Instruction Manual PN 51-6081P/rev.
ESSENTIAL INSTRUCTIONS READ THIS PAGE BEFORE PROCEEDING! Rosemount Analytical designs, manufactures, and tests its products to meet many national and international standards. Because these instruments are sophisticated technical products, you must properly install, use, and maintain them to ensure they continue to operate within their normal specifications.
CAUTION If a Model 375 Universal Hart ® Communicator is used with these transmitters, the software within the Model 375 may require modification. If a software modification is required, please contact your local Emerson Process Management Service Group or National Response Center at 1-800-654-7768. About This Document This manual contains instructions for installation and operation of the Model 6081-P Wireless pH/ORP Transmitter. The following list provides notes concerning all revisions of this document.
QUICK START GUIDE FOR MODEL 6081 WIRELESS pH TRANSMITTER 1. 2 3. 4. Refer to Section 2.0 Installation for installation instructions. . Wire the pH or ORP sensor to the transmitter. Refer to the sensor instruction sheet for details. Once the connections are secure and verified, install the Power Module to power to the transmitter. When the transmitter is powered up for the first time, Quick Start screens appear. Using Quick Start is easy. a. A blinking field shows the position of the cursor. b.
Quick Start Menu English Francais Espanol >> Measure? Redox Deutsch Italiano Portuguese >> pH ORP Use Preamp in? Xmtr Sensor Diagnostics? On Off Measure update rate: 1min Temperature in? °C °F Setup Wireless Network? Yes No Wireless Network HART PollAddress Network ID: 00000 Network Join Key 1 of 4: 00000000 Network Join Key 2 of 4: 00000000 Network Join Key 3 of 4: 00000000 Network Join Key 4 of 4: 00000000 Wireless Network HART PollAddress HART Polling Address: 00 E
F FIGURE 1-1.
MODEL 6081-P pH/ORP TABLE OF CONTENTS MODEL 6081-P pH/ORP WIRELESS TRANSMITTER TABLE OF CONTENTS Section 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Title DESCRIPTION AND SPECIFICATIONS ................................................................ Features and Applications........................................................................................ Specifications – General ......................................................................................... Specifications – Wireless ...............
MODEL 6081-P pH/ORP TABLE OF CONTENTS TABLE OF CONTENTS CONT’D 8.0 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 PROGRAMMING THE TRANSMITTER.................................................................. General .................................................................................................................... Changing Start-up Settings ...................................................................................... Choosing and Configuring the Analytical Measurement ....................
MODEL 6081-P pH/ORP TABLE OF CONTENTS LIST OF FIGURES Number 2-1 2-2 2-3 2-4 2-5 2-6 3-1 6-1 6-2 7-1 10-1 11-1 Title Wall Mounting Insatallation Model 6081................................................................... Pipe Mounting Insatallation Model 6081 .................................................................. Removing Rear Cover.............................................................................................. Power Module Warning Label .......................................
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MODEL 6081-P pH/ORP SECTION 1.0 DESCRIPTION AND SPECIFICATIONS SECTION 1.
MODEL 6081-P pH/ORP 1.3 SPECIFICATIONS - WIRELESS Output: WirelessHART V7 Transmit Rate: User selectable, 1/sec. to 1/60 min (via 1420 Wireless Gateway or AMS) Measurement update rate: 1/sec. to 1/10 min Antenna: PBT/PC integrated omni-directional antenna Radio Frequency: 2.4 GHz DSSS Transmission distance - line of sight: about 600 ft (ideal RF conditions and power module condition) Power: Lithium thionyl chloride long life power module 1.
MODEL 6081-P pH/ORP 1.5 Product Certifications Telecommunication Compliance All wireless devices require certification to ensure that they adhere to regulations regarding the use of the RF spectrum. Nearly every country requires this type of product certification. Emerson is working with governmental agencies around the world to supply fully compliant products and remove the risk of violating country directives or laws governing wireless device usage. SECTION 1.
