- 1 - User`s Manual: Series 450T Model 450T Mill
Contents
1. 1 25ppm DVM MAY BE TYPE J TYPICAL CONNECTED BETWEEN THE OUTPUT S AND 4 TERMINAL K CHROMEL YELLOW ALUMEL TO MONITOR THE LOOP CURRENT THUS A DVM copper sue constantan Reb MEASUREMENT OF 40mV IS EQUVALENT TO AND 2 mV 15 EQUIVALENT TO 20mA OF LOOP CURRENT R RHOD BLACK SPATIUM 1 RED FOR VOLTAGE OUTPUT UNITS Vx THE OUTPUT S PLAT 10 RHOD BLACK PLATINUM TERMINAL IS ELECTRICALLY EQUIVALENT TO THE OUTPUT PURPLE constantan RED TERMINAL Par oz on cer PtAt er moo mv 1 1 EXTENSION WIRE i GROUND THERMOCOUPLE MILLIVOLT SERIES 450T mV TC ELECTRICAL CONNECTIONS ERIES 450T mV TC INPUT CONNECTIONS o ssor i 2 4501 349 AF AC INPUT POWER T 50 w Ac Lo OUTPUT IRON 4 WHITE VOLTAGE V5 NOTE INPUT GROUND TERMINAL IS CURRENT Y NOT CONNECTED INTERNALLY mV SIGNAL SOURCE CONSTANTAN RED TYPICAL 450T TRANSMITTER TRANSMITTER ZERO AND SPAN ADJUSTMENTS C D THERMOCOUPLE EXTENSION WIRE FOR INTERNAL TRANSMITTER THERMOCOUPLE INPUTS CONFIGURATION JUMPERS SEE DRAWING 4501 351 mV SIGNAL SOURCE OPTIONAL ACROMAG JUMPER INSTALLED SERIES 320 THERMOCOUPLE REFERENCE FOR IRON COSTANTAN NOTE TYPE OF TC REFERENCE MUST MATCH TC TYPE U2. Adjust the Span S pot until the output reads 20 000mA DC 3 Repeat steps 1 and 2 above until the readings converge The instrument is now calibrated Several mid point values should also be checked to verify proper operation of the transmitter Remember that the transmitter will be linear with millivolts and not temperature unless the transmitter includes a linearizer only then will it be linear with temperature NOTE If a transmitter is linearized the transmitter can only be trimmed to the range indicated on the label no other range of calibration will give acceptable results 4 After the above calibration procedure is complete install the transmitter PC Board assembly back into its case as described in the assembly procedure below Assembly Procedure for the 450T Plastic Housing NOTE The Model Serial Number label is attached to the left plastic side 1 Refer to drawing 4501 351 and line up the left plastic side with the board and terminal assembly Carefully but firmly press the pieces together 2 Align the pins of the center section with the side and press the pieces together 3 Now line up the right side of the housing with the left side and center assembly and carefully but firmly press the pieces together GENERAL MAINTENANCE This transmitter contains solid state components and requires no maintenance except for periodic cleaning and calibration verification When a failure is suspected a convenient met
3. 5 000 ohms or greater NOTE For process current output Y units the loop current may be monitored by placing a DVM between the Output S and Output terminal This connection measures the current drop through a precision 10 ohm resistor placed in series with the Output terminal 0 1 25ppm A DVM measurement of 40mV corresponds to 4mA and 200mV corresponds to 20mA of loop current For voltage outputs Vx units the Output S terminal is electrically equivalent to the Output terminal Output Limiting Voltage units Vx 120 of full scale output nominal Current unit Y 125 of full scale output 24mA nominal Output Ripple Less than 0 1 of the maximum output span POWER 1 115V AC 10 50 to 60Hz 0 05A Y units 0 020A Vx units 2 230V AC 10 50 to 60Hz 0 025A Y units 0 010A Vx units Power Supply Effect Less than 0 01 of output span for rated supply variations Input Impedance A Millivolt and Thermocouple Inputs Without TC Break Detection 1 0M ohm at 10mV span typical input current 10nA typical B Thermocouple Inputs Utilizing TC Break Detection 400K ohm at 10mV span input current 25nA typical 4 30nA maximum Thermocouple Models A Thermocouple Reference Junction Compensation standard on all thermocouple units and functional over the entire operating temperature range Includes unique circuitry to correct for reference junction non linearity o
