Emerson Rosemount 248 Скачать руководство пользователя страница 6

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viii

Reference Manual

00809-0100-4825, Rev CB

Table of Contents

March 2014

Table of Contents

3.3

AMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

3.3.1

Apply AMS changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

3.4

Field communicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

3.4.1

HART traditional menu tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

3.4.2

HART device dashboard menu tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

3.4.3

Fast Key sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

3.4.4

Review configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

3.4.5

Check output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

3.4.6

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

3.4.7

Information variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3.4.8

Diagnostics and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

3.5

Multidrop communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

3.6

Rosemount 248 Configuration Interface specifications . . . . . . . . . . . . . . . . . . . . .40

3.6.1

Configuration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

3.6.2

Configuration hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

3.6.3

Rosemount 248 PC Programmer Kit installation . . . . . . . . . . . . . . . . . . . . .41

Section 4: Operation and maintenance

4.1

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.1.1

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.2

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.2.1

Trim the transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.3

Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

4.3.1

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

4.4

Diagnostic messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4.4.1

Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

4.4.2

Field communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Appendix A: Specifications and reference data

A.1

Transmitter specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

A.1.1

Functional specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

A.1.2

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

A.1.3

Performance specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

A.2

Sensor specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.2.1

Thermocouples – IEC 584 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

A.2.2

Thermocouples – ASTM E- 230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A.2.3

RTDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A.2.4

Thermowells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Содержание Rosemount 248

Страница 1: ...Reference Manual 00809 0100 4825 Rev CB March 2014 Rosemount 248 Temperature Transmitter ...

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Страница 3: ...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 produc...

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Страница 5: ... Product recycling disposal 5 2Section 2 Installation 2 1 Safety messages 7 2 1 1 Warnings 7 2 2 Mounting 9 2 3 Installation 10 2 3 1 Typical European and Asia Pacific installation 10 2 3 2 Typical North and South American installation 11 2 4 Multichannel installations 14 2 5 Set the switches 14 2 5 1 Failure mode 14 2 6 Wiring 15 2 6 1 Sensor connections 16 2 7 Power supply 18 2 7 1 Surges transi...

Страница 6: ...cifications 40 3 6 1 Configuration software 40 3 6 2 Configuration hardware 40 3 6 3 Rosemount 248 PC Programmer Kit installation 41 4Section 4 Operation and maintenance 4 1 Safety messages 43 4 1 1 Warnings 43 4 2 Calibration 44 4 2 1 Trim the transmitter 44 4 3 Hardware 46 4 3 1 Maintenance 46 4 4 Diagnostic messages 47 4 4 1 Hardware 47 4 4 2 Field communicator 49 AAppendix A Specifications and...

Страница 7: ...g information 62 BAppendix B Product Certifications B 1 Approved Manufacturing Locations 65 B 2 European Directive Information 65 B 3 Ordinary Location Certification from FM Approvals 65 B 3 1 North America 65 B 3 2 Europe 66 B 3 3 International 68 B 3 4 China 69 B 3 5 Combinations 71 B 3 6 Tables 72 B 4 Installation drawings 72 ...

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Страница 9: ... only qualified personnel perform the installation Explosions could result in death or serious injury Do not remove the connection head cover in explosive atmospheres when the circuit is live Before connecting a Field Communicator in an explosive atmosphere make sure the instruments in the loop are installed in accordance with intrinsically safe or non intrinsic field wiring practices Verify that ...

Страница 10: ...ommunicator to configure the transmitter Section 4 Operation and maintenance Calibration the transmitter Explanation of hardware maintenance and diagnostic messages Appendix A Specifications and reference data Transmitter and Sensor Specifications Dimensional drawings Ordering Information Appendix B Product Certifications Product Certifications Hazardous Locations Certifications Installation Drawi...

Страница 11: ...er may be commissioned before or after installation It can be useful to commission it on the bench before installation to ensure proper operation and to become familiar with its functionality The instruments in the loop should be installed according to the intrinsically safe or non incendive field wiring practices before connecting a Field Communicator in an explosive atmosphere For more informati...

