7.00 pHSensor iso: 7.00 pH Exit Enter Stabilize pH and Stabilize time: For the controller to accept cal- ibration data, the pH must remain within a specified range for aspe...

Temp comp : Auto Temp units: °C Exit Edit Temp comp: ManualTemp units: °C Temperature : 25.0°C Exit Edit MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.9 TEMPERATURE COMPENSATION AND TEMPERATURE UNITS 1. Refer to Section 6.1 for a discussion of the ways in which temperature affects amperometric and...

42 Noise rejection : 60 Hz Exit Edit MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.10 NOISE REDUCTION 1. For maximum noise reduction the frequency of the ac power must be entered into the analyzer. Temperature Noise rejection Main sensor cal Exit Enter 2. Press any key to enter the main menu. Move...

Stabilize : 0.050 ppm Stabilize time: 10 sec Exit Edit Stabilize: 0.050 ppmStabilize time: 10 sec Dual range cal : Disable Exit Edit Stabilize: 0.050 ppmStabilize time: 10 sec Salinity : 0.0 o/oo Exit Edit MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.11 MAIN SENSOR CALIBRATION PARAMETERS 1. Main ...

44 Bar meas : Auto Bar units: mm Hg Exit Edit MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.12 BAROMETRIC PRESSURE 1. The barometric pressure menu header appears only if an oxygen sensor (ppm or ppb level) is being used. Barometric pressure is used during air calibration. Noise rejection Barometri...

MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.13 SECURITY 1. The controller can be programmed to require a password for access to menus. There are three levels: Level 1: A level 1 user can 1. Zero and calibrate the main (amperometric) sensor 2. Calibrate the barometric pressure sensor 3. Calibrate...

46 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.14 CONTROLLER MODE PRIORITY The Model 54eA controller can function in differentmodes depending on both how it is configured, whatprocess conditions exist, and actions an operator mayhave made. To reconcile these possible modes, there isa set priorit...

47 MODEL 54eA SECTION 6.0 CALIBRATION - TEMPERATURE SECTION 6.0 CALIBRATION - TEMPERATURE 6.1 INTRODUCTION All four amperometric sensors (oxygen, ozone, free chlorine, total chlorine, and monochloramine) are membrane-covered sensors. As the sensor operates, the analyte (the substance to be determine...

48 6.2 TEMPERATURE CALIBRATION MODEL 54eA SECTION 6.0 CALIBRATION - TEMPERATURE 2. From the main display, press any key. 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. 3. Press the...

MODEL 54eA SECTION 7.0 CALIBRATION - DISSOLVED OXYGEN SECTION 7.0 CALIBRATION - DISSOLVED OXYGEN 7.1 INTRODUCTION As Figure 7-1 shows, oxygen sensors generate a current directly proportional to the concentration of dissolvedoxygen in the sample. Calibrating the sensor requires exposing it to a solut...

50 1. Place the sensor in a fresh solution of 5% sodium sulfite (Na 2 SO 3 ) in water. Be sure air bubbles are not trapped against the membrane. The current will drop rapidly at first and then gradually reach a stable zerovalue. To monitor the sensor current, go to the main display. Press any key to...

1. Remove the sensor from the process liquid. Use a soft tissue and a stream of water from a wash bottle to clean the membrane. Blot dry. The membrane must be dry during air calibration. 2. Pour some water in a beaker and suspend the sensor with the membrane about 0.5 inch (1 cm) above the water sur...

The analyzer and sensor can be calibrated against a standard instrument. For oxygen sensors installed in aera-tion basins in waste treatment plants, calibration against a second instrument is often preferred. For an accuratecalibration be sure that… 1. The standard instrument has been zeroed and cal...

54 1. If the barometric pressure measured by the controller does not agree with the local barometric pressure, cal- ibrate the pressure sensor. A pressure error of 3 mm Hg introduces an error of about 0.5% in the final meas-urement. When calibrating the pressure reading, be sure to use the actual ba...

MODEL 54eA SECTION 8.0 CALIBRATION - FREE CHLORINE SECTION 8.0 CALIBRATION - FREE CHLORINE 8.1 INTRODUCTION As Figure 8-1 shows, a free chlorine sensor generates a current directly proportional to the concentration of freechlorine in the sample. Calibrating the sensor requires exposing it to a solut...

56 1. Place the sensor in the zero standard (see Section 8.1). Be sure no air bubbles are trapped against the mem- brane. The sensor current will drop rapidly at first and then gradually reach a stable zero value. To monitor thesensor current, go to the main display. Press any key to obtain the main...

1. Place the sensor in the process liquid. If automatic pH correction is being used, calibrate the pH sensor (see Section 11.0) and place it in the process liquid. If manual pH correction is being used, measure the pH of the process liquid and enterthe value. See Section 5.8. Adjust the sample flow ...

