Emerson Rosemount 54eA Manual
  1. Manuals
  2. Brands
  3. Emerson Manuals
  4. Measuring Instruments
  5. Rosemount 54eA
  6. Manual
Emerson Rosemount 54eA Manual

Emerson Rosemount 54eA Manual

Amperometric hart analyzer/controller
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Emerson Rosemount 54eA Manual

Advertisement

Table of Contents
loading

Related Manuals for Emerson Rosemount 54eA

Summary of Contents for Emerson Rosemount 54eA

  • Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 2 Instruction Manual 51-54eA/rev.I April 2005 Model 54eA ® Amperometric HART Analyzer/Controller Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 3 11/01 This is the initial release of the product manual. The manual has been reformatted to reflect the Emerson documentation style and updated to reflect any changes in the product offering. 2/02 Revised wiring diagrams on pages 9, 11, & 13.
  • Page 4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 5: Table Of Contents

    MODEL 54eA TABLE OF CONTENTS MODEL 54eA ANALYZER/CONTROLLER TABLE OF CONTENTS Section Title Page SPECIFICATIONS....................Features and Applications ..................Specifications......................Ordering Information....................INSTALLATION....................... Unpacking and Inspection ..................Installation........................ WIRING ........................General ........................Power, Alarm, and Output Wiring ................Sensor Wiring ......................DISPLAY AND OPERATION...................
  • Page 6 MODEL 54eA TABLE OF CONTENTS TABLE OF CONTENTS (CONTINUED) Section Title Page CALIBRATION - TOTAL CHLORINE ..............Introduction ......................Zeroing the Sensor ....................Full Scale Calibration....................Dual Slope Calibration..................... 10.0 CALIBRATION - MONOCHLORAMINE ..............10.1 Introduction ......................10.2 Zeroing the Sensor ....................10.3 Full Scale Calibration....................
  • Page 7 MODEL 54eA TABLE OF CONTENTS LIST OF FIGURES Section Title Page Wall Mounting ......................Pipe Mounting......................Pipe and Wall Mounting Dimensions............... Panel Mounting......................Panel Mounting Dimensions..................Power Input and Relay Output Wiring for Model 54eA ........... Wiring Label......................Amperometric Sensors with Standard Cable............Amperometric Sensors with Optimum EMI/RFI Cable or Variopol Cable ....

  • Page 8: Specifications

    MODEL 54eA SECTION 1.0 SPECIFICATIONS SECTION 1.0 SPECIFICATIONS 1.1 FEATURES AND APPLICATIONS The analyzer has a rugged, weatherproof, corrosion- resistant enclosure (NEMA 4X and IP65) of epoxy- The Model 54eA Analyzer/Controller with the appro- painted aluminum. It is suitable for panel, pipe, or wall priate sensor monitors and controls dissolved oxy- mounting.

  • Page 9: Specifications

    MODEL 54eA SECTION 1.0 SPECIFICATIONS 1.2 SPECIFICATIONS - GENERAL Enclosure: Epoxy-painted (light gray) cast aluminum, Outputs: Two 4-20 mA or 0-20 mA isolated outputs. NEMA4X (IP65). 144 x 144 x 132 mm Continuously adjustable. Outputs can be assigned (5.7 x 5.7 x 5.2 in.), DIN size. to oxygen, chlorine, ozone, pH, or temperature.
  • Page 10 MODEL 54eA SECTION 1.0 SPECIFICATIONS RECOMMENDED pH SENSORS: SPECIFICATIONS — OXYGEN Measurement Range: 0-99 ppm (mg/L), 0-200% sat- Model 399-09-62, 399-14, and 399VP-09 uration See pH sensor product data sheet for complete ordering information. Resolution: 0.01 ppm, 0.1 ppb for 499A TrDO sen- Temperature correction for membrane permeabili- ty: automatic between 0 and 50°C (can be dis- SPECIFICATIONS —...

  • Page 11: Ordering Information

    MODEL 54eA SECTION 1.0 SPECIFICATIONS 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 air calibration of oxygen sensors.

  • Page 12: Installation

    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. If there is no apparent damage, unpack the container. Be sure all items shown on the packing list are present. If items are missing, notify Rosemount Analytical immediately.