Страница 12: ...ipple or a remote mounting configuration to isolate the transmitter from the process Figure 1 1 provides an example of the relationship between transmitter housing temperature rise and extension length Figure 1 1 Rosemount 248 Transmitter Connection Head Temperature rise vs Extension Length Example The transmitter specification limit is 85 C If the ambient temperature is 55 C and the process tempe...

Страница 13: ... 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 Note If a hazardous substance is identified a Material Safety Data Sheet MSDS required by law to be available to people exposed to specific hazardous substances must be included with the returned materia...

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Страница 15: ...re only qualified personnel perform the installation Explosions could result in death or serious injury Do not remove the connection head cover in explosive atmospheres when the circuit is live Before connecting a communicator in an explosive atmosphere make sure the instruments in the loop are installed in accordance with intrinsically safe or non incendive field wiring practices Verify that the ...

Страница 16: ...allation Flowchart START HERE Bench calibration BASIC SETUP Set Sensor type Set Number of wires Set Units Set Range values Set Damping VERIFY Simulate Sensor input Within Specifications Refer to Section 4 Operation and maintenance FIELD INSTALL Mount transmitter Wire transmitter Power transmitter FINISHED ...

Страница 17: ...248H installs In a connection head or universal head mounted directly on a sensor assembly Apart from a sensor assembly using a universal head To a DIN rail using an optional mounting clip Mounting a Rosemount 248H to a DIN rail To attach a head mount transmitter to a DIN rail assemble the appropriate rail mounting kit part number 00248 1601 0001 to the transmitter as shown in Figure 2 2 Figure 2 ...

Страница 18: ...Wire the sensor to the transmitter see Sensor wiring Diagrams on page 16 4 Insert the transmitter sensor assembly into the connection head Thread the transmitter mounting screw into the connection head mounting holes and assemble the extension to the connection head then insert the assembly into the thermowell 5 Slip the shielded cable though the cable gland 6 Attach a cable gland into the shielde...

Страница 19: ...eads through the universal head and transmitter Mount the transmitter in the universal head by threading the transmitter mounting screws into the universal head mounting holes 5 Mount the transmitter sensor assembly into the thermowell sealing the adapter threads with silicone tape 6 Install conduit for field wiring to the conduit entry of the universal head making sure to seal the conduit threads...

Страница 20: ...ighten the thermowell before applying pressure 3 Attach the sensor to the connection head and mount the entire assembly to the thermowell 4 Attach sufficient lengths of sensor lead wire to the sensor terminal block 5 Attach and tighten the connection head cover Enclosure covers must be fully engaged to meet explosion proof requirements 6 Run sensor lead wires from the sensor assembly to the transm...

Страница 21: ...ry extension nipples and adapters Seal the nipple and adapter threads with silicone tape 4 Twist the sensor into the thermowell Install drain seals if required for severe environments or to satisfy code requirements 5 Screw the connection head to the sensor 6 Attach the sensor lead wires to the connection head terminals 7 Attach additional sensor lead wires from the connection head to the transmit...

Страница 22: ...performance during normal operation with an automatic diagnostic routine of continuous timed series of checks If an input sensor failure or a transmitter electronics failure is detected the transmitter outputs the low or high alarm depending on the failure mode configuration For sensor temperature outside of range limits Standard Saturation Levels 3 90 mA on the low end 20 5 mA on the high end NAM...

Страница 23: ...ment 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 Note Do not apply high voltage e g ac line voltage to the transmitter terminals since high voltage can damage the unit Sensor and transmitter power terminals are rated up to 42 4 Vdc Use extreme caution w...

Страница 24: ...wire if mounting the transmitter remotely from the sensor Make millivolt input connections with copper wire and use shielding for long runs of wire Power communication and sensors terminals Connecting a communicator to a transmitter loop A Field communicator B Power supply C 250 RL 1100 Note Signal loop may be grounded at any single point or left ungrounded Note A Field Communicator may be connect...

Страница 25: ... the same type of wire on all three lead wires makes a 3 wire RTD installation the most accurate A 2 wire sensor produces the largest error since 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 on Table 2 1help quantify these errors Table...

