Page 2 - ESSENTIAL INSTRUCTIONS; READ THIS PAGE BEFORE PROCEEDING!; Manual for future reference.; CAUTION; About This Document; Date
Emerson Process Management 2400 Barranca ParkwayIrvine, CA 92606 uSATel: (949) 757-8500Fax: (949) 474-7250 http://www.raihome.com © Rosemount Analytical Inc. 2014 ESSENTIAL INSTRUCTIONS READ THIS PAGE BEFORE PROCEEDING! Rosemount Analytical designs, manufactures, and tests its products to meet many ...
Page 3 - TABLE OF CONTENTS; Section Title; Continued on the following page
i MODEL 5081-P pH/ORP TABLE OF CONTENTS MODEL 5081-P pH/ORP TwO-wIRE TRANSMITTER TABLE OF CONTENTS Section Title Page 1.0 DESCRIPTION AND SPECIFICATIONS ................................................................ 1 1.1 Features and Applications......................................................
Page 4 - TABLE OF CONTENTS CONT’D; ii
MODEL 5081-P pH/ORP TABLE OF CONTENTS TABLE OF CONTENTS CONT’D ii 7.0 CALIBRATION OF pH MEASUREMENTS ............................................................. 69 7.1 General .................................................................................................................... 69 7....
Page 5 - iii
iii MODEL 5081-P pH/ORP TABLE OF CONTENTS TABLE OF CONTENTS CONT’D 12.0 TROUBLESHOOTING ........................................................................................... 109 12.1 Warning and Fault Messages .................................................................................. 1...
Page 6 - iv; LIST OF FIGURES; Number Title; Configuring Model 5081 Transmitter with F
iv MODEL 5081-P pH/ORP TABLE OF CONTENTS LIST OF FIGURES Number Title Page 1-1 Transmitter display during Calibration and Programming ....................................... 5 1-2 Infrared Remote Controller ....................................................................................... 5 1-3...
Page 7 - LIST OF FIGURES - CONT’D
v MODEL 5081-P pH/ORP TABLE OF CONTENTS LIST OF FIGURES - CONT’D Number Title Page 3-18 Wiring diagram for Model 320HP-10-55 .................................................................. 25 3-19 Wiring diagram for Model 320HP-10-58 ..................................................................
Page 9 - DESCRIPTION AND SPECIFICATIONS; • CHOICE OF COMMuNICATION PROTOCOL: HART; FEATURES AND APPLICATIONS
1 MODEL 5081-P pH/ORP SECTION 1.0 DESCRIPTION AND SPECIFICATIONS SECTION 1.0 DESCRIPTION AND SPECIFICATIONS • CHOICE OF COMMuNICATION PROTOCOL: HART ® or F OuNdATION Fieldbus. • LARGE, EASY-TO-REAd two-line display shows the process measurement and temperature.• SIMPLE MENu STRuCTuRE.• ROBuST TYPE 4...
Page 10 - OUNDATION
2 MODEL 5081-P pH/ORP SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 1.2 SPECIFICATIONS 1.2.1 GENERAL SPECIFICATIONS Housing: Cast aluminum with epoxy coating. Type 4X (IP65). Neoprene O-ring cover seals. Dimensions: 160.5 mm x 175.3 mm x 161.3 mm (6.3 in. x 6.9 in. x 6.4 in.) See drawing. Conduit Openi...
Page 11 - Digital Communications as applicable by model:; HAzARDOUS LOCATION APPROvAL; ATEx and IECEx Special Conditions for Use:; ATEx
Non-Incendive: Class I, div. 2, Groups A-ddust Ignition ProofClass II & III, div. 1, Groups E-GType 4X Enclosure Class I, div. 2, Groups A-dSuitable forClass II, div. 2, Groups E-GT4 Tamb = 70°C Explosion-Proof: Class I, div. 1, Groups B-dClass II, div. 1, Groups E-GClass III, div. 1 Class I, Gr...
Page 12 - CALIBRATION AND PROGRAMMING
4 1.4 TRANSMITTER DISPLAy DURINGCALIBRATION AND PROGRAMMING(FIGURE 1-1) 1. Continuous display of pH, ORP, conductivity, oxygen, chlorine, or ozone reading. 2. units: pH, mV, µS/cm, mS/cm, ppm, ppb, % saturation, or %. 3. Current menu section appears here. 4. Submenus, prompts, and diagnostic reading...
Page 13 - FIELDBUS; GENERAL SPECIFICATIONS; Number of Link Objects:
5 MODEL 5081-P pH/ORP SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 1.6 F OUNDATION FIELDBUS Figure 1-3 shows a 5081-P-FF being used to measure and control pH and chlorine levels in drinking water. The figure also shows three ways in which Fieldbus communication can be used to read process variables an...
