MS2100L - CorrTran AQUA

LPR 4-20mA / HART^® Transmitter

View data sheet (PDF)
User's Manual (PDF)
CorrTran Configuration Tool (download)

Metal Samples' CorrTran AQUA is a compact corrosion transmitter used in the water treatment industry that 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 AQUA 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 AQUA 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 AQUA 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.

Probe shown in photo not included with transmitter

Features

On-line corrosion monitoring, multivariable
Install in an existing coupon rack
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
Optional local LCD display

CorrTran Aqua with Display

CorrTran Aqua without Display

Technical Specifications

Model	MS2100L CorrTran AQUA - LPR 4-20mA / HART^® Transmitter

Physical Data
Instrument Weight:	1.1 lb (500 g)
Instrument Dimensions:	7.1” x 5.4” x 2.4” (180mm x 137mm x 61mm) without LCD display 7.1” x 5.4” x 3.4” (180mm x 137mm x 86mm) with LCD display
Operating Temperature:	-40° to 158°F (-40° to 70°C) without LCD display 14° to 122°F (-10° to 50°C) with LCD display
Enclosure Material:	ABS
Degree of Protection:	IP66, NEMA 4X

Electrical Data
Electrical Connection:	2-wire 4-20 mA with HART
Supply voltage:	11-30 VDC without LCD display 15-30 VDC with LCD display
Current Consumption:	4 to 22.5 mA
Maximum Load (at 24 V DC):	575 Ω with high alarm / 650 Ω without high alarm (without display) / 850 Ω without high alarm (with display)

Terminal Assignments
2-wire connection with HART (DC)

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)
Mesurement Range(s):	Default Range: 0 to 40 mpy (0 to 1 mmpy)	Low Range: 0.0 to 0.01 Medium Range: 0.01 to 0.1 High Range: 0.1 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 HART or factory set.
Factory Settings:	B value (Stern Geary value): 25.6 mV K value (corrosion constant): 11800 (2e- in reaction)
Measurement Cycle:	4 to 34 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
Load:	Minimum load for HART communication: 250 Ω

Certificates and Approvals
Patents:	U.S. patents: 7,239,156; 7,245,132; 7,265,559; 7,282,928

Conformity Information
Degree of Protection:	EN 60529