MS2700E Manual - Alabama Specialty Products, Inc.
Contents
1. 17 C Instrument Repalt FOFITL to rete eee sek KATANA LG te 18 AppendbcA Drawings eee e tette reves 19 Control Drawing Hazardous Area Wiring enne 20 Safe Area Wiring Diagralm 5 7 cte iste Cose hc crm trt eve ted eie AL APA 21 Appendix B Revision History i t ie eet eerte vad da 22 Introduction A General Description The model MS2700E transmitter is a high resolution instrument designed to measure and transmit corrosion metal loss data from an Electrical Resistance ER probe to a plant control system or other recording device The MS2700E transmitter utilizes RS 485 communication which allows multiple units to be daisy chained simplifying installation and reducing associated costs The use of the RS 485 protocol also allows the transmitter to be placed great distances from the control system or recorder while maintaining good noise rejection Practical distances can be up to 4000 feet Additionally the MS2700E transmitter offers user selectable RTU or ASCII communication protocols making it highly versatile The MS2700E transmitter is compatible with all types of Metal Samples ER probes as well as any standard ER probe from other manufacturers Unlike competitors products the MS2700E transmitter does not require factory modification to accommodate different probe types The probe type c2. asini 6 c Safe Area Installatiori rect cte eren etae na hen AA 7 d Hazardous Area 7 3 Set p and Operation uere ere ci ee e eie aces eee 9 Probe Settings er E 9 b RS 485 Communication Settings a 10 i Baud Rate and Default Communication 11 ii Device Address iie ntt eere rie WA nee ri eaa 11 Communication Protocols 1 100 11 iv Termination Resistor 04 11 v Data Registers eee pe e e 11 c Calibration and 12 i Calibration S D 12 ii Testing output zero and span a 12 iii Testing the MS2700E transmitter with the Meter Prover 12 ds Interpreting Data et ete ores aon 13 iy Metali LOSS to ad gue iota datos 13 ii Calculating Corrosion Rate e aaa aaa okaza nnne nnn nnn 14 e Commissioning voee eet Nka 15 C Maintetiance cett cr eer e co Pere ee tet i 15 D Troubleshooting eere tenete teri rete edite di es 16 Servicec and Warranty Information t eere eee nre ee vec dete 17 Warranty os TEL 17 B Obtaining Service and Returning the Instrument for
3. different than above Reason for Return Provide as much detail as possible Attach additional pages if required Invoice Instructions For non warranty repairs W Invoice me for the repair Reference Requires an open account with Metal samples PO D Contact me for credit card information For security purposes do not list credit card information on this form 18 Appendix A Drawings A Wiring Diagrams Control Drawing Hazardous Area Wiring Diagram Safe Area Wiring Diagram 19 HAZARDOUS AREA SAFE AREA CHKD MS2700E HIGH RESOLUTION ER RS 485 TRANSMITTER MS2800E ULTRA RESOLUTION ER RS 485 TRANSMITTER z M II pd CN1 INPUT SUPPLY TERMINAL Ill AMON 1 88 2mA 5 MAXIMUM OUTPUT ENTITY PARAMETERS RENC 0 52W PSD1001 ra AT CN2 PROBE TERMINALS dA APA CERTIFIED SAFETY ISOLATOR Ug 5 0Vde JE ow L 0 Ug 23 6Vdc ly 88 2mA 0 519W NE lo 503 F SG 0 7W O gt CN1 RS 485 TERMINAL EACH LINE e CN2 U 3 7Vdc p 15 21 5 30Vdc 225 VC o OVde J 0 206W CN1 INPUT SUPPLY TERMINAL RS 485 TERMINAL AND ma CN2 PROBE TERMINAL COMBINED 2 U 23Vde a Probe Cable Assembly 538mA Sold Separately P 0 7W NG o 20 30Vdc C 68uF vc o OVdc ER Probe Simple Device L 0 Sold Separately Co 32uF OPTIONAL D
4. 4 40024 DAC Value 40026 Probe Switch Setting Table 5 Modbus Data Registers 11 c Calibration and Testing i Calibration The MS2700E transmitter is fully calibrated when shipped from the factory The calibration settings are fixed to avoid accidental change which could result in erroneous data No field calibration is required However it is important to test the unit upon installation and during periodic maintenance inspections to ensure the unit is operating properly ii Testing output zero and span The MS2700E transmitter Probe Selection Switches page 9 offer three test settings that allow the unit to be placed into various diagnostic modes as follows 1 Zero Output Forces a digital output of O 2 Maximum Output Forces a digital output of 65535 3 Full Scale Sweep Causes the output to continually cycle from O up to 65535 These test modes can be useful when troubleshooting communication problems between the transmitter and the DCS PLC system iii Testing the MS2700E transmitter with the Meter Prover A Meter Prover is provided to allow routine checks of the MS2700E transmitter The Meter Prover simulates a Wire Loop type probe at a fixed value To test the unit with the Meter Prover 1 Disconnect power 2 Disconnect the MS2700E transmitter from the probe or if the unit is remote mounted disconnect the probe extension cable from the probe 3 Connect the Meter Prover to the probe connector stem or t