MODEL 6081-P pH/ORP SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 1.7 ASSET MANAGEMENT SOLUTIONS Asset Management Solutions (AMS) is software that helps plant personnel better monitor the performance of analytical instruments, pressure and temperature transmitters, and control valves. Continuous monitoring means maintenance personnel can anticipate equipment failures and plan preventative measures before costly breakdown maintenance is required. AMS uses remote monitoring.
MODEL 6081-P pH/ORP SECTION 2.0 INSTALLATION SECTION 2.0 INSTALLATION 2.1 2.2 2.3 2.4 2.5 2.6 Considerations Unpacking and Inspection Pre-Installation Set Up Mechanical Installation Ground the Transmitter Power Module Installation 2.1 CONSIDERATIONS The transmitter can be commissioned before or after installation. It may be useful to commission it on the bench, before installation, to ensure proper operation and to become familiar with its functionality.
MODEL 6081-P pH/ORP SECTION 2.0 INSTALLATION 2.3 PRE-INSTALLATION SETUP 2.3.1 Temperature Element The Model 6081-P pH/ORP transmitter is compatible with sensors having Pt 100 and Pt 1000. Sensors from other manufacturers may have a Pt 1000 RTD. For Rosemount Analytical sensors, the type of temperature element in the sensor is printed on the tag attached to the sensor cable. For the majority of sensors manufactured by Rosemount Analytical, the RTD IN lead is red and the RTD RTN lead is white.
MODEL 6081-P pH/ORP SECTION 2.0 INSTALLATION NOTE: Always use facility recommended wiring practices. WARNING Failure to follow these installation guidelines could result in death or serious injury. • Make sure only qualified personnel perform the installation. Explosions could result in death or serious injury. • Before connecting a 375 Field Communicator in an explosive atmosphere, make sure the instruments are installed in accordance with intrinsically safe or non-incendive field wiring practices.
MODEL 6081-P pH/ORP SECTION 2.0 INSTALLATION 2.4.2 Mounting on a Flat Surface. Figure 2-1. Wall Mounting Installation Model 6081. Use Pipe/Wall Mounting Bracket Kit, PN 23820-00 Note: PN 23820-00 mounting bracket kit includes mounting hardware for pipe mounting only. Wall mounting hardware to be provided by customer. Only use suitable fasteners and hardware to securely fasten the bracket and transmitter to the wall surface.
MODEL 6081-P pH/ORP SECTION 2.0 INSTALLATION 2.4.3 Pipe Mounting. The pipe mounting kit (PN 23820-00/01) accommodates 1-1/2 to 2 in. pipe. Figure 2-2. Pipe Mounting Installation Model 6081.
MODEL 6081-P pH/ORP SECTION 2.0 INSTALLATION 2.6 POWER MODULE INSTALLATION The section describes the procedure for installation of the power module (part number 00753-9220-0001). The power module should stored in a safe place with a controlled environment until the Model 6081 is ready for live operation. For first time installation of the power module, follow these steps: 1. Unscrew the two long machine screws to remove the rear cover of the Model 6081.
MODEL 6081-P pH/ORP SECTION 2.0 INSTALLATION 4. With gentle pressure, insert the keyed connector on the power module into the receptacle (labeled Power Module Connection on the drawing). The power module seats in the connection receptacle with an o-ring. 5. Confirm that the power module is fully inserted in the receptacle and properly aligned with the surrounding terminal block. 6. Replace the rear cover of the Model 6081 with the two screws to secure it to the central housing.
MODEL 6081-P pH/ORP 12 SECTION 2.
MODEL 6081-P pH/ORP SECTION 3.0 WIRING SECTION 3.0 SENSOR WIRING 3.1 3.2 General Information Sensor Wiring 3.1 GENERAL INFORMATION pH and ORP sensors without preamps manufactured by Rosemount Analytical can be wired directly to the Model 6081-P wireless transmitter. 3.2 SENSOR WIRING To assist in sensor wiring, please refer to the one of the following resources: 1. Sensor Instruction Sheet – provided with each shipped sensor.
