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User's Manual in PDF

MS2500L Loop-Powered LPR Transmitter

The MS2500L is a corrosion transmitter capable of measuring and transmitting data from all types of 3-electrode linear polarization resistance (LPR) corrosion probes.


Corrosion rate measurements are made using the linear polarization resistance technique. The instrument measures the current required to polarize the electrodes of a probe to a known potential. From the polarization potential and the measured current, polarization resistance can be calculated. Then, using Faraday’s law, instantaneous corrosion rate is calculated from polarization resistance.


Another feature of the MS2500L is its high-precision voltmeter. This is used to measure the open-circuit potential between electrodes.


Measurements are transmitted via 4-20mA current loop. Since current loop signals are not as sensitive to line loss as other types of data signals, the MS2500L may be located up to ten miles away from the data receiver under proper conditions.


The MS2500L is completely loop-powered, so installation is simple. A two-wire connection is all that is required for both instrument power and data transmission. Setup is also simple, using a set of switches to select the measurement function (corrosion rate or electrode potential).


Probe shown in photo not included with corrosion transmitter


The MS2500L is housed in a NEMA rated explosion-proof and weather-proof enclosure, and the probe cable is connected through a water-tight, explosion-proof cable gland. This makes the MS2500L suitable for use in almost any indoor or outdoor environment.

 

Technical Specifications

 

Model
MS2500L - Loop-Powered LPR Transmitter (Ordering # IN2500L)

 

Physical Data
Instrument Weight: 5.02 lb. (2.28 Kg)
Total Weight w/ Accessories: 7.08 lb. (3.21 Kg)
Instrument Dimensions: 5.81" H x 4.5" W x 4.81" D (14.76cm x 11.43cm x 12.22cm)
Case Specifications: Explosion Proof (FM, CSA, CENELEC, UL)
Class I, Groups B, C, D, Class II, Groups E, F, G, Class III,
CENELEC: Eexd IIC
NEMA 4, 7BCD, 9EFG
Mounting Specifications: 0.728" H x 1.756" W (1.85cm x 4.46cm) Bolt Pattern with 1/4-20 Tapped Mounting Holes, or may be mounted on a 1/2" to 2" (1.27cm to 5.08cm) pipe using supplied hardware
Operating Temperature: 32° to 158°F (0° to 70°C)
Storage Temperature: 32° to 158°F (0° to 70°C)

 

Performance Data
Measurement Type: 3-electrode LPR, Potential
Range: 3-electrode: 0-100 mpy  Potential: ± 1V
Cycle Time: 0.1 to 99.9 minutes

 

Electrical Data
Power Requirements: 11 to 35 VDC
Maximum Probe Cable Distance: 10 ft. (3.05 m)
Output Specifications: 4-20 mA Current Loop Output

 

Special Features
  • Switch selectable measurement type and cycle time
  • Loop powered

 

Accessory Items
10' Probe Cable (attached), Meter Prover, Mounting Hardware, Operation Manual

Contact Metal Samples Corrosion Monitoring Systems sales department for pricing and availability.

Main Office:
Phone: (256) 358-4202
Fax: (256) 358-4515
E-mail: msc@alspi.com

Houston Office:
Phone: (281) 471-2777
Fax: (281) 471-3405


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