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Summary of Contents for Metal Samples CorrTran MV MS2801L
- Page 1 LPR RS-485 Transmitter (Model MS2801L) Operator’s Manual Metal Samples 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 ...
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Page 3: Table Of Contents
Table of Contents I. Introduction ............................ 1 A. General Description ......................... 1 B. Principles of Operation ...................... 1 C. Disclaimer .......................... 2 D. Device Identification ........................ 2 E. Technical Specifications ...................... 3 II. Installation and Operation ........................ 4 A. Receiving the MS2801L transmitter .................. 4 B. Installation.......................... 4 1. Physical Mounting and Probe Connection .............. 4 a. Direct‐Probe Mounting .................. 4 b. Remote Mounting .................... 5 C. Probe Specifications .................. 6 2. Power and Data Connections .................. 10 a. Making Connections .................. 10 b. Grounding ...................... 11 c. Safe Area Installation .................. 11 d. Hazardous Area Installation ................ 11 3. Setup and Operation .................... 13 a. RS‐485 Communication Settings .............. 14 i. Baud Rate and Default Communication Parameters ...... 14 ii. -
Page 5: Introduction
I. Introduction A. General Description The model MS2801L CorrTran MV transmitter is designed to measure general corrosion, localized corrosion and conductance in a wide range of industries. The instrument measures the corrosion rate and pitting factor, giving the output in mil/year or a 0‐1 pitting factor respectively. It also provides conductance measurement. The corrosion (corrosion rate) data from a Linear Polarization Resistance (LPR) probe can be transmitted to a plant control system or other recording device. The MS2801L CorrTran 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 3000 feet. Additionally, the MS2801L CorrTran transmitter offers user selectable RTU or ASCII communication protocols making it highly versatile. The MS2801L CorrTran transmitter is compatible with 3 electrode elements of Metal Samples LPR probes. The MS2801L CorrTran transmitter is available as direct‐mount or remote‐mount. The direct‐ mount version is mounted directly to the LPR probe. This option offers the simplest installation and minimizes noise problems. The remote‐mount option allows the MS2801L CorrTran transmitter to be mounted independently from (but in close proximity to) the LPR probe. It is then connected to the probe via a short probe cable. (See pages 5 and 6 for mounting diagrams and specifications.) ... -
Page 6: Disclaimer
C. Disclaimer Metal Samples has no power, nor does it undertake to police or enforce, compliance with the contents of this manual or observance of the safety precautions set forth herein. Metal Samples does not certify, test, or inspect the installations of MS2801L CorrTran MV for safety or other purposes. Metal Samples disclaims liability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, or reliance upon this manual. Metal Samples makes no guaranty ... -
Page 7: Technical Specifications
E. Technical Specifications CorrTran Model MS2801L LPR RS‐485 Modbus Transmitter Physical Data Instrument W eight: 3.70 lb. (1.68 Kg) Total 4.82”W Weight w/ Accessories: 5.76 lb. (2.61 Kg) (12.24cm) Instrument D imensions: 8.0"H x 4.82"W x 3.45”D 8.0”H (20.32cm x 12.24cm x 8.76cm) (20.32cm) Operating T emperature: ‐40° to 158°F (‐40° to 70°C) Storage T emperature: ‐40° to 176°F (‐40° to 80°C) ... -
Page 8: Installation And Operation
II. Installation and Operation A. Receiving the MS2801L CorrTran Transmitter Check the CorrTran Transmitter for any shipping damage when it is first received. When the unit is unpacked, verify that the following items are included: Transmitter Meter Prover User’s Manual Probe Cable (for remote‐mount only) Mounting Hardware (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 missing 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 Using this product in any way other than that specified within this manual may impair the CAUTION: intrinsic safety protection. Installation of the MS2801L CorrTran transmitter involves the following steps: ... -
Page 9: Remote Mounting
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 Tighten Insert Coupling Nut Connector 1 2 ... -
Page 10: Probe Specifications
C. Probe specifications CMP epoxy adjustable probe The CMP epoxy adjustable probe (Figure 1) consists of a glass epoxy probe with a ¾” NPT nylon compression fitting for insertion into the system. The studs for mounting the electrodes and the six-pin connector are held in place by the epoxy fill material. - Page 11 CMP fixed probe The CMP fixed probe (Figure 3) is a fixed-length probe. The probe assembly consists of a ¾” NPT pipe plug that is welded in place, an insertion rod with a three-electrode end cap, a hermetically sealed connector, and a six-pin connector welded in place.
