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Reference Manual 

00809-0100-4697, Rev GA

Title Page

November 2014

i

Rosemount 848T High Density Temperature 
Transmitter with F

OUNDATION

™

 fieldbus

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.
The United States has two toll-free assistance numbers and one international number
Customer Central
1-800-999-9307 (7:00 a.m. to 7:00 p.m. CST)
National Response Center
1-800-654-7768 (24 hours a day)
Equipment service needs
International
1-(952) 906-8888

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 an Emerson Process 
Management Sales Representative.]

Summary of Contents for Rosemount 848T

Page 1: ...Reference Manual 00809 0100 4697 Rev GA November 2014 Device Revision 8 Rosemount 848T High Density Temperature Transmitter with FOUNDATION fieldbus ...

Page 2: ......

Page 3: ...tes has two toll free assistance numbers and one international number Customer Central 1 800 999 9307 7 00 a m to 7 00 p m CST National Response Center 1 800 654 7768 24 hours a day Equipment service needs International 1 952 906 8888 The products described in this document are NOT designed for nuclear qualified applications Using non nuclear qualified products in applications that require nuclear...

Page 4: ...ii Reference Manual 00809 0100 4697 Rev GA Title Page November 2014 ...

Page 5: ...h a junction box 6 2 2 3 Mounting to a 2 in pipe stand 7 2 3 Wiring 8 2 3 1 Connections 8 2 3 2 Power supply 11 2 3 3 Surges transients 11 2 4 Grounding 11 2 5 Switches 14 2 6 Tagging 14 2 7 Installation 16 2 7 1 Using cable glands 16 2 7 2 Using conduit entries 17 3Section 3 Configuration 3 1 Safety messages 19 3 1 1 Warnings 19 3 2 Configuration 20 3 2 1 Standard 20 3 2 2 Transmitter configurati...

Page 6: ...k sub parameter tables 47 4Section 4 Operation and Maintenance 4 1 Safety messages 53 4 1 1 Warnings 53 4 2 Foundation fieldbus information 53 4 2 1 Commissioning addressing 54 4 3 Hardware maintenance 54 4 3 1 Sensor check 54 4 3 2 Communication power check 54 4 3 3 Resetting the configuration RESTART 55 4 4 Troubleshooting 55 4 4 1 Foundation fieldbus 55 4 4 2 Resource block 56 4 4 3 Transducer ...

Page 7: ...ty compliance testing 60 A 4 5 Accuracy 60 A 4 6 Differential configuration notes 61 A 4 7 Accuracy for differential configurations 61 A 4 8 Analog sensors 4 20mA 61 A 4 9 Ambient temperature effect 62 A 4 10Ambient temperature effects 62 A 4 11Ambient temperature notes 63 A 5 Dimensional drawings 64 A 5 1 Mounting options 66 A 6 Ordering information 67 BAppendix B Product Certificates B 1 North A...

Page 8: ...nscheduled transfers 95 C 5 5 Function block scheduling 96 DAppendix D Function Blocks D 1 Analog Input AI function block 97 D 1 1 Functionality 100 D 1 2 AI block troubleshooting 105 D 2 Multiple analog input MAI function block 106 D 2 1 Functionality 108 D 2 2 MAI block troubleshooting 112 D 3 Input selector function block 113 D 3 1 Functionality 115 D 3 2 ISEL block troubleshooting 119 ...

Page 9: ... mA inputs The enhanced measurement capability of the 848T allows it to communicate these variables to any FOUNDATION fieldbus host or configuration tool 1 2 2 Manual This manual is designed to assist in the installation operation and maintenance of the Rosemount 848T Temperature Transmitter Failure to follow these installation guidelines could result in death or serious injury Make sure only qual...

Page 10: ...lock Configuration Section 4 Operation and Maintenance Hardware Maintenance Troubleshooting Appendix A Reference Data Specifications Dimensional Drawings Ordering Information Appendix B Product Certificates Hazardous Locations Certificates Intrinsically Safe and Non Incendive Installations Installation Drawings Appendix C Foundation fieldbus Technology Device Descriptions Block Operation Appendix ...

Page 11: ...ng information Product model Serial numbers The last process material to which the product was exposed The center will provide the following A Return Material Authorization RMA number Instructions and procedures that are necessary to return goods that were exposed to hazardous substances For other locations contact an Emerson Process Management sales representative Note If a hazardous substance is...

Page 12: ...4 Reference Manual 00809 0100 4697 Rev GA Section 1 Introduction November 2014 Introduction ...

Page 13: ...here are three mounting configurations To a DIN rail without an enclosure To a panel with an enclosure To a 2 in pipe stand with an enclosure using a pipe mounting kit Failure to follow these installation guidelines could result in death or serious injury Make sure only qualified personnel perform the installation Process leaks could result in death or serious injury Do not remove the thermowell w...

Page 14: ...ned to the DIN rail Figure 2 1 Mounting the 848T to a DIN Rail A DIN Rail Mounting Clip B 848T without installed enclosure C DIN Rail 2 2 2 Mounting to a panel with a junction box When inside of a plastic or aluminum junction box the 848T mounts to a panel using four 1 4 20 x 1 25 in screws When inside of a stainless steel junction box the 848T mounts to a panel using two 1 4 20 x 1 2 in screws Fi...

Page 15: ...x Figure 2 3 Mounting the 848T to a 2 in Pipe Stand Using a Junction Box Aluminum plastic junction box styles JA and JP Stainless steel junction box style JS Front view Side view Front view Side view Dimensions are in inches millimeters A 5 1 130 B 10 2 260 C 6 6 167 fully assembled D 4 7 119 E 7 5 190 fully assembled Aluminum plastic junction box mounted on a vertical pipe Stainless steel junctio...

Page 16: ...Power Conditioner and Filter B 6234 ft 1900 m max depending on cable characteristics C Terminators Trunk D Power supply E FOUNDATION fieldbus host or configuration tool F Spur G Signal wiring H Devices 1 16 Intrinsically safe installations may allow fewer devices per I S barrier 2 3 1 Connections The 848T transmitter is compatible with 2 or 3 wire RTD thermocouple ohm and millivolt sensor types Fi...

Page 17: ...e thermocouple extension wire to connect the thermocouple to the transmitter Make connections for millivolt inputs using copper wire Use shielding for long runs of wire Analog inputs The analog connector converts the 4 20 mA signal to a 20 100 mV signal that can be read by the 848T and transmitted using FOUNDATION fieldbus Use the following steps when installing the 848T with the analog connector ...

