Rosemount 248 Wireless Temperature Transmitter

Transcription

1 Reference Manual Rosemount 248 Wireless Temperature Transmitter

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3 Reference Manual Rosemount 248 Wireless Rosemount 248 Wireless Temperature Transmitter Rosemount 248 Hardware Revision HART Device Revision Field Communicator Field Device Revision 1 2 Dev 2, DD v1 NOTICE Read this manual before working with the product. For personal and system safety, and for optimum product performance, make sure to thoroughly understand the contents before installing, using or maintaining this product. For technical assistance, contacts are listed below: Customer Central Technical support, quoting, and order-related questions. United States (7:00 am to 7:00 pm CST) Asia Pacific Europe/ Middle East/ Africa - 49 (8153) 9390 North American Response Center Equipment service needs (24 hours includes Canada) Outside of these areas, contact your local Emerson Process Management representative. The products described in this document are NOT designed for nuclear-qualified applications. Using non-nuclear qualified products in applications that require nuclear-qualified hardware or products may cause inaccurate readings. For information on Rosemount nuclear-qualified products, contact a Emerson Process Management Sales Representative.

4 Rosemount 248 Wireless Reference Manual 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: Installation of this transmitter in an explosive environment must be in accordance with the appropriate local, national, and international standards, codes, and practices. Please review the approvals section of the 248 reference manual for any restrictions associated with a safe installation. Before connecting a Field Communicator in an explosive atmosphere, ensure the instruments are installed in accordance with intrinsically safe or non-incendive field wiring practices. Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications. Process leaks may cause harm or result in death. Do not remove the thermowell while in operation. Install and tighten thermowells and sensors before applying pressure. Electrical shock can result in death or serious injury. Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock. This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired operation. This device must be installed to ensure a minimum antenna separation distance of 20 cm from all persons. The Power Module may be replaced in a hazardous area. The Power Module has surface resistivity greater than one gigaohm and must be properly installed in the wireless device enclosure. Care must be taken during transportation to and from the point of installation to prevent electrostatic charge build-up. NOTICE The Rosemount 248 Wireless and all other wireless devices should be installed only after the Smart Wireless Gateway has been installed and is functioning properly. Wireless devices should also be powered up in order of proximity from the Smart Wireless Gateway, beginning with the closest. This will result in a simpler and faster network installation. NOTICE Shipping considerations for wireless products: The unit was shipped to you without the Power Module installed. Please remove the Power Module prior to shipping the unit. Each Power Module contains two C size primary lithium batteries. Primary lithium batteries are regulated in transportation by the U. S. Department of Transportation, and are also covered by IATA (International Air Transport Association), ICAO (International Civil Aviation Organization), and ARD (European Ground Transportation of Dangerous Goods). It is the responsibility of the shipper to ensure compliance with these or any other local requirements. Please consult current regulations and requirements before shipping. tp-2

5 Reference Manual Rosemount 248 Wireless NOTICE Power Module Considerations: Each Power Module with the wireless unit contains two C size primary lithium/thionyl chloride batteries. Each battery contains approximately 2.5 grams of lithium, for a total of 5 grams in each pack. Under normal conditions, the battery materials are self-contained and are not reactive as long as the batteries and the pack integrity are maintained. Care should be taken to prevent thermal, electrical or mechanical damage. Contacts should be protected to prevent premature discharge. Battery hazards remain when cells are discharged. Power Modules should be stored in a clean and dry area. For maximum Power Module life, storage temperature should not exceed 30 C. tp-3

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7 Reference Manual Table of Contents Rosemount 248 Wireless SECTION 1 Overview SECTION 2 Configuration SECTION 3 Installation SECTION 4 Commissioning Using This Manual Safety Messages Warnings Considerations General Commissioning Mechanical Electrical Environmental Service Support Shipping considerations for wireless products: Product Recycling/Disposal Overview Safety Messages Warnings Sensor Connections Bench Top Configuration Device Network Configuration Join Device to Network Configure Update Rate HART Menu Tree Fast Key Sequence Calibration Remove Power Module Safety Messages Warnings Wireless Consideration Power Up Sequence Antenna Position Conduit Entry Field Communicator Connections Mounting Physical Installation Direct Mount Remote Mount Ground the Transmitter Safety Messages Warnings Verify Operations Field Communicator Smart Wireless Gateway AMS Wireless Configurator Troubleshooting Reference Information TOC-1

8 Rosemount 248 Wireless Reference Manual SECTION 5 Operation and Maintenance SECTION 6 Troubleshooting APPENDIX A Specifications and Reference Data APPENDIX B Product Certifications Safety Messages Warnings Power Module Replacement Overview Safety Messages Warnings Specifications A-1 Functional Specifications A-1 Physical Specifications A-1 Performance Specifications A-2 Accuracy A-3 Ambient Temperature Effect A-4 Dimensional Drawings A-5 Ordering Information A-6 Approved Manufacturing Locations B-1 Telecommunication Compliance B-1 FCC and IC B-1 European Union Directive Information B-1 Ordinary Location Certification for FM B-1 Hazardous Locations Certificates B-2 Radio Power Label B-4 TOC-2