4. IN Type J UP 100 to 400 C Jumper Configuration Example The following is the configuration for the example below configure your module as required by your application in a similar manner For our example configure the internal jumpers as follows A Thermocouple Type Type J B Zero Span Range Zero amp Span Jumpers both IN C Thermocouple Break Set Upscale an external jumper is required between the input and L also to activate 2 Transmitter Adjustment Procedure The calibration example below is for a thermocouple input which requires an ice point temperature reference Calibration of millivolt units is similar but a reference is not required To simulate a thermocouple input an Acromag Series 320 Reference an ice bath or other suitable reference must be used Refer to Drawing 4501 350 Narrow span and linearized units are already factory calibrated for best performance Connect transmitter as shown in the connection diagram Drawing 4501 349 For best results the input signal source should be adjustable from 5mV to 80mV DC settable to an accuracy of 0 1 or better and have a source resistance of 100 ohms or less The output voltage must be measured to 0 146 accuracy or better for proper results The Zero and Span adjustments are accessible on the front panel of the transmitter see Drawing 4501 349 for location The screwdriver blade used to adjust the potentiometers should not be more than 0 1 inc
5. adjustable as specified below except for linearized thermocouples and special ranges which are factory calibrated per customer specifications Both the span and zero adjustment capability are covered in two ranges and configured by internal jumpers on the circuit board The narrow span units MV3 TC3 are configured and calibrated per customer requirements 1 Millivolt Standard Span Span 5 to 55mV Zero 5 to 25mV MV2 Millivolt Wide Span Span 25 to 250mV Zero 25 to 125mV MV3 Millivolt Narrow Span Custom Calibration Unit handles millivolt spans from 3 to 5mV with the range factory calibrated to customer specifications TC1 Thermocouple Standard Span TC Types J K T E R S and B Non linearized TC Type is field selected via internal jumper J ISA Type J Iron Constantan Span 100 to 7609C Zero 100 to 4509C K ISA Type K Chromel Alumel Span 100 to 12009C Zero 100 to 6009C T ISA Type T Copper Constantan Span 100 to 4009C Zero 150 to 300 C E ISA Type E Chromel Constantan Span 100 to 7009C Zero 100 to 350 C R ISA Type R Plat Plat 13 Rhod Span 550 to 17509C Zero 0 1200 C 5 ISA Type S Plat Plat 10 Rhod Span 550 to 17509C Zero 0 to 1200 C B ISA Type B Plat 6 Rhod Plat 30 Rhod Span 1000 to 1820 C Zero 0 to 1000 C TC3 Thermocouple Narrow Span Custom Calibration Unit handles temperature equivalent millivolt spans from 3 to 5mV with the ra
6. power requirements Connect AC power as shown in the connection diagram Drawing 4501 349 Use suitable wire per applicable codes For 115V AC units connect the AC HOT power lead to the L1 terminal and the AC NEUTRAL power lead to the terminal marked W For 230V AC units connect the AC L1 power lead to the L1 terminal and AC L2 power lead to the terminal marked L2 Connect the AC GROUND lead to the G terminal the AC Ground G terminal is not connected internally 2 Grounding The transmitter housing is plastic and does not require an earth ground connection If the alarm is mounted in a metal housing a ground wire connection is required Connect the ground terminal of the metal housing Green Screw to a suitable earth ground using appropriate wire per applicable codes 3 Output Connect output per connection diagram refer to Drawing 4501 349 Load range is a function of the module s output type refer to Output in the preceding SPECIFICATIONS section The output is isolated from the input and power circuits 4 Input Connect input per connection diagram observe proper polarity see label for input type If unit is factory calibrated the calibration label indicates range of input NOTE The input circuit is electrically isolated from the output and power circuit allowing the input to operate up to 250V AC or 354V DC off ground on a continuous basis If your input is a thermocouple the thermo couple break circuit will be a