Page 18: ...n Figure 2 6 848T Analog Input Wiring Diagram A Analog input connectors B Analog transmitters C Power supply Figure 2 7 848T Analog Connector A HART Channel A B 250 ohm resistor in the loop when switched to the left C HART Channel B D Space available for identification of inputs A B C A C D B ...

Page 19: ...ansmitter power terminals does not go below 9 VDC The power terminals are polarity insensitive To power the transmitter 1 Connect the power leads to the terminals marked Bus as shown in Figure 2 8 2 Tighten the terminal screws to ensure adequate contact No additional power wiring is necessary Figure 2 8 Transmitter Label A Ground required with T1 option B Connect power leads here 2 3 3 Surges tran...

Page 20: ...eld s 2 Ensure shields are tied together and electrically isolated from transmitter enclosure 3 Only ground shield at the power supply end 4 Ensure sensor shield s is electrically isolated from the surrounding grounded fixtures A Sensor wires B 848T C Power supply D Shield ground point Option 2 1 Connect sensor wiring shield s to the transmitter enclosure only if enclosure is grounded 2 Ensure sen...

Page 21: ...ply D Shield ground points Analog device inputs 1 Ground analog signal wire at the power supply of the analog devices 2 Ensure the analog signal wire and the fieldbus signal wire shields are electrically isolated from the transmitter enclosure 3 Do not connect the analog signal wire shield to the fieldbus signal wire shield 4 Ground fieldbus signal wire shield at the power supply end A 4 20 mA loo...

Page 22: ...nt Not used The switch is not functional 2 6 Tagging Commissioning tag The 848T has been supplied with a removable commissioning tag that contains both the Device ID the unique code that identifies a particular device in the absence of a device tag and a space to record the device tag the operational identification for the device as defined by the Piping and Instrumentation Diagram P ID When commi...

Page 23: ... store up to 32 characters If no characters are specified the first 30 characters of the hardware tag will be used Sensor tag Hardware A plastic tag is provided to record identification of eight sensors This information can be printed at the factory upon request In the field the tag can be removed printed onto and reattached to the transmitter Software If sensor tagging is requested the Transducer...

Page 24: ...ure 2 11 3 Install the sensor wires into the correct screw terminals follow the label on the electronics module 4 Install the power signal wires onto the correct screw terminals Power is polarity insensitive allowing the user to connect positive or negative to either fieldbus wiring terminal labeled Bus 5 Replace the enclosure cover and securely tighten all cover screws Figure 2 11 Installing the ...

Page 25: ...onduit fitting 4 Install the sensor wires into the correct screw terminals follow the label on the electronics module 5 Install the power signal wires into the correct screw terminals Power is polarity insensitive allowing the user to connect positive or negative to either fieldbus wiring terminal labeled Bus 6 Replace the junction box cover and securely tighten all cover screws Figure 2 12 Instal...

Page 26: ...18 Reference Manual 00809 0100 4697 Rev GA Section 2 Installation November 2014 Installation ...

Page 27: ...g an operation preceded by this symbol 3 1 1 Warnings Failure to follow these installation guidelines could result in death or serious injury Make sure only qualified personnel perform the installation Process leaks could result in death or serious injury Do not remove the thermowell while in operation Removing while in operation may cause process fluid leaks Install and tighten thermowells and se...

Page 28: ...ngs and block configuration may be changed in the field with the Emerson Process Management Systems DeltaV with AMS inside or other FOUNDATION fieldbus host or configuration tool 3 2 3 Custom configuration Custom configurations are to be specified when ordering 3 2 4 Methods For FOUNDATION fieldbus hosts or configuration tools that support device description DD methods there are two configuration ...

Page 29: ...rts bit in FEATURES_SEL When Multi bit alerts is enabled every active alarm is visible for any of the eight sensors generated by a PlantWeb and Field Diagnostics alert This is different than only viewing the highest priority alarm 6 Set the resource block to AUTO For modifying alarms on individual function blocks AI or ISEL blocks refer to Appendix D Function Blocks 3 2 6 Damping Use the following...

Page 30: ...ty This determines what happens when the specific limit has been exceeded No Alert Ignores limit settings Advisory Sets Advisory Plant Web Alert but does not do anything with PV status Warning Sets a Maintenance Plant Web Alert and sets PV status to uncertain Failure Sets A Failure Plant Web Alert and sets PV status to Bad 8 Set mode to Enabled for specific sensor 3 3 Common configurations for hig...

Page 31: ...ensor units and display decimal point 6 Place the MAI Function Block in auto mode 7 Verify that the function blocks are scheduled Monitoring application with a single selection Example Average exhaust temperature of gas and turbine where there is a single alarm level for all inputs 1 Link the MAI outputs to the ISEL inputs 2 Place the Multiple Analog Input MAI function block in OOS mode set MODE_B...

Page 32: ...us monitoring of temperature in a close proximity where each channel can have different sensor inputs with different units and there are independent alarm levels for each input 1 Place the first Analog Input AI function block in OOS mode set MODE_BLK TARGET to OOS 2 Set CHANNEL to the appropriate channel value Refer to Alarm Priority Levels on page 31 for a listing of channel definitions 3 Set L_T...

Page 33: ...00 OUT_SCALE ENGUNITS gpm 5 Set L_TYPE to INDIRECT 6 Set the MODE_BLK TARGET to AUTO or set the SENSOR_MODE to operation 3 4 Block configuration 3 4 1 Resource block The resource block defines the physical resources of the device including type of measurement memory etc The resource block also defines functionality such as shed times that is common across multiple blocks The block has no linkable ...

Page 34: ...ks 17 FEATURES Used to show supported resource block options The supported features are SOFT_WRITE_LOCK_SUPPORT HARD_WRITE_LOCK_SUPPORT REPORTS UNICODE MULTI_BIT_ALARM_SUPPORT and FB_ACTION_RESTART_RELINK 18 FEATURE_SEL Used to select resource block options 19 CYCLE_TYPE Identifies the block execution methods available for this resource The supported cycle types are SCHEDULED and COMPLETION_OF_BLO...