Page 14 - HART COMMUNICATIONS; • Two Wire device Fieldbus Polarity Insensitive
MODEL 5081-P pH/ORP SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 1.8 HART COMMUNICATIONS 1.8.1 OvERvIEw OF HART COMMUNICATION HART (highway addressable remote transducer) is a digital communication system in which two frequencies are superim-posed on the 4 to 20 mA output signal from the transmitter. ...
Page 15 - ASSET MANAGEMENT SOLUTIONS; Fieldbus, which allows future upgrades to Fieldbus instruments.
7 MODEL 5081-P pH/ORP SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 4-20 mA + digital 250 ohm Control System Computer Model 5081-P Two-wire Transmitter Bridge Hand Held Communicator (“Configurator”) FIGURE 1-4. HART Communicators. Both the Rosemount Model 375 (or 475) and a computer can be used to comm...
Page 17 - INSTALLATION; the temperature element is a
9 MODEL 5081-P pH/ORP SECTION 2.0 INSTALLATION SECTION 2.0 INSTALLATION 2.1 Unpacking and Inspection 2.2 Pre-Installation Set Up 2.3 Orienting the Display Board 2.4 Mechanical Installation 2.5 Power Supply wiring 2.1 UNPACKING AND INSPECTION Inspect the shipping container. If it is damaged, contact ...
Page 19 - ORIENTING THE DISPLAy BOARD; Remove the three bolts holding the circuit board stack.; MECHANICAL INSTALLATION; NOTE
11 MODEL 5081-P pH/ORP SECTION 2.0 INSTALLATION 2.3 ORIENTING THE DISPLAy BOARD The display board can be rotated 90 degrees, clockwise or counterclockwise, from the original position. To reposition thedisplay: 1. Loosen the cover lock nut until the tab disengages from the circuit end cap. unscrew th...
Page 23 - POwER SUPPLy wIRING FOR
15 MODEL 5081-P pH/ORP SECTION 2.0 INSTALLATION 2.6 POwER SUPPLy wIRING FOR MODEL 5081-P-FF 2.6.1 Power Supply wiring. Refer to Figure 2-5 and Figure 2-6.Run the power/signal wiring through the opening nearest terminals 15 and 16. use shielded cable and ground the shield at the power supply. To grou...
Page 24 - wIRING; GENERAL INFORMATION; General Information
16 MODEL 5081-P pH/ORP SECTION 3.0 wIRING SECTION 3.0 wIRING 3.1 GENERAL INFORMATION pH and ORP sensors manufactured by Rosemount Analytical can be wired to the Model 5081-P pH/ORP transmitter in three ways:1. directly to the transmitter,2. to a sensor-mounted junction box and then to the transmitte...
Page 29 - before removing BNC and terminating cable.; and terminating cable. wiring diagram for
21 MODEL 5081-P pH/ORP SECTION 3.0 wIRING REMOVE BNC ANd TERMINATE COAXIAL CABLE BEFORE WIRING SENSOR TOTRANSMITTER. SEE FIGuRE 3-20. ALTERNATIVELY, uSE A BNC AdAPTER (PN9120531) OR ORdER MOdEL OPTION -62 (SENSOR WITH BNC REMOVEd ANdTERMINATIONS COMPATIBLE WITH 5081 pH/ORP). IF uSING A BNC AdAPTER,T...
Page 30 - wiring directly to the transmitter.
22 MODEL 5081-P pH/ORP SECTION 3.0 wIRING FIGURE 3-10. wire functions for Models 396R-50, 396R-54, 396R-54-61, 396P-02-50, 396P-02-54, 396P-02-55, 385+ -04, and 385+ -41-52. FIGURE 3-11. wiring diagram for Models 396R-50, 396R-54, 396R-54-61, 396P-02-50, 396P-02-54, 396P-02-55, 385+ -04, and 385+ -4...
Page 32 - FIGURE 3-16. wiring diagram for Models 328A and
24 MODEL 5081-P pH/ORP SECTION 3.0 wIRING FIGURE 3-15. wire functions for Model 328A-07. FIGURE 3-16. wiring diagram for Models 328A and 382+-02. dWG. NO. REV. 405081P20 A dWG. NO. REV. 405081P20 A FIGURE 3-17. wiring diagram for Model 385+-02. dWG. NO. REV. 45081P25 A
Page 36 - on
28 MODEL 5081-P pH/ORP SECTION 3.0 wIRING S E N S O R F L O w C H A R T (c on tin ue d on p ag e 31 ) S ee F lo w ch ar t o n p ag e 30 S ee F lo w ch ar t o n p ag e 29
Page 39 - INTRINSICALLy SAFE & ExPLOSION PROOF
MODEL 5081-P pH/ORP SECTION 4.0 INTRINSICALLy SAFE & ExPLOSION PROOF SECTION 4.0 INTRINSICALLy SAFE & ExPLOSION PROOF FIGURE 4-1. Model 5081-P-HT Infrared Remote Control — CSA, FM, & Baseefa/ATEx approvals FIGURE 4-2. Model 5081-P-FF Infrared Remote Control — CSA, FM, & Baseefa/ATEx ...