7. 0035 T Rail 35mm Type EN50022 Refer to Drawing 4501 348 for outline and clearance dimensions Shipping Weight 1 pound 0 45Kg packed CERTIFICATION Consult the factory for current information on the availability of agency e g Canadian Standards Association Factory Mutual etc approvals NCR No Certification Required INSTALLATION The transmitter is packaged in a general purpose type of enclosure Use an auxiliary enclosure to protect against unfavorable environments and locations Maximum operating ambient temperatures should be within 139F to 1859F 259C to 859C for satisfactory performance If the unit is factory calibrated it is ready for installation Connect as shown in the connection diagram of Drawing 4501 349 If the unit is not factory calibrated refer to the CALIBRATION section Mounting Mount transmitter assembly refer to Drawing 4501 348 for mounting and clearance dimensions DIN Rail Mounting Using suitable fastening hardware secure the DIN rail to the designated mounting surface A transmitter can be mounted to either the T or G Rail Installation of the transmitter to the rail depends on the type of DIN rail used Units can be mounted side by side on 1 6 inch centers if required Rail 35mm Type EN50022 To attach a transmitter to this style of DIN rail angle the top of the unit towards the rail and locate the top groove of the adapter over the upper lip of the rail Firmly push t
8. 047 0 296 0 299 100 5 268 4 095 4 277 6 317 0 647 0 645 150 8 008 6 137 6 702 9 787 1 041 1 029 200 10 777 8 137 9 286 13 419 1 468 1 440 250 13 553 10 151 12 011 17 178 1 923 1 873 300 16 325 12 207 14 860 21 033 2 400 2 323 350 19 089 14 292 17 816 24 961 2 896 2 786 400 21 846 16 395 20 869 28 943 3 407 3 260 450 24 607 18 513 32 960 3 933 3 743 1 002 500 27 388 20 640 36 999 4 471 4 234 1 241 550 30 210 22 112 41 045 5 021 4 732 1 505 600 33 096 24 902 45 085 5 582 5 237 1 791 650 36 066 27 022 49 109 6 155 5 751 2 100 700 39 130 29 128 53 110 6 741 6 274 2 430 800 33 277 61 022 7 949 7 345 3 154 900 37 325 68 783 9 203 8 448 3 957 1000 41 269 76 358 10 503 9 585 4 833 1200 48 828 13 224 11 947 6 783 1400 16 035 14 368 8 952 1600 18 842 16 771 11 257 1700 20 215 17 942 12 462 1750 20 878 18 504 13 008 1800 13 585 11 Series 450T User s Manual Millivolt Thermocouple Transmitter Calibration Example MODEL 450T TC1 Y 1 DIN NCR Input 100 C to 400 C Type J Thermocouple Upscale TC Break Output 4 to 20mA DC Power 115V AC NOTE To obtain the most accurate calibration of thermocouple transmitters apply power to the unit and allow several minutes for thermal stabilization before completing calibration 1 Set the input source to 5 268mV 100 C Adjust the Zero Z pot until the output reads 4 000mA DC 2 Set the input source to 21 846mV 400 C
9. 2 etc Consult the selection and ordering guide for standard range codes If the unit requires a custom range for the linearizer a 00 will be used and the unit s label will indicate the range Series 450T User s Manual Millivolt Thermocouple DESCRIPTION The Series 450T is an AC powered three way isolated DIN rail mounted transmitter family This model conditions millivolt or thermocouple input signals and converts this signal to a process current or voltage output Other 450T transmitters are available to condition voltage current RTD and frequency inputs In addition to three way isolation this model also provides high input impedance thermocouple reference junction compensation upscale or downscale thermocouple break detection and wide range zero and span adjustments Optionally a five segment linearizer is available to correct for thermocouple non linearity over a customer specified calibration range Series 450T transmitters are available for 115V or 230V AC power for DC power applications see the Acromag Series 350T transmitter family The versatile DIN rail mount can accommodate a variety of mounting applications See Drawing 4501 349 for a simplified schematic The Series 450T is another member of the Acromag flat pack DIN rail mounted instrument family It provides another functional component for a modular solution to varied field applications The Series 450T complements the Acromag Series 350T DC powered tra
10. Acromag User s Manual Series 450T Model 450T Millivolt Thermocouple C Powered Transmitters Table OF enini CD ae Page nttOQUCctlOfis 2 eap eter ter ee tte as se se oed iet He 2 ES 3 CCT CARLOS dst M a bd ados s sa tae Sap remand lesse aay ata teas ME 3 Tn Stal SERE ME M AA ME 7 Calibrations eoe e NOV Dis EE Q usss 8 Genera s Core 12 List of Drawings Electrical Connections MV TC Input No 4501 349 13 Calibration Connections MV TC Input No 4501 350 14 Configuration Jumper Location MV TC Input No 4501 351 15 Dimensions DIN Rail Mounting No 4501 3489 16 It is very important for the user to consider the possible adverse effects of power wiring component sensor or software failures in designing any type of control or monitoring system This is especially important where economic property loss or human life is involved It is important that the user employ satisfactory overall system design It is agreed between the Buyer and Acromag that this is the Buyer s responsibility Acromag Inc Tel 248 624 1541 30765 S Wixom Road P O Box 437 FAX 248 624 9234 Wixom Michigan 48393 7037 Copyr