Страница 26: ...supply should provide power with less than 2 percent ripple The total resistance load is the sum of the resistance of the signal leads and the load resistance of any controller indicator or related pieces of equipment in the loop Note that the resistance of intrinsic safety barriers if used must be included Figure 2 8 Load Limits Basic error 0 5 0 00385 C 100 1 3 C Error due to amb temp var of 25 ...

Страница 27: ...es If the signal appears noisy or erratic grounding the current signal loop at a single point may solve the problem The best place to ground the loop is at the negative terminal of the power supply Do not ground the current signal loop at more than one point The transmitter is electrically isolated to 500 Vac rms 707 Vdc so the input circuit may also be grounded at any single point When using a gr...

Страница 28: ...cally isolated from the surrounding grounded fixtures Option 3 1 Ground sensor wiring shield at the sensor if possible 2 Make sure that the sensor wiring and signal wiring shields are electrically isolated from the transmitter housing 3 Do not connect the signal wiring shield to the sensor wiring shield 4 Ground signal wiring shield at the power supply end A Transmitter C 4 20 mA loop B Sensor wir...

Страница 29: ... wiring shield at the sensor 2 Make sure that the sensor wiring and signal wiring shields are electrically isolated from the transmitter housing 3 Do not connect the signal wiring shield to the sensor wiring shield 4 Ground signal wiring shield at the power supply end A Transmitter C 4 20 mA loop B Sensor wires D Shield ground point C B D D A ...

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Страница 31: ...sult in death or serious injury Do not remove the connection head cover in explosive atmospheres when the circuit is live Before connecting a communicator in an explosive atmosphere make sure the instruments in the loop are installed in accordance with instrinsically safe or non incendive field wiring practices When sending or requesting data that would disrupt the loop or change the output of the...

Страница 32: ...loop are installed according to intrinsically safe or non incendive field wiring practices before connecting in an explosive atmosphere Connect Field Communicator or AMS leads at any termination point in the signal loop Connect the communication leads to the COMM terminals located on the terminal block Do not connect to the TEST terminals Then set the transmitter jumpers to avoid damage caused by ...

Страница 33: ...he loop To assist communication connect the Field Communicator in parallel with the transmitter as shown in Figure 2 6 on page 16 Use the loop connection ports which are non polarized on the near panel of the Field Communicator Do not make connections to the serial port of the NICAad recharger jack in explosive atmospheres To use the Field Communicator in an explosive atmosphere the instruments in...

Страница 34: ...ment filtering 1 Process variables 2 Diagnostics and service 3 Configuration 4 Review 1 Variable mapping 2 Sensor configuration 3 Device output configuration 4 Device information 5 Measurement filtering 1 Transmitter vars 2 PV is 3 Snsr 1 4 AO 5 rnge 6 PV LRV 7 PV URV 8 PV LSL 9 PV USL 10 PV Damping 1 Device setup 2 PV is 3 PV 4 PV AO 5 RNGE 6 PV LRV 7 PV URV 1 PV is 2 SV is 3 Variable re map 1 Se...

Страница 35: ...log output 3 Percent range 4 Configuration 5 Alarm Sat levels Device 1 Identification 2 Device temp units 3 Open sensor hold off 4 Security enable disable 5 Noise rejection HART 1 Polling address 2 Burst mode 3 Burst option Noise Rejection 1 AC oower filter 2 Transient filter threshold Alarm Sat Levels 1 High alarm level 2 Low alarm level 3 High sat level 4 Low sat level 5 Alarm direction Configur...

Страница 36: ...2 3 Damping Values 1 1 10 Sensor Connection 1 3 2 1 1 Date 1 3 4 2 Sensor 1 Setup 1 3 2 1 2 Descriptor 1 3 4 3 Sensor Serial Number 1 3 2 1 3 Device Info 1 3 4 Sensor 1 Trim 1 2 2 1 Device Output Configuration 1 3 3 Sensor 1 Trim Factory 1 2 2 1 2 Diagnostics and Service 1 2 Sensor Type 1 3 2 1 1 Filter 50 60 Hz 1 3 5 1 Software Revision 1 4 1 Hardware Rev 1 4 1 Status 1 2 1 4 Hart Output 1 3 3 3 ...