MODEL 6081-P pH/ORP 14 SECTION 3.
MODEL 6081-P pH/ORP SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF SECTION 4.
MODEL 6081-P pH/ORP 16 SECTION 4.
MODEL 6081-P pH/ORP SECTION 5.0 COMMISSIONING SECTION 5.0 COMMISSIONING 5.1 5.2 5.3 Network Communications Device Network Configuration Verify Operation 5.1 NETWORK COMMUNICATIONS The Model 6081 will receive any HART communications from a handheld Field Communicator, or AMS. When using a Field Communicator, any configuration changes must be sent to the transmitter by using the Send key (F2). AMS configuration changes are implemented when the Apply button is clicked. AMS Wireless and Direct Connections.
MODEL 6081-P pH/ORP SECTION 5.0 OPERATION WITH REMOTE CONTROLLER 5.3 VERIFY OPERATION Operation can be verified in three locations, at the device via the Local Display, using the 375 Field Communicator, or at the Gateway via the 1420 Wireless Gateway’s integrated web server. Local Display: During normal operation, the LCD will display the PV value at the wireless transmit rate up to as fast as 1 second intervals. Refer to LCD Screen.
MODEL 6081-P pH/ORP SECTION 6.0 DISPLAY AND OPERATION SECTION 6.0 DISPLAY AND OPERATION 6.1 Display 6.2 Keypad 6.3 Menus - pH 6.4 Information Screen Messages 6.5 Security 6.1. DISPLAY The Model 6081 has a two-line display. Generally, the user can program the transmitter to show one of three displays. If the transmitter has been configured to measure ORP or Redox, similar displays are available. Figure 6-1 shows the displays available for pH.
MODEL 6081-P pH/ORP 6.2 KEYPAD Figure 6-2 shows the 6081 keypad. SECTION 6.0 DISPLAY AND OPERATION Pressing EXIT ends action on the current screen without storing changes. The display returns to the previous screen. EXIT Pressing MENU causes the Menu screen to appear, or the live screen to appear if the display has timed out. MENU ENTER Pressing an arrow key moves the cursor in the direction indicated. If the cursor is on a numeral, pressing ◄ or ► moves the cursor left or right across the number.
MODEL 6081-P pH/ORP SECTION 6.0 DISPLAY AND OPERATION 6.5 SECURITY 6.6.1 How the Security Code Works Use security codes to prevent accidental or unwanted changes to program settings, displays, and calibration. Two three-digit security codes can be used to do the following… a. Allow a user to view the default display and information screens only. b. Allow a user access to the calibration and hold menus only. c. Allow a user access to all the menus. 1.
MODEL 6081-P pH/ORP 22 SECTION 6.
MODEL 6081-P pH/ORP SECTION 7.0 OPERATION WITH MODEL 375 SECTION 7.0 OPERATION WITH MODEL 375 7.1 7.2 7.3 7.1 Note on Model 375 HART Communicator Connecting the HART Communicator Operation Note on Model 375 HART Communicator The Model 375 HART Communicator is a product of Emerson Process Management, Rosemount Inc. This section contains selected information on using the Model 375 with the Rosemount Analytical Model 6081 Transmitter.
MODEL 6081-P pH/ORP 7.3 Operation 7.3.1 Off-line and On-line Operation SECTION 7.0 OPERATION WITH MODEL 375 The Model 375 Communicator features off-line and on-line communications. On-line means the communicator is connected to the transmitter in the usual fashion. While the communicator is on line, the operator can view measurement data, change program settings, and read diagnostic messages. Off-line means the communicator is not connected to the transmitter.
