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MS2900L - CorrTran MV

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 - sales@metexcorporation.com

Corrosion Monitoring,Instruments,Meters

MS2900L - CorrTran MV

LPR 4-20mA / HART® Transmitter

Metal Samples' CorrTran MV transmitter measures general corrosion, localized corrosion (pitting), and conductance, and transmits that information to operators via 4 to 20mA / HART® protocol in real time. The corrosion rate or pitting factor is configured as the primary variable using a standard 2-wire 4 to 20 mA output. The remaining outputs are configured as secondary and tertiary HART variables.

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, the 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.

Features

• On-line corrosion monitoring, multivariable
• 2-wire, 4 to 20 mA transmitter, HART interface
• General corrosion, localized corrosion (pitting), and conductance monitoring via HART
• Stern-Geary B value automatically updated for changes in the process

Technical Specifications

Model: MS2900L CorrTran MV LPR 4-20mA/HART Transmitter

Physical Data

Instrument Weight: 1.1 lb (500 g)
Instrument Dimensions: 3.78” x 3.15” x 6.30” (96mm x 80mm x 160mm)
Operating Temperature: -40° to 158°F (-40° to 70°C)
Enclosure Material: Aluminum
Degree of Protection: IP66, NEMA 4X
Electrical Entry: ¾ NPT

Electrical Data

Electrical Connection: 2-wire 4-20 mA with HART
Minimum terminal voltage: 11 V at 20 mA without alarm, or at 22.5 mA with alarm
Maximum terminal voltage: 30 V
Current Consumption: 4 to 22.5 mA
Maximum Load (at 24 V DC): 575 O with high alarm, or 650 O without high alarm

Measurement Data

Probe Type: 3-Electrode LPR
Measurement Type: General Corrosion1 Localized Corrosion 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
Maximum2: 1000 mpy
(25 mmpy)

1 Instantaneous corrosion
rate available as a primary variable. Average corrosion rate available via HART.
2 Range adjustable via
HARTor factory set.
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

Output Signal: 4-20 mA with HART protocol
Alarm Events: Alarm on over-range
Alarm Types: Digital and Analog (configurable)
Analog Alarm Options: Current high (22.5 mA) with auto-reset (default), current high with manual reset, or none
Output Damping: 0, 1, 2, 5, 10, 20, 50 s
Load: Minimum load for HART communication: 250 O

Certificates and Approvals

Ex Approval: LCIE 05 ATEX 6097X , for additional certificates contact Metal Samples
CSA Approval: cCSAus certified for USA and Canada; Certificate no. 1563164
IS: Cl. I, II, III; Div. 1, 2; Groups A-G
EX: Cl. I; Div. 1, 2; Groups A-D
NI: Cl. I, II, III; Div. 2; Groups A-G
Type of Protection: II 1G EEx ia IIC T4
Patents: U.S. patents: 7,239,156; 7,245,132; 7,265,559; 7,282,928

Conformity Information

Directive 94/9/EC (ATEX): EN 50014, EN 50020, EN 50284
Degree of Protection: EN 60529

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.

MS2900L - CorrTran MV
User Manual

METEX CORPORATION LIMITED

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