Page 35: ...r conditions that are being detected as active as selected for this category It is a bit string so that multiple conditions may be shown 46 FD_CHECK_ACTIVE Reflects the error conditions that are being detected as active as selected for this category It is a bit string so that multiple conditions may be shown 47 FD_FAIL_MAP Maps conditions to be detected as active for this alarm category Thus the s...

Page 36: ...n the FD_ _ACTIVE parameters 66 FD_EXTENDED_MAP_1 An optional parameter or parameters to allow the user finer control on enabling conditions contributing to the conditions in FD_ _ACTIVE parameters 67 COMPATIBILITY_REV Optionally used when replacing field devices The correct usage of this parameter presumes the COMPATIBILITY_REV value of the replacing device should be equal or lower than the DEV_R...

Page 37: ...parameter is the Read Only copy of FD_OFFSPEC_MAP 87 MAINT_MASK Mask of Maintenance Alarm Corresponds bit for bit to the MAINT_ACTIVE A bit on means that the failure is masked out from alarming This parameter is the Read Only copy of FD_OFFSPEC_MASK 88 MAINT_ACTIVE Enumerated list of maintenance conditions within a device All open bits are free to be used as appropriate for each specific device Th...

Page 38: ...never the BLOCK_ERR has an error bit set The types of block error for the resource block are defined above A write alarm is generated whenever the WRITE_LOCK parameter is cleared The priority of the write alarm is set in the following parameter WRITE_PRI Number Name and description 0 Other 1 Block Configuration Error A feature in CYCLE_SEL is set that is not supported by CYCLE_TYPE 3 Simulate Acti...

Page 39: ...ntWeb Alarm If FAILED_PRI is greater than 0 PlantWeb alarms are supported and Field Diagnostic are not PlantWeb functionality includes three different PlantWeb Alarms FAILED_ALM MAINT_ ALM and ADVISE_ ALM For PlantWeb Alerts there are corresponding alarm masking parameter alarm active parameter and alarm mapping parameter such as _MASK _ACTIVE _ENABLE These parameters have Read only access and are...

Page 40: ...ity FAILED_ALARMS A failure alarm indicates a failure within a device that will make the device or some part of the device non operational This implies that the device is in need of repair and must be fixed immediately There are five parameters associated with FAILED_ALARMS specifically they are described below FAILED_ENABLED This parameter contains a list of failures in the device which makes the...

Page 41: ...ds maintenance soon If the condition is ignored the device will eventually fail There are five parameters associated with MAINT_ALARMS they are described below MAINT_ENABLED The MAINT_ENABLED parameter contains a list of conditions indicating the device or some part of the device needs maintenance soon Table 3 6 Maintenance Alarms Priority Alarm MAINT_MASK The MAINT_MASK parameter will mask any of...

Page 42: ...he device s primary functions Below is a list of the advisories with the highest priority first Note Alarms are only prioritized if Multi Bit Alerts are disabled If MBA is enabled all alerts are visible ADVISE_MASK The ADVISE_MASK parameter will mask any of the failed conditions listed in ADVISE_ENABLED A bit on means the condition is masked out from alarming and will not be reported ADVISE_PRI AD...

Page 43: ...nsor 4 and or verify the sensor connection and device environment Maintenance Sensor 5 Degraded Confirm the operating range of Sensor 5 and or verify the sensor connection and device environment Maintenance Sensor 6 Degraded Confirm the operating range of Sensor 6 and or verify the sensor connection and device environment Maintenance Sensor 7 Degraded Conform the operating range of Sensor 7 and or...

Page 44: ...RMS specifically they are described below FD_FAILED_MAP FD_FAIL_MAP parameter maps conditions to be detected as active for FD_FAIL_ALARM category Thus the same condition may be active in all some or none of the 4 alarm categories Below is a list of the failures with the highest priority first Failed Sensor 8 Failure Verify the Sensor 8 Instrument process is within the Sensor range and or confirm s...

Page 45: ...akes the device non operational FD_FAIL_ALM parameter is used primarily to broadcast a change in the associated active conditions which are not masked for this alarm category to a Host System FD OFFSPEC ALARMS An offspec alarm indicates that the device or some part of the device needs maintenance soon if the condition is ignored the device will eventually fail There are five parameters associated ...

Page 46: ...tenance soon If the condition is ignored the device will eventually fail FD_ OFFSPEC _ALM parameter is used primarily to broadcast a change in the associated active conditions which are not masked for this alarm category to a Host System FD MAINT ALARMS A maintenance alarm indicates informative conditions that do not have a direct impact on the device s primary function s There are five parameters...

Page 47: ...DVISE_ALARMS they are described below FD_CHECK_MAP The FD_CHECK_MAP parameter contains a list of informative conditions that do not have a direct impact on the device s primary functions Below is a list of the advisories with the highest priority first Table 3 11 Check Alarms FD_ CHECK _MASK The FD_CHECK _MASK parameter will mask any of the failed conditions listed in FD_CHECK _MAP A bit on means ...

Page 48: ...Instrument process for Sensor 2 is within the Sensor range and or confirm sensor configuration and wiring Failed Sensor 3 Failure Verify the Instrument process for Sensor 3 is within the Sensor range and or confirm sensor configuration and wiring Failed Sensor 4 Failure Verify the Instrument process for Sensor 4 is within the Sensor range and or confirm sensor configuration and wiring Failed Senso...

Page 49: ...ating range of Sensor 6 and or verify the sensor connection and device environment Off Spec Sensor 7 Degraded Confirm the operating range of Sensor 7 and or verify the sensor connection and device environment Off Spec Sensor 8 Degraded Confirm the operating range of Sensor 8 and or verify the sensor connection and device environment Maintenance Excessive Deviation Verify the process temperature se...

Page 50: ...or 4 27 Sensor 6 Rate Change 13 Body Temperature 28 Sensor 7 Rate Change 14 Sensor 1 Deviation 29 Sensor 8 Rate Change 15 Sensor 2 Deviation BLOCK_ERR Condition number name and description 0 Other 1 1 If BLOCK_ERR is other then see XD_ERROR 7 Input failure process variable has bad status 15 Out of service The actual mode is out of service Table 3 13 Channel Definitions for the 848T Channel Descrip...

Page 51: ...ers Number Parameter Description 0 BLOCK 1 ST_REV The revision level of the static data associated with the function block 2 TAG_DESC The user description of the intended application of the block 3 STRATEGY The strategy field can be used to identify grouping of blocks 4 ALERT_KEY The identification number of the plant unit 5 MODE_BLK The actual target permitted and normal modes of the block 6 BLOC...