  • Page 13: Wall Mounting

    MODEL 54eA SECTION 2.0 INSTALLATION 2.2.3 Pipe mounting FIGURE 2-2. Pipe Mounting WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH 9.52 .375 4 MOUNTING FRONT VIEW SIDE VIEW HOLES DWG. NO. REV. 40005402 PIPE MOUNTING PN 2002577 WALL MOUNTING FIGURE 2-3.

  • Page 14: Panel Mounting

    MODEL 54eA SECTION 2.0 INSTALLATION 2.2.4 Panel mounting FIGURE 2-4. Panel Mounting WHEN INCH AND METRIC DIMS 139.7 ARE GIVEN MILLIMETER 28.72 INCH 1.17 SIDE VIEW PANEL MOUNTING BRACK- ET WITH BOLTS, WASHERS SCREWS. 2 PLACES FRONT VIEW PANEL SUPPLIED BY OTHERS 137.9 5.43 BOTTOM VIEW...

  • Page 15: Wiring

    MODEL 54eA SECTION 3.0 WIRING SECTION 3.0 WIRING NOTE The Model 54eA analyzer leaves the factory configured for use with the Model 499ADO sensor (ppm dissolved oxygen). If a 499ADO sensor is NOT being used, turn to Section 5.5 and con- figure the transmitter for the desired measurement (ppb oxygen, oxygen measured using a steam-sterilizable sensor, free chlorine, total chlorine, monochloramine, or ozone) before wiring the sensor to the analyzer.

  • Page 16: Power Input And Relay Output Wiring For Model 54Ea

    MODEL 54eA SECTION 3.0 WIRING DWG. NO. REV. 454EPH02 FIGURE 3-1. Power Input and Relay Output Wiring for Model 54eA Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 17: Sensor Wiring

    MODEL 54eA SECTION 3.0 WIRING NOTE The Model 54eA analyzer leaves the factory configured for use with the Model 499ADO sensor (ppm dissolved oxygen). If a 499ADO sensor is not being used, turn to Section 5.5 and config- ure the analyzer for the desired measurement (ppb oxygen, oxygen measured using a steam- sterilizable sensor, free chlorine, total chlorine, monochloramine, or ozone) before wiring the sensor to the analyzer.

  • Page 18: Free Chlorine Sensor With Standard Cable And 399Vp-09 Ph Sensor Without

    MODEL 54eA SECTION 3.0 WIRING 3.3.3 Wiring 499ACL-01 (free chlorine) sensors and pH sensors for automatic pH correction. If free chlorine is being measured and the pH of the liquid varies more than 0.2 pH unit, a continuous correction for pH must be applied to the chlorine reading. Therefore, a pH sensor must also be wired to the 54eA controller. This section gives wiring diagrams for the pH sensors typically used.

  • Page 19: Free Chlorine Sensor With Standard Cable And 399-14 Ph Sensor Having Internal Preamplifier

    MODEL 54eA SECTION 3.0 WIRING DWG. NO. REV. 4054eA05 Although the blue wire is connect- ed to a terminal labeled solution ground, the blue wire does not connect to a solution ground in the sensor. The 399-14 sensor has no solution ground.

  • Page 20: Free Chlorine Sensor With Optimum Emi/Rfi Cable Or Variopol Cable And 399-14 Ph Sensor Having Internal Preamplifier

    MODEL 54eA SECTION 3.0 WIRING DWG. NO. REV. 4054eA02 FIGURE 3-8. Free chlorine sensor with optimum EMI/RFI cable or Variopol cable and 399VP-09 pH sensor without internal preamplifier. DWG. NO. REV. 4054eA06 Although the blue wire is connect- ed to a terminal labeled solution ground, the blue wire does not connect to a solution ground in the sensor.
  • Page 21 MODEL 54eA SECTION 3.0 WIRING DWG. NO. REV. 4054eA04 FIGURE 3-10. Free chlorine sensor with optimum EMI/RFI cable or Variopol cable and 399-09-62 pH sensor without internal preamplifier. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 22: Hx438 And Gx448 Sensors

    MODEL 54eA SECTION 3.0 WIRING 3.3.4 Wiring Hx438 and Gx448 sensors Hx438 and Gx448 steam-sterilizable dissolved oxygen sensors use a 22k NTC thermistor. The thermistor is wired to terminals 1 and 3 on TB5. DWG. NO. REV. 4054eA07 FIGURE 3-11. Hx438 and Gx448 sensors. Artisan Technology Group - Quality Instrumentation ...

