Remote Non-Intrusive Corrosion Monitoring

Smarter Remote Non-Intrusive Corrosion Monitoring with Installed Ultrasonic Sensors

Measure It. Manage It.

Take advantage of a remarkably cost-effective, modular and robust solution for remote, non-intrusive monitoring of ID corrosion and erosion using the latest solid-state electronics, wireless or wired technologies, cloud based software and innovative ultrasonic transducer designs.

It is surprisingly inexpensive to get started today!

  • Calculating corrosion rates
  • Monitoring known “low spots”
  • Using a non-invasive solution in lieu of or in conjunction w/ invasive methods (coupons, ER probes, etc.)
  • Reducing recurring costs
  • Continuously accessing more & better data on asset condition

SNI is pleased to announce that our smartPIMS® product line is now CE Certified including Hazardous-area location certs for both ATEX Ex II 3 G and IECEx. See attached copies of the certs. This includes the Cellular, Modbus and Modbus DL installed sensor systems.


Introducing microPIMS!

A Whole New Approach to Wireless Corrosion/Erosion Monitoring!

A Whole New Approach to Wireless Corrosion/Erosion Monitoring!

microPIMS® is a fully wireless, non-intrusive, ultrasonic corrosion/erosion monitoring system. Powered by battery, it operates using long range (900 MHz) wireless connectivity. Each microPIMS sensor is programmed to take readings at any user-defined time interval and send data to webPIMS®, a cloud-based back-end web portal for analysis, trending and more. *North America-Only Offering at this time.

Use microPIMS® for:
  • Applications where frequent data is required to resolve corrosion/erosion rate issues
  • When short- or long-term corrosion rate data is needed for crude-slate changes or to map operational excursions
  • When quick and easy installations are required
  • Easy repositioning—no welding required
  • Areas not conducive to manual data collection
  • Covering many discrete points with simple attachment

Interested in Working with Sensor Networks?


smartPIMS components, software and systems are highly configurable, from just a few sensors to thousands of TMLs per network—and available for purchase, rent or as a service. Leveraging the low-cost and ubiquitous aspects of the Internet and wireless networks—including cellular—systems can be more easily and cost-effectively installed and maintained at most industrial facilities.

Installed sensors are ideally suited for remotely monitoring areas of active metal loss due to corrosion/erosion.

Wired Solutions

  • Hard wired – (for areas w/out cellular or wireless infrastructure)
  • No battery on board
  • Collected data manually via tablet
  • ‘Daisy-chain’ up to 32 DSIs on 1000’ RS-485 cable
  • 16 single element or 8 dual element per DSI
  • Temporary OR permanently affixed sensors

Wireless Solutions

  • Ideal for testing a few to a moderate number of points
  • Simple to install
  • Little to no IT support needed
  • Taking readings almost instantly upon setup at defined intervals (1 per day/week/month/etc.)
  • Cloud-based back end for trending & w/ excel data exporting
  • Low cost, highly configurable
  • Battery life: 5-7 years

Continuous Access to More and Better Data

AWS-hosted cloud-based data management system for ultrasonic thickness measurements from installed UT sensors.

  • View, report, analyze
  • Remote collaboration
  • Data can be hosted by Sensor Networks or by user
  • Corrosion rates
  • Set alarms for assets
  • GPS sensor locations
  • A-scan viewing

Why Ultrasound?

  • Safe. Non-invasive to the asset’s pressure boundary.
  • Absolute in its ability to directly measure remaining wall thickness. (Not a proxy for wall loss).
  • Extremely accurate to 0.001” (0.025 mm), with ability to measure down to 0.040” (1 mm) in carbon steel, especially for fixed-location probes.
  • Rugged, reliable and portable. Low recurring maintenance costs.
  • Versatile and cost-effective.

Typical Applications

Power Gen
  • Flow Accelerated Corrosion (FAC)
  • Microbiological corrosion
  • High pressure steam lines
  • High point vent
  • Baseline of new assets


  • Replacement of invasive technologies – ER probes/coupons
  • Process control for chemical inhibitor optimization
  • High Temp Naphthenic acid monitoring


  • Post repair or replacement baseline of new infrastructure
  • Monitoring of known/existing localized corrosion events
  • Used in lieu of pigging/ILI for river/road crossings or 49 CRF 192 & 195


  • Wellhead monitoring for initial start-up & injection/storage
  • High pressure pumping instrumentation health monitoring
  • Sand erosion/wash-out for offshore platforms & FPSOs
Other Applications
  • Flow-Accelerated Corrosion (FAC)
  • Microbiologically-Induced Corrosion (MIC)
  • High-pressure steam lines
  • High point vent
  • Baseline of new assets

Use Cases

Hard-wired system for offshore platforms

Wireless, real-time for refinery, chemical and power plants

Wireless, real-time for buried pipe

Manual system for refinery, chemical and power plants