Page 56 - Un; IG
48 MODEL 5081-P pH/ORP SECTION 4.0 INTRINSICALLy SAFE & ExPLOSION PROOF W /O A GE NC Y AP PR OV AL RE VI SI ON S NO T PE RM IT TE D R E V R E V R E V R E V R E V R E V C E R T IF IE D B Y T H IS D O C U M E N T IS °C T a m b = 7 0 F M A 5/ 6/ 04 J. F LO C K 5/ 6/ 04 J. F LO C K .1 40 .1 25 1. 30...
Page 63 - OPERATION wITH INFRARED REMOTE CONTROLLER; Function Blocks; Fieldbus configuration device.; Transmitter with
55 MODEL 5081-P pH/ORP SECTION 5.0 OPERATION wITH REMOTE CONTROLLER SECTION 5.0 OPERATION wITH INFRARED REMOTE CONTROLLER 5.1 Overview5.2 Displays5.3 Infrared Remote Controller (IRC) - Key Functions5.4 Menu Tree - pH5.5 Diagnostic Messages - pH5.6 Menu Tree - ORP5.7 Diagnostic Messages - ORP5.8 Secu...
Page 64 - Temperature in °C or °F; OUNDATION fieldbus Function Blocks.
56 MODEL 5081-P pH/ORP SECTION 5.0 OPERATION wITH REMOTE CONTROLLER FIGURE 5-3. Program Display Screen The program display screen appears when calibrating, programming, or reading diagnostic messages. FIGURE 5-2. Process Display Screen The process display screen appears during normal operation. pH o...
Page 65 - the program screen to appear with the
57 MODEL 5081-P pH/ORP SECTION 5.0 OPERATION wITH REMOTE CONTROLLER 5.3 INFRARED REMOTE CONTROLLER (IRC) - KEy FUNCTIONS The infrared remote controller is used to calibrate and program the transmitter and to read diagnostic messages.See Figure 5-4 for a description of the function of the keys. Hold ...
Page 66 - CALIbrAtE; are; MENU; PROMPT
58 MODEL 5081-P pH/ORP SECTION 5.0 OPERATION wITH REMOTE CONTROLLER FIGURE 5-5. pH Menu Tree for Model 5081-P-HT 5.4 MENU TREE - pH The Model 5081-P pH transmitter has three menus: CALIBRATE, PROGRAM, and dIAGNOSE. under the Calibrate and Program menus are several sub-menus. For example, under CALIB...
Page 67 - PROGRAM; DIAGNOSE
MODEL 5081-P pH/ORP SECTION 5.0 OPERATION wITH REMOTE CONTROLLER FIGURE 5-6. pH Menu Tree for Model 5081-P-FF MENU Sub-menu PROMPT diag Message PROGRAM CALIBRATE GIMP 1000 5081-P-FF SoFt InPut 58.9 FAULtS nonE rIMP 10 dIAGnOStIC tEMP bUFFEr dISPLAy ISOPOtntAL LinE FrEq PAMP=trAnS CALIbrAtE Std tEMP ...
Page 68 - sub-menu contains the single
60 MODEL 5081-P pH/ORP SECTION 5.0 OPERATION wITH REMOTE CONTROLLER 5.6 MENU TREE - ORP The Model 5081-P ORP transmitter has three menus: CALIBRATE, PROGRAM, and dIAGNOSE. under the Calibrate and Program menus are several sub-menus. For example, under CALIBRATE, the sub-menus are Std (standard) and ...
Page 71 - OPERATION wITH MODEL 375; Connecting the Communicator; For intrinsically safe CSA and FM; FIGURE 6-1. Connecting the HART Communicator
MODEL 5081-P pH/ORP SECTION 6.0 OPERATION wITH MODEL 375 SECTION 6.0 OPERATION wITH MODEL 375 6.1 Note on Model 375 or 475 Communicator The Model 375 or 475 Communicator is a product of Emerson Process Management, Rosemount Inc. This sec-tion contains selected information on using the Model 375 or 4...
Page 72 - Operation; Fieldbus communicator is on page 69.; Program
64 6.3 Operation 6.3.1 Off-line and On-line Operation The Model 375 Communicator features off-line and on-line communications. On-line means the communicator isconnected to the transmitter in the usual fashion. While the communicator is on line, the operator can view meas-urement data, change progra...
Page 76 - device information
68 MODEL 5081-P pH/ORP SECTION 6.0 OPERATION wITH MODEL 375 device information distributorModeldev idTagdateWrite protectSnsr textdescriptorMessageRevision #'s universal revFld dev revSoftware rev Hardware rev Local display AO LOI units [mA, %] LOI cfg codeLOI cal code Noise rejectionLoad default Co...