Page 52: ...n block 19 SENSOR_4_CONFIG Sensor Configuration Parameters See tables below for a list of sub parameters that pertain to Sensor Configuration functions 20 PRIMARY_VALUE_4 The measured value and status available to the function block 21 SENSOR_5_CONFIG Sensor Configuration Parameters See tables below for a list of sub parameters that pertain to Sensor Configuration functions 22 PRIMARY_VALUE_5 The ...

Page 53: ...he measured value and status available to the function block 40 DUAL_SENSOR_3_CONFIG Parameter structure to allow for calibration of each differential measurement See tables below for a list of sub parameters that pertain to Dual Sensor Calibration functions 41 DUAL_SENSOR_VALUE_3 The measured value and status available to the function block 42 DUAL_SENSOR_4_CONFIG Parameter structure to allow for...

Page 54: ...f sub parameters that pertain to Validation values 53 VALIDATION_SNSR5_CONFIG Validation configuration parameters See tables below for a list of sub parameters that pertain to Validation Configuration functions 54 VALIDATION_SNSR5_VALUES Validation value parameters See tables below for a list of sub parameters that pertain to Validation values 55 VALIDATION_SNSR6_CONFIG Validation configuration pa...

Page 55: ...e caused by an improper interrupt service routine an arithmetic overflow a watchdog timer etc 25 Algorithm Error The algorithm used in the transducer block produced an error This could be due to an overflow data reasonableness Parameter Description SENSOR_MODE Disables or enables a sensor for configuration SENSOR_TAG Sensor description SERIAL_NUMBER Serial number for the attached sensor SENSOR Sen...

Page 56: ...OINT_LO The Low calibration point for the selected sensor CALIB_UNIT The engineering units used for calibrating the sensor CALIB_METHOD The method of the last calibration for sensor 103 factory trim standard calibration 104 user trim standard calibration CALIB_INFO Information regarding the calibration CALIB_DATE Date that the calibration was completed CALIB_MIN_SPAN The minimum calibration span v...

Page 57: ...iguration DUAL_SENSOR_TAG Differential description INPUT_A Sensor to be used in DUAL_SENSOR_CALC INPUT_B Sensor to be used in DUAL_SENSOR_CALC DUAL_SENSOR_CALC Equation used for the dual sensor measurement including Not Used Difference Input A Input B and Absolute Difference Input A Input B ENG_UNITS Units used to display sensor parameter UPPER_RANGE Upper Differential Limit Input A High Input B L...

Page 58: ...e deviation diagnostic DD limits the upper range to 10 DEVIATION_ENG_UNITS Units tied to the deviation output value DEVIATION_ALERT_SEVERITY Advisory Maintenance Failure 0 Disabled Does not use the limits but provides an output 1 Advisory No effect on sensor status sets advisory PWA 2 Maint Sets sensor status to uncertain sets advisory PWA 3 Failure Sets sensor status to Bad sets advisory PWA DEVI...

Page 59: ...input temperature transmitter such as the 848T 1 Under SENSOR_CALIB the SENSOR_NUMBER to the number of the sensor to calibrate 2 Set CALIB_UNIT to calibration unit 3 Set CALIB_METHOD to User Trim seeTable on page 41 for valid values 4 Set the input value of the sensor simulator to be within the range defined by CALIB_LO_LIMIT and CALIB_HI_LIMIT 5 Set CALIB_POINT_LO CALIB_POINT_HI to the value set ...

Page 60: ...52 Reference Manual 00809 0100 4697 Rev GA Section 3 Configuration November 2014 Configuration ...

Page 61: ...d valve controllers It is a local area network LAN for instruments that enable basic control and I O to be moved to the field devices The Model 848T uses FOUNDATION fieldbus technology developed and supported by Emerson Process Management and the other members of the independent Fieldbus Foundation Failure to follow these installation guidelines could result in death or serious injury Make sure on...

Page 62: ...848T has no moving parts and requires a minimal amount of scheduled maintenance If a malfunction is suspected check for an external cause before performing the diagnostics presented below 4 3 1 Sensor check To determine whether the sensor is causing the malfunction connect a sensor calibrator or simulator locally at the transmitter Consult an Emerson Process Management representative for additiona...

Page 63: ...eters are incorrect Set the network parameters of the LAS host system according to the FF Communications Profile ST 8 MRD 4 DLPDU PhLO 4 MID 7 TSC 4 1 ms T1 96000 3 seconds T2 9600000 300 seconds T3 480000 15 seconds Network address is not in polled range Set first Unpolled Node and Number of UnPolled Nodes so that the device address is within range Power to the device is below the 9 VDC minimum I...

Page 64: ...not clear call the factory Block Alarms Will not work Features FEATURES_SEL does not have Alerts enabled Enable the report bit Notification LIM_NOTIFY is not high enough Set equal to MAX_NOTIFY Symptom Possible causes Corrective action Mode will not leave OOS Target mode not set Set target mode to something other than OOS A D board check sum error The A D board has a checksum error Resource block ...

Page 65: ...ons with maximum 150 m 500 ft of sensor lead length 18 AWG A 1 4 Ambient temperature limits 40 to 185 F 40 to 85 C A 1 5 Isolation Isolation between all sensor channels is rated to 10Vdc over all operating conditions No damage will occur to the device with up to 600 Vdc between any sensor channel A 1 6 Power supply Powered over FOUNDATION fieldbus with standard fieldbus power supplies The transmit...

Page 66: ...r device fails or is removed from the segment The host or other configuration tool is used to download the schedule for the application to the link master device In the absence of a primary link master the transmitter will claim the LAS and provide permanent control for the H1 segment FOUNDATION fieldbus parameters A 2 Physical specifications A 2 1 Mounting The Rosemount 848T can be mounted direct...

Page 67: ... strategies such as minimum maximum midpoint or average temperature Since the temperature value always contains the measurement status this block allows the selection to be restricted to the first good measurement A 3 3 Multiple analog input block MAI The MAI block allows the eight AI blocks to be multiplexed together so they serve as one function block on the H1 segment resulting in greater netwo...