- Page 12 CMP retractable probe The CMP retractable probe (Figure 5) is an adjustable-length probe. A specially designed packing gland is used with the probe for insertion into or retraction from a pressurized system without a process shutdown. The packing gland is designed to mount easily on a 1” piping system with a ball valve, but it can be modified for your specific mounting requirements.
- Page 13 CMP retrievable probe The CMP retrievable probe (Figure 7) is a fixed-length probe. It is designed to be used with HPTM and MHTM high-pressure access systems. The probe assembly consists of an insertion rod with a hermetically sealed three-electrode end cap, a hollow plug nut, and a standard six-pin connector, which are all welded in place. The hollow plug nut on the probe screws into the hollow plug of the access system.
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Page 14: Power And Data Connections
2. Power and Data Connections a. Making Connections The RS‐485 field wiring enters the transmitter through the 3/4" female NPT conduit port shown in Figure 4 below. When used in a hazardous area, the conduit or cable connections must be made in CAUTION: such a way that all hazardous area requirements are met. Probe Connector Stem or Probe Cable 3/4” FNPT Conduit Port for Field Wiring Entry Figure 4. RS‐485 Connector Electrical connections are made to the main PCB via the terminal blocks J2 and J9 as shown in Figure 6. NOTE: Do not connect cable shielding to the Transmitter. The shield must remain floating at the Transmitter. The RS‐485 protocol allows up to 32 transmitters to be daisy‐chained which simplifies installation and reduces costs. Figure 5 shows an example of a typical arrangement. Full wiring details are shown on pages 21 and 22. ... -
Page 15: Grounding
The maximum permissible length of the field wiring between the CorrTran 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 CorrTran 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 Installation The CorrTran transmitter is approved for use in hazardous areas, but can be used in non‐ hazardous areas as well. When used in non‐hazardous areas, equipment must be supplied with a pre‐approved power CAUTION: supply unit or approved equipment which meets the entity parameters shown below. d. Hazardous Area Installation This section provides general guidelines for hazardous area wiring. However, regardless of CAUTION: anything stated here, the CorrTran transmitter must be installed in full compliance with the control drawing located on page 20 and all of the local area requirements. ... - Page 16 Special Conditions 1. The MS2801L CorrTran MV RS‐485 LPR Transmitter shall only be powered from a supply with a maximum output voltage of 30V and which complies with one of the following: • Is a SELV or PELV system • A safety isolating transformer complying with the requirements of IEC 61558‐2‐6 or technically equivalent standard • Apparatus complying with the IEC60950 series, IEC61010‐1, or a technically equivalent standard • Fed directly from cells or batteries 2. All versions of the enclosure are manufactured from aluminium. In rare cases, ignition sources due to impact and friction sparks could occur. This shall be considered during installation, particularly if the equipment is installed in a zone 0 location. 3. The MS2801L CorrTran MV RS‐485 LPR Transmitter have non‐metallic parts incorporated in the enclosure of this equipment which may generate an ignition‐capable level of electrostatic charge, under certain extreme circumstances. Therefore, the equipment shall not be installed in a location where the external conditions are conducive to the build‐up of electrostatic charge on such surfaces. This is particularly important if the equipment is installed in a zone 0 location. In addition, the equipment shall only be cleaned with a damp cloth. 4. The MS2801L CorrTran MV RS‐485 LPR Transmitter is not capable of withstanding the 500V insulation test required by Clause 6.3.12 of IEC 60079‐11. This shall be taken into account when installing the equipment. 5. Only sensors that are classified as simple apparatus can be used with this equipment. For hazardous area installations, the maximum inductance and capacitance of the field wiring CAUTION: between the connected equipment and the transmitter cannot exceed the entity parameters. Non‐Metallic Hazardous area label on the instrument may pose a potential electrostatic hazard. CAUTION: ...