9 Reference Manual Rosemount 248 Wireless Section 1 Overview Using This Manual page 1-1 Safety Messages page 1-2 Considerations page 1-3 Service Support page 1-4 Product Recycling/Disposal page 1-5 USING THIS MANUAL The sections in this manual provide information on installing, operating, and maintaining the Rosemount 248 Wireless temperature transmitter with WirelessHART protocol. The sections are organized as follows: Section 2: Configuration provides instruction on commissioning and operating 248 Wireless transmitters. Information on software functions, configuration parameters, and online variables is also included. Section 3: Installation contains mechanical and electrical installation instructions. Section 4: Commissioning contains techniques for properly commissioning the device. Section 5: Operation and Maintenance contains operation and maintenance techniques. Section 6: Troubleshooting provides troubleshooting techniques for the most common operating problems. Appendix A: Specifications and Reference Data supplies reference and specification data, as well as ordering information. Appendix B: Product Certifications contains approval information. 248 WIRELESS TRANSMITTER Features of the Rosemount 248 Wireless include: An installation-ready solution that provides a variety of mounting options, transmitter configurations, and sensors/thermowells Flexibility to meet your most demanding applications Wireless output with >99% data reliability delivers rich HART data, protected by industry leading security Simple and easy installation practices already used today for robust installations

10 Rosemount 248 Wireless Reference Manual Refer to the following literatures for a full range of compatible connection heads, sensors, and thermowells provided by Emerson Process Management. English Temperature Sensors and Assemblies Product Data Sheet, Volume 1 (document number ) Temperature Sensors and Accessories (Metric Sensors) Product Data Sheet, Volume 2 (document number ) SAFETY MESSAGES Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Information that potentially raises safety issues is indicated by a warning symbol ( ). Please refer to the following safety messages before performing an operation preceded by this symbol. Warnings 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 Field Communicator in an explosive atmosphere, make sure the instruments are installed in accordance with intrinsically safe or non-incendive field wiring practices. Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications. Process leaks could result in death or serious injury. Do not remove the thermowell while in operation. Install and tighten thermowells and sensors before applying pressure Electrical shock could cause death or serious injury. Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock. This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions. This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired operations. This device must be installed to ensure a minimum antenna separation distance of 20 cm from all person. The Power Module may be replaced in a hazardous area. The Power Module has surface resistivity greater than one gigaohm and must be properly installed in the wireless device enclosure. Care must be taken during transportation to and from the point of installation to prevent electrostatic charge build-up. 1-2

11 Reference Manual Rosemount 248 Wireless CONSIDERATIONS General Commissioning Mechanical Electrical Electrical temperature sensors such as RTDs and thermocouples produce low-level signals proportional to their sensed temperature. With simple HART configuration, the Rosemount 248 Wireless converts the low-level sensor signal to a wireless-enabled signal. 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. When applicable, make sure the instruments are installed in accordance with intrinsically safe or non-incendive field wiring practices. The device will be powered whenever the power module is installed. To avoid depleting the Power Module, make sure it is removed when the device is not in use. Location When choosing an installation location and position, take into account the need for access to the transmitter. For best performance, the antenna should be vertical with some space between objects in a parallel metal plane such as a pipe or metal framework, as the pipes or framework may adversely affect the performance of the antenna. Power Module The Rosemount 248 Wireless Temperature transmitter is self-powered. Each Power Module contains two C size primary lithium/thionyl chloride batteries. Each battery contains approximately 2.5 grams of lithium, for a total of 5 grams in each pack. Under normal conditions, the battery materials are self-contained and are not reactive as long as the batteries and the Power Module are maintained. Care should be taken to prevent thermal, electrical or mechanical damage. Contacts should be protected to prevent premature discharge. Use caution when handling the power module, it may be damaged if dropped from heights in excess of 20 feet. Battery hazards remain when cells are discharged. Power Modules should be stored in a clean and dry area. For maximum Power Module life, storage temperature should not exceed 30 C. Sensor Make sensor connections through the cable entry in the side of the connection head. Be sure to provide adequate clearance for cover removal. Environmental Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications. Temperature Effects The transmitter will operate within specifications for ambient temperatures between 40 and 185 F ( 40 and 85 C). Heat from the process is transferred from the thermowell to the transmitter housing. If the expected process temperature is near or beyond specification limits, consider the use of additional thermowell and extension, or remote mounting the transmitter to thermally isolate it from the process. 1-3