  • Page 23: Display And Operation

    MODEL 54eA SECTION 4.0 DISPLAY AND OPERATION SECTION 4.0 DISPLAY AND OPERATION 4.1 GENERAL DESCRIPTION 4.3 KEY FUNCTIONS AND CONTROLS The keys labeled F1, F2, F3, and F4 are multi-function. The 54eA analyzer/controller is a normally a single The function appears in the main display just above the input, dual output instrument.

  • Page 24: Software Configuration

    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 chance of error when configuring the controller the first time, enter settings in the order shown in the table.
  • Page 25 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION TABLE 5-1. Program Settings List (continued) ITEM CHOICES FACTORY SETTINGS CONFIGURE A. Display options (Section 5.5) 1. Measurement Oxygen, ozone, free chlorine, total chlorine, monochloramine Oxygen 2. Sensor (Oxygen only) Rosemount standard, Rosemount biopharm, or Rosemount standard other steam sterilizable 3.
  • Page 26 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION TABLE 5-1. Program Settings List (continued) ITEM CHOICES FACTORY SETTINGS CONFIGURE (continued) C. Alarms (Section 5.7) (continued) 3. Alarm 1 setup (TPC) a. Setpoint if oxygen (ppm) -20 to 20 ppm 1 ppm if oxygen (ppb) -999 to 999 ppb 100 ppb if oxygen (% saturation)
  • Page 27 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION TABLE 5-1. Program Settings List (continued) ITEM CHOICES FACTORY SETTINGS CONFIGURE (continued) D. pH measurement (Section 5.8) 1. pH sensor Enable or disable Enable 2. pH compensation (free chlorine only) Auto or manual Auto 3.

  • Page 28: Menu Tree For The 54Ea Controller

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION FIGURE 5-1. Menu Tree for the 54eA Controller Main Calibrate Calibrate main sensor Menu Zero main sensor Adjust temperature Calibrate pH Buffer calibration Standardize Output trim Slope Main measurement Diagnostic Variables Main sensor current Sensitivity (μA/ppm) Zero current pH reading...
  • Page 29 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION FIGURE 5-1. Menu Tree for the 54eA Controller Calibrate (see page 21) (continued) Main Diagnostic Variable (see page 21) Menu Program Alarm Setpoints Alarms 1, 2, and 3 setpoints 4 mA or 0 mA Output setpoints 20 mA Present output current...
  • Page 30 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION FIGURE 5-1. Menu Tree for the 54eA Controller (continued) Main Calibrate (see page 21) Menu Diagnostic Variable (see page 21) Program Alarm Setpoints (see page 22) Output setpoints (see page 22) Simulated tests (see page 22) Configure Display (see page 22) Outputs (see page 22)

  • Page 31: Changing Alarm Setpoints

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.1 CHANGING ALARM SETPOINTS 1. Before changing alarm setpoints, be sure that alarms are properly configured. See Section 5.7. 2. Press any key to enter the main menu. Move the cursor to "Program" Alarm setpoints and press Enter (F4).

  • Page 32: Ranging The Outputs

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.2 RANGING THE OUTPUTS 1. Ranging the outputs means assigning values to the low (0 or 4 mA) and high (20 mA) outputs. Before rang- ing the outputs, be sure the outputs are properly configured. See Section 5.6. 2.

  • Page 33: Changing Output Setpoints (Pid Only)

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.3 CHANGING OUTPUT SETPOINTS (PID ONLY) 1. This section describes how to assign the setpoint and the upper and lower range values (URV and LRV) when the 54eA is being used for PID control. Assign the LRV to 4 mA and the URV to 20 mA. The LRV is the devi- ation from the setpoint that will result in a 4 mA output.

  • Page 34: Testing Outputs And Alarms

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.4 TESTING OUTPUTS AND ALARMS 1. For testing purposes, the controller can be programmed to generate simulated outputs and to activate and deactivate alarms. 2. Press any key to enter the main menu. Move the cursor to "Program" and press Enter (F4).

  • Page 35: Choosing Display Options

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.5 CHOOSING DISPLAY OPTIONS 1. The 54eA controller can be used with most amperometric sensors manufactured by Rosemount Analytical. The user must configure the analyzer to match the sensor being used. 2. The display menu also lets the user customize the third line in the display, change timeout values, choose a lan- guage other than English, and change the display contrast.
  • Page 36 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.5 CHOOSING DISPLAY OPTIONS (CONTINUED) 8. Set the remainder of the display parameters. Use the keys Temp units: °C to choose the desired parameter. Then press Edit (F4). Use the Output 1: mA key to move the cursor to the desired selection. Press Save (F4) to store.