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Page 17: Setup And Operation
3. Setup and Operation Probe Cable Connector (CN2) Switch 2 ‐ RS‐485 Configuration Switches (See Table 3 below) Power and Data Connector (J1) ... -
Page 18: Rs-485 Communication Settings
a. RS‐485 Communication Settings The RS‐485 configuration switches are located on the top right corner of the main board as illustrated in Figure 6. 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 Device Address 3 4 5 6 7 Off (↓) Off (↓) Off (↓) Off (↓) Off (↓) 1 On (↑) Off (↓) Off (↓) Off (↓) Off (↓) -
Page 19: Baud Rate And Default Communication Parameters
i. Baud Rate and Default Communication Parameters The default communication parameters for the CorrTran transmitter are provided in Table 4 below. If necessary, the baud rate can be changed using Positions 1 and 2 of Switch 2, as illustrated in Table 3. Modbus Modbus Serial RTU ASCII ASCII Parameter Value Value Value Baud Rate 19200 19200 2400 Data Bits 8 7 8 Parity Even Even Even Stop Bits 1 1 1 Response Time Out 3000 mS 3000 mS 3000 mS Polling Interval 1 min 1 min ... -
Page 20: Setup Variables
b. Setup Variables (Read/ Write) Register Description Data Type No Address 1 40113 GC measurement Unit Unsigned Integer 2 40114 Measurement Mode Unsigned Integer 3 40115 Measurement Configuration Unsigned Integer 4 40116 Channel Number Unsigned Integer 5 40119 B Value Float single precision 6 40121 K value Float single precision 7 40123 A Value Float single precision Table 5. Setup Data Registers GC measurement unit. (Read / Write) Data Value 0 = mils per year (Default) 1 = mm per year ... -
Page 21: Output Data Registers
c. Output Data Registers (Read only) Register Description Data Type No Address 1 40201 Measurement Counter Unsigned Long 2 40203 Conductance Single Precision Float 3 40205 Calculated B Value Single Precision Float 4 40207 I Corr Single Precision Float 5 40209 General Corrosion Single Precision Float 6 40211 Local Corrosion Single Precision Float 7 40213 Average Local Corrosion Single Precision Float 8 40215 Solution Resistance Single Precision Float ... -
Page 22: Status Data Registers
d. Status Registers (Read only) Register Description No Address 1 40001 Device Status 2 40002 Device Address 3 40003 Baud Rate Table 7. Status Data Registers 40001‐Device Status 0 = Device in Error State 1 = Device in normal operation. 40002‐Device Address Shows active device address. 1‐32. iii. 40003‐ Baud Rate Displays the current Baud rate. 2400/4800/9600/19200 40004‐ Error Displays the current error information. 1 – High Localized corrosion detected ... - Page 23 Testing the CorrTran transmitter with the Meter Prover A Meter Prover is provided to allow routine checks of the CorrTran transmitter. It is not a calibration device and cannot be used to scale the corrosion process data. 1) Disconnect power. 2) Disconnect the CorrTran 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 to the probe extension cable if the CorrTran transmitter is remote‐ mounted.) 4) Loosen the Enclosure Lock Screw. 5) Unthread and remove the transmitter cover. 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. Using the MS2801L Config/Datalog Tool set corrTran parameter as follows. Device Mode = LPR Mode B Value = 25.6 mV Allow the MS2801L CorrTran MV to complete one whole sampling cycle. From the Config/Datalog tool collect the following data: A Elect Area K Probe Const Calculated B Value ...