12 Rosemount 248 Wireless Reference Manual Temperature Limits Operating Limit 40 to 185 F 40 to 85 C Storage Limit 40 to 185 F 40 to 85 C SERVICE SUPPORT To expedite the return process outside of the United States, contact the nearest Emerson Process Management representative. Within the United States, call the Emerson Process Management Instrument and Valves Response Center using the RSMT (7768) toll-free number. This center, available 24 hours a day, will assist you with any needed information or materials. The center will ask for the following information: Product model Serial numbers The last process material to which the product was exposed The center will provide: A Return Material Authorization (RMA) number Instructions and procedures that are necessary to return goods that were exposed to hazardous substances Individuals who handle products exposed to a hazardous substance can avoid injury if they are informed of and understand the hazard. If the product being returned was exposed to a hazardous substance as defined by OSHA, a copy of the required Material Safety Data Sheet (MSDS) for each hazardous substance identified must be included with the returned goods. NOTE If the device has been exposed to a hazardous substance, a Material Safety Data Sheet (MSDS) must be included with the returned materials. An MSDS is required by law to be available to people exposed to specific hazardous substances. 1-4

13 Reference Manual Rosemount 248 Wireless NOTICE Shipping considerations for wireless products: The unit was shipped to you without the Power Module installed. Please remove the Power Module prior to shipping the unit. Each Power Module contains two C size primary lithium batteries. Primary lithium batteries are regulated in transportation by the U. S. Department of Transportation, and are also covered by IATA (International Air Transport Association), ICAO (International Civil Aviation Organization), and ARD (European Ground Transportation of Dangerous Goods). It is the responsibility of the shipper to ensure compliance with these or any other local requirements. Please consult current regulations and requirements before shipping. PRODUCT RECYCLING/DISPOSAL Recycling of equipment and packaging should be taken into consideration and disposed of in accordance with local and national legislation/regulations. 1-5

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15 Reference Manual Section 2 Configuration Rosemount 248 Wireless Overview page 2-1 Safety Messages page 2-1 Warnings page 2-2 Sensor Connections page 2-3 Bench Top Configuration page 2-7 Device Network Configuration page 2-9 HART Menu Tree page 2-11 OVERVIEW This section contains information on configuration and verification that should be performed prior to installation. Field Communicator and AMS instructions are given to perform configuration functions. For convenience, Field Communcator fast key sequences are labeled Fast Keys for each software function below the appropriate headings. Sensor Input Trim Example Fast Key Sequence 1, 2, 3, etc. SAFETY MESSAGES Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Information that potentially raises safety issues is indicated by a warning symbol ( ). Please refer to the following safety messages before performing an operation preceded by this symbol. Electrical grounds are indicated on drawings by a ground symbol ( ). Always follow proper grounding practices.

16 Rosemount 248 Wireless Reference Manual Warnings 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 Field Communicator in an explosive atmosphere, make sure the instruments are installed in accordance with intrinsically safe or non-incendive field wiring practices. Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications. Process leaks could result in death or serious injury. Do not remove the thermowell while in operation. Install and tighten thermowells and sensors before applying pressure Electrical shock could cause death or serious injury. Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock. This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired operation. This device must be installed to ensure a minimum antenna separation distance of 20 cm from all persons. The Power Module may be replaced in a hazardous area. The Power Module has surface resistivity greater than one gigaohm and must be properly installed in the wireless device enclosure. Care must be taken during transportation to and from the point of installation to prevent electrostatic charge build-up. 2-2

17 Reference Manual Rosemount 248 Wireless SENSOR CONNECTIONS The 248 Wireless is compatible with a number of RTD and thermocouple sensor types. Figure 2-1 shows the correct input connections to the sensor terminals on the transmitter. To ensure a proper sensor connection, anchor the sensor lead wires into the appropriate compression terminals and tighten the screws. Thermocouple or Millivolts Inputs The thermocouple can be connected directly to the transmitter. Use appropriate thermocouple extension wire if mounting the transmitter remotely from the sensor. Make millivolt inputs connections with copper wire. Use shielding for long runs of wire. RTD or Ohm Inputs The transmitters will accept a variety of RTD or ohmic configurations, including 2-wire, 3-wire or 4-wire connections. If the transmitter is mounted remotely from a 3-wire or 4-wire RTD, it will operate within specifications, without recalibration, for lead wire resistances of up to 5 ohms per lead (equivalent to 500 feet of 20 AWG wire). In this case, the leads between the RTD and transmitter should be shielded. If using a 2-wire connection, both RTD leads are in series with the sensor element, so significant errors can occur if the lead lengths exceed three feet of 20 AWG wire (approximately 0.05 C/ft.). For longer runs, attach a third or fourth lead to achieve a 3-wire or 4-wire connection as described above. Sensor Lead Wire Resistance Effect RTD Input When using a 4-wire RTD, the effect of lead resistance is eliminated and has no impact on accuracy. However, a 3-wire sensor will not fully cancel lead resistance error because it cannot compensate for imbalances in resistance between the lead wires. Using the same type of wire on all three lead wires will make a 3-wire RTD installation as accurate as possible. A 2-wire sensor will produce the largest error because it directly adds the lead wire resistance to the sensor resistance. For 2- and 3-wire RTDs, an additional lead wire resistance error is induced with ambient temperature variations. The table and the examples shown below help quantify these errors. Table 2-1. Examples of Approximate Basic Error Sensor Input Approximate Basic Error 4-wire RTD Negligible (independent of lead wire resistance up to 5 per lead 3-wire RTD ± 1.0 in reading per ohm of unbalanced lead wire resistance (Unbalanced lead wire resistance = maximum imbalance between any two leads.) 2-wire RTD 1.0 in reading per ohm of lead wire resistance 2-3

