Test Station Remote Monitoring of Electrical Resistance (ER) Corrosion Probes

The CorTalk RMU1-ER collects and transmits a measurement of the corrosion rate near the pipe surface through the use of sacrificial electrical resistance (ER) probes as frequently as every few hours via satellite or cellular network. This provides technicians with highly detailed, near real-time measurement data that is useful in determining the underlying cause of corrosion and the ability to measure changes in corrosion conditions including the effectiveness of repairs, temperature cycles or sudden environmental changes.

The RMU1-ER is designed to be compatible with a wide range of ER probes. The RMU1-ER has the capability to measure ER probes constructed with tubular, wire, cylindrical, flush, spiral and strip geometries.

In addition to metal loss, the RMU1-ER can also measure the ER probe potential when a reference cell is connected. As the ER probe is typically electrically connected to the protected structure, the structure potential can be measured.

Combined with the CorView Cloud Platform, pipeline operators can implement and control a network of RMU1-ER devices to gain deep insight into the performance of the CP system, generate reports and instantly identify areas of concern.

Fast, simple installationThe compact, weather-proof RMU1-ER is designed to fit entirely inside a standard CP test station and can be installed in about 20 minutes
Established Electrical Resistance (ER) techniqueDirect measurement data through insulation near surface of pipe to identify key events causing corrosion vis metal loss, corrosion rate and trends
Multiple functionalityMeasure the ER probe potential when a reference cell is connected as the ER probe is typically electrically connected to the protected structure, the structure potential can be measured.
Intuitive controls and configurationsThe RMU1-ER can be easily programmed with our standard Programming Interface and a PC and can also be completed with a compatible iOS or Android-based mobile device and our available Bluetooth Interface
Global communication capabilitiesAvailable with cellular or satellite communication capability, the RMU1-ER 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
Weight225 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 7 days. Typically 5 years based on readings every 12 hours.

Documents & Software

MOBILTEX CorTalk RMU1-ER ManualRMU1-ER Manual v1.00PDF
CorTalk RMU1-ER Install Pack v1.0.0.19Download ZIP fileZIP
RMU1ER Config Apple iOS AppDownload from iTunesPDF
RMU1ER Config Android AppDownload from Play StorePDF



TitleImageDescriptionSKU (s)
RMU1ER MS Adapter Cable90 cm (36 in.) wiring harness with factory installed circular connector.  Allows use with Metal Samples and other similar ER probes.Mobiltex P/N A022001ER01
TitleImageDescriptionSKU (s)
RMU1PGM-BT Programming Interface KitCapable of Bluetooth communications with a phone/tablet. Can also be used with a PC through the USB connection.  Black USB cable.

Kit includes a carrying case and portable USB battery pack.

Mobiltex P/N A20A0332701
RMU1ADP RMU2/3 Programmer AdapterAllows an existing RMU2/3 Programming Interface to be used with RMU1 and RMU1ER devices.Mobiltex P/N A1506033001
RMU1/2/3-BT Programmer Kit


Universal programming kit for RMU1, RMU1ER, RMU2, and RMU3 devices.  Includes RMU1/2/3 base programmer (A1506033101), RMU1ADP (A1506033001), LiIon battery pack, soft case and USB stick with programming software.  Capable of Bluetooth communications with a phone/tablet. Can also be used with a PC through the USB connection.Mobiltex P/N A20A0333101


TitleImageDescriptionSKU (s)
RMU1ER Measurement ProverUsed to validate RMU1ER metal loss measurements. Simulates a 40mil ER wire probe with a fixed metal lossMobiltex P/N A040001ER01
Replacement Battery PackKit of 4 AA batteries for maintenance purposesMobiltex P/N  B02221RMU10
Test MagnetTest MagnetMobiltex P/N H00000MAG04
Modified RMU1 Replacement Lid For Direct Installation In 3” PipeOnly for RMU1ER-GMobiltex P/N H23390RMU02
Spacer Ring For 3” Test StationsSpacer Ring For 3” Test StationsMobiltex P/N H23510RMU01 (Black)

Mobiltex P/N H23530RMU01 (Orange)

Mobiltex P/N H23540RMU01 (Yellow)

Mobiltex P/N H23550RMU01 (Green)

Mobiltex P/N H23590RMU01 (White)

Mobiltex P/N H23560RMU01 (Blue)

Mobiltex P/N H235A0RMU01 (Red)

Test Station with 5 plated screws and top cover (Pro-Mark)Test Station with 5 plated screws and top cover (Pro-Mark)Mobiltex P/N A20A03RMU10 (Orange)

Mobiltex P/N A20A03RMU11 (Yellow)

Mobiltex P/N A20A03RMU12 (Green)

Mobiltex P/N A20A03RMU13 (White)

Mobiltex P/N A20A03RMU17 (Blue)

Mobiltex P/N A20A03RMU16 (Red)

Lockable bracket for Pro-Mark test station. (Padlock & test station not included)Only for RMU1ER-GMobiltex P/N A20B03RMU10
Lockable NEMA4X Enclosure6.75”W x 7.5”H x 5.5”D (171mm x 190mm x 140mm)

Comes with RMU1 bracket.

Mobiltex P/N A03700RMU10
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.


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