Page 77 - CALIBRATION OF pH MEASUREMENTS; HoLd
69 MODEL 5081-P pH/ORP SECTION 7.0 CALIBRATION OF pH MEASUREMENTS SECTION 7.0 CALIBRATION OF pH MEASUREMENTS 7.1 General 7.2 Entering and Leaving the Calibrate Menu 7.3 Using the Hold Function 7.4 Temperature Calibration 7.5 Auto Calibration 7.6 Manual Calibration 7.7 Making the Transmitter Reading ...
Page 78 - tEMP AdJ; tEMP; TEMPERATURE CALIBRATION; A new sensor seldom requires temperature calibration.; Enter the CALIBRATE menu by pressing CAL on the IRC. The; bath is required for this step.
70 CALIBRATE tEMP AdJ EXIT NEXT ENTER CALIBRATE tEMP EXIT ENTER 0 2 5 . 0 MODEL 5081-P pH/ORP SECTION 7.0 CALIBRATION OF pH MEASUREMENTS 7.4 TEMPERATURE CALIBRATION 7.4.1 Purpose 1. As discussed in Section 13.6, Glass Electrode Slope, measuring tempera- ture is an important part of measuring pH. The...
Page 79 - AUTO CALIBRATION; mon pitfalls and reduces errors.
71 7.5 AUTO CALIBRATION 7.5.1 Purpose 1. New sensors must be calibrated before use. Regular recalibration is also necessary.2. The use of auto calibration instead of manual calibration is strongly recommended. Auto calibration avoids com- mon pitfalls and reduces errors. 3. For more information abou...
Page 80 - CAL bF 1; CAL bF 2
72 7.5.4 Procedure 1. Verify that auto calibration is activated. Identify the buffers being used and set the stability limits. 2. Enter the CALIBRATE menu by pressing CAL on the IRC. The CALIbrAtE sub-menu appears (pic- tured above left). 3. At the CALIbrAtE sub-menu, press ENTER . The CAL bF1 promp...
Page 81 - MANUAL CALIBRATION
73 MODEL 5081-P pH/ORP SECTION 7.0 CALIBRATION OF pH MEASUREMENTS 7.6.1 Purpose 1. New sensors must be calibrated before use. Regular recalibration is also necessary.2. Manual calibration is an alternative to auto calibration. Because auto calibration eliminates many common calibra- tion errors, it ...
Page 83 - MAKING THE TRANSMITTER READING MATCH A SECOND pH METER (STAN-; rOFFSt
75 MODEL 5081-P pH/ORP SECTION 7.0 CALIBRATION OF pH MEASUREMENTS 7.7 MAKING THE TRANSMITTER READING MATCH A SECOND pH METER (STAN- DARDIzATION). 7.7.1 Purpose 1. This section describes how to make the transmitter reading match the reading from a second pH meter. The measurement made with the second...
Page 84 - Std
76 MODEL 5081-P pH/ORP SECTION 7.0 CALIBRATION OF pH MEASUREMENTS CALIBRATE Std EXIT NEXT ENTER CALIBRATE SLOPE EXIT NEXT ENTER CALIBRATE Std EXIT NEXT ENTER 08 .00 5 9 . 0 0 7.7.3 Procedure 1. Enter the CALIBRATE menu by pressing CAL on the IRC. The CALibrAtE sub-menu appears (pictured above left)....
Page 85 - PROGRAMMING FOR pH MEASUREMENTS
77 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.1 General 8.2 Entering and Leaving the Program Menu 8.3 Output Ranging 8.4 Diagnostic Parameters 8.5 Temperature Related Settings 8.6 Display Units 8.7 Buffer Calibration Parameters 8.8 I...
Page 86 - ITEM
78 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS ITEM MNEMONIC DISPLAy LIMITS FACTORy SETTINGS USER SETTINGS PROGRAM LEvEL (Sections 8.0 - 8.9). A. Output Range (Section 8.3) OutPut (for 5081-P-HT only) 1. 4 mA Output 0 - 14 pH 0.00 pH _______ 2. 20 mA Output: 0 - 14 pH 14.00 pH __...
Page 87 - This section describes how to do the following:
MODEL 5081-P PH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.3 OUTPUT RANGING 8.3.1 Purpose This section describes how to do the following: 1. assign pH values to the 4 and 20 mA outputs, 2. set the output current generated by the transmitter during hold, 3. set the output current generated by ...
Page 88 - DIAGNOSTIC PARAMETERS; FIGURE 8-1. Suggested Glass Impedance warning and Failure Limits
80 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.4 DIAGNOSTIC PARAMETERS 8.4.1 Purpose This section describes how to do the following:1. change the standardization or reference offset,2. enable and disable sensor diagnostics,3. enable and disable glass impedance temperature compe...
Page 89 - WARNING ANd FAILuRE LIMITS FOR; FIGURE 8-2. Suggested warning and Failure Limits for Low
81 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 4. REFERENCE IMPEdANCE. The majori- ty of reference electrodes used in indus-try are low impedance silver-silver chlo-ride electrodes. Every pH and ORP sen-sor manufactured by RosemountAnalytical has a low impedance refer-ence. Howev...