18 Reference Manual Rosemount 248 Wireless Figure 2-1. Sensor Wiring Diagrams Thermocouple and mv 4-Wire RTD and 3-Wire RTD and 2-Wire RTD and 248 Wireless Sensor Connections Diagram wire RTD and wire RTD and wire RTD and T/C and mv *Emerson Process Management provides 4-wire sensors for all single element RTDs. Use these RTDs in 3-wire or 2-wire configurations by leaving the unneeded leads disconnected and insulated with electrical tape. 2-4

19 Reference Manual Rosemount 248 Wireless Figure 2-2. Rosemount 65, 68Q, 78 Standard and High Temp, 58C and 68 RTD Lead Wire Configurations Single Element White (1) White (2) Red (3) Red (4) Figure 2-3. Rosemount 183 Thermocouple Lead Wire Configuration Type J +White (2) Type E +Purple (2) Red(3) Type K + Yellow (2) Red(3) Type T +Blue (2) Red (3) Red (3) Figure 2-4. Rosemount 185 Thermocouple Lead Wire Configurations Type J + Black (2) Type N +Red (2) White (3) Type K +Green (2) White (3) White (3) Note: Wire color examples apply to Rosemount sensors, but will vary by manufacturer. 2-5

20 Rosemount 248 Wireless Reference Manual Examples of Approximate Lead Wire Resistance Effect Calculations Given: a Pt100 RTD, Total cable length 150 m Imbalance of the lead wires at 20 C 0.5 Resistance/length (18 AWG Cu): /m Temperature coefficient of Cu ( Cu ) / C Temperature coefficient of Pt ( Pt ) / C Change in Ambient Temperature ( T amb ) 25 C RTD Resistance at 0 C (R 0 ) 100 (for Pt 100 RTD) Pt100 4-wire RTD: No lead wire resistance effect Pt100 3-wire RTD: Basic Error = Pt100 2-wire RTD: Imbalance of Lead Wires ( Pt x R 0 ) Error due to amb. temperature variation = ( Cu ) x ( T amb ) x (Imbalance of Lead Wires) ( Pt x R 0 ) Lead wire imbalance seen by the transmitter = 0.5 Basic Error = 0.5 ( / C) x (100 ) Error due to amb. temp. var. of ±25 C = ( / C) x (25 C) x (0.5 ) ( / C) x (100 ) Basic Error = Imbalance of Lead Wires ( Pt x R 0 ) = 1.3 C = ± C Error due to amb. temperature variation = ( Cu ) x ( T amb ) x (Lead Wire Resistance) ( Pt x R 0 ) Lead wire resistance seen by the transmitter = 150 m x 2 wires x /m = 7.5 Basic Error = 7.5 ( / C) x (100 ) Error due to amb. temp. var. of ±25 C = ( / C) x (25 C) x (7.5 ) ( / C) x (100 ) = 19.5 C = ± 1.9 C 2-6

21 Reference Manual Rosemount 248 Wireless Sensor Leads If the sensor is installed in a high-voltage environment and a fault condition or installation error occurs, the sensor leads and transmitter terminals could carry lethal voltages. Use extreme caution when making contact with the leads and terminals. Use the following steps to wire the sensor and supply power to the transmitter: 1. Remove the transmitter enclosure cover (if applicable). 2. Attach the sensor leads according to the wiring diagrams. 3. Connect the Power Module. 4. Verify the connection. 5. Reattach and tighten the cover (if applicable). BENCH TOP CONFIGURATION The Power Module must be installed to provide power to the 248 Wireless for configuration. Begin by removing the Power Module-side housing cover, indicated as Field Terminals by text located on the side of the device. This will expose the terminal block and HART communication terminals. Connect the Power Module to supply power for configuration. See Figure 2-5. Configuration of the 248 Wireless may be performed either directly or remotely. Direct configuration can be performed using a Field Communicator, AMS Device Manager, AMS Wireless Configurator or any WirelessHART Communicator. Remote configuration can be performed using AMS Device Manager, AMS Wireless Configurator or the Smart Wireless Gateway. Figure 2-5. Connection Diagram for Rosemount Wireless and Field Communicator 2-7