Страница 37: ...A Trim 3 4 3 Damping Values 2 2 1 6 Sensor Connection 2 2 1 3 Date 2 2 3 1 2 Sensor 1 Set Up 2 1 1 Descriptor 2 2 3 1 4 Sensor Serial Number 1 7 1 4 Device Info 1 7 Sensor 1 Trim 3 4 1 1 Device Output Configuration 2 2 2 4 Sensor 1 Trim Factory 3 4 1 2 Filter 50 60 Hz 2 2 3 7 1 Sensor Type 2 2 1 2 Hardware Rev 1 7 2 3 Software Revision 1 7 2 4 Hart Output 1 7 2 1 Status 1 1 Loop Test 3 5 1 Tag 2 2...

Страница 38: ...d process variables including sensor temperature percent of range analog output and terminal temperature The primary variable is the 4 20 mA analog signal The secondary variable is the transmitter terminal temperature 3 4 6 Configuration The Rosemount 248 must be configured for certain basic variables to be operational In many cases these variables are pre configured at the factory Configuration m...

Страница 39: ...s A complete line of temperature sensors thermowells and accessory mounting hardware is available from Emerson Process Management Set output units The Set Output Unit command establishes the desired primary variable units The transmitter output can be set to one of the following engineering units Degrees Celsius Degrees Fahrenheit Degrees Rankine Kelvin Ohms Millivolts 50 60 Hz filter The 50 60 Hz...

Страница 40: ... time With damping enabled the transmitter outputs values according to the following relationship At time t Damping Value At the time the damping time constant is set the transmitter output is at 63 of the input change and continues to approach the input according to the damping equation above After one damping time constant following a sensor input step change the transmitter output will be at 63...

Страница 41: ...t the error caused by lead wire resistance 3 4 7 Information variables Access the transmitter information variables on line using the Field Communicator or other suitable communications device Following is a list of transmitter information variables which include device identifiers factory set configuration variables and other information A description of each variable the corresponding fast key s...

Страница 42: ...8 Diagnostics and service Test device The Test Device command initiates a more extensive diagnostics routine than is performed continuously by the transmitter The Test Device menu lists the following options 1 Loop test verifies the output of the transmitter the integrity of the loop and the operations of any recorders or similar devices installed in the loop See Loop test below for more informati...

Страница 43: ... or disables the pulsating current feature The transmitter ordinarily operates with pulsating current so that sensor diagnostic functions such as open sensor detection and EMF compensation can be performed correctly Some calibration equipment requires steady current to function properly By enabling the Active Calibrator Mode the transmitter stops sending pulsating current to the sensor and supplie...

Страница 44: ...her 2 Low Alarm 3 High Alarm 4 Low Sat or 5 High Sat then enter the desired new value which must fall within the guidelines The low alarm value must be between 3 50 and 3 75 mA The high alarm value must be between 21 0 and 23 0 mA The low saturation level must be between the low alarm value plus 0 1 mA and 3 9 mA Example The low alarm value has been set to 3 7 mA Therefore the low saturation level...

Страница 45: ...shold value set to 0 2 of sensor limits The Intermittent Sensor Detect feature can be switched ON or OFF and the threshold value can be changed to any value between 0 and 100 of the sensor limits with a Field Communicator Transmitter behavior with intermittent sensor detect ON When the Intermittent Sensor Detect feature is switched ON the transmitter can eliminate the output pulse caused by interm...

Страница 46: ...t 248 to tolerate heavy EMI disturbances without producing brief periods of alarm This is accomplished through the software by having the transmitter perform additional verification of the open sensor status prior to activating the transmitter alarm If the additional verification shows that the open sensor condition is not valid the transmitter will not go into alarm For users of the Rosemount 248...

Страница 47: ...y from each transmitter the combination of transmitter models and the length of the transmission line Each transmitter is identified by a unique address 1 15 and responds to the commands defined in the HART protocol Figure 3 3 Typical Multidropped Network Figure 3 3 shows a typical multidrop network Do not use this figure as an installation diagram Contact Emerson Process Management product suppor...