5. Europe and Worldwide ATEX and IECEx X see Special Conditions page 7 Included Accessories Conforms to ANSI UL Std 60079 0 60079 11 61010 1 CAN CSA Std E66079 0 E60079 11 amp CAN CSA C22 2 No 61010 1 For Stand Alone Use For Multi Drop Use Class ZoneO AEx ia IIC T4 Ga Class ZoneO AEx ia IIB T4 Ga Zone 20 AEx ia 130 C Da Zone 20 AEx ia IIIB T130 C Da 20 lt lt 70 20 lt lt 70 Stand Alone Use II 1 G Ex ia IIC T4 Ga For Multi Drop Use I 1 G Ex ia IIB T4 Ga 11 D Ex ia IIICT130 C Da I 1 D Ex ia T130 C Da 20 lt Ta lt 70 20 lt lt 70 ATEX Certificate No ITS14ATEX28092X IECEx Certificate No IECEx ITS 14 0052X 3 1M Wiring Harness Meter Prover Operations Manual Optional Accessories Probe Extension Cable Remote Mounting Hardware Il Installation and Operation A Receiving the MS2700E Transmitter Check the MS2700E Transmitter for any shipping damage when it is first received When the unit is unpacked verify that the following items are included e Transmitter e Wiring Harness e Meter Prover e User s Manual e Probe Cable optional for remote mount only e Mounting Hardware optional for remote mount only In the event of shipping damage quantity shortage or missing items it is recommended that the event is documented immediately and that digital photographs are taken Any shortages or mi
6. EZ 152 METAL SAMPLES RD 2 MUNFORD AL 36268 Control Drawing PHONE 256 358 4202 Samp es FAX 256 358 4515 MS2700E MS2800E ER RS 485 Transmitter Multi Drop A DIVISION OF ALABAMA SPECIALTY PRODUCTS INC SCALE No 1 1 EXWDB 000092 TOT NO DWG NO E CHKD MS2700E HIGH RESOLUTION ER RS 485 TRANSMITTER MS2800E ULTRA RESOLUTION ER RS 485 TRANSMITTER DESCRIP TION aaa CN1 INPUT SUPPLY TERMINAL 23Vdc 88 2 0 52W G 0 L 0 DATE MAXIMUM OUTPUT ENTITY PARAMETERS AT CN2 PROBE TERMINALS Up 5 0Vde lo 503MA 0 7W lt lt lt EIE CHKD CN1 RS 485 TERMINAL AT EACH LINE 3 7Vdc 225mA 0 206W CN1 INPUT SUPPLY TERMINAL RS 485 TERMINAL AND LJ Probe Cable Assembly uan ue TERMINAL COMBINED Sold S tel Sold Separately 538mA 0 7W C 68uF DESCRIPTION EE L 0 ER Probe Simple Device i Co 32uF Sold Separately JI Lo 0 14mH POWER SUPPLY UNIT 21 5 30 Vdc DATE CN1 RS 485 TERMINAL AND CN2 PROBE CONNECTOR COMBINED C 68uF L 0 Co 32uF Lo 0 14mH CHKD ER Probe Simple Device Sold Separately RS 485 SIGNAL INTERFACE MS2700E MS2800E PC PLC DCS 2 NOTE PRE APPROVED POWER SUPPLY UNIT OR APPROVED EQUIPMENT WITH THE FOLLOWING MAXIMUM INPUT PARAMETERS SHOULD BE USED DESCRIPTION 1 J2 TERMINALS U 23 6Vdce 88 2mA AND P 0 51
7. subject to damage from normal wear misuse or abuse or failure to follow use and care instructions All damaged items are to be shipped at Purchaser s expense to and from Metal Samples which shall have the right to final determination as to the existence and cause of a defect The foregoing shall constitute the sole and exclusive remedy of any purchaser of Metal Samples products for breach of warranty and IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESSED IMPLIED OR STATUTORY INCLUDING THE IMPLIED WARRANTIES OR MERCHANTABILITY AND FITNESS IN NO EVENT SHALL METAL SAMPLES BE LIABLE FOR SPECIAL OR CONSEQUENTIAL DAMAGES OR FOR ANY DELAY IN THE PERFORMANCE OF THIS WARRANTY DUE TO CAUSES BEYOND ITS CONTROL The technical information and suggestions contained herein are believed to be reliable but they are not to be construed as warranties since conditions of use are beyond our control B Obtaining Service and Returning the Instrument for Repair If you experience problems with your instrument please contact the factory at 256 358 4202 and ask for customer support for instrumentation Our customer support department will assist you in troubleshooting your instrument Most issues can be resolved over the phone but in some cases it may be necessary to return your instrument for further evaluation and repair In this case please obtain a Return Materials Authorization RMA number from the sales person or support technician This RMA numbe
8. 485 Configuration Switches See Table 3 below Power Connector 12 Data Connector 19 Figure 5 Connector and Switch Details Wire Loop Q N N Q ELE Tube Loop Flush On t Off J On t Off J Cylindrical Off On t Off Zero Output 0 On 1 On 1 Off Maximum O Switch 1 eue KAB 2 tie om Full Scale Sweep On 1 Off 1 Off Off J Table 2 Probe Switch Settings Cylindrical probe setting is illustrated 9 b RS 485 Communication Settings The RS 485 configuration switches are located on the top right corner of the main board as illustrated in Figure 5 These are used to set the instrument address baud rate communication protocol and to enable the termination resistor Table 3 gives the switch settings for each of these parameters and they are explained in more detail below Position Communication Position Protocol 8 ASCII On 1 RTU Off Termination Position Resistor 10 Active On 1 Inactive Off NotUsed Table 3 RS 485 Configuration Switch Settings 10 i Baud Rate and Default Communication Parameters The default communication parameters for the MS2700E transmitter are provided in Table 4 below If necessary the baud rate can be changed using Positions 1 and 2 of Sw