Page 68: ...es Accuracy over range s C F C F 2 and 3 Wire RTDs Pt 50 0 00391 GOST 6651 94 200 to 550 328 to 1022 0 57 1 03 Pt 100 0 00391 GOST 6651 94 200 to 550 328 to 1022 0 28 0 50 Pt 100 0 00385 IEC 751 0 00385 1995 200 to 850 328 to 1562 0 30 0 54 Pt 100 0 003916 JIS 1604 1981 200 to 645 328 to 1193 0 30 0 54 Pt 200 0 00385 IEC 751 0 00385 1995 200 to 850 328 to 1562 0 54 0 98 Pt 200 0 003916 JIS 1604 0 ...

Page 69: ... to 1400 0 70 1 26 NIST Type K NIST Monograph 175 180 to 1372 292 to 2501 1 00 1 80 NIST Type N NIST Monograph 175 200 to 1300 328 to 2372 1 00 1 80 NIST Type R NIST Monograph 175 0 to 1768 32 to 3214 1 50 2 70 NIST Type S NIST Monograph 175 0 to 1768 32 to 3214 1 40 2 52 NIST Type T NIST Monograph 175 200 to 400 328 to 752 0 70 1 26 DIN L DIN 43710 200 to 900 328 to 1652 0 70 1 26 DIN U DIN 43710...

Page 70: ... 100 α 0 00391 0 002 C 0 0036 F N A Pt 100 α 0 00385 0 003 C 0 0054 F N A Pt 100 α 0 003916 0 003 C 0 0054 F N A Pt 200 α 0 003916 0 004 C 0 0072 F N A Pt 200 α 0 00385 0 004 C 0 0072 F N A Pt 500 0 003 C 0 0054 F N A Pt 1000 0 003 C 0 0054 F N A Cu 10 0 03 C 0 054 F N A Cu 100 a 428 0 002 C 0 0036 F N A Cu 50 a 428 0 004 C 0072 F N A Cu 100 a 426 0 002 C 0 0036 F N A Cu 50 a 426 0 004 C 0072 F N ...

Page 71: ... 33 C Total Probable Error Type R Type S 0 016 C 0 023 C 0 0036 of R R 200 R 200 Type T DIN Type U 0 0064 C 0 0064 C 0 0043 of R R 0 R 0 GOST Type L 0 007 C 0 007 C 0 003 of IRI R 0 R 0 Millivolt 0 0005 mV N A 2 and 3 wire ohm 0 0084 ohms N A 4 20 mA Rosemount 0 0001 mA N A 4 20 mA NAMUR 0 0001 mA N A 1 Change in ambient is in reference to the calibration temperature of the transmitter 20 C 68 F t...

Page 72: ...r junction box materials in this section Rosemount 848T Dimensions are in inches millimeters Aluminum Plastic Junction Box Cable Gland Option Codes JA2 and JP2 Dimensions are in inches millimeters Top View 3 D View Side View Security Switch Simulation Switch 6 7 170 3 7 93 1 7 43 Removable Wiring Connection Top View 3 D View Front View Side View 4 41 112 10 24 260 1 73 44 2 44 62 2 28 58 1 10 28 7...

Page 73: ...tic Junction Box Conduit Entry Option Codes JA3 and JP3 Dimensions are in inches millimeters Top View 3 D View Front View Side View 9 91 231 7 7 196 4 0 102 1 8 47 1 2 30 2 4 62 1 1 28 1 8 46 1 73 44 6 61 168 9 14 232 2 Ground Screw 7 72 196 Top view 3 D view Front view Side view 10 2 260 157 40 2 44 62 3 5 89 1 7 42 10 2 260 Five Plugged 0 86 in diameter holes suitable for installing 1 2 in NPT f...

Page 74: ...ox Style JS Front view Side view Front view Side view Dimensions are in inches millimeters Aluminum Plastic Junction Box Mounted on a Vertical Pipe Stainless Steel Junction Box Mounted on a Vertical Pipe Top view 3 D view Front view Side view 9 1 231 7 7 196 2 8 70 1 2 30 1 4 35 1 1 27 2 4 62 1 6 42 0 06 1 5 1 8 4 7 4 0 102 Ground Screw Five Plugged 0 86 in diameter holes suitable for installing 1...

Page 75: ... IA ATEX FISCO Intrinsic Safety No IE FM FISCO Intrinsically Safe No IF 2 CSA FISCO Intrinsically Safe Division 2 No IG IECEx FISCO Intrinsic Safety No N1 ATEX Type n enclosure required Yes N5 FM Class I Division 2 and Dust Ignition proof enclosure required Yes N6 CSA Class I Division 2 No N7 IECEx Type n enclosure required Yes NC ATEX Type n Component Ex nA nL No 3 ND ATEX Dust enclosure required...

Page 76: ...ibration Shipboard certification SBS American Bureau of Shipping ABS Type Approval SLL Lloyd s Register LR Type Approval Special temperature test LT Test to 60 F 51 1 C Conduit electrical connector GE 7 M12 4 pin Male Connector eurofast GM 7 A size Mini 4 pin Male Connector minifast Typical model number 848T F I5 S001 T1 B6 JA2 1 Consult factory for availability 2 Available only with S001 option 3...

Page 77: ...Federal Occupational Safety and Health Administration OSHA B 3 Installing Equipment in North America The US National Electrical Code NEC and the Canadian Electrical Code CEC permit the use of Division marked equipment in Zones and Zone marked equipment in Divisions The markings must be suitable for the area classification gas and temperature class This information is clearly defined in the respect...

Page 78: ...2009 NEMA 250 1991 IEC 60529 2001 Markings NI CL I DIV 2 GP A B C D T4A 50 C Ta 85 C T5 50 C Ta 70 C when installed per Rosemount drawing 00848 4404 Note Only the N5 and NK are valid with the S002 option B 3 2 Canada E6 CSA Explosion proof Dust Ignition proof Division 2 JX3 Enclosure Required Certificate 1261865 Standards CAN CSA C22 2 No 0 M91 R2001 CSA Std C22 2 No 25 1966 CSA Std C22 2 No 30 M1...

Page 79: ...lled per Rosemount drawing 00848 4405 N6 CSA Division 2 and Dust Ignition proof enclosure required Certificate 1261865 Standards CAN CSA C22 2 No 0 M91 R2001 CSA Std C22 2 No 30 M1986 CAN CSA C22 2 No 94 M91 CSA Std C22 2 No 142 M1987 CSA Std C22 2 No 213 M1987 CSA Std C22 2 No 60529 05 Markings Class I Division 2 Groups A B C and D T3C 50 C Ta 60 C when installed per Rosemount drawing 00848 4405 ...