Страница 48: ...parameters Process Variable Sensor Type Number of Wires Engineering Units Transmitter Tag Information Damping Alarming Parameters 3 6 2 Configuration hardware The 248 Configuration Interface has three hardware options as follows Software only Customer must provide appropriate communications hardware modem power supply etc Serial HART modem and software Serial HART modem Customer must provide separ...

Страница 49: ...ate menu The USB modem driver emulates a COM port and will add to available port selections in the software s drop down box Otherwise software defaults to first available COM port which may not be correct 2 Set up configuration system hardware a Hook up the transmitter and load resistor 250 1100 ohms wired in series with the power supply The Rosemount 248 device will need an external power supply ...

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Страница 51: ...result in death or serious injury Do not remove the connection head cover in explosive atmospheres when the circuit is live Before connecting a Field Communicator in an explosive atmosphere make sure the instruments in the loop are installed in accordance with intrinsically safe or non incendive field wiring practices When sending or requesting data that would disrupt the loop or change the output...

Страница 52: ...tput Trim calibrates the transmitter to a 4 20 mA reference scale Scaled Output Trim calibrates the transmitter to a user selectable reference scale 4 2 1 Trim the transmitter One or more of the trim functions may be used when calibrating The trim functions are as follows Sensor Input Trim Output Trim Output Scaled Trim Sensor input trim Perform a sensor trim if the transmitters digital value for ...

Страница 53: ...o stabilize Use a bath furnace or isothermal block measured with a site standard thermometer as the known temperature source 8 Select OK when the temperature stabilizes The communicator displays the output value the transmitter associates with the input value provided by the calibration device 9 Enter the lower or upper trim point depending on the selection in Step 6 Output trim or scaled output t...

Страница 54: ...he reference meter value equals the transmitter output value select 1 Yes and go to Step 6 If the reference meter value is not equal to the transmitter output value select 2 No and go to Step 4 6 Select OK at the SETTING FLD DEV OUTPUT TO 20 MA prompt and repeat steps 4 and 5 until the reference meter value equals the transmitter output value 7 Return the control loop to automatic control and sele...

Страница 55: ...er installations it may be necessary because of excessive line length to specify the transmitter tag number to initiate communications High Output Sensor Input Failure or Connection Connect a Field Communicator and enter the transmitter test mode to isolate a sensor failure Check for a sensor open or short circuit Check the process variable to see if it is out of range Loop Wiring Check for dirty ...

Страница 56: ... 12 0 to 42 4 V dc over entire 3 75 to 23 mA operating range Check for shorts and multiple grounds Check for proper polarity at the signal terminal Check the loop impedance Connect a Field Communicator and enter the Loop test mode Check wire insulation to detect possible shorts to ground Electronics Module Connect a Field Communicator and check the sensor limits to ensure calibration adjustments a...

Страница 57: ... the item being added to the hotkey menu is a variable Download data from configuration memory to device Prompts user to press SEND softkey to initiate a memory to device transfer Exceed field width Indicates that the field width for the current arithmetic variable exceeds the device specified description edit format Exceed precision Indicates that the precision for the current arithmetic variable...

Страница 58: ...evice Data is being transferred from configuration memory to a device There are write only variables which have not been edited Please edit them There are write only variables which have not been set by the user These variables should be set or invalid values may be sent to the device There is unsent data Send it before shutting off Press YES to send unsent data and turn the Field Communicator off...

Страница 59: ...ion tested to 500 Vac rms 707 Vdc at 50 60 Hz Power supply An external power supply is required The transmitter operates on 12 0 to 42 4 Vdc transmitter terminal voltage with load resistance between 250 and 1100 ohms A minimum of 17 75 Vdc power supply is required with a load of 250 ohms Transmitter power terminals are rated to 42 4 Vdc A Field Communicator requires a loop resistance between 250 a...

Страница 60: ...ate Less than 0 5 seconds Custom alarm and saturation levels Custom factory configuration of alarm and saturation levels is available with option code C1 for valid values These values can also be configured in the field using a Field Communicator Software detected failure mode The values at which the transmitter drives its output in failure mode depends on whether it is configured to standard cust...