  • Page 37: Changing Output Parameters

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.6 CHANGING OUTPUT PARAMETERS 1. This section describes how to configure the controller outputs. Outputs can be configured to represent the main amperometric measurement (oxygen, ozone, free chlorine, or total chlorine), temperature, or pH (if free chlorine is being measured and pH was enabled).
  • Page 38 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.6 CHANGING OUTPUT PARAMETERS (continued) e. The display returns to the “Output: Process” screen. Press Exit Ctrl mode : Normal (F1). The display returns to the “Output Measurement” screen. Move the cursor to "Control mode" and press Enter (F4). Press Edit (F4).
  • Page 39 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.6 CHANGING OUTPUT PARAMETERS (continued) 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 readings.

  • Page 40: Changing Alarm Parameters

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.7 CHANGING ALARM PARAMETERS 1. This section describes how to configure the controller alarms. Alarms 1, 2, and 3 can be assigned to the main amperometric measurement (oxygen, ozone, free chlorine, or total chlorine), temperature, or pH (if pH was enabled).
  • Page 41 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.7 CHANGING ALARM PARAMETERS (continued) c. To change the activation method, press Edit (F4). Use the Activate : Process to scroll through the choices: "Process", "Temperature", and “pH” (if pH was enabled). "Process" means the measurement made by the main sensor (oxygen, ozone, free chlorine, or total chlo- rine).

  • Page 42: Low Alarm

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.7 CHANGING ALARM PARAMETERS (continued) FIGURE 5-2. Low Alarm FIGURE 5-3. High Alarm 9. Alarm setup for TPC alarms: a. Move the cursor to the desired alarm setup and press Enter (F4). Alarm 1 control Alarm 1 setup Alarm 2 control Exit...
  • Page 43 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 seconds. When the concentration is 4.00 ppm, the relay will be on (4-3)/(5-0) = 20% of the time or 6 seconds.

  • Page 44: Interval Timer

    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 will open and close at time intervals programmed by the user. The interval timer is useful for automatic cleaning of sensors.

  • Page 45: Configuring The Ph Measurement

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.8 CONFIGURING THE pH MEASUREMENT NOTE pH is available only if the Model 54eA controller was configured to measure free chlorine. 1. Press any key to enter the main menu. Move the cursor to "Program" and press Enter (F4).
  • Page 46 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 Diagnostics : Off key to change "Off" to "On". Press Save (F4). Glass imp hi: 1000 MΩ NOTE Choosing "On"...
  • Page 47 MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.8 CONFIGURING THE pH MEASUREMENT (continued) Stabilize pH and Stabilize time: For the controller to accept cal- ibration data, the pH must remain within a specified range for a specified period of time. The default values are 0.01 pH for 10 sec- onds.

  • Page 48: Temperature Compensation And Temperature Units

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

  • Page 49: Noise Reduction

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

  • Page 50: Main Sensor Calibration Parameters

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.11 MAIN SENSOR CALIBRATION PARAMETERS 1. Main sensor refers to the amperometric sensor. 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.

  • Page 51: Barometric Pressure

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

  • Page 52: Security

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.13 SECURITY The controller can be programmed to require a password for access to menus. There are three levels: Level 1: A level 1 user can Zero and calibrate the main (amperometric) sensor Calibrate the barometric pressure sensor Calibrate the pH sensor Enter a temperature slope for a pH sensor Change temperature compensation from automatic to manual and enter a manual compensation temperature...

  • Page 53: Controller Mode Priority

    MODEL 54eA SECTION 5.0 SOFTWARE CONFIGURATION 5.14 CONTROLLER MODE PRIORITY The Model 54eA controller can function in different Priority is in the following order (from lowest to highest): modes depending on both how it is configured, what normal, fault, timer, hold, feed limit, test. Each output or process conditions exist, and actions an operator may relay acts as if it is only in the state of highest priority.

  • Page 54: Calibration - Temperature

    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 determined) diffuses through the mem- brane and is consumed at an electrode immediately behind the membrane.