9. 9W CN1 A amp B DATE MS2700E MS2800E 2 J9 TERMINALS Ui 3 7Vdc 225 AND P 0 206W CN1 D 8 E 08 04 14 GROUND CONNECTION ENCLOSURE AND CONNECTOR JEEW BP _ DWG TYPE DATE ENGINEERED BY DRAWN BY CHECKED BY Qc BY SE se ew m sop Metal ER 152 METAL SAMPLES MUNFORD AL 36268 Safe Area Wiring ALABAMA SPECIALTY PRODUCTS INC 2001 samples PHONE 256 358 4202 MS2700E MS2800E ER RS485 THIS DOCUMENT INCLUDING THE INFORMATION HEREIN IS THE PROPERTY OF ALABAMA FAX 256 358 4515 3 Transmitter BE REPRODUCED OR COPIED IN WHOLE OR IN PART NOR MAY IT BE FURNISHED TO OTHERS WITHOUT EXPRESS WRITTEN CONSENT FROM ASPI NOR MAY IT BE USED IN ANY WAY THAT THE NETWORK A DIVISION OF ALABAMA SPECIALTY PRODUCTS INC SAT TOT NO DWG NO IS OR MAY BE HARMFUL TO ASPI THIS PRINT WLL BE RETURNED UPON REQUEST TO ASPI p RESP WDB 000076 Appendix B Revision History Revision Date Changes 0 8 15 2014 Initial Release A 9 17 2014 Revised entity parameters hazardous area installation control drawing and safe area installation drawing B 10 9 14 Revised entity parameters and hazardous area installation control drawing C 1 15 15 Separate gas group rating listed for Stand Alone and Multi Drop operation Revised hazardous area installation control drawing D 2 4 15 Revised entity parameters hazardous area installation control drawings and safe area installatio
10. CIALTY PRODUCTS INC 2001 THIS DOCUMENT INCLUDING THE INFORMATION HEREIN IS THE PROPERTY OF ALABAMA SPECIALTY PRODUCTS INC ASPI IT CONTAINS PROPRIETARY INFORMATION AND MAY NOT BE REPRODUCED OR COPIED IN WHOLE OR IN PART NOR MAY IT BE FURNISHED TO OTHERS WITHOUT EXPRESS WRITTEN CONSENT FROM ASPI NOR MAY IT BE USED IN ANY WAY THAT IS OR MAY BE HARMFUL TO ASPI THIS PRINT WILL BE RETURNED UPON REQUEST TO ASPI 1 1 EXWDB 000077 TOT NO DWG NO E HAZARDOUS AREA MS2700E HIGH RESOLUTION ER RS 485 TRANSMITTER MS2800E ULTRA RESOLUTION ER RS 485 TRANSMITTER pd CN1 INPUT SUPPLY TERMINAL 23Vdc A V N 88 2 MAXIMUM OUTPUT ENTITY PARAMETERS PENG p 0 52W CN2 PROBE TERMINALS P DO G 0 Uo 5 0Vdc E D L 0 lo 503MA F SG Po 0 7W CN1 RS 485 TERMINAL AT EACH LINE CN2 3 7Vdc 225 0 206W ka e CN1 INPUT SUPPLY TERMINAL RS 485 TERMINAL AND CN2 PROBE TERMINAL COMBINED U 23Vdc Probe Cable Assembly 538mA Sold Separately P 0 7W C 68uF L 0 ER Probe Simple Device 32uF Sold Separately Lo 0 14mH CN1 RS 485 TERMINAL AND CN2 PROBE CONNECTOR COMBINED C 68uF LL 20 Co 32uF Lo 0 14mH ER Probe Simple Device MS2700E MS2800E Sold Separately 2 NOTE 1 PROBE DIELECTRIC RATING 500V R M S DO NOT EXCEED 2 THE MAXIMUM EXTERNAL CAPACITANCE THAT BE CONNECTED BETWEEN
11. D Metal samples MS2700E High Resolution ER RS 485 Transmitter Operator s Manual metal Samples Monitoring Systeme F 700 mign D sens eds 82 anay ng 3 S N ki Ex Et In Dani c AE eC mkita m z Zone 25 e wo Da z410 25025457 d A 5 mertek input Supply mare qi 255496 e 5 382 mA po Mew Metal Samples Company A Division of Alabama Specialty Products Inc 152 Metal Samples Rd Munford AL 36268 Phone 256 358 4202 Fax 256 358 4515 E mail msc alspi com Internet www metalsamples com Table of Contents Tiia a E 1 A General 1 B Principles 1 C Technical 3 II Installation and 4 A Receiving the MS2700E transmitter a 4 Installation nasa Aiaka e diua 4 1 Physical Mounting and Probe 4 a Direct Probe Mounting nennen enne at nnns nennen nnn nis 4 b Remote eE EA 5 2 Power and Data 65 2 2 0 eene enhn enne 5 a Making Connections 5
12. RS 485 TERMINALS CN1 AND PROBE TERMINALS CN2 IS 32yF 3 THE MAXIMUM EXTERNAL INDUCTANCE Lg THAT CAN BE CONNECTED BETWEEN RS 485 TERMINALS CN1 AND PROBE TERMINALS CN2 IS 0 14mH MS2700E MS2800E ALABAMA SPECIALTY PRODUCTS INC 2001 THIS DOCUMENT INCLUDING THE INFORMATION HEREIN IS THE PROPERTY OF ALABAMA SPECIALTY PRODUCTS INC ASPI IT CONTAINS PROPRIETARY INFORMATION AND MAY NOT MAXIMUM OF 32 UNITS CAN CONNECTED TO BE REPRODUCED OR COPIED IN WHOLE OR IN PART NOR MAY IT BE FURNISHED TO OTHERS WITHOUT EXPRESS WRITTEN CONSENT FROM ASPI NOR MAY IT BE USED IN ANY WAY THAT THE NETWORK IS OR MAY BE HARMFUL TO ASPI THIS PRINT BE RETURNED UPON REQUEST TO ASPI SAFE AREA z M II PSD1001 CERTIFIED SAFETY ISOLATOR Uo 23 6Vdc lo 88 2mA 0 519W O VE 21 5 30Vde lt 0Vdc DESCRIP TION o 20 30Vdc 0Vdc OPTIONAL D SUB 9 PIN DATA CONNECTOR D1061 CERTIFIED RS485 ISOLATING REPEATER Uo 3 7Vdc lo 225mA Po 0 206W RS 485 SIGNAL INTERFACE PC PLC DCSJ NOTE PRE APPROVED POWER SUPPLY UNIT OR APPROVED EQUIPMENT WITH THE FOLLOWING MAXIMUM INPUT PARAMETERS SHOULD BE USED 1 J2 TERMINALS Ui 23 6VdC l 88 2mA AND P 0 519W CN1 A amp B 2 J9 TERMINALS Ui 3 7Vdc 1 225 AND P 0 206W CN1 D amp E DWG TYPE DATE __ crt ons LE ENGNEERED BY DRAWN BY CHECKED BY Qc BY EI Few Metal