22 Rosemount 248 Wireless Reference Manual Field Communicator If performing device configuration directly, connect the bench equipment as shown in Figure 2-5 above, and turn on the Field Communicator by pressing the ON/OFF key. When using a Field Communicator, any configuration changes must be sent to the transmitter by using the Send key (F2). The Field Communicator will search for a HART-compatible device and indicate when the connection is made. If the Field Communicator fails to connect, it will indicate that no device was found. If this occurs, refer to Section 6: Troubleshooting. AMS Device Manager and AMS Wireless Configurator When configuring the 248 Wireless using AMS Device Manager or AMS Wireless Configurator, double click the 248 Wireless device icon (or right click and select Con /Setup), then choose the Configure Menu. AMS configuration changes are implemented when the Apply button is clicked. During direct connection configuration, AMS will search for a HART-compatible device and indicate when the connection is made. If AMS fails to connect, it indicates that no device was found. If this occurs, refer to Section 6: Troubleshooting. Smart Wireless Gateway The Rosemount 248 Wireless supports limited remote configuration through the Smart Wireless Gateway. The Gateway allows configuration of the following device parameters: HART Tag, Short Tag, Descriptor, Engineering Units, Update Rate and Range Values. DEVICE SENSOR CONFIGURATION Every temperature sensor has unique characteristics. In order to ensure the most accurate measurement, the Rosemount 248 Wireless should be configured to match the specific sensor that it will be connected to. Prior to installation, verify the configuration and connection settings of the temperature sensor through a Field Communicator or AMS. DEFAULT SETTINGS The 248 Wireless default configuration is shown below: Sensor Type Pt 100 ( = ) Engineering Units C Number of Lead Wires 4 Network ID Factory Generated Network Parameters Join Key Factory Generated Network Parameters Update Rate 1 Minute NOTE: The C1 option code can be used to enable factory configuration of the Update Rate, Date, Descriptor and Message fields. This code is not required to have the factory configure the Sensor Type, Connection or the Self Organizing Network parameters. 2-8

23 Reference Manual Rosemount 248 Wireless DEVICE NETWORK CONFIGURATION Join Device to Network Fast Keys 2, 1, 1 Configure Update Rate Fast Keys 2, 1, 2 In order to communicate with the Smart Wireless Gateway, and ultimately the Host System, the transmitter must be configured to communicate over the wireless network. This step is the wireless equivalent of connecting wires from a transmitter to the host system. 1. From the Home screen, select 2: Configure. 2. Select 1: Guided Setup. 3. Select 1: Join Device to Network. Using a Field Communicator or AMS to communicate with the transmitter, enter the Network ID and Join Key so they match the Network ID and Join Key of the Smart Wireless Gateway and the other devices in the network. If the Network ID and Join Key are not identical to those set in the Gateway, the transmitter will not communicate with the network. The Network ID and Join Key may be obtained from the Smart Wireless Gateway on the Setup>Network>Settings page on the web server. The Update Rate is the frequency at which a new measurement is taken and transmitted over the wireless network. This by default is 1 minute. This may be changed at commissioning, or at any time via AMS. The Update Rate is user selectable from 8 seconds to 60 minutes. 1. From the Home screen, select 2: Configure. 2. Select 1: Guided Setup. 3. Select 2: Configure Update Rate. When device configuration is completed, remove the Power Module and replace the housing cover. Tighten the cover so that metal contacts metal. Figure Wireless Terminal Block Connect the HART communication leads to the COMM terminals on the terminal block. 2-9

24 Rosemount 248 Wireless Reference Manual Figure 2-7. Field Communicator Connections For HART communication, a 248 Wireless DD is required. 2-10