58 MODEL 54eA SECTION 8.0 CALIBRATION - FREE CHLORINE Figure 8-2 shows the principle of dual slope cali-bration. Between zero and concentration C1, thesensor response is linear. When the concentrationof chlorine becomes greater than C1, the responseis non-linear. In spite of the non-linearity, there...

MODEL 54eA SECTION 8.0 CALIBRATION - FREE CHLORINE 7. Once the reading is stable, the screen at left appears. Sample the process liquid. Make a note of the reading before takingthe sample. Immediately determine free chlorine. Note the controllerreading again. If the present reading (X) differs from ...

60 MODEL 54eA SECTION 9.0 CALIBRATION - TOTAL CHLORINE SECTION 9.0 CALIBRATION - TOTAL CHLORINE 9.1 INTRODUCTION Total chlorine is the sum of free and combined chlorine. The continuous determination of total chlorine requires twosteps. See Figure 9-1. First, the sample flows into a conditioning syst...

1. Complete the startup sequence described in the SCS921 instruction manual. Adjust the sample flow to between 80 and 100 mL/min, and set the sample pressure to between 3 and 5 psig. 2. Remove the reagent uptake tube from the reagent bottle and let it dangle in air. The peristaltic pump will sim-ply...

62 1. If the sensor was just zeroed, place the reagent uptake tube back in the bottle. Once the flow of reagent starts, it takes about one minute for the sensor current to begin to increase. It may take an hour or longer for the reading to stabilize. Besure the sample flow stays between 80 and 100 m...

MODEL 54eA SECTION 9.0 CALIBRATION - TOTAL CHLORINE 9.4 DUAL SLOPE CALIBRATION Figure 9-3 shows the principle of dualslope calibration. Between zero and con-centration C1, the sensor response islinear. When the concentration of chlo-rine becomes greater than C1, theresponse is non-linear. In spite o...

MODEL 54eA SECTION 10.0 CALIBRATION - MONOCHLORAMINE SECTION 10.0 CALIBRATION - MONOCHLORAMINE 65 10.1 INTRODUCTION As Figure 10-1 shows, a monochloramine sensor generates a current directly proportional to the concentration ofmonochloramine in the sample. Calibrating the sensor requires exposing it...

66 MODEL 54eA SECTION 10.0 CALIBRATION - MONOCHLORAMINE 1. Place the sensor in the zero standard. 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, goto the main display....

MODEL 54eA SECTION 10.0 CALIBRATION - MONOCHLORAMINE 1. Place the sensor in the process liquid. Adjust the sample flow until it is within the range recommended for the sensor. Refer to the sensor instruction sheet. 2. Adjust the monochloramine concentration until it is near the upper end of the cont...

1. Place the sensor in the zero standard. 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, goto the main display. Press any key to obtain the main menu. Press the key on...

70 1. Place the sensor in the process liquid. Adjust the sample flow until it is within the range recommended for the sensor. Refer to the sensor instruction sheet. 2. Adjust the ozone concentration until it is near the upper end of the control range. Wait until the controller read-ing is stable bef...

72 4.02 pH Buf1done: 4.00 @25°C Abort Cont 4.02 pH Autocal buffer 1 Abort Cont Adjust temperature Calibrate pH Output trim Exit Enter Buffer calibration Standardize pHpH slope Exit Enter 1. Be sure the pH feature has been enabled. See Section 5.8. 2. Obtain two buffer solutions. Ideally the buffer p...

MODEL 54eA SECTION 12.0 CALIBRATION - pH 9. Remove the sensor from buffer 1, rinse it with water, and place it inbuffer 2. Swirl the sensor. Press Cont (F3). "Wait" flashes until thereading is stable. 10. The screen at left appears once the reading is stable. Use the or key to change the rea...

74 1. Be sure the pH feature has been enabled. See Section 5.8. 2. The controller comes from the factory set for automatic pH calibration. To do a manual calibration, the factory default setting must be changed. Refer to Section 5.8. 3. Obtain two buffer solutions. Ideally the buffer pH values shoul...

MODEL 54eA SECTION 12.0 CALIBRATION - pH 10. The screen at left appears if the pH reading in step 9 was changed. Press Pt2 (F3). Go to step 11. 11. Rinse the sensor and thermometer with water and place them in buffer 2. Be sure the glass bulb and junction are completely sub-merged. Swirl the sensor....

76 1. The pH measured by the controller can be changed to match the reading from a second or referee instrument. The process of making the two reading agree is called standardization, or one-point calibration. 2. During standardization, the difference between the two pH values is converted to the eq...