11. SED 115V AC POWER mV TC CALIBRATION CONNECTIONS o aser 11008 4501 350 a0 ZERO AND SPAN JUMPER SELECTION Ems ug NE H 1 5 4 IN OUT QUT IN ZERO JUMPER SPAN JUMPER EXAMPLE CONFIGURATION ZERO JUMPER IN PIN 5 to 6 SPAN JUMPER IN PIN 1 to 2 E BOARD INTERCONNECTION POWER BOARD INPUT TYPE SELECTION TYPE B MILLNOLT PIN 1 to 2 TYPE J PIN 3 to 4 amp TYPE T PIN 5 to 6 RO R amp TYPE S PIN 7 to 8 AR TYPE E PIN 9 to 10 sem PONER OUTPUT 85 INPUT L THERMOCOUPLE BREAK ACTION UPSCALE PIN 11 to 12 ORT eer DOWNSCALE PIN 13 to 14 MODEL amp SERIAL NUMBER LABEL EXAMPLE CONFIGURATION TYPE J THERMOCOUPLE UPSCALE TO ACTIVATE BREAK DETECTION A JUMPER MUST BE PLACED BETWEEN THE INPUT 4 AND L TERMINALS BOARD INTERCONNECTION THERMOCOUPLE THERMOCOUPLE ONE JUMPER ONE JUMPER 4444 Acro ag 54 wik aic gt SEE Be Lee NOTE 1 REFER TO THE CALIBRATION SECTION OF THE 5 MANUAL FOR DETAILED INSTRUCTIONS Aa atten amet a ur T 450T mV TC JUMPER CONFIGURATION D 4507 1 1 45 1 351 NOTE PLASTIC ENCLOSURE SNAPS TOGETHER AT SEAMS WIRE INSERTION CLAMPS 12 PLACES G RAIL DIN MOUNTING RAIL DIN MOUNTING SHOWN THIS SIDE SHOWN THIS SIDE S DIN EN 50035 32m
12. ctivated by placing a short jumper wire between the Input and L terminals of the transmitter The type of Break Detection UP or DOWN is configured internal to the transmitter see CALIBRATION Section CALIBRATION A TRANSMITTER This section provides information for configuration and calibration If the unit was factory calibrated jumpers have been placed in their proper positions and verification of the calibration can be made per the Adjustment Procedure If the calibration of the unit is to be changed first go to the Shunt Block Configuration Procedure before proceeding with the Transmitter Adjustment Procedure Series 450T User s Manual Millivolt Thermocouple 1 Transmitter Shunt Block Configuration Procedure The Thermocouple transmitter is quite universal in that it can be configured for any of the standard Thermocouple types However the Zero and Span adjustment ranges thermocouple break detection UP or DOWN must be adjusted Before the adjustment procedure can proceed the jumpers have to be placed according to the requirements of the application refer to Drawing 4501 351 for details To gain access to the Configuration Jumpers first remove transmitter from the installation Second remove the circuit boards from the plastic enclosure as described in the Disassembly Procedure below Third configure jumpers shunt blocks as described in the Jumper Configuration procedure below NOTE calibration per t
13. h 2 54mm wide For optimum performance the span and zero capability of the unit is covered in two ranges which are programmed by internal jumpers on the circuit board 10 Series 450T User s Manual Millivolt Thermocouple The Span S and Zero Z jumpers change the range of adjustment of the span and zero potentiometers If the zero potentiometer range is found to be inadequate during calibration move the Zero Shunt from IN Default Position to OUT If the span potentiometer range is found to be inadequate during calibration move the Span Shunt from IN Default Position to OUT Only move this jumper when it is required For Shunt Block location refer to Drawing 4501 351 The voltage representing the temperatures at Zero and at Full Scale are set on the millivolt source to obtain the two calibration points Use Table 2 to convert each temperature to its equivalent millivolts Reference 09C for the thermocouple type used TABLE 2 Thermocouple Voltages vs Temperature Reference National Bureau of Standards Thermocouple Tables Temp Thermoelectric Voltage in Millivolts Ref Junction At 0 C C J K T E R S B 250 6 404 6 181 9 719 200 7 890 5 891 5 603 8 824 150 6 499 4 912 4 648 7 279 100 4 632 3 553 3 378 5 237 50 2 431 1 889 1 819 2 787 0 0 000 0 000 0 000 0 000 0 000 0 000 0 000 50 2 585 2 022 2 035 3