Page 80: ...installing the equipment N1 ATEX Type n with enclosure Certificate Baseefa09ATEX0095X Standards EN 60079 0 2006 EN60079 15 2005 Marking II 3 G Ex nA nL IIC T5 40 C Ta 65 C Special Conditions for Safe Use X 1 Provision must be made external to the apparatus to ensure the rated voltage of the apparatus supply is not exceeded by transient disturbances of more than 40 2 The electrical circuit is conne...

Page 81: ...ATEX1315X Standards EN 50281 1 1 1998 Marking II 1 D T90 40 C Ta 65 C IP66 Special Conditions for Safe Use X 1 The user must ensure that the maximum rated voltage and current 42 4 volts 22 milliamp DC are not exceeded All connections to other apparatus or associated apparatus shall have control over this voltage and current equivalent to a category ib circuit according to EN 50020 2 Component appr...

Page 82: ...es must be suitable to prevent electrostatic hazards and light allow or zirconium enclosures must be protected from impact and friction when installed 2 The equipment is note capable of withstanding the 500V insulation test required by EN 60079 11 2012 clause 6 3 13 This must be taken into account when installing the equipment N7 IECEx Type n Approval Certificate IECEx BAS 09 0032X Standards IEC 6...

Page 83: ... 2011 ABNT NBR IEC 60079 11 2009 ABNT NBR IEC 60079 26 2008 Versão corrigida 2009 ABNT NBR IEC 60079 27 2010 Markings Ex ia IIC T4 50 C Ta 60 C Special Conditions of Safe Use 1 The equipment must be installed in an enclosure that provides a degree of protection of at least IP20 and which is appropriate to the application specified in ABNT NBR IEC60079 0 2 The equipment is not capable of withstandi...

Page 84: ...ave a surface resistance less than 1 GÙ If the enclosure is made of zirconium alloy the enclosure must be protected against impact and friction when installed 2 Provision must be made external to the equipment to ensure that the supply voltage 42 2Vdc is not exceeded by transient disturbances of more than 40 3 The maximum ambient temperature will be restricted to lowest temperature rating of the e...

Page 85: ...tion manual of the product and associated apparatus 7 The cables between this product and associated apparatus should be shielded cables the cables must have insulated shield The shielded cable has to be grounded reliably in non hazardous area 8 End users are not permitted to change any component s insides but to settle the problem in conjunction with manufacturer to avoid damage to the product 9 ...

Page 86: ...o ensure the rated voltage of the component supply is not exceeded by transient disturbances of more the 40 4 The ambient temperature range is 5 Maximum input voltage 42 4V 6 End users are not permitted to change any components inside but to settle the problem in conjunction with manufacturer to avoid damage to the product 7 During installation use and maintenance of this product observe following...

Page 87: ...ug and Threaded Adapter shall be either NPT or Metric thread forms G and PG 13 5 thread forms are only acceptable for existing legacy equipment installations IECEx Flameproof and Increased Safety Certificate IECEx FMG 13 0032X Standards IEC 60079 0 2011 IEC 60079 1 2007 IEC 60079 7 2006 2007 Markings Ex de IIC Gb Special Conditions for Safe Use X 1 When the thread adapter or blanking plug is used ...

Page 88: ...f Steel Ships Application Class notations AUT UMS AUT CCS AUT PORT and AUT IMS SDN Det Norske Veritas DNV Type Approval Certificate A 13246 Intended Use Det Norske Veritas Rules for Classification of Ships High Speed Light Craft and Det Norske Veritas Offshore Standards Applications I3 Lloyds Register LR Type Approval Certificate 11 60002 E2 Application Environmental categories ENV1 ENV2 ENV2 and ...

Page 89: ...tegory 2 Zone 0 category 1 Division 2 Division 1 GAS INSTALLATIONS I5 I6 I1 I7 IE IA N1 N7 N5 NC DUST INSTALLATIONS N5 ND 848T without enclosure Approved I S or FISCO barrier 848T with enclosure Non approved power supply 848T with enclosure Non approved power supply 848T without enclosure Approved non incendive power supply or barrier Non approved power supply 848T with enclosure Standard cable Di...

Page 90: ... installation guidelines presented by the drawings must be followed in order to maintain certified ratings for installed transmitters Rosemount Drawing 00848 4404 3 Sheets Factory Mutual Intrinsic Safety FISCO Installation Drawing Rosemount Drawing 00848 4405 2 Sheets Canadian Standards Association Intrinsic Safety FISCO Installation Drawing ...

Page 91: ...83 Reference Manual 00809 0100 4697 Rev GA Appendix B Product Certifications November 2014 Product Certificates Figure B 1 FM Intrinsic Safety FISCO ...

Page 92: ...84 Reference Manual 00809 0100 4697 Rev GA Appendix B Product Certifications November 2014 Product Certificates ...

Page 93: ...85 Reference Manual 00809 0100 4697 Rev GA Appendix B Product Certifications November 2014 Product Certificates ...

Page 94: ...86 Reference Manual 00809 0100 4697 Rev GA Appendix B Product Certifications November 2014 Product Certificates Figure B 2 CSA Intrinsic Safety FISCO El t i M t PRINTED COPIES ARE UNCONTROLLED R tP i t ...

Page 95: ...87 Reference Manual 00809 0100 4697 Rev GA Appendix B Product Certifications November 2014 Product Certificates ...

Page 96: ...88 Reference Manual 00809 0100 4697 Rev GA Appendix B Product Certifications November 2014 Product Certificates ...

Page 97: ...89 Reference Manual 00809 0100 4697 Rev GA Appendix B Product Certifications November 2014 Product Certificates ...

Page 98: ...90 Reference Manual 00809 0100 4697 Rev GA Appendix B Product Certifications November 2014 Product Certificates ...

Page 99: ...me control and input output functions to field devices FOUNDATION fieldbus devices work together to provide I O and control for automated processes and operations The Fieldbus Foundation provides a framework for describing these systems as a collection of physical devices interconnected by a fieldbus network One of the ways that the physical devices are used is to perform their portion of the tota...