Страница 61: ... code B Housing Aluminum Paint Aluminum lacquer O Ring Seal Rubber Mounting The Rosemount 248R attaches directly to a wall or a DIN rail The Rosemount 248H installs in a connection head or universal head mounted directly on a sensor assembly or apart from a sensor assembly using a universal head The Rosemount 248H can also mount to a DIN rail using an optional mounting clip Weight Code Options Wei...

Страница 62: ...han 0 005 of span per volt Vibration effect The Rosemount 248 is tested to the following specifications with no effect on performance Stability For RTD and thermocouple inputs the transmitter will have a stability of 0 1 of reading or 0 1 C whichever is greater for twelve months Self calibration The analog to digital measurement circuitry automatically self calibrates for each temperature update b...

Страница 63: ...and ambient temperature effect is the greater of the fixed and percent of span values see example below Rosemount 248 Sensor connections diagram Rosemount Inc provides 4 wire sensors for all single element RTDs You can use these RTDs in 3 wire configurations by leaving the unneeded leads disconnected and insulated with electrical tape 1 2 3 4 2 3 4 1 2 3 4 1 2 3 4 1 2 wire RTD and 3 wire RTD and 4...

Страница 64: ...8 F 0 004 Ni 120 5 5 Edison Curve No 7 70 to 300 94 to 572 0 16 C 0 29 F 0 1 0 004 C 0 007 F 0 004 Cu 10 6 6 Edison Copper Winding No 15 50 to 250 58 to 482 2 C 3 60 F 0 1 0 06 C 0 108 F 0 004 Cu 50 0 00428 185 to 200 365 to 392 0 68 C 1 22 F 0 1 0 012 C 0 022 F 0 004 Cu 100 0 00428 185 to 200 365 to 392 0 34 C 0 61 F 0 1 0 006 C 0 011 F 0 004 Cu 50 0 00426 50 to 200 122 to 392 0 68 C 1 22 F 0 1 0...

Страница 65: ...cable to sensors offered in Table A 3 on page A 57 Construction Rosemount DIN plate and 1 2 in adapter style thermocouples are manufactured from selected materials to meet IEC 584 Tolerance Class 1 The junction of these wires is laser welded to form a pure joint maintaining circuit integrity and ensuring highest accuracy Lead wires Internal 18 SWG 16 AWG solid wire max 19 SWG 18 AWG solid wire min...

Страница 66: ...30 Insulation resistance 100 megaohms minimum insulation resistance when measured at 100 Vdc at room temperature A 2 3 RTDs Sensor type 100 ohm RTD at 0 C 0 00385 ohms ohm C Accuracy Meets IEC 751 Class B tolerances Temperature range 50 to 450 C 58 to 842 F Self heating 0 15 K mW when measured per method defined in DIN EN 60751 1996 or 16 mW minimum power dissipation required to cause a 1 C 1 8 F ...

Страница 67: ...struction Lead wires PTFE insulated coated 22 gauge stranded copper wire A 2 4 Thermowells Materials Barstock Thermowells 316L SST 1 4404 Tubular Thermowells 1 4571 316 Ti Construction Thermowell bodies are either machined from solid barstock or manufactured using swaged tubes Flange mounts are seal welded to the thermowell body with the exception of Class 900 flanges and above which are full pene...

Страница 68: ...ne heads option codes B and C and mini SST head option code S Universal head 1 option codes H and U 1 A U Bolt is shipped with each universal head unless a sensor is ordered assembled to the enclosure However since the head can be integrally mounted to the sensor it may not need to be used 123 5 4 86 95 25 3 75 25 9 1 02 48 77 1 92 44 1 7 33 1 3 12 9 0 51 24 5 0 97 104 4 09 100 3 93 78 3 07 Approv...

Страница 69: ...hermowell nipple union extension and 1 2 in NPT spring loaded sensor 80 3 2 for Class 900 flanges and larger N Extension Length U Thermowell Immersion Length Dimensions are in millimeters inches SEE ORDERING TABLES FOR MORE ASSEMBLY OPTIONS 248C configuration interface Option 1 HART Interface Box N U 25 1 0 BUZ Connection Head N U 40 1 6 60 2 3 Connection Head U N 60 2 3 Universal Head On Off See ...