25 Reference Manual Rosemount 248 Wireless HART Menu Tree Figure 2-8. Field Communicator Menu Tree 2-11

26 Rosemount 248 Wireless Reference Manual Fast Key Sequence Table 2-2 lists the fast key sequences for common transmitter functions. NOTE: The fast key sequences assume that DD Dev v2, DD v1 is being used. Table Wireless Fast Key Sequence Function Key Sequence Menu Items Device Information 1, 2, 5 Network, Field Device Info, Sensor Information PV Range Values 2, 2, 3 PV LRV, PV URV, LSL, USL Lower Range Value 2, 2, 3, 5 Set the temperature for the 0% point to configure the Percent of Range Upper Range Value 2, 2, 3, 4 Set the temperature for the 100% point to configure the Percent of Range Sensor Trim 2, 1, 4 Lower Sensor Trim, and Upper Sensor Trim (Calibration) Wireless Network 2, 2, 1 Network ID, Join Device to Network, Power Mode, Broadcast Rates Sensor Configuration 2, 1, 3 Sensor Configuration, Temp Sensor Setup, Sensor S/N Calibration Calibrating the transmitter increases the measurement precision by allowing corrections to be made to the factory-stored characterization curve by digitally altering the transmitter s interpretation of the sensor input. To understand calibration, it is necessary to understand that smart transmitters operate differently from analog transmitters. An important difference is that smart transmitters are factory-characterized, meaning that they are shipped with a standard sensor curve stored in the transmitter firmware. In operation, the transmitter uses this information to produce a process variable output, in engineering units, dependent on the sensor input. Calibration of the 248 Wireless may include the following procedure: Sensor Input Trim: Digitally alter the transmitter s interpretation of the input signal Trim the Transmitter The Sensor Input Trim function may be used when calibrating. Sensor Calibration Fast Keys 3, 4, 1 Perform a sensor trim if the transmitters digital value for the primary variable does not match the plant s standard calibration equipment. The sensor trim function calibrates the sensor to the transmitter in temperature units or raw units. Unless your site-standard input source is NIST-traceable, the trim functions will not maintain the NIST-traceability of the system. The Sensor Input Trim command allows the transmitter s interpretation of the input signal to be digitally altered. The sensor reference command trims, in engineering ( F, C, R, K) or raw (, mv) units, the combined sensor and transmitter system to a site standard using a known temperature source. Sensor trimming is suitable for validation procedures or for applications that require calibrating the sensor and transmitter together. 2-12

27 Reference Manual Rosemount 248 Wireless Use the following procedure to perform a sensor trim with a 248 Wireless: 1. Connect the calibration device or sensor to the transmitter. Refer to Figure 2-1 on page 2-4 or on the device terminal block for sensor wiring diagrams. 2. Connect the communicator to the transmitter. 3. From the Home screen, select Service Tools, Maintenance, Sensor Calibration to prepare to trim the sensor. 4. Select 3 Lower Sensor Trim or 4 Upper Sensor Trim. (Note: It is recommended to perform lower offset trims first, before performing upper slope trims). 5. Answer the question about using an active calibrator or not. 6. Select the appropriate sensor trim units at the prompt. 7. Adjust the calibration device to the desired trim value (must be within the selected sensor limits). If a combined sensor and transmitter system are being trimmed, expose the sensor to a known temperature and allow the temperature reading to stabilize. Use a bath, furnace or isothermal block, measured with a site-standard thermometer, as the known temperature source. 8. Select OK once the temperature stabilizes. The communicator displays the output value the transmitter associates with the input value provided by the calibration device. 9. Enter the trim point. AMS For AMS, configure the sensor as indicated above. From the Overview Screen click on the Calibrate button. Select Lower Input Trim or Upper Limit Trim. The wizard will continue through the process. The transmitter may be restored to the factory default by selecting: Service Tools>Maintenance>Sensor Calibration>Recall Factory Trim. The wizard will revert the transmitter to the factory trim for a given sensor. Apply changes. REMOVE POWER MODULE After the sensor and network have been configured, remove the Power Module and replace the transmitter cover. The Power Module should be inserted only when the device is ready to be commissioned. Use caution when handling the Power Module. The Power Module may be damaged if dropped from heights in excess of 20 ft. 2-13

28 Rosemount 248 Wireless Reference Manual 2-14

29 Reference Manual Section 3 Installation Rosemount 248 Wireless Safety Messages page 3-1 Wireless Consideration page 3-3 Field Communicator Connections page 3-4 Mounting page 3-5 Physical Installation page 3-5 Direct Mount page 3-6 Remote Mount page 3-7 Ground the Transmitter page 3-8 SAFETY MESSAGES Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Information that potentially raises safety issues is indicated by a warning symbol ( ). Please refer to the following safety messages before performing an operation preceded by this symbol.

30 Rosemount 248 Wireless Reference Manual Warnings 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: Installation of this transmitter in an explosive environment must be in accordance with the appropriate local, national, and international standards, codes, and practices. Please review the approvals section of the 248 reference manual for any restrictions associated with a safe installation. Before connecting a Field Communicator in an explosive atmosphere, ensure the instruments are installed in accordance with intrinsically safe or non-incendive field wiring practices. Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications. Process leaks may cause harm or result in death. Do not remove the thermowell while in operation. Install and tighten thermowells and sensors before applying pressure. Electrical shock can result in death or serious injury. Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock. This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired operation. This device must be installed to ensure a minimum antenna separation distance of 20 cm from all persons. The Power Module may be replaced in a hazardous area. The Power Module has surface resistivity greater than one gigaohm and must be properly installed in the wireless device enclosure. Care must be taken during transportation to and from the point of installation to prevent electrostatic charge build-up. 3-2