14. he Adjustment Procedure should be performed before the circuit boards are reassembled within the plastic enclosure Disassembly Procedure for the 450T Plastic Housing The plastic housing has no screws it snaps together A flat head screwdriver Acromag 5021 216 or equivalent is needed to pry the housing apart as described in the following steps CAUTION Do not push the screwdriver blade into the housing more than approximately 0 1 inches while prying it apart Handling of the printed circuit board should only be done at a static free workstation otherwise damage to the electronics could result 1 To begin disassembly refer to Drawing 4501 351 place the screw driver at point A left side of the alarm While pressing the blade into the seam use a twisting motion to separate the sides slightly Repeat this operation at point B 2 Now that the two pieces have been partially separated use the screw driver blade to work the left side of the package loose by working around the alarm and carefully prying the sides further apart Repeat this action until it is easy to remove the left side from the plastic pins holding the pieces together 3 Repeat this operation for the right side starting at points C and D CAUTION If the two PC boards become separated while taking the package apart re align the boards making sure that both interconnection headers are aligned with their mating sockets and carefully push the boards toget
15. he unit towards the rail until it snaps solidly into place To remove a transmitter insert a screwdriver into the lower arm of the connector and pull downward while applying outward pressure to the bottom of the unit Rail 32mm Type EN50035 To attach a transmitter to this style of DIN rail angle the unit so that the upper groove of the adapter hooks under the top lip of the rail Firmly push the unit towards the rail until it snaps solidly into place To remove a transmitter pull the lower part of the unit outward until it releases from the rail and lift the unit from the rail Electrical Connections Regardless of the mounting configuration employed the electrical connections are basically identical The wire size used to connect the unit to the control system is not critical All terminal strips can accommodate wire from 14 26 AWG Strip back the insulation 1 4 inch on each lead before installing it into the terminal block Series 450T User s Manual Millivolt Thermocouple Input wiring may be either shielded or unshielded twisted pair Output wires should be twisted pair Since common mode voltages can exist on signal wiring adequate wire insulation should be used and proper wiring practices followed It is recommended that the output and power wiring be separated from the signal wiring for safety as well as for low noise pickup 1 Power Refer to Drawing 4501 349 for power connections The label on the unit specifies the AC
16. her Jumper Configuration Shunt Blocks Shunt blocks are provided to accommodate in field configuration changes In case of misplacement additional shunt blocks may be ordered from the factory When ordering additional shunt blocks refer to Acromag Part Number 1004 332 Series 450T User s Manual Millivolt Thermocouple 1l THERMOCOUPLE INPUT Determine the thermocouple type that you want to configure the transmitter for Refer to table on Drawing 4501 351 for proper jumper shunt position 2 ZERO amp SPAN RANGE The Zero and Span shunt blocks should initially be placed in their default position IN for each case see Drawing 4501 351 During the process of Calibration the need to change these jumper positions will be determined 3 THERMOCOUPLE BREAK DETECTION Determine whether Up Down or No Break detection is required in your application see Drawing 4501 351 for proper jumper shunt position NOTE This break circuit is activated by a small jumper wire connected between the Input and L terminals if TC break detection is not desired then do NOT install jumper This jump wire is not installed on millivolt units NOTE For TC units it is important to calibrate the transmitter with the TC break configured per your requirements Changing the TC break configuration afterward will affect your calibration 4 IMPORTANT Mark the Transmitter Configuration on the calibration label on the enclosure For Example