13. SUB 9 PIN Pa Lo 0 14mH DATA CONNECTOR 5 CN1 RS 485 TERMINAL AND CN2 PROBE CONNECTOR C 68uF 41126 L 0 KAPA 32uF 2 Lo 0 14mH PARS 01061 CERTIFIED RS485 ISOLATING REPEATER e 5 pe E az ER Probe Simple Device 3 7Vdc lo 225mA 0 206W alog Sold Separately E E 8 glao REI RS 485 SIGNAL INTERFACE mm e PC PLC DCSJ ej qla Pa kag 15 NOTE E EA 1 PROBE DIELECTRIC RATING 500V R M S DO NOT EXCEED Sle 26 2 THE MAXIMUM EXTERNAL CAPACITANCE THAT CAN BE E 5 CONNECTED BETWEEN RS 485 TERMINALS CN1 AND 5 g PROBE TERMINALS 2 IS 32yF NOTE PRE APPROVED POWER SUPPLY UNIT OR APPROVED EQUIPMENT WITH 8 JHEMBAIMUM EATERNAE INDUC TANCE Lo THAT CAN BE THE FOLLOWING MAXIMUM INPUT PARAMETERS SHOULD BE USED CONNECTED BETWEEN RS 485 TERMINALS CN1 AND a 5 PROBE TERMINALS 2 IS 0 14mH 1 J2 TERMINALS 23 6 l 88 2mA AND P 20 519W CN1 A amp B fz EIN Gel ba bad SSI5 3 2 J9 TERMINALS U 3 7Vdc 225 AND P 0 206W CN1 D 8 E 3 81819 SURE DWG TYPE DATE ENGNEERED BY DRAWN BY CHECKED BY GC BY Metal ep Few eke sor tf 52 METAL SAMPLES RD TE MUNFORD AL 36268 Control Drawing samples PHONE 286 358 4202 MS2700E MS2800E ER RS 485 Transmitter Stand Alone A DIVISION OF ALABAMA SPECIALTY PRODUCTS INC SCALE ALABAMA SPE
14. a wiring The safety barriers must be located in the safe area near the boundary between the safe and hazardous areas The safety barrier will repeat the signal current generated by the Transmitter and will relay the signal to the data receiving station Caution When a safety barrier is used with the MS2700E transmitter the transmitter wiring connections must be connected to the safety barrier s hazardous area terminals All other connections must be made to the barrier s safe area terminals The type of repeater safety barriers used with the MS2700E transmitter depends on the specific classification of the hazardous environment in question However the entity parameters must match those of the MS2700E transmitter CAUTION For hazardous area installations the maximum inductance and capacitance of the field wiring between the safety barrier and the transmitter cannot exceed the entity parameters of the selected barrier 3 Setup and Operation a Probe Settings The probe selection switches are located on the top left corner of the main board as illustrated in Figure 5 below These switches are used to set the ER probe type They also allow the instrument to be placed into several test modes which output fixed values allowing verification of the output signal Table 2 gives the switch settings for each probe type and the various test modes Probe Cable Connector Switch 1 Probe Selection Switch See Table 2 below Switch 2 RS
15. an be easily changed at any time using the on board probe selection switches see page 9 The MS2700E transmitter is available as direct mount standard or remote mount The direct mount version is mounted directly to the ER probe This option offers the simplest installation and minimizes noise problems The remote mount option allows the MS2700E transmitter to be mounted independently from but in close proximity to the ER probe It is then connected to the probe via a short probe cable See pages 5 and 6 for mounting diagrams and specifications B Principles of Operation The MS2700E transmitter operates on the Electrical Resistance ER technique and is used in conjunction with an ER probe The ER probe utilizes a resistive sensing element manufactured from the material of interest or a close approximation which is exposed to a corroding environment This is called the Exposed or Corroding Element The resistance of the Exposed Element is directly related to its thickness so as the element corrodes the resulting loss of metal causes a proportional increase in the element s resistance The probe also contains an internal Reference Element which is used to compensate for the influences of temperature on the Exposed Element The MS2700E transmitter is designed to work with any standard ER probe but it is recommended that Cylindrical and Large Flush type probes be used to ensure optimum performance Their physical design places the Reference E
16. and refer to Table 2 on page 9 to verify the appropriate switch settings Perform a visual inspection of the circuit boards to look for any signs of mechanical or electrical damage Ensure that all electrical cables and wiring are in good condition Ensure that all electrical contacts are secure and free of corrosion Ensure that there is adequate supply voltage at the power connector Verify that the supply voltage polarity is correct If there is insufficient supply voltage on the power connector check the safety barrier if applicable for a blown fuse or any other failure Test the MS2700E transmitter using the supplied Meter Prover see page 12 These basic checks should indicate the source of any problem probe power supply wiring etc If itis determined that the MS2700E transmitter is malfunctioning or if you need further assistance in troubleshooting contact Metal Samples Technical Support CAUTION If the MS2700E transmitter shows any signs of damage remove it from service immediately and consult the factory 16 Ill Service and Warranty Information A Warranty Metal Samples warrants that any part of the model MS2700E transmitter and accessories which proves to be defective in material or workmanship within one year of the date of original shipment to Purchaser will be repaired or replaced at Metal Samples option free of charge This warranty does not cover 1 probe assemblies 2 items expendable in nature or 3 items