31 Reference Manual Rosemount 248 Wireless WIRELESS CONSIDERATION Power Up Sequence Antenna Position The Rosemount 248 Wireless and all other devices should be installed only after the Smart Wireless Gateway ( Gateway ) has been installed and is functioning properly. Wireless devices should also be powered up in order of proximity from the Gateway, beginning with the closest. This will result in a simpler and faster network installation. Enable Active Advertising on the Gateway to ensure that new devices join the network faster. For more information see the Smart Wireless Gateway Manual (Doc. No ). The antenna should be positioned vertically, either straight up or straight down, and it should be approximately 3 ft. (1 m) from any large structure, building, or conductive surface to allow for clear communication to other devices. Figure 3-1. Wireless Antenna Position Conduit Entry Upon installation, ensure that each conduit entry is either sealed with a conduit plug using an approved thread sealant, or has an installed conduit fitting or cable gland with approved threaded sealant. Figure 3-2. Rosemount 248 Wireless Conduit Entries Conduit Entry Conduit Entry 3-3

32 Rosemount 248 Wireless Reference Manual FIELD COMMUNICATOR CONNECTIONS The Power Module needs to be installed in the device for the Field Communicator to interface with the 248 Wireless. Field communication with this device requires a Field Communicator using the correct 248 Wireless DD. The correct DD for the available protocol should be selected. Refer to Figure 3-3 below for instructions on connecting the Field Communicator to the 248 Wireless. Figure 3-3. Connection Diagram 3-4

33 Reference Manual Rosemount 248 Wireless MOUNTING The Rosemount 248 Wireless can be installed in one of two configurations: Direct Mount, where the sensor is connected directly to the 248 Wireless housing s conduit entry, or Remote Mount, where the sensor is mounted separate from the 248 Wireless housing, then connected to the 248 Wireless via conduit. Choose the installation sequence that corresponds to the mounting configuration. Figure 3-4 provides an example of the relationship between transmitter housing temperature rise and extension length. Figure Wireless Transmitter Connection Head Temperature Rise vs. Extension Length Housing Temperature Rise, Above Ambient C ( F) 60 (140) 50 (122) 40 (104) (86) 20 (68) 10 (50) 815 C (1500 F) Process Temperature 540 C (1000 F) Process Temperature 250 C (482 F) Process Temperature 0 (32) Extension Length (in.) Example The transmitter specification limit is 85 C. If the ambient temperature is 55 C and the max process temperature to be measured is 815 C, the maximum permissible connection head temperature rise is the transmitter specification limit minus the ambient temperature (moves 85 to 55 C), or 30 C. In this case, an extension of 5 meets this requirement, but 6 provides an additional margin of thermowell protection, thereby reducing risk of ambient thermal damage. PHYSICAL INSTALLATION The Rosemount 248 Wireless can be installed in one of two configurations: Direct Mount, where the thermocouple or sensor is connected directly to the 248 Wireless housing s conduit entry, or Remote Mount, where the thermocouple or sensor is mounted separate from the 248 Wireless housing, then connected to the 248 Wireless via conduit. Choose the installation sequence that corresponds to the mounting configuration. Upon installation of the 248 Wireless, ensure that each conduit entry is either sealed with a conduit plug using an approved thread sealant, or has an installed conduit fitting or cable gland with approved thread sealant. 3-5

34 Rosemount 248 Wireless Reference Manual Direct Mount The direct mount installation should not be used when installing with a Swagelok fitting. 1. Install the sensor according to standard installation practices. Be sure to use an approved thread sealant on all connections. 2. Attach the 248 Wireless housing to the sensor using the threaded conduit entry. 3. Attach the sensor wiring to the terminals as indicated on the wiring diagram. 4. Connect the Power Module. NOTE: Wireless devices should be powered up in order of proximity from the Smart Wireless Gateway, beginning with the closest device to the Gateway. This will result in a simpler and faster network installation. 5. Close the housing cover and tighten to safety specification. Always ensure a proper seal by installing the electronics housing covers so that metal touches metal, but do not over tighten. 6. Position the antenna such that it is vertical, either straight up or straight down. The antenna should be approximately 3 ft. (0,91 m) from any large structures or buildings, to allow clear communication to other devices. Note: Possible antenna rotation shown. Antenna rotation allows best practices for any configuration. 3-6

35 Reference Manual Rosemount 248 Wireless Remote Mount 1. Install the sensor according to standard installation practices. Be sure to use an approved thread sealant on all connections. 2. Run wiring (and conduit, if necessary) from the sensor to the 248 Wireless. 3. Pull the wiring through the threaded conduit entry of the 248 Wireless. 4. Attach the sensor wiring to the terminals as indicated on the wiring diagram. 5. Connect the Power Module. NOTE: Wireless devices should be powered up in order of proximity from the Smart Wireless Gateway, beginning with the closest device to the Gateway. This will result in a simpler and faster network installation. 6. Close the housing cover and tighten to safety specification. Always ensure a proper seal by installing the electronics housing covers so that metal touches metal, but do not over tighten. 7. Position the antenna such that it is vertical, either straight up or straight down.the antenna should be approximately 3 feet (0,91 m) from any large structures or buildings to allow clear communication to other devices. 3-7