  • Page 55: Temperature Calibration

    MODEL 54eA SECTION 6.0 CALIBRATION - TEMPERATURE 6.2 TEMPERATURE CALIBRATION Place the sensor and a standard thermometer in the process liquid. 1. Check the controller temperature reading (main display) to make sure the sensor has stabilized. Compare the controller temperature with the standard thermometer. The readings should differ by at most 1°C. If the read- ings differ by a greater amount, refer to Section 15.3.

  • Page 56: Calibration - Dissolved Oxygen

    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 dissolved oxygen in the sample. Calibrating the sensor requires exposing it to a solution containing no oxygen (zero stan- dard) and to a solution containing a known amount of oxygen (full-scale standard).

  • Page 57: Zeroing The Sensor

    MODEL 54eA SECTION 7.0 CALIBRATION - DISSOLVED OXYGEN 7.2 ZEROING THE SENSOR 1. Place the sensor in a fresh solution of 5% sodium sulfite (Na ) 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 zero value.

  • Page 58: Calibrating The Sensor In Air

    MODEL 54eA SECTION 7.0 CALIBRATION - DISSOLVED OXYGEN 7.3 CALIBRATING THE SENSOR IN AIR 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.
  • Page 59 MODEL 54eA SECTION 7.0 CALIBRATION - DISSOLVED OXYGEN 8. Press Exit (F1) four 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.

  • Page 60: Calibrating The Sensor Against A Standard Instrument

    MODEL 54eA SECTION 7.0 CALIBRATION - DISSOLVED OXYGEN 7.4 CALIBRATING THE SENSOR AGAINST A STANDARD INSTRUMENT 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 accurate calibration be sure that…...

  • Page 61: Calibrating Barometric Pressure

    MODEL 54eA SECTION 7.0 CALIBRATION - DISSOLVED OXYGEN 7.5 CALIBRATING BAROMETRIC PRESSURE 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.

  • Page 62: Calibration - Free Chlorine

    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 free chlorine in the sample. Calibrating the sensor requires exposing it to a solution containing no chlorine (zero stan- dard) and to a solution containing a known amount of chlorine (full-scale standard).

  • Page 63: Zeroing The Sensor

    MODEL 54eA SECTION 8.0 CALIBRATION - FREE CHLORINE 8.2 ZEROING THE SENSOR 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 the sensor current, go to the main display.

  • Page 64: Full Scale Calibration

    MODEL 54eA SECTION 8.0 CALIBRATION - FREE CHLORINE 8.3 FULL SCALE CALIBRATION 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 enter the value.

  • Page 65: Dual Slope Calibration

    MODEL 54eA SECTION 8.0 CALIBRATION - FREE CHLORINE 8.4 DUAL SLOPE CALIBRATION Figure 8-2 shows the principle of dual slope cali- bration. Between zero and concentration C1, the sensor response is linear. When the concentration of chlorine becomes greater than C1, the response is non-linear.
  • Page 66 MODEL 54eA SECTION 8.0 CALIBRATION - FREE CHLORINE 7. Once the reading is stable, the screen at left appears. 2.000 ppm Sample the process liquid. Make a note of the reading before taking the sample. Immediately determine free chlorine. Note the controller reading again.

  • Page 67: Calibration - Total Chlorine

    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 two steps. See Figure 9-1. First, the sample flows into a conditioning system (SCS 921) where a pump continuously adds acetic acid and potassium iodide to the sample.

  • Page 68: Zeroing The Sensor

    MODEL 54eA SECTION 9.0 CALIBRATION - TOTAL CHLORINE 9.2 ZEROING THE SENSOR 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.

  • Page 69: Full Scale Calibration

    MODEL 54eA SECTION 9.0 CALIBRATION - TOTAL CHLORINE 9.3 FULL SCALE CALIBRATION 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. Be sure the sample flow stays between 80 and 100 mL/min and the pressure is between 3 and 5 psig.

  • Page 70: Dual Slope Calibration

    MODEL 54eA SECTION 9.0 CALIBRATION - TOTAL CHLORINE 9.4 DUAL SLOPE CALIBRATION Figure 9-3 shows the principle of dual slope calibration. Between zero and con- centration C1, the sensor response is linear. When the concentration of chlo- rine becomes greater than C1, the response is non-linear.
  • Page 71 MODEL 54eA SECTION 9.0 CALIBRATION - TOTAL CHLORINE 7. Once the reading is stable, the screen at left appears. 2.000 ppm Sample the process liquid. Make a note of the reading before taking the sample. Immediately determine total chlorine. Note the controller reading again.