Страница 70: ...Division 2 A B U N C G S H K5 FM Intrinsic Safety Explosion Proof and Class I Division 2 A U G H I6 CSA Intrinsic Safety and Class I Division 2 A B U N C G H K6 CSA Intrinsic Safety Explosion Proof and Class I Division 2 A U G H E1 ATEX Flameproof A U G H I1 ATEX Intrinsic Safety A B U N C G S H ND ATEX Dust A U G H N1 ATEX Type n A U G H NC 1 ATEX Type n Component N E7 IECEx Flameproof and Dust A...

Страница 71: ...ndard C4 5 Point Calibration Requires the Q4 option code to generate a Calibration Certificate Calibration certificate Standard Standard Q4 Calibration Certificate 3 Point standard External ground Standard Standard G1 External Ground Lug Assembly Line filter Standard Standard F6 60 Hz line Voltage Filter Conduit electrical connector Standard Standard GE 4 2 M12 4 pin Male Connector eurofast GM 2 A...

Страница 72: ...talled so it is protected to at least the requirements of IP54 2 All process connection threads are 1 2 in NPT except for Enclosure Codes H and U with Conduit Entry Code 1 and Sensor Type Code NS 3 For enclosures H and U with the XA option specified a 1 2 in NPT to M20 x 1 5 thread adapter is used 4 Available with Intrinsically Safe approvals only for FM Intrinsically Safe or Non Incendive approva...

Страница 73: ...t www rosemount com B 3 Ordinary Location Certification from FM Approvals As standard the transmitter has been examined and tested to determine that the design meets the basic electrical mechanical and fire protection requirements by FM Approvals a nationally recognized test laboratory NRTL as accredited by the Federal Occupational Safety and Health Administration OSHA B 3 1 North America E5 FM Ex...

Страница 74: ...157 92 CSA C22 2 No 213 M1987 C22 2 No 60529 05 Markings IS CL I DIV 1 GP A B C D when installed per Rosemount drawing 00248 1056 Suitable for CL I DIV 2 GP A B C D when installed per Rosemount drawing 00248 1055 T6 50 C Ta 40 C T5 50 C Ta 60 C Type 4X IP66 68 for enclosure options A G H U Seal not required See drawing 00248 1066 K6 CSA Explosionproof Intrinsic Safety and Division 2 Certificate 10...

Страница 75: ...t and friction when installed N1 ATEX Type n with enclosure Certificate BAS00ATEX3145 Standards Used EN 60079 0 2012 EN 60079 15 2010 Markings II 3 G Ex nA IIC T5 Gc 40 C Ta 70 C NC ATEX Type n without enclosure Certificate Baseefa13ATEX0045X Standards Used EN 60079 0 2012 EN 60079 15 2010 Markings II 3G Ex nA IIC T5 T6 Gc T5 60 C Ta 80 C T6 60 C Ta 60 C Special Conditions for Safe Use X 1 The Mod...

Страница 76: ...0086X Standards Used IEC 60079 0 2011 IEC 60079 11 2011 Markings Ex ia IIC T5 T6 Ga T5 60 C Ta 80 C T6 60 C Ta 60 C SeeTable B 2 at the end of the Product Certifications section for Entity Parameters Special Conditions for Safe Use X 1 The apparatus must be installed in an enclosure which affords it a degree of protection of at least IP20 Non metallic enclosures must have a surface resistance of l...

Страница 77: ...dards GB3836 13 1997 Electrical apparatus for explosive gas atmospheres Part 13 Repair and overhaul for apparatus used in explosive gas atmospheres GB3836 15 2000 Electrical apparatus for explosive gas atmospheres Part 15 Electrical installations in hazardous area other than mines GB3836 16 2006 Electrical apparatus for explosive gas atmospheres Part 16 Inspection and maintenance of electrical ins...

Страница 78: ...n non hazardous area 6 End user is not permitted to change any components inside but to settle the problem in conjunction with manufacturer to avoid damage to the product 7 When installation use and maintenance of this product observe the following standards GB3836 13 1997 Electrical apparatus for explosive gas atmospheres Part 13 Repair and overhaul for apparatus used in explosive gas atmospheres...