36 Rosemount 248 Wireless Reference Manual Ground the Transmitter The transmitter will operate with the housing either floating or grounded. However, the extra noise in floating systems affects many types of readout devices. If the signal appears noisy or erratic, grounding the transmitter at a single point may solve the problem. The electronics enclosure should be grounded in accordance with local and national installation codes. This can be accomplished via the process connection, via the internal case grounding terminal, or via the external grounding terminal. Thermocouple, mv, and RTD/Ohm Inputs Each process installation has different requirements for grounding. Use the grounding options recommended by the facility for the specific sensor type, or begin with grounding Option 1 (the most common). Option 1: 1. Connect sensor wiring shield to the transmitter housing (only if the housing is grounded). 2. Ensure the transmitter housing is electrically isolated from the sensor wiring. Shield Ground Point 3-8

37 Reference Manual Rosemount 248 Wireless Option 2: 1. Ground sensor wiring shield at the sensor. 2. Ensure that the sensor wiring and shield is electrically isolated from the transmitter housing. Shield Ground Point NOTE: Always use facility recommended wiring practices. 3-9

38 Rosemount 248 Wireless Reference Manual 3-10

39 Reference Manual Section 4 Commissioning Rosemount 248 Wireless Safety Messages page 4-1 Verify Operations page 4-2 AMS Wireless Configurator page 4-3 Troubleshooting page 4-3 Reference Information page 4-4 SAFETY MESSAGES Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing the operations. Information that potentially raises safety issues is indicated by a warning symbol ( ). Please refer to the following safety messages before performing an operation preceded by this symbol. Warnings 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: Installation of this transmitter in an explosive environment must be in accordance with the appropriate local, national, and international standards, codes, and practices. Please review the approvals section of the 248 reference manual for any restrictions associated with a safe installation. Before connecting a Field Communicator in an explosive atmosphere, ensure the instruments are installed in accordance with intrinsically safe or non-incendive field wiring practices. Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications. Process leaks may cause harm or result in death. Do not remove the thermowell while in operation. Install and tighten thermowells and sensors before applying pressure. Electrical shock can result in death or serious injury. Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock. This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired operation. This device must be installed to ensure a minimum antenna separation distance of 20 cm from all persons. The Power Module may be replaced in a hazardous area. The Power Module has surface resistivity greater than one gigaohm and must be properly installed in the wireless device enclosure. Care must be taken during transportation to and from the point of installation to prevent electrostatic charge build-up.

40 Rosemount 248 Wireless Reference Manual NOTE The Rosemount 248 Wireless and all other wireless devices should be installed only after the Smart Wireless Gateway has been installed and is functioning properly. Wireless devices should also be powered up in order of proximity from the Smart Wireless Gateway, beginning with the closest device to the Gateway. This will result in a simpler and faster network installation. VERIFY OPERATIONS Field Communicator Smart Wireless Gateway Operation can be verified in three locations: by using the Field Communicator, at the Smart Wireless Gateway s integrated web interface or via AMS Wireless Configurator. To verify operation using a Field Communicator, refer to the Fast Key Sequence in Table 4-1. Select the Communication Status parameter to verify operation. For connecting a 248 Wireless to a Field Communicator, refer to Figure 3-3 on page 3-4. Table Wireless Fast Key Sequence Function Key Sequence Menu Items Communications 3,3 Join Status, Communication Status, Join Mode, Number of Available Neighbors, Number of Advertisements Heard, Number of Join Attempts In the integrated web interface from the Gateway, navigate to the Explorer>Status page. This page shows whether the device has joined the network and if it is communicating properly. NOTE: It may take several minutes for the device to join the network. NOTE: If the device joins the network and immediately has an alarm present, it is likely due to sensor configuration. Check the sensor wiring (see Rosemount 248 Wireless Terminal Diagram on page 4-4) and the sensor configuration (see 248 Wireless Fast Key Sequence on page 4-2). 4-2

41 Reference Manual Rosemount 248 Wireless Figure 4-1. Smart Wireless Gateway Network Settings AMS WIRELESS CONFIGURATOR When the device has joined the network, it will appear in the Wireless Configurator window as illustrated below. TROUBLESHOOTING If the device is not joined to the network after power up, verify the correct configuration of the Network ID and Join Key, and verify that Active Advertising has been enabled on the Smart Wireless Gateway. The Network ID and Join Key in the device must match the Network ID and Join Key of the Gateway. The Network ID and Join Key may be obtained from the Gateway on the Setup>Network>Settings page on the web server (see Figure 4-1 on page 4-3). The Network ID and Join Key may be changed in the wireless device by using the following Fast Key sequence. Function Key Sequence Menu Items Join Device to Network 2,1,1 Join Device to Network 4-3