MODEL 6081-P pH/ORP SECTION 8.0 PROGRAMMING THE TRANSMITTER SECTION 8.0 PROGRAMMING THE TRANSMITTER 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 General Changing Start-up Settings Choosing and Configuring the Analytical Measurement Choosing Temperature Units and Manual or Auto Temperature Compensation Setting a Security Code Making HART-Related Settings Resetting Factory Calibration and Factory Default Settings Selecting a Default Screen and Screen Contrast Choosing a Display Timeout 8.
MODEL 6081-P pH/ORP SECTION 8.0 PROGRAMMING THE TRANSMITTER 8.3 CHOOSING AND CONFIGURING THE ANALYTICAL MEASUREMENT 8.3.1 Purpose This section describes how to do the following: 1. Configure the transmitter to measure pH, ORP, or Redox. 2. Determine the location of the preamp. 3. If pH was selected, there are additional selections and settings to make: a. choose a solution temperature correction curve or set a temperature coefficient constant b. choose sensor isopotential c.
MODEL 6081-P pH/ORP SECTION 8.0 PROGRAMMING THE TRANSMITTER 8.3.3 Procedure to configure: Measurement. To choose a menu item, move the cursor to the item and press ENTER. To store a number or setting, press ENTER. 1. Press MENU. The main menu screen appears. Choose Program. 2. Choose Measurement. 3. Choose pH, Redox, or ORP. If you chose pH, do steps 5 through 9. If you chose ORP or Redox, do step 10. 4. Enter the correct preamplifier location. The default setting is within the transmitter. 5.
MODEL 6081-P pH/ORP SECTION 8.0 PROGRAMMING THE TRANSMITTER 8.4 CHOOSING TEMPERATURE UNITS AND MANUAL OR AUTOMATIC TEMPERATURE COMPENSATION 8.4.1 Purpose This section describes how to do the following: 1. Choose temperature display units (°C or °F). 2. Choose automatic or manual temperature compensation. 3. Enter a temperature for manual temperature compensation 8.4.2 Definitions 1. AUTOMATIC TEMPERATURE COMPENSATION. The analyzer uses a temperature-dependent factor to convert measured cell voltage to pH.
MODEL 6081-P pH/ORP SECTION 8.0 PROGRAMMING THE TRANSMITTER 8.5 SETTING A SECURITY CODE 8.5.1 Purpose This section describes how to set a security code. There are three levels of security: a. A user can view the default display and information screens only. b. A user has access to the calibration menus only. c. A user has access to all menus. The security code is a three-digit number. The table shows what happens when security codes are assigned to Calib (calibration) and Config (configure).
MODEL 6081-P pH/ORP SECTION 8.0 PROGRAMMING THE TRANSMITTER 8.6 MAKING HART RELATED SETTINGS For more information refer to Sec. 1.0 8.7 RESETTING FACTORY CALIBRATION AND FACTORY DEFAULT SETTINGS 8.7.1 Purpose This section describes how to install factory calibration and default values. The process also clears all fault messages and returns the display to the first quick start screen. 8.7.2 Procedure: Installing default settings. 1. Press MENU. The menu screen appears. Choose Program. 2. Choose >>. 3.
MODEL 6081-P pH/ORP SECTION 8.0 PROGRAMMING THE TRANSMITTER 8.8 SELECTING A DEFAULT SCREEN AND SCREEN CONTRAST 8.8.1 Purpose This section describes how to do the following: 1. Set a default screen. The default screen is the screen shown during normal operation. The 6081 allows the user to choose from a number of screens. Which screens are available depends on the measurement the transmitter is making. 2. Change the screen contrast. 8.8.2 Procedure: Choosing a display screen. 1. Press MENU.
MODEL 6081-P pH/ORP SECTION 8.0 PROGRAMMING THE TRANSMITTER 8.9 CHOOSING A DISPLAY TIMEOUT 8.9.1 Purpose The local transmitter screen will timeout to preserve power module life. The transmitter will continue to receive measurement inputs and continue to transmit to the wireless network as programmed. 8.9.2 Procedure: Programming the display timeout 1. Press MENU to activate the live display. 2. Press MENU again. The menu screen appears. Choose Display. 3. Choose >>. 4. Select Display Timeout. Press ENTER.