Page 100: ... algorithm Upon completion of the algorithm the data internal to the block is saved for use in the next execution and the output data is snapped releasing it for use by other function blocks A block is a tagged logical processing unit The tag is the name of the block System management services locate a block by its tag Thus the service personnel need only know the tag of the block to access or cha...

Page 101: ...here is only one resource block defined for a device For example when the mode of a resource block is Out of Service OOS it impacts all of the other blocks Transducer blocks Transducer blocks connect function blocks to local input output functions They read sensor hardware and write to effector actuator hardware This permits the transducer block to execute as frequently as necessary to obtain good...

Page 102: ...nt bid to become the LAS The link master that wins the bid begins operating as the LAS immediately upon completion of the bidding process Link masters that do not become the LAS act as basic devices However the link masters can act as LAS backups by monitoring the link for failure of the LAS and then bidding to become the LAS when a LAS failure is detected Only one device can communicate at a time...

Page 103: ...n messages occurs Maximum Response MRD Defines the maximum amount of time permitted to respond to an immediate response request e g CD PT When a published value is requested using the CD command the MRD defines how long before the device publishes the data Increasing this parameter will slow down the bus traffic by decreasing how fast CDs can be put onto the network The MRD is measured in units of...

Page 104: ...ting is used to broadcast and multi cast event and trend reports The destination address may be predefined so that all reports are sent to the same address or it may be provided separately with each report Transfers of this type are queued They are delivered to the receivers in the order transmitted although there may be gaps due to corrupted transfers These transfers are unscheduled and occur bet...

Page 105: ... to send unscheduled messages between transmissions of scheduled data The LAS grants permission to a device to use the fieldbus by issuing a pass token PT message to the device When the device receives the PT it is allowed to send messages until it has finished or until the maximum token hold time has expired whichever is the shorter time The message may be sent to a single destination or to multi...

Page 106: ...resented as an offset from the beginning of the macrocycle start time Figure C 6 Example Link Schedule Showing Scheduled and Unscheduled Communication To support synchronization of schedules periodically Link Scheduling LS time is distributed The beginning of the macrocycle represents a common starting time for all Function Block schedules on a link and for the LAS link wide schedule This permits ...

Page 107: ...meter OUT reflects the process variable PV value and status In Manual mode OUT may be set manually The Manual mode is reflected on the output status A discrete output OUT_D is provided to indicate whether a selected alarm condition is active Alarm detection is based on the OUT value and user specified alarm limits The block execution time is 30 ms Out The block output value and status Out_D Discre...

Page 108: ...ock If the units do not match the block will not transition to MAN or AUTO 11 OUT_SCALE None The high and low scale values engineering units code and number of digits to the right of the decimal point associated with OUT when L_TYPE is not direct 12 GRANT_DENY None Options for controlling access of host computers and local control panels to operating tuning and alarm parameters of the block Not us...

Page 109: ...g the Active status if the subcode has changed 23 ACK_OPTION None Used to set auto acknowledgment of alarms 24 ALARM_HYS Percent The amount the alarm value must return within the alarm limit before the associated active alarm condition clears 25 HI_HI_PRI None The priority of the HI HI alarm 26 HI_HI_LIM EU of PV_SCALE The setting for the alarm limit used to detect the HI HI alarm condition 27 HI_...

Page 110: ... prevent devices that went through simulation in the staging process from being installed with simulation enabled With simulation enabled the actual measurement value has no impact on the OUT value or the status Figure D 1 Analog Input Function Block Timing Diagram 37 OUT_D None Discrete output to indicate a selected alarm condition 38 ALM_SEL None Used to select the process alarm conditions that ...

Page 111: ... L_TYPE parameter Direct Direct signal conversion allows the signal to pass through the accessed channel input value or the simulated value when simulation is enabled Indirect Indirect signal conversion converts the signal linearly to the accessed channel input value or the simulated value when simulation is enabled from its specified range XD_SCALE to the range and units of the PV and OUT paramet...

Page 112: ...le lists conditions reported in the BLOCK_ERR parameter Conditions in bold are inactive for the AI block and are given here for reference Table D 2 BLOCK_ERR Conditions Number Name and description 0 Other 1 Block Configuration Error the selected channel carries a measurement that is incompatible with the engineering units selected in XD_SCALE the L_TYPE parameter is not configured or CHANNEL zero ...

Page 113: ...is based on the OUT value Configure the alarm limits of the following standard alarms High HI_LIM High high HI_HI_LIM Low LO_LIM Low low LO_LO_LIM To avoid alarm chatter when the variable is oscillating around the alarm limit an alarm hysteresis in percent of the PV span can be set using the ALARM_HYS parameter The priority of each alarm is set in the following parameters HI_PRI HI_HI_PRI LO_PRI L...

Page 114: ...ument must be in OOS mode to set the status option 2 The AI block only supports the BAD if Limited option uncertain if limited and uncertain if manual Advanced features The AI function block provided with Rosemount fieldbus devices provides added capability through the addition of the following parameters ALARM_TYPE Allows one or more of the process alarm conditions detected by the AI function blo...

Page 115: ... must be set to Direct Indirect or Indirect Square Root and cannot be left at initial value of 0 Resource block The actual mode of the Resource block is OOS See Resource Block Diagnostics for corrective action Schedule Block is not scheduled and therefore cannot execute to go to Target Mode Typically BLOCK_ERR will show Power Up for all blocks that are not scheduled Schedule the block to execute P...

Page 116: ...ex numbers The block execution time is 30 ms Out1 The block output value and status for the first channel Table D 4 Multiple Analog Input Function Block Parameters Number Parameter Units Description 1 ST_REV None The revision level of the static data associated with the input selector block The revision value will be incremented each time a static parameter value in the block is changed 2 TAG_DESC...

Page 117: ...D_SCALE units code must match the units code of the measurement channel in the transducer block If the units do not match the block will not transition to MAN or AUTO It will automatically change units in the STB block to the last one written Multiple blocks reading the same channel may conflict only one unit type per channel 20 OUT_SCALE None The high and low scale values engineering unit code an...

Page 118: ...abled With simulation enabled the actual measurement value has no impact on the OUT value or the status The OUT values will all have the same value as determined by the simulate value Figure D 3 Multiple Analog Input Function Block Timing Diagram 27 28 29 30 31 32 33 34 CHANNEL_ 1 2 3 4 5 6 7 8 None The CHANNEL 1 2 3 4 5 6 7 8 value is used to select the measurement value See Table D 4 on page 106...