Страница 79: ... type and 14NPT or M20x1 5 thread type should be used on external connections and redundant cable entries 5 Maintenance should be done in non hazardous location 6 End user is not permitted to change any components inside but to settle the problem in conjunction with manufacturer to avoid damage to the product 7 When installation use and maintenance of this product observe the following standards G...

Страница 80: ...ation Drawing Rosemount Drawing 00644 1059 Rev AE 1 Sheet CSA Explosion proof Installation Drawing Important Once a device labeled with multiple approval types is installed it should not be reinstalled using any of the other labeled approval types To ensure this the approval label should be permanently marked to distinguish the used from the unused approval type s Table B 1 Process Temperatures Te...

Страница 81: ...B Appendix B Product Certifications March 2014 Product Certifications Figure B 1 FM Intrinsic Safety and Non Incendive Installation Drawing 00248 1055 Rev AD Sheet 1 of 2 Electronic Master PRINTED COPIES ARE UNCONTROLLED Rosemount Proprietary ...

Страница 82: ...B Appendix B Product Certifications March 2014 Product Certifications Figure B 2 FM Intrinsic Safety and Non Incendive Installation Drawing 00248 1055 Rev AD Sheet 2 of 2 Electronic Master PRINTED COPIES ARE UNCONTROLLED Rosemount Proprietary ...

Страница 83: ...75 Reference Manual 00809 0100 4825 Rev CB Appendix B Product Certifications March 2014 Product Certifications Figure B 3 Factory Mutual FM Explosion Proof Installation Drawing 00644 1049 Rev AD ...

Страница 84: ... Rev CB Appendix B Product Certifications March 2014 Product Certifications Figure B 4 CSA I Explosion Proof and Non Incendive Installation Drawing 00248 1056 Rev AB Electronic Master PRINTED COPIES ARE UNCONTROLLED Rosemount Proprietary ...

Страница 85: ...77 Reference Manual 00809 0100 4825 Rev CB Appendix B Product Certifications March 2014 Product Certifications Figure B 5 CSA Explosion Proof Installation Drawing 00644 1059 Rev AE ...

Страница 86: ...100 4825 Rev CB Appendix B Product Certifications March 2014 Product Certifications Figure B 6 IECEx Intrinsic Safety Installation Drawing 00248 1057 Rev AD Electronic Master PRINTED COPIES ARE UNCONTROLLED Rosemount Proprietary ...

Страница 87: ...33 Message 34 Sensor Serial Number 34 Tag 33 PV Damping 32 Review Configuration Data 30 Review 30 Select Sensor Type 31 Set Output Units 31 Terminal Temperature 31 Variable Mapping 30 Considerations 3 Commissioning 3 Electrical 3 Environmental 4 Temperature Effects 4 General 3 Mechanical 3 Location 3 Special Mounting 3 D Diagnostic Messages 47 Hardware 47 Diagnostics 34 Dimensional Drawings 60 Dra...

Страница 88: ...nsor Wiring Diagrams 16 Set the Loop to Manual 24 Specifications ASTME 230 Thermocouples Construction 58 Insulation Resistance 58 Lead Wires 58 Functional Alarm Levels 52 Failure Mode 52 Humidity Limits 51 Inputs 51 Isolation 51 NAMUR 51 Output 51 Power Supply 51 Saturation Levels 52 Temperature Limits 52 Transient Protection 52 Turn on Time 52 Update Rate 52 IEC 584 Thermocouples Construction 57 ...

Страница 89: ...March 2014 Transmitter 51 Functional 51 Performance 54 Physical 53 Surges 19 Switches 14 Failure Mode 14 T Transients 19 Trim the Transmitter 44 Output Trim 46 Scaled Output Trim 46 Sensor Input Trim 44 W Wiring 15 Loop Diagram 16 Sensor Wiring Diagrams 16 ...

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Страница 92: ...tion Foundation Foundation fieldbus is a registered trademark of the Fieldbus Foundation All other marks are the property of their respective owners March 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...

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