Page 90 - WJ; O N
82 8.4.3 Procedure 1. Press PROG on the infrared remote controller (IRC). 2. Press NEXT until the diAGnOStIC sub-menu appear. Press ENTER . 3. The screen displays the rOFFSt prompt. use the editing keys to change the flashing display to the desired standardization (reference) offset (in millivolts)....
Page 91 - rFH; rWJH; rWJL; rFL
83 12. The rFH prompt appears. use the editing keys to change the display to the desired ref- erence electrode high impedance fault value. The allowed ranges are Type of reference electrode Allowed range Low impedance ( LO in step 11) 0 - 2000 kilohms High impedance ( HI in step 11) 0 - 2000 megohms...
Page 92 - TEMPERATURE RELATED SETTINGS
84 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.5 TEMPERATURE RELATED SETTINGS 8.5.1 Purpose This section describes how to do the following: 1. activate and deactivate automatic temperature compensation, 2. set a manual temperature compensation value, 3. match the transmitter to...
Page 93 - tAUtO; tMAn
85 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.5.3 Procedure 1. Press PROG on the infrared remote controller (IRC). 2. Press NEXT until the tEMP sub-menu appears in the display. Press ENTER . 3. The screen displays the tAUTO prompt. Press é or ê to enable ( On ) or disable ( OF...
Page 94 - OUtPUt; CODE; tYPE; dISPLAY
86 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.6 DISPLAy UNITS 8.6.1 Purpose This section describes how to do the following: 1. switch the process display units between pH and ORP (millivolts), 2. select °C or °F for the temperature display, 3. select percent of full scale or m...
Page 95 - BUFFER CALIBRATION PARAMETERS
87 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.7 BUFFER CALIBRATION PARAMETERS 8.7.1 Purpose This section describes how to do the following: 1. activate or deactivate auto calibration, 2. identify which buffers will be used during auto calibration, 3. set the stability criteria...
Page 96 - bAUtO; bUFFEr; tIME; pH
88 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 3. STABILITY CRITERIA. For the Model 5081-P pH/ORP transmitter to accept calibra- tion data, the pH must remain within a specified range for a specified period of time. The default values are 0.02 pH units and 10 seconds. In other wo...
Page 97 - ISOPOTENTIAL PARAMETERS
89 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.8 ISOPOTENTIAL PARAMETERS 8.8.1 Purpose This section describes how to do the following: 1. convert the pH at the measurement temperature to the pH at a reference temperature by entering a solution temperature coefficient, 2. change...
Page 98 - Snr; ISOPOtntAL; tCOEFF; ISO
90 MODEL 5081-P pH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.8.3 Procedure 1. Press PROG on the infrared remote controller (IRC). 2. Press NEXT until the ISOPOtntAL sub-menu appears. Press ENTER . 3. The screen displays the tCOEFF prompt. use the editing keys to change the display to the des...
Page 99 - tESt; dPn
PROGRAM tESt EXIT ENTER 1 2 . 0 0 PROGRAM dPn EXIT ENTER 0 0 0 MODEL 5081-P PH/ORP SECTION 8.0 PROGRAMMING FOR pH MEASUREMENTS 8.9 GENERATING A TEST CURRENT (for 5081-P-HT only) 8.9.1 Purpose This section describes how to generate output currents for testing recorders and data han-dling systems. 8.9...
Page 100 - CALIBRATION OF ORP MEASUREMENTS; To activate or deactivate Hold, do the following:; prompt appears in the display. Press; On; and; OFF
92 MODEL 5081-P pH/ORP SECTION 9.0 CALIBRATION OF ORP MEASUREMENTS SECTION 9.0 CALIBRATION OF ORP MEASUREMENTS 9.1 General 9.2 Entering and Leaving the Calibrate Menu 9.3 Using the Hold Function 9.4 Temperature Calibration 9.5 Standardization 9.1 GENERAL The Calibrate menu allows the user to calibra...
Page 101 - TEMPERATURE CALIBRATION
93 CALIBRATE tEMP AdJ EXIT NEXT ENTER CALIBRATE tEMP EXIT ENTER 0 2 5 . 0 9.4 TEMPERATURE CALIBRATION 9.4.1 Purpose 1. As discussed in Section 14.6 (ORP, Concentration, and pH), ORP is a function of temperature. The accuracy of a new sensor/transmitter loop is about ±1°C, which is adequate for most ...
Page 102 - Preparation of ORP Standard Solutions
94 9.5.3 Procedure 1. Place the transmitter in ORP mode. See Section 10.5.1, steps 1 - 3. After selecting and saving OrP , press EXIT twice to return to the main display. 2. Enter the CALIBRATE menu by pressing CAL on the IRC. The Std sub- menu appears. 3. Rinse the sensor with deionized water and p...
