Remote Test Station Monitoring of Pipe-to-Soil Potential Engineered for Large-Scale Deployments

MOBILTEX introduces the CorTalk RMU1-LITE — a robust and purposefully-engineered device that enables pipeline operators to effectively automate the collection pipe-to-soil potential measurement data from Cathodic Protection (CP) test stations in extreme or difficult-to-access locations. It’s now possible to realize the operational, functional, and safety benefits of large-deployment remote CP data collection.

High volume deployments within operational budgets are now possible

The CorTalk RMU1-LITE offers user-selectable intervals, greatly enhancing the amount of pipe-to-soil data that is automatically collected as compared to manually obtained annual pipe-to-soil potential readings. Pipeline operators can take advantage of this capability to collect multiple measurements throughout the year, providing a richer data set to understand seasonal variations or short-term operating irregularities that can negatively impact CP system performance. This flexibility also provides a measure of future-proofing since the RMU1-LITE will be able to meet regulatory requirements for more frequent data collection that may come into force.

The RMU1-LITE also has a unique feature that adds to it’s autonomy and reliability, it can collect separate pipe-to-soil potential measurements from two connected reference cells. This allows technicians to use our CorView Cloud Platform to remotely compare the results and validate whether the reference cells are functioning properly. During an interruption event, the device can also capture an instant-off potential measurement, meeting the data requirements for annual level of protection surveys and further reinforcing the operational insights provided by more granular measurements.

Fast, simple installationThe compact, weather-proof RMU1-LITE is designed to fit entirely inside a standard CP test station and can be installed in about 20 minutes
Engineered for affordable, high-volume deploymentThe RMU1-LITE has been designed to provide essential, fit-for-purpose functionality, enabling pipeline operators to affordably achieve high volume deployment and generate operational data that provides new insights into system dynamics
Instant-off potential measurementsRMU1-LITE provides an instant-off potential measurement, generating additional data to meet regulatory requirements and better manage pipeline assets
Remote dual-reference cell validationRMU1-LITE offers the unique capability to obtain separate pipe-to-soil potential measurements from two connected reference cells. This allows technicians to compare the results and validate whether the reference cells are functioning properly
Global communication capabilitiesAvailable with cellular or satellite communication capability, the RMU1-LITE can transmit data from virtually any location. This helps improve the quality and frequency of data collection, while reducing the need for workers to undertake long, potentially dangerous trips, to remote sites
Built to withstand the toughest conditionsLightning, surge and overvoltage protection and broad operating temperature range (-40° to +60°C [-40° to +140°F])
Long-life batteryUser-replaceable standard AA battery provides up to 10 years of monitoring and data transmission and maximizes lightning isolation.


Operating Temperature-40° to +60° C (-40° to +140° F)
Storage Temperature-45° to +80° C (-49° to +176° F)
Maximum Altitude5000 meters above sea level
Humidity0 to 100% RH non-condensing
Physical + Power
Weight220 grams (0.5 lbs)
Size80mm x 80mm x 110mm (3.15”x3.15”x4.33”)
Battery LifeL91 Lithium AA batteries — Typically 10 years based on readings every 14 days and two exception transmissions per month.

Documents & Software

MOBILTEX CorTalk RMU1 ManualRMU1 Manual v1.20 [includes RMU1-LITE]PDF
CorTalk RMU1 Install Pack v1.0.0.24RMU1 Configuration Application, Firmware and Driver v1.20.0.0AZIP
RMU1 Config Apple iOS AppDownload from iTunesLink
RMU1 Config Android AppDownload from Play StoreLink
CorTalk Full Install Pack v1.0.0.25Download ZIP fileZIP
LTE Swap Apple iOS AppDownload from iTunesLink
LTE Swap Android AppDownload from Play StoreLink
CorView Apple iOS AppDownload from iTunesLink
CorView Android AppDownload from Play StoreLink

Frequently asked questions

What is the difference between an RMU1-I, RMU1-S and RMU1-G antenna?

The RMU1-I uses Iridium satellite for connectivity. The RMU1-S is the Globalstar satellite communications variant of the RMU1. The RMU1-G is the cellular version.

Which cellular network does the RMU1-G antenna utilize?

AT&T in the USA, Rogers in Canada. Cellular provider coverage maps can be used to ascertain if your sites have cellular coverage.

The RSSI (Receive Signal Strength Indicator) is different each time my RMU1-I reports in. Is this normal?

Yes, this is normal. The Iridium satellites the RMU1-I utilizes are in-motion orbiting around the earth. When the satellite is directly above the antenna, it will report a strong RSSI. If the satellite is low on the horizon when the RMU1 transmits, a lower RSSI is possible. The RSSI will change throughout the day as the satellite constellation moves through its orbit.

How can I tell if my RMU1 is transmitting a message to CorView?

Look for “Tx” and an antenna icon near the bottom left corner of the RMU1’s display. This indicates that the communications antenna is transmitting a message to CorView. There could be minor delays depending on network traffic and site coverage.


Cathodic Protection Monitoring Pipeline scene graphic illustrated in an isometric view
Cathodic Protection Monitoring Pipeline scene graphic illustrated in an isometric view


Call toll free: 1 844 689 3282 [NA]
1794 340515 [UK]

Our industry-leading Sales, Technical Support, and Service teams are ready to take you from product selection to initial set-up and continue to provide dedicated support throughout the product lifecycle.

Managing Seasonal Effects on Cathodic Protection Operation

RMU measurement data, soil classifiers and data analytics deliver a powerful tool for optimizing alarm thresholds to account for seasonal soil variations.