17. hod for identifying a faulty transmitter is to exchange it with a known good unit It is highly recommended that a non functioning transmitter be returned to Acromag for repair since Acromag makes use of tested and burned in parts and in some cases parts that have been selected for characteristics beyond that specified by the manufacturer Further Acromag has automated test equipment that thoroughly checks the performance of each transmitter 12 VOLTAGE V0 5 CURRENT OUTPUT ACINPUT POWER 20Pnow R i HOA ZERO SPAN SEE NOTE 1 w ac Lo ADJUST AUST c crouno crouno NOTE INPUT GROUND TERMINAL IS NOT CONNECTED INTERNALLY 7 LOW PASS SIGNAL OUTPUT FILTER AMPLIFIER AMPLIFIER SIGNAL 0 L ISOLATION d Q POWER OPTIONAL GROUND i OPTIONAL i LINEARIZER TC UNITS FOR INTERNAL TRANSMITTER AC POWER CONFIGURATION JUMPERS ISOLATION SEE DRAWING 4501 351 wc INPUT H POWER 115VAC 230VAC Q wc SUPPLY SUPPLY W INPUT D NC ISOLATION NC o Q 599659 SERIES 45 T SIMPLIFIED SCHEMATIC mV TC INPUT SEE BELOW NOTE ANSI STANDARD THERMOCOUPLE COLOR CODE 1 FOR PROCESS CURRENT OUTPUT UNITS Y A PRECISION INPUT coLoR NPUT COLOR 10 OHM RESISTOR IS PLACED IN SERIES WITH THE OUTPUT MEASURING THERMOCOUPLE IN PUT CON NECTIONS WHITE CONSTANTAN TERMINAL
18. ight 1993 Acromag Inc Printed in USA Data and specifications subject to change without notice 8500 344 A93J000 Series 450T User s Manual Millivolt Thermocouple INSTRUCTIONS SERIES 450T Millivolt Thermocouple AC Powered Transmitters INTRODUCTION These instructions cover the model types listed in Table 1 below Supplementary sheets are attached for units with special options or features Table 1 A Model Number Format 450T Input Output Power Mtg Certif Calibration B Typical Model Number 450T TC1 Y 1 DIN NCR C Series Input Output Power Mounting Certif Cal 450T 1 MV2 MV3 Y VO 1 2 DIN NCR Approval Blank C V5 TCl TC3 JLxx KLxx TLxx ELxx RLxx SLxx BLxx Notes Table 1 The MV1 and can be ordered with or without factory calibration C option All other input types except custom linearizer ranges automatically include calibration to the customer s specification no C needed Any customer specified calibration information will be included on a separate calibration label on the unit For thermocouple units the TC type input calibration and TC Break Detection UP DOWN or NONE must be specified Consult the factory for current information on agency e g Canadian Standards Association etc approvals xx Range Code Number Standard range code will have a number 01 1
19. m DIN EN 50022 35mm RAIL DIN MOUNTING SHOWN DIN EN 50035 32mm RAIL DIN MOUNTING SHOWN HERE DIN EN 50022 35mm SCREWDRIVER SLOT FOR REMOVAL FROM T RAIL NOTE ADJACENT UNITS CAN BE MOUNTED ON 1 6 INCH 40mm CENTERS ENCLOSURE DIMENSIONS FOR DIN RAIL MOUNTING EE Acto 89 wow now rev ex or Tar NOTE ALL DIMENSIONS ARE IN INCHES MILLIMETERS SERIES 450 HOUSING DIN RAIL MOUNT opm ser ren grasos
20. nge factory calibrated to customer specifications NOTE The thermocouple type and TC Break UP DOWN or NONE must also be specified The linearization option is not available or needed The following group of input types include the linearization circuit The standard span transmitter is linearized per the customer specified calibration range The range code xx in Input field below is used to represent the input range required Consult the Selection and Ordering Guide for standard range codes Custom range codes are also available consult the factory JLxx ISA Type J linearized KLxx ISA Type K linearized TLxx ISA Type T linearized ELxx ISA Type E linearized RLxx ISA Type R linearized SLxx ISA Type S linearized BLxx ISA Type B linearized Series 450T User s Manual Millivolt Thermocouple Isolation Three way isolation is provided between input output and power for common mode voltages up to 250V AC or 354V DC off ground on a continuous basis will withstand 1500V AC dielectric strength test for one minute without breakdown This complies with test requirements outlined in ANSI ISA S82 01 1988 for the voltage rating specified OUTPUT Process Current or Voltage output Voltage outputs are designed to provide true voltage output with zero volts included and to be stable with capacitive loads Y 4to 20mA DC R Load 0 to 600 ohms V0 0 to 10V DC into 10 000 ohms or greater V5 0 to 5V DC into