Page 103 - ENTERING AND LEAvING THE PROGRAM MENU; screen to; PROGRAMMING FOR ORP MEASUREMENTS
95 10.1 GENERAL This section describes how to do the following:1. assign ORP values to the 4 and 20 mA outputs (for Model 5081-P-HT only), 2. set the current generated by the transmitter during hold (for Model 5081-P-HT only),3. set the current generated by the transmitter when a fault is detected (...
Page 106 - OutPut
98 MODEL 5081-P pH/ORP SECTION 10.0 PROGRAMMING FOR ORP MEASUREMENTS 10.3.3 Procedure 1. Enter the Program menu by pressing PROG on the IRC. The OutPut sub-menu appears. 2. Press ENTER. The screen displays the 4 MA prompt. use the editing keys to change the displayed number to the desired ORP. The a...
Page 107 - TEMPERATURE ELEMENT; a. three and four wire 100 ohm platinum RTds; sub-menu appears in the display. Press
99 MODEL 5081-P pH/ORP SECTION 10.0 PROGRAMMING FOR ORP MEASUREMENTS 10.4 TEMPERATURE ELEMENT 10.4.1 Purpose This section describes how to match the transmitter to the type of temperatureelement in the ORP sensor. 10.4.2 Definition TEMPERATuRE ELEMENT: ORP sensors use a variety of temperature ele-me...
Page 109 - DIAGNOSTIC PARAMETERS; FIGURE 10-1. Suggested warning and Failure Limits
MODEL 5081-P pH/ORP SECTION 10.0 PROGRAMMING FOR ORP MEASUREMENTS 10.6 DIAGNOSTIC PARAMETERS 10.6.1 Purpose This section describes how to do the following:1. change the standardization (reference) offset, 2. enable and disable sensor diagnostics, 3. enable and disable glass impedance temperature com...
Page 110 - L O
102 MODEL 5081-P pH/ORP SECTION 10.0 PROGRAMMING FOR ORP MEASUREMENTS PROGRAM rEF EXIT ENTER L O PROGRAM IMPtC EXIT NEXT ENTER O N PROGRAM rOFFSt EXIT ENTER PROGRAM dIAGnOSTIC EXIT NEXT ENTER 0 6 0 PROGRAM dIAG EXIT ENTER O F F 10.6.3 Procedure 1. Press PROG on the infrared remote controller (IRC). ...
Page 111 - wj
MODEL 5081-P pH/ORP SECTION 10.0 PROGRAMMING FOR ORP MEASUREMENTS 8. The rwH prompt appears. In the display, W appears as wj . use the editing keys to change the display to the desired reference electrode high impedancewarning value. The allowed ranges are Type of reference electrode Allowed range L...
Page 113 - MAINTENANCE; TRANSMITTER MAINTENANCE
105 MODEL 5081-P pH/ORP SECTION 11.0 MAINTENANCE SECTION 11.0 MAINTENANCE 11.1 OvERvIEw This section gives general procedures for routine maintenance of the 5081-P pH/ORP transmitter and pH andORP sensors. The transmitter needs almost no routine maintenance. Sensors require periodic inspection andcl...
Page 114 - Loose scale or debris; pH SENSOR MAINTENANCE
106 MODEL 5081-P pH/ORP SECTION 11.0 MAINTENANCE TABLE 11-1. Replacement Parts for Model 5081-P pH/ORP Transmitter PROBLEM CLEANING SUGGESTIONS Loose scale or debris use a stream of water from a wash bottle to rinse away solids from the tip of the sensor. If water does not work, gently wipe the glas...
Page 115 - Rejuvenating Reference Electrodes; NOT BOILING; solution by dissolving 3 g of potassium chloride in 100 mL of water.; FIGURE 11-1. Checking the Potential of the Reference Electrode.
107 When using acid or alkaline solvents, be careful to keep the solvent away from the liquid junction. If the cleaning sol-vent contacts the junction, hydrogen ions (acid solvent) or hydroxide ions (alkaline solvent) will diffuse into the junc-tion. Because hydrogen and hydroxide ions have much gre...
Page 116 - ORP SENSOR MAINTENANCE; ibration at the same interval.
108 11.4 ORP SENSOR MAINTENANCE 11.4.1 Frequency of Cleaning The frequency at which an ORP sensor should be inspected and cleaned can be determined only by experience. If theprocess liquid coats or fouls the sensor, frequent cleaning may be necessary. If the process does not contain a high levelof s...
Page 117 - TROUBLESHOOTING; when a wARNING condition exists:
109 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING SECTION 12.0 TROUBLESHOOTING 12.1 wARNING AND FAULT MESSAGES 12.2 CALIBRATION ERRORS 12.3 TROUBLESHOOTING - GENERAL 12.4 TROUBLESHOOTING wHEN A DIAGNOSTIC MESSAGE IS SHOwING 12.5 TROUBLESHOOTING wHEN NO DIAGNOSTIC MESSAGE IS SHOwING 12.6 SySTEMATI...
