CorTalk RMU1-SUB

The industry’s toughest rmu takes safety to the next level - subgrade cathodic protection remote monitoring at test stations, coupons, & bonds


The RMU1-SUB collects and transmits CP performance data and GPS location as frequently as every few hours via satellite or cellular network. This provides technicians with a highly detailed, near-real-time view of the CP system and helps identify short lived events that may impact CP performance.

When combined with the MOBILTEX CorView web analytics platform, a network of RMU1-SUB devices provides corrosion engineers deep insights into the performance of the CP system, powerful reporting, and instantly identifies areas of concern.

The RMU1-SUB installation delivers a unique and intelligently designed solution for your most challenging urban and rural applications that improves safety, reduces expenditures, and optimizes integrity programs to become proactive, not reactive.


Operating Temperature -40° to +60° C (-40° to +140° F)
Storage Temperature -45° to +80° C (-49° to +176° F)
Maximum Altitude 5000 meters above sea level
Humidity 0 to 100% RH
Ingress Protection Rating IP68 1 metre, 7 days
Load Rating AASHTO M-306 : HS-20


Weight 225 grams (0.5 lbs)
Size 80mm x 80mm x 110mm (3.15”x3.15”x4.33”)
Battery Life L91 Lithium AA batteries — Typically 10 years based on readings every 7 days. Typically 5 years based on readings every 12 hours and 2 weeks of interruption per year
Datalogger Storage 1 million reading points (Factory Enabled Option)
Multiple pre-defined configurations Configurable as a CP coupon or critical bond remote monitor and can obtain pipe-to-soil potential measurements from two connected reference cells
Go beyond compliance and effectively mitigate against known urban AC and DC sources Multiple analog measurement channels provide accurate measurements for all required AC and DC parameters to meet regulatory requirements and better manage pipeline assets
Intuitive controls and configurations The RMU1-SUB can be easily programmed with our standard Programming Interface and a PC and our available Bluetooth Interface
Global communication capabilities Available with cellular or satellite communication capability, the RMU1-SUB can transmit data from virtually any location. 
Improve Safety, optimize CP performance Dramatically improve the quality and frequency of data collection in challenging locations — make permitting required to stop traffic in order to collect readings at thing of the past. Reduce costs, better protect assets, and completely eliminate risks to workers and the public.
Built to withstand the toughest conditions Engineered to withstand extreme temperatures, immersion in water for long periods including total freezing within ice, and is HS-20 load rated
Engineered for maximum CP robustness Industry-leading lightning, surge and overvoltage protection 
Long-life battery User-replaceable standard AA battery provides up to 10 years of monitoring and data transmission and maximizes lightning isolation
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