21. nsmitters providing the same input conditioning for AC powered applications The modular approach of this design and companion Acromag flat pack modules allows additional transmitters input modules isolators and alarms to be easily integrated as required The 450T transmitter is EMI and RFI protected operates over a wide temperature range and features excellent temperature coefficients which minimize the effects from harsh plant environments In addition the safe compact rugged and reliable design of this transmitter allow it to be used in control room or field locations Input wiring is inserted in the bottom of the unit while the output and power wiring is inserted at the top of the unit Screws to secure the wiring are located on the front panel Connectors are screw clamp type and accept wire size up to 14 AWG SPECIFICATIONS Function This AC powered transmitter conditions either millivolt or thermocouple input signals and converts this signal to a process current or voltage output The unit provides three way isolation between the input output and power circuits Wide range zero and span adjustments utilize 22 turn potentiometers accessible from the front of the unit Optional 115V or 230V AC power may be selected This transmitter is DIN rail mounted MODEL SERIES 450T Color coded with a white label Series 450T User s Manual Millivolt Thermocouple INPUT Millivolt and Thermocouple Input span and zero ranges are
22. put span per 0 045 per for narrow span units less than or equal to 5mV of span Specification includes the combined effects of zero and span over temperature Bandwidth 3dB at 3 Hz typical Response Time For a step input the output reaches 98 of output span in 300ms typical Noise Rejection Common Mode 130dB at 60 Hz 100 ohm unbalance typical Normal Mode 30dB at 60 Hz 100 ohm source typical RFI Resistance Less than 0 5 of output span with RFI field strengths of up to 10V meter at frequencies of 27 151 and 467 MHz EMI Resistance Less than 0 25 of output span effect with switching solenoids or commutator motors Surge Withstand Capability SWC Input Output terminations rated per ANSI IEEE C37 90 1978 Unit is tested to a standardized test waveform that is representative of surges high frequency transient electrical interference observed in actual installations Construction Printed Circuit Boards Military grade FR 4 epoxy glass circuit board Terminals Compression type wire size 14 AWG maximum Case Self extinguishing NYLON Type 6 6 polyamide thermoplastic UL94 V 2 color black General Purpose NEMA Type 1 enclosure Printed Circuit Board Coating Fungus resistant acrylic conformal coat Mounting Position Position insensitive Series 450T User s Manual Millivolt Thermocouple MOUNTING DIN General Purpose Housing DIN Rail Mount G amp T rails G Rail 32mm Type EN5
23. ver ambient temperature Reference Junction Compensation Ambient Temperature Effect 0 029C 9C typical B Thermocouple Break Detection user selectable for Upscale Downscale or None Up or downscale break detection is selectable via an internal jumper and activated via an external jumper Series 450T User s Manual Millivolt Thermocouple Reference Test Conditions Input 0 10mV with a 100 ohm resistive source Output Y units 4 20mA DC 500 Ohm load Output units 0 10V DC into 10K ohms or greater Ambient 779F 259C 115V AC supply Accuracy Better than 0 1 of calibrated span or 0 01 mV whichever is greater This error includes the combined effects of transmitter repeatability hysteresis terminal point linearity conformity instead of linearity for thermocouple inputs non linearized and adjustment resolution Does not include sensor error Linearization xLxx Option Optional linearized thermocouple units contain a five segment linearizer to correct for thermocouple non linearity This option offers low cost linearization and provides a minimum 10 to 1 improvement 0 1 in the linearity curve for the specified range of type J K T R S E and B ISA rated thermocouples Ambient Temperature Range 139F to 1859F 259C to 85 C Ambient Temperature Effect Less than 0 01 of output span per OF 0 018 per C over the ambient temperature range for reference test conditions 0 025 of out
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