17. ation The MS2700E transmitter is approved for use in hazardous areas but can be used in non hazardous areas as well For basic safe area wiring information refer to the circuit diagram shown on page 21 CAUTION When used in non hazardous areas equipment must be supplied with a pre approved power supply unit or approved equipment which meets the entity parameters shown below The pre approved equipment must be certified to the electrical safety standards for equipment in ordinary locations for example EN IEC CSA UL 61010 1 or EN IEC CSA UL 60950 1 Failure to meet these requirements will void the intrinsic safety certification of the equipment and prohibit its future use in hazardous areas d Hazardous Area Installation CAUTION This section provides general guidelines for hazardous area wiring However regardless of anything stated here the MS2700E transmitter must be installed in full compliance with the control drawing located on page 20 and all of the local area requirements CAUTION When used in Hazardous areas equipment must be supplied with a pre approved power supply unit or approved equipment via a certified intrinsically safe barrier or a galvanically isolated barrier with the following entity parameters Input supply terminal RS 485 channel CN1 and connector CN2 Combined Connector CN1 pins A amp B J2 on PCB Ci 68uF Ui 23 Vdc Li 20 88 2 mA 32uF 0 52 W Lo 0 14 mH Ci 0 Li 0 Input suppl
18. ds of interest This is covered in more detail on pages 13 and 14 More information on ER probes their theory selection and use can be found on our web site at http www alspi com erintro htm C Technical Specifications Model MS2700E High Resolution ER RS 485 Modbus Transmitter Physical Data Instrument Weight Total Weight w Accessories Instrument Dimensions Operating Temperature Storage Temperature Environmental Rating Enclosure Material Mounting Specifications Performance Data Measurement Type Range Resolution Cycle Time Electrical Data Power Requirements Maximum Probe Cable Distance Output Specifications 3 70 Ib 1 68 Kg 5 76 lb 2 61 Kg 6 0 H x 4 0 Dia 6 07H 15 25 15 25cm H x 10 16cm Dia 4 0 Dia U 10 16 1 1 Figure 1 Overall Dimensions 4 to 158 20 to 70 40 to 176 F 40 to 80 IP66 316 Stainless Steel Direct probe mount standard May be pole mounted using optional hardware 2 5 6 35cm Dia pole ER measurement using any standard ER probe type Wire Loop Tube Loop Cylindrical Flush Strip etc 0 100 of probe life 0 0015 of Probe Life 16 bit 75 Seconds 10 to 28 VDC 30 ft 9 1 m RS 485 Modbus RTU or ASCII Protocol Switch Selectable 2400 4800 9600 19 2K Selectable Baud 32 Maximum Units Addresses 1 to 32 Hazardous Location Certifications Intrinsic Safety USA Canada
19. ice to program this formula into the control DCS PLC system and have it calculate Corrosion Rate on a continual basis from the Metal Loss data The challenge in doing this is selecting an appropriate time interval Using an interval that is too short may give erratic results while selecting an interval that is too long may give results that are insensitive to system upsets The ideal time period depends on many factors and will vary from system to system It may take some trial and error to settle on the best time period for your installation In some cases it may be necessary to review the raw Metal Loss data and manually apply the Corrosion Rate formula to periods of interest For example look at the graph below and see how much the calculated Corrosion Rate can vary depending on the time period used 525 e ma lt 2 43 METAL LOSS mils d 42702005 5205 5102005 1 51602005 1182005 6132005 Date Figure 8 Corrosion Rates calculated from Metal Loss data While each of the results is valid for the selected time period the one of most interest is the value of 11 81 mpy which represents some type of system upset When the Corrosion Rate is calculated automatically on a pre selected time period there is no guarantee that the selected time period will always coincide with system upsets such as this That is why manual review and interpretation of Metal Loss data is also helpf
