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MS2801L - CorrTran MV
LPR RS-485 Modbus Transmitter |
View data sheet (PDF)
User's Manual (PDF)
Instrinsic Safety Certifications
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Metal Samples’ MS2801L CorrTran MV transmitter
measures general corrosion, localized corrosion (pitting), and conductance, and transmits that information to
operators via RS-485 Modbus protocol in real time.
The CorrTran MV utilizes state-of-the-art algorithms and data analysis techniques to accurately measure general corrosion rate and pitting. Harmonic distortion analysis (HDA) is applied to improve the performance of the
industry-accepted linear polarization resistance (LPR) technique used to measure corrosion rate.
To further enhance the performance, an application specific
Stern-Geary variable (B value) is calculated and updated every measuring cycle. There is no need to
manually update the B value because of process changes. During the measurement cycle, CorrTran MV also performs an automated electrochemical noise (ECN)
measurement, which in combination with the corrosion rate data can provide a measurement of localized corrosion (pitting).
The CorrTran MV works with Metal Samples three-electrode CorrTran style probes and electrodes. Probes are available in a variety of mounting types and materials
to suit almost any type of installation. |
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| Features |
- On-line corrosion monitoring, multivariable
- RS‐485 Modbus
- General corrosion, localized corrosion (pitting), and conductance monitoring
- Stern-Geary B value automatically updated for changes in the process
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Technical Specifications
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| Model |
MS2801L CorrTran MV - LPR RS-485 Modbus Transmitter |
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| Physical Data |
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| Instrument Weight: |
3.70 lb (1.67 kg)* |
| Instrument Dimensions: |
8.00” x 4.82” x 3.45” (20.32cm x 12.24cm x 8.76cm) |
| Operating Temperature: |
-40° to 158°F (-40° to 70°C) |
| Enclosure Material: |
Cast Aluminum (Copper‐Free) / Stainless Steel 316 |
| Degree of Protection: |
IP66, NEMA 4X |
| Electrical Entry: |
3/4 NPT (Other entries available on special request) |
| * Aluminum |
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| Electrical Data |
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| Electrical Connection: |
Power and RS‐485 Serial communication |
| Minimum terminal voltage: |
11 V |
| Maximum terminal voltage: |
30 V |
| Current Consumption: |
~30mA |
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| Terminal Assignments |
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| Measurement Data |
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| Probe Type: |
3-Electrode LPR |
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| Measurement Type: |
General Corrosion |
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Localized Corrosion |
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Conductance |
| Measurement Unit: |
mpy (mils per year) or
mmpy (mm per year) |
Unitless |
microSiemens (µS) |
| Measurement Range(s): |
Default Range:
0 to 40 mpy
(0 to 1 mmpy) |
Default Range:
0.0 to 1.0
Low Range:
0.0 to 0.3
High Range: 0.3 to 1.0 |
5 to 333,333 |
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Maximum: 1000 mpy
(25 mmpy) |
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| Maximum Measured Error: |
Excitation voltage < 0.05% of full span
Corrosion current measurement <0.2% of full span |
| Factory Settings: |
B value (Stern Geary value): 25.6 mV
K value (corrosion constant): 11800 (2e- in reaction) |
| Measurement Cycle: |
4 to 21 minutes (depends on configuration) |
| Output Data |
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| Output Signal: |
RS‐485 Modbus RTU and ASCII protocol |
| Baud Rate: |
2400/4800/9600/19.2K selectable |
| Address: |
32 Maximum Units (addresses 1 to 32) |
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| Enclosure Specifications |
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| Explosion Proof: |
FM, CSA, CENELEC, UL |
| Protection: |
IP66, NEMA 4X, 7BCD, 9EFG |
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| Hazardous Location Certifications |
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| Type of Protection: |
II 2(1) G
Ex db[ia Ga] IIC T5….T4 Gb
‐40⁰ C ≤ Ta ≤ + 80⁰ C
Ex db[ia Ga] IIC T6 Gb
‐40⁰ C ≤ Ta ≤ + 70⁰ C |
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| Conformity Information |
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| Directive 2014/34/EU (ATEX): |
EN 60079-0 , EN60079-1 , EN 60079-11 |
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EC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information contact Metal Samples.
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MS2801L CorrTran MV Ordering Information
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