  • Page 72: Calibration - Monochloramine

    MODEL 54eA SECTION 10.0 CALIBRATION - MONOCHLORAMINE SECTION 10.0 CALIBRATION - MONOCHLORAMINE 10.1 INTRODUCTION As Figure 10-1 shows, a monochloramine sensor generates a current directly proportional to the concentration of monochloramine in the sample. Calibrating the sensor requires exposing it to a solution containing no monochlo- ramine (zero standard) and to a solution containing a known amount of monochloramine (full-scale standard).

  • Page 73: Zeroing The Sensor

    MODEL 54eA SECTION 10.0 CALIBRATION - MONOCHLORAMINE 10.2 ZEROING THE SENSOR 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, go to the main display.

  • Page 74: Full Scale Calibration

    MODEL 54eA SECTION 10.0 CALIBRATION - MONOCHLORAMINE 10.3 FULL SCALE CALIBRATION 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 control range. Wait until the con- troller reading is stable before starting the calibration.

  • Page 75: Calibration - Ozone

    MODEL 54eA SECTION 11.0 CALIBRATION - OZONE SECTION 11.0 CALIBRATION - OZONE 11.1 INTRODUCTION As Figure 11-1 shows, an ozone sensor generates a current directly proportional to the concentration of ozone in the sample. Calibrating the sensor requires exposing it to a solution containing no ozone (zero standard) and to a solution containing a known amount of ozone (full-scale standard).

  • Page 76: Zeroing The Sensor

    MODEL 54eA SECTION 11.0 CALIBRATION - OZONE 11.2 ZEROING THE SENSOR 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, go to the main display.

  • Page 77: Full Scale Calibration

    MODEL 54eA SECTION 11.0 CALIBRATION - OZONE 11.3 FULL SCALE CALIBRATION 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 before starting the calibration.

  • Page 78: Calibration - Ph

    MODEL 54eA SECTION 12.0 CALIBRATION - pH SECTION 12.0 CALIBRATION - pH 12.1 INTRODUCTION A new pH sensor must be calibrated before use. Regular recalibration is also necessary. A pH measurement cell (pH sensor and the solution to be measured) can be pictured as a battery with an extreme- ly high internal resistance.

  • Page 79: Automatic Two-Point Calibration

    MODEL 54eA SECTION 12.0 CALIBRATION - pH 12.2 AUTOMATIC TWO-POINT CALIBRATION 1. Be sure the pH feature has been enabled. See Section 5.8. 2. Obtain two buffer solutions. Ideally the buffer pH values should bracket the range of pH values to be meas- ured.
  • Page 80 MODEL 54eA SECTION 12.0 CALIBRATION - pH 9. Remove the sensor from buffer 1, rinse it with water, and place it in 10.02 buffer 2. Swirl the sensor. Press Cont (F3). "Wait" flashes until the reading is stable. Autocal buffer 2 Abort Cont 10.

  • Page 81: Manual Two-Point Calibration

    MODEL 54eA SECTION 12.0 CALIBRATION - pH 12.3 MANUAL TWO-POINT CALIBRATION 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.
  • Page 82 MODEL 54eA SECTION 12.0 CALIBRATION - pH 10. The screen at left appears if the pH reading in step 9 was changed. 4.00 Press Pt2 (F3). Go to step 11. Pt. 1 : 4.00pH 25.0°C Exit Pt 2 Edit 11. Rinse the sensor and thermometer with water and place them in 10.01 buffer 2.

  • Page 83: Standardization (One-Point Calibration)

    MODEL 54eA SECTION 12.0 CALIBRATION - pH 12.4 STANDARDIZATION (ONE-POINT CALIBRATION) 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.

  • Page 84: Ph Slope Adjustment

    MODEL 54eA SECTION 12.0 CALIBRATION - pH 12.5 pH SLOPE ADJUSTMENT 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) t°C + 273...

  • Page 85: Calibration - Current Outputs

    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 reading from a standard current meter. Both the low output (0 or 4 mA) and the high output (20 mA) can be trimmed. 13.2 TRIMMING THE OUTPUTS 1.