20. ils 10096 Metal Loss The Probe Life can be found in Table 1 and is also listed on the Metal Samples probe tag as the Multiplier Part O Serial Alloy Check Initial Figure 6 Metal Samples Probe Tag Figure 7 illustrates the relationship between the digital output and Metal Loss In this example a probe with a 10 mil life is assumed However the X axis could be changed to represent any Probe Life w N N RS 485 Modbus Output 0 0 0 2 5 5 0 7 5 10 0 New Probe ied Metal Loss mils 004 Figure 7 Output Relationship As seen here the transmitter output begins at O for a new probe zero Metal Loss and increases as the probe element corrodes eventually reaching a maximum of 65535 when the probe sensing element has been completely consumed by corrosion in this case 10 mils of Metal Loss At this time the probe has reached its end of life and must be replaced 13 ii Calculating Corrosion Rate As explained previously ER probes and instruments report Metal Loss However the value that is of ultimate interest is Corrosion Rate The Corrosion Rate is essentially Metal Loss over time so the Corrosion Rate can be calculated using the following formula AMetalLoss mils x 365 ATime days Corrosion Rate mpy where AMetalLoss mils is the difference between two Metal Loss readings ATime days is the time difference between those two readings It is a common pract
21. itch 2 as illustrated in Table 3 Parameter Value Baud Rate 19200 Data Bits 8 Parity Even Stop Bits 1 Table 4 Default Communication Parameters ii Device Address Up to 32 MS2700E transmitters may be connected in a multi drop network daisy chained using a single cable run However each transmitter must be set to a unique device address to avoid conflicts This is done using Positions 3 through 7 of Switch 2 as illustrated in Table 3 CAUTION Be sure to observe the appropriate gas group rating listed on page 3 for stand alone or multi drop operation iii Communication Protocols The MS2700E transmitter offers user selectable RTU or ASCII communication protocols giving the unit a broader range of compatibility The communication protocol is set using Position 8 of Switch 2 as illustrated in Table 3 iv Termination Resistor To ensure proper operation the RS 485 network must be terminated properly with a termination resistor To facilitate this each MS2700E transmitter has a built in 1200 termination resistor that can be switched on or off using Position 10 of Switch 2 Once all units have been installed be sure to enable the termination resistor of the last unit in the network The termination resistors of all other transmitters should be turned off v Data Registers Table 5 lists the data registers of the MS2700E transmitter No Register Address 40001 40002 Device Address 40003
22. lement in closer proximity to the Exposed Element compared to other probe types providing more effective temperature compensation and thus reducing the effects of thermal noise Because they are designed to corrode ER probes are sacrificial in nature Each ER probe will have a finite life that is based on the element thickness ER probes are available in a number of geometries and thicknesses designed to suit a wide variety of applications Table 1 lists the common ER element options available from Metal Samples and the effective life of each 1 Tubular Loop Compatible Wire Loop Compatible Compatible Table 1 Standard ER Probe Elements The MS2700E transmitter measures an ER probe utilizing a high resolution 16 bit measurement This allows the unit to detect much smaller amounts of metal loss thus responding faster to corrosion events and upsets At 16 bit resolution the MS2700E transmitter can measure metal loss amounts as small as 0 001596 of the probe life Metal loss readings taken by the MS2700E transmitter are output as a digital RS 485 signal which can be fed into a plant control system or other recording devices The Metal Loss is represented by a 16 bit digital value between O and 65535 where 0 0 mils 0 Metal Loss 65535 Probe Life in mils or 100 Metal Loss The Probe Life or Span of the probe being used see table 1 above The Metal Loss data can be used to calculate the corrosion rate between any perio
23. n drawing 22
24. n matter that could cause damage or cause an electrical short Clean as necessary Ensure that the locking screw is in place and is secure Annually The MS2700E transmitter enclosure is made of corrosion resistant 316 stainless steel Annually However it should still be checked periodically for any signs of corrosion Check for any signs of moisture ingress within the enclosure Annually Contact Metal Samples for replacement parts or if instrument repair is necessary 15 D Troubleshooting If the MS2700E transmitter does not seem to perform as expected check the following items CAUTION Before performing any tests or maintenance on the MS2700E transmitter ensure that all hazardous area requirements are met 1 00 HO UT R 9 Ensure that the probe is operational and is not completely corroded This can be done in two ways a Test the probe with a portable ER meter if available b Test the probe with a portable resistance or continuity meter as follows i Connect one test lead to pin A of the probes 6 pin connector Measure continuity to each of the other pins There should be continuity low resistance to each pin NOTE Continuity on each pin does not ensure that the probe is good However if you find an open circuit on any pins then it is almost certain that the probe is bad and should be replaced Ensure that the Probe Selection Switches are set correctly for the probe being used Confirm the probe type