MODEL 6081-P pH/ORP SECTION 9.0 CALIBRATION – TEMPERTURE SECTION 9.0 CALIBRATION — TEMPERATURE 9.1 9.2 Introduction Calibrating Temperature 9.1 INTRODUCTION The Calibrate Menu allows the user to calibrate the pH, ORP (or redox), and temperature response of the sensor. 9.2 CALIBRATING TEMPERATURE 9.2.1 Purpose Temperature affects the measurement of pH in three ways. 1. The analyzer uses a temperature dependent factor to convert measured cell voltage to pH.
MODEL 6081-P pH/ORP SECTION 9.0 CALIBRATION – TEMPERTURE 9.2.2 Procedure 1. Remove the sensor from the process. Place it in an insulated container of water along with a calibrated thermometer. Submerge at least the bottom two inches of the sensor. Stir continuously. 2. Allow the sensor to reach thermal equilibrium. For some sensors, the time constant for a change in temperature is 5 min., so it may take as long as 30 min. for temperature equilibration. 3.
MODEL 6081-P pH/ORP SECTION 10.0 CALIBRATION – PH SECTION 10.0 CALIBRATION — pH AND ORP 10.1 10.2 10.3 10.4 10.5 10.6 Introduction Procedure – Auto Buffer Calibration Procedure – Manual Two-Point Buffer Calibration Procedure – Standardization Procedure – Entering a Known Slope Value ORP Calibration 10.1 INTRODUCTION For pH sensors, two-point buffer calibration is standard. Both automatic calibration and manual calibration are available. Auto calibration avoids common pitfalls and reduces errors.
MODEL 6081-P pH/ORP During automatic calibration, the transmitter also measures noise and drift and does not accept calibration data until readings are stable. Calibration data will be accepted as soon as the pH reading is constant to within the factory-set limits of 0.02 pH units for 10 seconds. The stability settings can be changed. In manual calibration, the user judges when pH readings are stable.
MODEL 6081-P pH/ORP SECTION 10.0 CALIBRATION – PH 10.2 PROCEDURE — AUTO BUFFER CALIBRATION 1. Obtain two buffer solutions. Ideally, the buffer values should bracket the range of pH values to be measured. 2. Remove the pH sensor from the process liquid. If the process and buffer temperatures are appreciably different, place the sensor in a container of tap water at the buffer temperature. Do not start the calibration until the sensor has reached the buffer temperature. Thirty minutes is usually adequate.
MODEL 6081-P pH/ORP SECTION 10.0 CALIBRATION – PH 10.3 PROCEDURE — MANUAL TWO-POINT BUFFER CALIBRATION 1. Obtain two buffer solutions. Ideally, the buffer values should bracket the range of pH values to be measured. 2. Remove the pH sensor from the process liquid. If the process and buffer temperatures are appreciably different, place the sensor in a container of tap water at the buffer temperature. Do not start the calibration until the sensor has reached the buffer temperature.
MODEL 6081-P pH/ORP SECTION 10.0 CALIBRATION – PH 10.4 PROCEDURE — STANDARDIZATION 1. The pH measured by the transmitter can be changed to match the reading from a second or referee instrument. The process of making the two readings agree is called standardization. 2. During standardization, the difference between the two values is converted to the equivalent voltage. The voltage, called the reference offset, is added to all subsequent measured cell voltages before they are converted to pH.
MODEL 6081-P pH/ORP SECTION 10.0 CALIBRATION – PH 10.5 PROCEDURE — ENTERING A KNOWN SLOPE VALUE. 1. If the electrode slope is known from other measurements, it can be entered directly into the transmitter. 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) 298 t°C + 273 Changing the slope overrides the slope determined from the previous buffer calibration. 2. Press MENU. The main menu appears.