  • Page 86: Pid And Tpc Control

    MODEL 54eA SECTION 14.0 PID AND TPC CONTROL SECTION 14.0 PID AND TPC CONTROL 14.1 PID CONTROL (CODE -20) PID Control Mode Combinations All PID controllers have several control modes which PID Control can be used in various combinations: proportional plus The Model 54eA current outputs can be programmed integral (reset), proportional plus derivative (rate) and a for PID control.
  • Page 87 MODEL 54eA SECTION 14.0 CALIBRATION - CONTROL Proportional (Gain) Plus Integral (Reset) Process Reaction Curve Method For the automatic elimination of deviation, I (Integral A PID loop can be tuned using the process reaction mode), also referred to as Reset, is used. The propor- curve method.

  • Page 88: The Process Reaction Curve

    MODEL 54eA SECTION 14.0 CALIBRATION - CONTROL FIGURE 14-1. The Process Reaction Curve 6. When sufficient data have been collected, return A line is drawn on the process reaction curve tangent to the curve at point of maximum rise (slope) as shown the output signal to its original value using the sim- in Figure 14-1.
  • Page 89 MODEL 54eA SECTION 14.0 CALIBRATION - CONTROL concentration, temperature) compared to the measurement range, the difference between the 20 mA (Hi) and 4 (or 0) mA (Lo) setpoints, which you determined when configuring the analog output. In the example shown in Figure 14-1: The percent change in pH was: pH2 - pH1 8.2 - 7.2 pH...

  • Page 90: Time Proportional Control (Tpc)

    MODEL 54eA SECTION 14.0 CALIBRATION - CONTROL 14.2 TIME PROPORTIONAL CONTROL (TPC) MODE (Code -20) In the TPC mode, you must establish the following parameters which will determine how the Model 54eA controller responds to your system (see Section 5.7): •...

  • Page 91: Troubleshooting

    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 the amperometric or pH sensor or in the instrument itself it displays a fault message. If alarm 4 was enabled, the red FAIL LED will also light and relay 4 will activate.
  • Page 92 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.2.1 High input current Excessive sensor current implies that the amperometric sensor is miswired or the sensor has failed. Verify that wiring is correct, including connections through a junction box. See Section 3.3. If wiring is correct, try replacing the sensor.

  • Page 93: Troubleshooting When No Fault Message Is Showing - Temperature

    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). The in and return leads connect the RTD to the measuring circuit in the analyzer. A third wire, called the sense line, is connected to the return lead.
  • Page 94 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.4.1 Zero current is too high A. Is the sensor properly wired to the analyzer? See Section 3.3. B. Is the membrane completely covered with zero solution and are air bubbles not trapped against the mem- brane? Swirl and tap the sensor to release air bubbles.
  • Page 95 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.4.5 Barometric pressure reading is too high or too low. A. Is the pressure inside the enclosure equal to ambient pressure? The pressure sensor is inside the controller enclo- sure. When cable glands are in place and the front panel is tightly closed, the enclosure is moderately airtight. Therefore, as the air trapped in the enclosure heats or cools, the pressure inside the enclosure may be different from ambient.

  • Page 96: Troubleshooting When No Fault Message Is Showing - Free Chlorine

    MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.5 TROUBLESHOOTING WHEN NO FAULT MESSAGE IS SHOWING - FREE CHLORINE Problem See Section Zero current was accepted, but the current is outside the range -10 to 10 nA 15.5.1 Error or warning message appears while zeroing the sensor (zero current is too high) 15.5.1 Zero current is unstable 15.5.2...
  • Page 97 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.5.3 Sensor can be calibrated, but the current is too low A. Is the temperature low or is the pH high? Sensor current is a strong function of pH and temperature. The sen- sor current decreases about 3% for every °C drop in temperature. Sensor current also decreases as pH increases.

  • Page 98: Troubleshooting When No Fault Message Is Showing - Total Chlorine

    MODEL 54eA SECTION 14.0 TROUBLESHOOTING 15.5.6 Sensor does not respond to changes in chlorine level. A. Is the grab sample test accurate? Is the grab sample representative of the sample flowing to the sensor? B. Is the pH compensation correct? If the controller is using manual pH correction, verify that the pH value in the controller equals the actual pH to within ±0.1 pH.