25. o the probe extension cable if the MS2700E transmitter is remote mounted 4 Loosen the Enclosure Lock Screw 5 Unthread and remove the transmitter cover 6 Change the Probe Selection Switches to the Wire Loop position see page 9 7 Reconnect power and allow the instrument to measure for several minutes to stabilize 8 After several minutes observe the transmitter output The output should closely match the value printed on the Meter Prover label If the transmitter output matches the Meter Prover value you may return the Probe Selection Switches to their previous setting and reconnect the MS2700E transmitter to the probe If the transmitter output shows a significant difference compared to the Meter Prover value further troubleshooting may be required Refer to page 16 for troubleshooting or contact the factory for further assistance Be sure to reinstall the enclosure cover and tighten the Lock Screw when putting the MS2700E transmitter back into service 12 d Interpreting Data i Metal Loss The MS2700E transmitter measures the Metal Loss of an ER probe and converts that value to a digital 16 bit RS 485 Modbus output This output is directly proportional to the cumulative Metal Loss of the ER probe at any given time The overall span of the output is proportional to the life of the probe in use so for DCS PLC programming the RS 485 Modbus output can be scaled as follows 0 2 0 mils 096 Metal Loss 65535 Probe Life in m
26. r will ensure that your instrument is routed to the correct department when it is received at the factory After receipt of an RMA number you may pack your instrument for return Be sure to pack your instrument in a sturdy box and to pad it sufficiently to avoid damage during transit Also be sure to complete the Instrument Repair Form on the next page and include a copy with your repair This will ensure that the repair department has sufficient information regarding the problems you are experiencing with your instrument as well as the billing contact and return shipping details for the repair Once you have obtained an RMA number completed the Instrument Repair Form and packed your instrument securely please ship it prepaid to the following address Metal Samples 152 Metal Samples Road Munford AL 36268 ATTN RMA NOTE Be sure to list your RMA number in the attention line shown as blanks in the example above 17 C Instrument Repair Form This form may be photocopied for use when returning an instrument to Metal Samples for repair Please fill in all known information and enclose a copy of the completed form with the instrument General Information Model Serial Number Number RMA Date of Number Purchase If known Contact Information for Repair Contact Name Company Phone E mail Number Address Return Shipping Information Recipient Name Company Return Address
27. ssing items should be reported to Metal Samples immediately In the event of shipping damage a claim should be opened with the responsible carrier B Installation CAUTION Using this product in any way other than that specified within this manual may impair the intrinsic safety protection Installation of the MS2700E transmitter involves the following steps 1 Physical Mounting 2 Electrical Connection 3 Setup and Programming 1 Physical Mounting and Probe Connection When selecting a location to mount the MS2700E transmitter it is important to consider the surrounding environment To ensure proper operation e Donot mount the transmitter in a location that exceeds its operating temperature e Avoid mounting the transmitter near sources of strong electrical noise e Ensure that there is sufficient clearance for installation and to open the transmitter cover afterwards a Direct Probe Mounting The MS2700E transmitter is designed for direct probe mounting which eliminates the need for additional hardware and transmitter to probe cabling This greatly simplifies installation reduces costs and minimizes electrical noise that can be coupled onto probe cabling from nearby electrical equipment Before mounting the MS2700E transmitter first ensure that the probe is installed properly and securely During installation it is important that you do not apply excessive force on the probe or seals as doing so could break the seal and res