1. If the electrode slope is known from other measurements, it can be entered directly into the controller. The slope must be entered as the slope at 25°C. To calculate the slope at 25°C from the slope at temperature t°C,use the equation: slope at 25°C = (slope at t°C) Changing the slope overrides t...

78 MODEL 54eA SECTION 13.0 CALIBRATION - CURRENT OUTPUTS SECTION 13.0 CALIBRATION - CURRENT OUTPUTS 13.1 INTRODUCTION Although the controller outputs are calibrated at the factory, they can be trimmed in the field to match the readingfrom a standard current meter. Both the low output (0 or 4 mA) and...

79 MODEL 54eA SECTION 14.0 PID AND TPC CONTROL SECTION 14.0 PID AND TPC CONTROL 14.1 PID CONTROL (CODE -20) PID Control The Model 54eA current outputs can be programmedfor PID control. PID control is used with a controldevice that is capable of varying its output from 0 to100 percent in response to ...

MODEL 54eA SECTION 14.0 CALIBRATION - CONTROL 14.2 TIME PROPORTIONAL CONTROL (TPC) MODE (Code -20) In the TPC mode, you must establish the followingparameters which will determine how the Model54eA controller responds to your system (seeSection 5.7): • Setpoint • Time period • URV point (or 100% on)...

84 MODEL 54eA SECTION 15.0 TROUBLESHOOTING SECTION 15.0 TROUBLESHOOTING 15.1 OVERVIEW The 54eA controller continuously monitors itself and the sensor for faults. When the controller detects a fault in theamperometric or pH sensor or in the instrument itself it displays a fault message . If alarm 4 w...

86 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.2.8 Sense line open Most Rosemount Analytical sensors use a Pt100 or a Pt1000 in a three-wire configuration (see Figure 15-4). Thein and return leads connect the RTD to the measuring circuit in the analyzer. A third wire, called the sense line, isconnect...

MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.7 TROUBLESHOOTING WHEN NO ERROR MESSAGE IS SHOWING — MONOCHLORAMINE 15.7.1 Zero current is too high A. Is the sensor properly wired to the analyzer? See Section 3.3. B. Is the zero solution monochloramine-free? Take a sample of the solution and test it for ...

MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.8 TROUBLESHOOTING WHEN NO FAULT MESSAGE IS SHOWING - OZONE 15.8.1 Zero current is too high A. Is the sensor properly wired to the controller. See Section 3.3. B. Is the zero solution ozone free? Test the zero solution for ozone level. The concentration shou...

MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.9 TROUBLESHOOTING WHEN NO FAULT MESSAGE IS SHOWING - pH 15.9.1 Warning or error message during two-point calibration. Once the two-point (manual or automatic) calibration is complete, the controller automatically calculates the sen-sor slope (at 25°C). If t...

100 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.10 TROUBLESHOOTING NOT RELATED TO MEASUREMENT PROBLEMS Problem Action Display segments missing Replace display board Alarm relays are chattering 1. Check alarm setpoints.2. Increase hysteresis time delay settings (see Section 5.7) Incorrect current outp...

MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.12 SIMULATING INPUTS - OTHER AMPEROMETRIC MEASUREMENTS To check the performance of the controller, use a decade box and a battery to simulate the current from the sen-sor. The battery, which opposes the polarizing voltage, is necessary to ensure that the se...

MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.14 SIMULATING TEMPERATURE 15.14.1 General. The 54eA controller accepts either a Pt100 RTD (for pH,499ADO, 499ATrDO, 499ACL-01, 499ACL-02, 499ACL-03,and 499AOZ sensors) or a 22k NTC thermistor (for Hx438and Gx448 DO sensors and most steam-sterilizable DOsens...

104 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.15 MEASURING REFERENCE VOLTAGE Some processes contain substances that poison or shiftthe potential of the reference electrode. Sulfide is a goodexample. Prolonged exposure to sulfide converts the ref-erence electrode from a silver/silver chloride electr...

MODEL 54eA SECTION 16.0 MAINTENANCE SECTION 16.0 MAINTENANCE REPLACEMENT PARTS PART NUMBER DESCRIPTION 23540-05 Enclosure, Front with Keyboard 23848-00 Power Supply Circuit Board Shield 23849-00 Half Shield, Power Supply 23969-02 PCB, CPU and power supply, calibrated, 115/230 Vac 23969-06 PCB, CPU a...

MODEL 54eA SECTION 17.0 RETURN OF MATERIAL SECTION 17.0 RETURN OF MATERIAL 17.1 GENERAL. To expedite the repair and return of instruments, proper communication between the customer and the factory isimportant. Before returning a product for repair, call 1-949-757-8500 for a Return Materials Authoriz...