Page 118 - CALIBRATION ERRORS; Std Err; TROUBLESHOOTING wHEN A DIAGNOSTIC MESSAGE IS SHOwING; MESSAGE
110 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING 12.2 CALIBRATION ERRORS If an error occurs during calibration, an error message appears in the main display, and the transmitter does not updatethe calibration. The calibration errors are Std Err , SLOPE Err LO , and SLOPE Err HI . See Section 12....
Page 124 - If the measured resistances are acceptable, go to step C.; Temperature
116 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING B. Check the sensor. Refer to the wiring diagrams in Section 3.0 to identify the RTd leads. disconnect the RTd leads and measure theresistances shown in Figure 12-3. The measured resistance should agree with the value in Table 12-1 to within about...
Page 125 - LInE FAIL; If the message is still showing go to step B.; FIGURE 12-4. Temperature simulation into
117 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING C. Check the transmitter. 1. disconnect the RTd sensor leads and wire the circuit shown in Figure 12-4. Set the resistance to the value for 25°C shown in Table 12-1. The measured temperature should equal 25°C to within ±1°C. If the measured temper...
Page 126 - InPUt wArn
118 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING B. The RTd sense or the RTd return wire inside the sensor cable may be broken. Keep the sensor wires attached and jumper TB-3 and TB-4. If the diagnostic message disappears, either the RTd return or RTd sense wire is broken. To verify a broken wir...
Page 127 - SLOPE Err LO
119 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING 12.4.9 SLOPE Err LO SLOPE Err LO means that a two-point buffer calibration attempt has failed. The slope is too low (<40 mV/pH) for a good measurement. Troubleshooting Flowchart-SLOPE Err LO A. Repeat the calibration. 1. Inaccurate buffers can ...
Page 128 - SLOPE Err HI
120 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING 12.4.10 SLOPE Err HI SLOPE Err HI means that a two-point buffer calibration attempt has failed. The slope is too high (>62 mV/pH) for a good measurement. Troubleshooting Flowchart-SLOPE Err HI A. Repeat the calibration. 1. Inaccurate buffers ca...
Page 130 - TROUBLESHOOTING wHEN NO DIAGNOSTIC MESSAGE IS SHOwING
122 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING SyMPTOM SECTION Id 000 appears in display when trying to program or calibrate transmitter 12.5.1 Error message flashing in display 12.4 Transmitter does not respond to remote controller 12.5.2 Calibration Problems: SLOPE Err HI or SLOPE Err LO app...
Page 131 - A. Be sure the transmitter is receiving the signal.
123 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING 12.5.1 Id 000 in Display A security code has been programmed into the transmitter. The correct code must be entered before the transmittercan be programmed or calibrated. To retrieve a lost security code see Section 5.8. To change the security cod...
Page 132 - pH Reading in Buffer Drifts During Manual Calibration; Replace the sensor. A clean pH sensor should not drift in buffer.; Sensor Does Not Respond To Known pH Changes; If a spare sensor is available, check the spare.; GIMP; If the impedance is greater than about 20 megohm, go to step d.
124 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING 12.5.5 pH Reading in Buffer Drifts During Manual Calibration A. Allow adequate time for the temperature of the sensor to reach the temperature of the buffer. If the sensor was in a process substantially hotter or colder than the buffer, allow at l...
Page 134 - 4 Transmitter Periodically Restarts Itself
126 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING 12.5.9 Temperature Reading Is Inaccurate A. To troubleshoot temperature problems refer, to Section 12.4.6.B. To calibrate the temperature response of the sensor, refer to Section 6.4.C. If necessary, automatic temperature compensation can be tempo...
Page 135 - DISPLAyING DIAGNOSTIC vARIABLES
127 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING 12.6 DISPLAyING DIAGNOSTIC vARIABLES 12.6.1 Purpose This section describes how to display the diagnostic variables listed below: DIAGNOSTIC MEASUREMENTS DIAGNOSTIC MESSAGES 1. Sensor voltage in mV ( InPut ) 1. Software version ( vEr ) 2. Glass imp...
Page 136 - pH Simulation when the Preamplifier Is Located in the; Junction Box or in a Sensor-Mounted Junction Box.; Preamplifier Is Located in the Transmitter.
128 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING 12.7.2 pH Simulation when the Preamplifier Is Located in the Transmitter. 1. Program PAMP to "transmitter". See Section 5.0. 2. Turn off sensor diagnostics. See Section 8.3. 3. Turn off automatic temperature compensation. Set manual tem- p...
Page 137 - FIGURE 12-7. Simulate pH through Model 381+ Sensor Preamplifier
129 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING FIGURE 12-7. Simulate pH through Model 381+ Sensor Preamplifier dWG. NO. REV. 40381+05 A 12.7.4 pH Simulation with the Model 381+ Sensor 1. Verify that switch S-1 is set to "sensor or junction box". See Section 2.2. 2. Turn off sensor diag...