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Page 24: Commissioning
Commissioning Once the CorrTran 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 10. Enclosure Lock Screw The Lock Screw on the instrument base must be tightened securely to prevent unauthorized CAUTION: personnel from opening the CorrTran transmitter, and ensure that the intrinsic safety is not violated. Only qualified personnel should be allowed to install, operate, and maintenance the ... -
Page 25: Maintenance
Maintenance 4. Once installed, the CorrTran transmitter requires little maintenance. However, it is important to verify the following items periodically to ensure continued safe operation. Before performing any tests or maintenance on the CorrTran transmitter, ensure CAUTION: 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 all electrical connections for signs of corrosion, mechanical damage, or foreign Annually matter that could cause improper operation or cause an electrical short. Clean as necessary. Ensure that the locking screw is in place and is secure. Annually Inspect the enclosure for any signs of corrosion or paint damage. Annually Check for any signs of moisture ingress within the enclosure. Annually Contact Metal Samples for replacement parts or if instrument repair is necessary. ... -
Page 26: Troubleshooting
5. Troubleshooting If the CorrTran transmitter does not seem to perform as expected, check the following items: Before performing any tests or maintenance on the CorrTran transmitter, ensure that all CAUTION: hazardous area requirements are met. If the CorrTran transmitter shows any signs of damage, remove it from service immediately CAUTION: and consult the factory. Bais Trouble shooting guide. SYMPTOM CAUSE / PROCEDURE SOLUTION Connect the correct voltage. No Response a. Check voltage. Connect correct polarity. Nominal voltage: 24 V DC. b. Check polarity. c. Ensure that all electrical cables and wiring are in good condition. d. Ensure that all electrical contacts are secure and free of corrosion. a. Check communication cable Replace the communication No communication to the between the instrument and ... - Page 27 REG. DATA DEVICE STATUS DESCRIPTION TROUBLE SHOOTING This is Information only. It is not an 1 High Localized The localized corrosion error. corrosion rate is above 0.3 detected B Value from The calculated B Value In some rare occasions the HAD 2 Harmonics out of based on the HAD is out of calculation might not give a plausible range the range. result. Switch to LPR only mode if (10mV<B<62.5mV) this status persists to stay on. Conductance out The measured solution Corrtran MV RS485 transmitter 4 of range conductance is lower than needs at least 4 uS of solution 4 uS. This equals a conductance or solution conductivity conductivity of of 1 uS/cm for full accuracy. This can approximately 1 uS/cm for also be an indication that there is finger electrodes. too much buildup on the surface of the electrodes, and they may need to be cleaned or they may not be ...
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Page 28: Service And Warranty Information
III. Service and Warranty Information A. Warranty Metal Samples warrants that any part of the model MS2801L CorrTran 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 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 ... -
Page 29: Instrument Repair Form
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 *If different than above. ... -
Page 30: Appendix A: Revision History
Appendix A: Revision History Revision Date Changes 07/11/2023 Initial Draft 01/21/2024 Data registers updated ... -
Page 31: Appendix B: Electrode Material
Appendix B: Electrode Material Electrode Material K‐Value UNS Number Model Number Aluminum 1100 10940.96 A91100 CME‐0N 2024 11400.51 A92024 CME‐0O 7075 A97075 CME‐1O Carbon Steel & Alloys 1010 11486.66 G10100 CME‐0S 1018 11597.63 G10180 CME‐0A 1020 11401.49 G10200 CME‐1T C4130 11283.76 G41300 CME‐1R A53 Grade B 11583.07 K03005 CME‐0B ASTM A105 ... -
Page 32: Appendix C: Probe Mounting Guide
Appendix C: Probe Mounting Guide Transmitter O‐ring Key # Probe Style* Process Connection Electrode Style Mounting Material A Fixed NPT, flange Direct Standard finger Viton B Fixed NPT, flange Remote Standard finger Viton C Adjustable NPT Direct Standard finger Viton D Adjustable NPT Remote Standard finger Viton E Retractable NPT Remote Standard finger Viton F ... -
Page 33: Appendix D: Hazardous Area Certification Details
Appendix D: Hazardous Area Certification Details... - Page 34 Appendix E: Control Drawing...
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