MODEL 6081-P pH/ORP SECTION 10.0 CALIBRATION – PH 10.6 ORP CALIBRATION 10.6.1 Purpose 1. For process control, it is often important to make the measured ORP agree with the ORP of a standard solution. 2. During calibration, the measured ORP is made equal to the ORP of a standard solution at a single point. 10.6.2 Preparation of ORP standard solutions ASTM D1498-93 gives procedures for the preparation of iron (II) - iron (III) and quinhydrone ORP standards.
MODEL 6081-P pH/ORP 42 SECTION 10.
MODEL 6081-P pH/ORP SECTION 11.0 MAINTENANCE SECTION 11.0 MAINTENANCE 11.1 11.2 11.3 11.4 11.5 11.6 Overview Transmitter Maintenance pH Sensor Maintenance ORP Sensor Maintenance Calibration Power Module Replacement 11.1 OVERVIEW This section gives general procedures for routine maintenance of the 6081-P pH/ORP transmitter and pH and ORP sensors. The transmitter needs almost no routine maintenance. Sensors require periodic inspection and cleaning.
MODEL 6081-P pH/ORP SECTION 11.0 MAINTENANCE 11.3 pH SENSOR MAINTENANCE 11.3.1 Frequency of Cleaning The frequency at which a sensor should be inspected and cleaned can be determined only by experience. If the process liquid coats or fouls the sensor, frequent cleaning may be necessary. If the process does not contain a high level of suspended solids, the need for regular cleaning will be less. Often an increase in glass impedance indicates the electrode is becoming fouled and needs cleaning.
MODEL 6081-P pH/ORP SECTION 11.0 MAINTENANCE 11.3.3 Checking the Reference Electrode. Some processes contain substances, for example, sulfides, that poison the reference electrode. Poisoning alters the electrode potential. For example, sulfide poisoning converts the reference electrode from a silver/silver chloride electrode into a silver/silver sulfide electrode, causing a shift in potential of several hundred millivolts.
MODEL 6081-P pH/ORP SECTION 11.0 MAINTENANCE 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 the process liquid coats or fouls the sensor, frequent cleaning may be necessary. If the process does not contain a high level of suspended solids, the need for regular cleaning will be less. 11.4.
MODEL 6081-P pH/ORP SECTION 11.0 MAINTENANCE 11.6 POWER MODULE REPLACEMENT Expected power module (part number 00753-9220-0001) life is two years at reference conditions. This section describes the procedure for replacement of power module (part number 00753-9220-0001). The new power module should stored in a safe place with a controlled environment until the Model 6081 is ready for live operation. For replacement of the power module, follow these steps: 1.
MODEL 6081-P pH/ORP SECTION 11.0 MAINTENANCE 11.6.1 Handling Considerations The power module with the wireless unit contains 2 “C” size primary lithium/thionyl chloride batteries. Each power module contains approximately 2.5 grams of lithium, for a total of 5 grams in each pack. Under normal conditions, the power module materials are self-contained and are not reactive as long as the batteries and the power module integrity are maintained.
MODEL 6081-P pH/ORP SECTION 12.0 RETURN OF MATERIALS SECTION 12.0 RETURN OF MATERIAL 12.1 GENERAL. 12.3 NON-WARRANTY REPAIR. To expedite the repair and return of instruments, proper communication between the customer and the factory is important. Call 1-949-757-8500 or 1-800-854-8257 for a Return Materials Authorization (RMA) number. The following is the procedure for returning for repair instruments that are no longer under warranty: 12.2 WARRANTY REPAIR.
MODEL 6081-P pH/ORP 50 SECTION 12.
WARRANTY Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from defects in workmanship 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. are warranted to be free from defects in workmanship and material under normal use and service for a period of ninety (90) days from date of shipment by Seller.
The right people, the right answers, right now. ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE 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 © Rosemount Analytical Inc.