Page 119: ... Direct Direct signal conversion allows the signal to pass through the accessed channel input value or the simulated value when simulation is enabled Indirect Indirect signal conversion converts the signal linearly to the accessed channel input value or the simulated value when simulation is enabled from its specified range XD_SCALE to the range and units of the PV and OUT parameters OUT_SCALE Ind...

Page 120: ...odes The MAI Function Block supports three modes of operation as defined by the MODE_BLK parameter Manual Man The block output OUT may be set manually Table D 5 BLOCK_ERR Conditions Number Name and description 0 Other 1 Block Configuration Error the selected channel carries a measurement that is incompatible with the engineering units selected in XD_SCALE the L_TYPE parameter is not configured or ...

Page 121: ...he sensor limit exceeds the high or low side range PV status is set high or low and EU range status is set to uncertain In the STATUS_OPTS parameter select from the following options to control the status handling BAD if limited Sets the OUT status quality to Bad when the value is higher or lower than the sensor limits Uncertain if limited Sets the OUT status quality to Uncertain when the value is...

Page 122: ...following are parameters that must be set before the block is allowed out of OOS Initial value is 1 XD_SCALE UNITS_INDEX must match the units in all the corresponding sensor transducer blocks L_TYPE must be set to Direct Indirect or Indirect Square Root and cannot be left at initial value of 0 Resource block The actual mode of the Resource block is OOS See Resource Block Diagnostics for corrective...

Page 123: ...D 6 Input Selector Function Block Parameters Number Parameter Units Description 1 ST_REV None The revision level of the static data associated with the input selector block The revision value will be incremented each time a static parameter value in the block is changed 2 TAG_DESC None The user description of the intended application of the block 3 STRATEGY None The strategy field can be used to i...

Page 124: ...SELECTED None The selected input number 1 to 8 or the number of input used for the average output 22 OP_SELECT None Overrides the algorithm to select 1 of the 8 inputs regardless of the selection type 23 UPDATE_EVT None This alert is generated by any change to the static data 24 BLOCK_ALM None The block alarm is used for all configuration hardware connection failure or system problems in the block...

Page 125: ...rm 44 LO_LO_LIM EU of IN The setting for the alarm limit sued to detect the LO LO alarm condition 45 HI_HI_ALM None The HI HI alarm data which includes a value of the alarm a timestamp of occurrence and the state of the alarm 46 HI_ALM None The HI alarm data which includes a value of the alarm a timestamp of occurrence and the state of the alarm 47 LO_ALM None The LO alarm data which includes a va...

Page 126: ...he BLOCK_ERR parameter shows Out of Service The target mode of a block may be restricted to one or more of the supported modes In this mode changes can be made to all configurable parameters Number Name and description 0 Other The output has a quality of uncertain 1 Block Configuration Error Select type is not configured 2 Link Configuration Error 3 Simulate Active 4 Local Override 5 Device Fault ...

Page 127: ...he six available methods algorithms is used to select the output configure the selector type parameter SELECT_TYPE as follows Max selects the maximum value of the inputs Min selects the minimum value of the inputs Avg calculates the average value of the inputs Mid calculates the update for eight sensors 1st Good selects the first available good input If the DISABLE_N is active the associated input...

Page 128: ...ue is a constant and the OUT status is always Good In the STATUS_OPTS parameter select from the following options to control the status handling Use uncertain as good Sets the OUT status quality to Good when the selected input status is Uncertain Uncertain if in manual mode The status of the Output is set to Uncertain when the mode is set to manual Note The instrument must be to OOS to set the sta...

Page 129: ...Power Up for all blocks that are not scheduled Schedule the block to execute Status of output is BAD Inputs All inputs have Bad status OP selected OP_SELECT is not set to 0 or it is linked to an input that is not 0 and it points to an input that is Bad Min good The number of Good inputs is less than MIN_GOOD Block is in OOS mode Change mode to Auto Block alarms will not work Features FEATURES_SEL ...

Page 130: ...120 Reference Manual 00809 0100 4697 Rev GA Appendix D Function Blocks November 2014 Function Blocks ...

Page 131: ...ion 20 Alarms 21 Analog Transmitters 25 Analog Input Block 25 Multiple Analog Input Block 25 Block 26 Custom 20 Damping 21 Differential Sensor Blocks 21 Methods 20 Monitoring Applications Single Selection 23 Typical 23 Reset 49 Restart Processor 49 Restart with Defaults 49 Resource Block 26 Standard 20 Transmitter 20 Connections 9 Analog Inputs 10 Millivolt Inputs 10 Ohm Inputs 10 Power Supply 12 ...

Page 132: ...ecution 115 Errors 113 Functionality 113 Modes 114 Automatic 114 Manual 114 Out of Service 114 Parameters 111 Status Handling 115 Troubleshooting 117 Installation 17 Intrinsically Safe 75 Non Incendive 75 Using Cable Glands 17 Using Conduit Entries 18 J Junction Box Mounting 6 L Link Active Scheduler 88 Backup LAS 89 LAS Parameters 89 M Maintenance Hardware 48 Communication Check 48 Power Check 48...

Page 133: ...tion 90 Server 90 Subscriber 90 Security Switch 15 Senor Connection Check 48 Sensor Tag 16 Sensor Transducer Block Change Sensor Configuration 45 Sensor Calibration 45 Sensor Wiring Diagram 10 Shield Wire Ground 13 Simulate Enable Switch 15 Specifications performance 54 Surges 12 Switches 15 Security 15 Simulate Enable 15 T Tagging 16 Commissioning 16 Sensor 16 Transmitter 16 Transducer Block Alar...

Page 134: ...Index 4 Reference Manual 00809 0100 4697 Rev GA Index November 2014 Index ...

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Page 136: ...ners 2014 Rosemount Inc All rights reserved Emerson Process Management GmbH Co Argelsrieder Feld 3 82234 Wessling Germany Tel 49 8153 9390 Fax 49 8153 939172 Emerson Process Management Asia Pacific Private Limited 1 Pandan Crescent Singapore 128461 T 65 6777 8211 F 65 6777 0947 Enquiries AP EmersonProcess com Beijing Rosemount Far East Instrument Co Limited No 6 North Street Hepingli Dong Cheng Di...

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