Page 138 - THE WIRE TOuCH THE OuTSIdE OF THE BNC CONNECTOR.; pH Simulation when Preamplifier is in Sensor; FACTORy ASSISTANCE AND REPAIRS
130 MODEL 5081-P pH/ORP SECTION 12.0 TROUBLESHOOTING 10. Touch the other end of the second jumper to the center pin of the BNC connector on the preamplifier. dO NOT LET THE WIRE TOuCH THE OuTSIdE OF THE BNC CONNECTOR. 11. Measure the voltage. The measured voltage should be 0 mV, and the pH should be...
Page 140 - MEASURING ELECTRODE; For the glass electrode to work, the glass must be hydrat-
132 MODEL 5081-P pH/ORP SECTION 13.0 pH MEASUREMENTS designed, the liquid junction potential is usually small and rel-atively constant. All three potentials depend on temperature.As discussed in Sections 13.5 and 13.6, the factor relatingthe cell voltage to pH is also a function of temperature.The c...
Page 141 - LIQUID JUNCTION POTENTIAL; The fixed concentration of chloride inside the electrode
133 MODEL 5081-P pH/ORP SECTION 13.0 pH MEASUREMENTS FIGURE 13-5. The Origin of Liquid Junction Potentials. The figure shows a thin section through a pore in the junction plug. The junction separates a solution of potassium chloride onthe left from a solution of hydrochloric acid on the right. The s...
Page 142 - GLASS ELECTRODE SLOPE; The voltage of a pH measurement cell depends on pH and
134 MODEL 5081-P pH/ORP SECTION 13.0 pH MEASUREMENTS The second term, 0.1984 T pH, is the potential (in mV) at the outside surface of the pH glass. This potential depends on temperature and on the pH of the sample. Assuming temperature remains constant, any change in cell voltage is caused solely by...
Page 143 - ISOPOTENTIAL pH
135 MODEL 5081-P pH/ORP SECTION 13.0 pH MEASUREMENTS are placed in pH 10 buffer, the cell voltage is V 10 . Note that V 7 is not 0 mV as would be expected in an ideal sensor, but is slightly different. The microprocessor calculates the equation of the straight line connecting the points. The general...
Page 144 - PREAMPLIFIERS
136 MODEL 5081-P pH/ORP SECTION 13.0 pH MEASUREMENTS term in equation 4 to the voltage is also shown. The liquid junction potentials in the buffers are assumed to be equal and are exaggerated for clarity.If the liquid junction potential in the sample differs from the buffers, a measurement error res...
Page 145 - ORP MEASUREMENTS
137 MODEL 5081-P pH/ORP SECTION 14.0 ORP MEASUREMENTS SECTION 14.0 ORP MEASUREMENTS 14.1 General14.2 Measuring Electrode14.3 Reference Electrode14.4 Liquid Junction Potential14.5 Relating Cell voltage to ORP14.6 ORP, Concentration, and pH14.7 Interpreting ORP Measurements14.8 Calibration 14.1 GENERA...
Page 147 - RELATING CELL vOLTAGE TO ORP; Fe
139 Liquid junction potentials exist whenever dissimilar elec-trolyte solutions come into contact. The magnitude of thepotential depends on the difference between the mobility ofthe ions. Although liquid junction potentials cannot be elim-inated, they can be made small and relatively constant. Asmal...
Page 148 - INTERPRETING ORP MEASUREMENTS; • ORP measures activity, not concentration. Activity; FIGURE 14-6. ORP Measurement Interpretation
140 is described by the following equation, called theNernst equation: E = E° - (2) In the Nernst equation, E is the electrode potential andE° is the standard electrode potential, both in millivolts,t is temperature in °C, n is the number of electronstransferred (n = 1 in the present case), and [Fe ...
Page 151 - THEORy - REMOTE COMMUNICATIONS
15.1 OvERvIEw OF HART COMMUNICATION HART (highway addressable remote transducer) is a digital communication system in which two frequencies aresuperimposed on the 4 to 20 mA output signal from the transmitter. A 1200 Hz sine wave represents the digit 1,and a 2400 Hz sine wave represents the digit 0....
Page 152 - ASSET MANAGEMENT SOLUTIONS
144 MODEL 5081-P PH/ORP SECTION 15.0 THEORy - REMOTE COMMUNICATIONS If your communicator does not recognize the Model 5081-P pH/ORP transmitter, the device description library may needupdating. Call the manufacturer of your HART communication device for updates. 15.3 ASSET MANAGEMENT SOLUTIONS Asset...
Page 153 - RETURN OF MATERIAL; Call Rosemount Analytical for authorization.
MODEL 5081-P pH/ORP SECTION 16.0 RETURN OF MATERIAL SECTION 16.0 RETURN OF MATERIAL 16.1 GENERAL. To expedite the repair and return of instruments, propercommunication between the customer and the factoryi s i m p o r t a n t . C a l l 1 - 9 4 9 - 7 5 7 - 8 5 0 0 f o r a R e t u r nMaterials Authori...
Page 155 - The shipping container should be marked:
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, e...
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