28. tes the need for internal wiring by an operator thus reducing the risk of physical damage to the circuit board i uw Connector CN1 Power and Data Figure 3 RS 485 Connector To facilitate wiring a three foot 1 meter wiring harness is provided This wiring harness connects directly to the 6 pin connector and extends to a nearby junction box not included to make the necessary power and data wiring connections from the control DCS PLC system pa Wiring Harness N NE Junction Box il IN Ji Not Included N Pa Figure 4 MS2700E Transmitter Wiring Harness NOTE Do not connect cable shielding to the Transmitter The shield must remain floating at the Transmitter The maximum permissible length of the field wiring between the MS2700E transmitter and the control system is determined by the control system supply voltage the electrical resistance of the cable and the load of the control system input If the Transmitter is to be installed in a safe area refer to section c Safe Area Installation for details If the Transmitter is to be installed in a hazardous area refer to section d Hazardous Area Installation b Grounding The MS2700E transmitter enclosure is grounded internally through the wiring harness but an additional external grounding terminal is provided as well The enclosure should be grounded properly using the external grounding terminal to ensure safe operation c Safe Area Install
29. ul 14 e Commissioning Once the MS2700E transmitter has been installed tested and properly configured for the probe in use it can then be closed and put into service First perform one last visual inspection to ensure that all electrical connections are secure and that the enclosure o ring is in place and is in good condition Then thread the enclosure lid onto the base fully Once the lid has been threaded into place tighten the Lock Screw to prevent unauthorized tampering Figure 9 Enclosure Lock Screw CAUTION The Lock Screw on the instrument base must be tightened securely to prevent unauthorized personnel from opening the MS2700E transmitter and ensure that the intrinsic safety is not violated Only qualified personnel should be allowed to install operate and maintenance the MS2700E transmitter C Maintenance Once installed the MS2700E transmitter requires little maintenance However it is important to verify the following items periodically to ensure continued safe operation CAUTION Before performing any tests or maintenance on the MS2700E transmitter ensure that all hazardous area requirements are met Inspection Item Frequency Inspect the enclosure o ring for any signs of damage Replace as necessary Annually Inspect the probe connector o ring for any signs of damage Replace as necessary Annually Inspect the external electrical connections for signs of corrosion mechanical damage or Annually foreig
30. ult in system leakage 4 To mount the MS2700E transmitter 1 Align the keyways of the transmitter and probe connectors 2 Insert the transmitter connector plug fully into the probe connector receptacle 3 Secure the transmitter to the top of the probe by tightening the coupling nut NOTE Hand tight is sufficient Do not over tighten the coupling nut NOTE Never force the connectors to mate If there is resistance stop and check for bent pins on the probe and for foreign material in the female sockets of the transmitter connector Gently straighten any bent pins and clear any foreign material that may be found Align Key Insert Connector Tighten Coupling Nut b Remote Mounting Figure 2 Direct Mount Installation When it is not practical to direct probe mount the MS2700E transmitter the unit can be remote mounted instead In this case the instrument is mounted to a separate mounting pole using the optional Remote Mounting Hardware Kit The transmitter is then connected to the ER probe via the optional probe extension cable When possible the transmitter should be mounted within 10 3m of the probe to keep the probe cabling short and minimize signal degradation 2 Power and Data Connections a Making Connections The RS 485 connections are made via the external 6 pin circular connector CN1 as shown in Figure 3 This hermetically sealed connector prevents moisture ingress and elimina
31. y terminal RS 485 terminal and connector CN2 combined RS 485 channel at each line Ui 23 Connector 1 pins D amp E J9 on PCB li 538 mA Ui 3 7 Vac Pi 0 7W li 225 mA Ci 68uF Pi 0 206 W Li 0 32uF Probe connector 0 14 mH Connector 2 J1 PCB U 25V l 503 mA P 20 7W Special Conditions Probe dielectric rating lt 500V r m s Do not exceed Networked daisy chained arrangement not for use in Group IIC IIIC environment 3 The maximum external capacitance Co that can be connected between RS 485 terminals CN1 and probe terminals CN2 is 32uF The maximum external Inductance Lo that can be connected between RS 485 terminals CN1 and probe terminals CN2 is 0 14 mH Whenever an electrically driven sensor or measuring device is used in a potentially explosive environment the measuring system must be installed in such a way that electrical energy is either effectively isolated from the explosive environment via explosive proof containers cable conduits etc or the amount of electrical energy produced in the hazardous area must be limited to an intrinsically safe level Limiting electrical energy is the most practical method of protecting the MS2700E transmitter when it is installed in a hazardous area In the MS2700E transmitter electrical energy limits are maintained by the use of appropriate safety barriers installed in the power and dat
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