  • Page 99: Troubleshooting When No Fault Message Is Showing - Monochloramine

    MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.7 TROUBLESHOOTING WHEN NO ERROR MESSAGE IS SHOWING — MONOCHLORAMINE Problem See Section Zero current was accepted, but the current is outside the range -10 to 50 nA 15.7.1 Error or warning message appears while zeroing the sensor (zero current is too high) 15.7.1 Zero current is unstable 15.7.2...
  • Page 100 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.7.3 Sensor can be calibrated, but the current is too low A. Is the temperature low? The sensor current decreases about 5% for every °C drop in temperature. B. Sensor current depends on the rate of sample flow past the sensor tip. If the flow is too low, monochloramine readings will be low.
  • Page 101 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.7.7 Readings are too low. A. Was the sample tested as soon as it was taken? Monochloramine solutions are moderately unstable. Test the sample immediately after collecting it. Avoid exposing the sample to sunlight. B. When was the sensor fill solution last replaced? The monochloramine sensor loses sensitivity, that is, it gen- erates less current per ppm of monochloramine, as it operates.

  • Page 102: Troubleshooting When No Fault Message Is Showing - Ozone

    MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.8 TROUBLESHOOTING WHEN NO FAULT MESSAGE IS SHOWING - OZONE Problem See Section Zero current was accepted, but the current is outside the range -10 to 10 nA 15.8.1 Error or warning message appears while zeroing the sensor (zero current is too high) 15.8.1 Zero current is unstable 15.8.2...
  • Page 103 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.8.4 Process readings are erratic A. Readings are often erratic when a new sensor or a rebuilt sensor is first placed in service. The current usual- ly stabilizes after a few hours. B. Is the sample flow within the recommended range? High sample flow may cause erratic readings. Refer to the sensor instruction sheet for recommended flow rates.

  • Page 104: Troubleshooting When No Fault Message Is Showing - Ph

    MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.9 TROUBLESHOOTING WHEN NO FAULT MESSAGE IS SHOWING - pH Problem See Section Warning or error message during two-point calibration 15.9.1 Warning or error message during standardization 15.9.2 Controller will not accept manual slope 15.9.3 Sensor does not respond to known pH changes 15.9.4 Calibration was successful, but process pH is slightly different from expected value...
  • Page 105 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.9.2 Warning or error message during two-point calibration. During standardization, the millivolt signal from the pH cell is increased or decreased until it agrees with the pH reading from a reference instrument. A unit change in pH requires an offset of about 59 mV. The controller limits the offset to ±1400 mV.
  • Page 106 MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.9.6 Calibration was successful, but process pH is grossly wrong and/or noisy. Grossly wrong or noisy readings suggest a ground loop (measurement system connected to earth ground at more than one point), a floating system (no earth ground), or noise being brought into the analyzer by the sensor cable. The problem arises from the process or installation.

  • Page 107: Troubleshooting Not Related To Measurement Problems

    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) 1. Verify that output load is less than 600 Ω. Incorrect current output 2.

  • Page 108: Simulating Inputs - Other Amperometric Measurements

    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 sensor current has the cor- rect sign.

  • Page 109: Simulating Inputs - Ph

    MODEL 54eA SECTION 15.0 TROUBLESHOOTING 15.13 SIMULATING INPUTS - pH 15.13.1 General This section describes how to simulate a pH input into the controller. To simulate a pH measurement, connect a standard millivolt source to the controller. If the controller is working properly, it will accurately measure the input voltage and convert it to pH.

  • Page 110: Simulating Temperature

    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 Hx438 and Gx448 DO sensors and most steam-sterilizable DO sensors from other manufacturers).

  • Page 111: Measuring Reference Voltage

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

  • Page 112: Maintenance

    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 and power supply, calibrated, 24 Vdc 33281-00 Hinge Pin 33286-00...

  • Page 113: Return Of Materials

    Carefully package the materials and enclose your “Letter of Transmittal” (see Warranty). If possible, pack the materials in the same manner as they were received. Send the package prepaid to: IMPORTANT Emerson Process Management Liquid Division Please see second section of “Return of 2400 Barranca Parkway Materials Request”...
  • Page 114 WARRANTY Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from defects in workman- ship and material under normal use and service for a period of twelve (12) months from the date of shipment by Seller. Consumables, pH electrodes, membranes, liquid junctions, electrolyte, O-rings, etc.
  • Page 115 ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE right now. http://www.raihome.com Specifications subject to change without notice. Credit Cards for U.S. Purchases Only. Emerson Process Management Liquid Division 2400 Barranca Parkway Irvine, CA 92606 USA Tel: (949) 757-8500 Fax: (949) 474-7250 http://www.raihome.com...
  • Page 116 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...

Table of Contents