Mobiltex CorTalk - Model RMU3 -Cathodic Protection Remote Monitoring Device

The field hardware consists of two primary components: a measurement terminal block (4-channel [compatible with MUX3 to expand to 16 channels] and 44-channel [RMU3-XL] options available) that is mounted inside the rectifier or a NEMA4 enclosure, and the antenna transceiver that is typically externally mounted. The RMU3 operates from a low voltage source such as a Class 2 transformer and has an internal battery backup system for short-term operation during power outages. Engineered for the lowest power consumption possible, the RMU3 is also suitable for TEG and solar applications. The RMU3 has integral high-energy surge suppression and provides unprecedented lightning immunity because there are no connections to electrical ground.

The RMU3 monitors and transmits nine channels of information – four high accuracy, galvanically isolated, AC/DC capable analog inputs are typically used to monitor volts, amps and/or 4-20mA signals from external equipment. An integral non-contact AC Line presence sensor can be used to determine if AC line voltage is present. An integral magnetic sensor can be used as a rectifier door sensor or tamper detection alarm. The RMU3 measures temperature and internal battery voltage and a user accessible switch can be configured to record site visit information. The RMU3 is also available with an optional “Measurement Recorder” which will capture analog readings every 6 hours and can store approximately 8 years of readings depending on your configuration.

Measurement data is wirelessly transmitted to the CorView Cloud Platform. CorView provides remote interruption control of the RMU3 equipped rectifier, manages all field data communications, maintains three years of measurement data, sends alarm exception and system performance emails, and controls password protected remote customer access. CorView is a highly secure environment that can be accessed using any web-enabled device as well as native iOS and Android apps. Measurement data is presented in an intuitive tabular format or graphical mapping display that color-codes abnormal measurement or site conditions for quick user interpretation. CorView can also provide near real-time email notification of abnormal measurement and alarm conditions.

• Rectifier Arrays: Smart Expansions up to 44 Channels
• Rectifier: Monitoring with GPS sync`d Interruption
• 1000000 Readings Datalogger || Optional Feature
• Future-proofed CAT-M1 [LTE-M 4G/5G] Cellular Backhauls
• Future-proofed Satellite [Iridium & Globalstar] Backhaul
• Highest Lightning, Surge, Overvoltage Immunity || No Earth Ground Bond

• Fast, simple installation
• Designed for high accuracy and resilience
• Intelligently engineered with additional functionality and expandability
• CorView Compatible – Multi-tenant Advanced Cloud Platform with OpenAPI and SOC2 Compliance
• Multiple pre-defined configurations
• Intuitive controls and configurations
• Global communication capabilities
• Smart readings and transmissions
• Built to withstand the toughest conditions
• Intelligent, flexible installation options for power & interruption

• The compact, weather-proof RMU3 is designed for the measurement terminal to easily fit inside a rectifier cabinet or a NEMA4 enclosure with an external antenna that has been tested and proven in the most extreme applications – the system can typically be installed in under an hour.
• External analog channels are high impedance and galvanically isolated with multistage lightning protection. AC rejection filters are utilized for DC measurements to provide maximum accuracy. Several voltage ranges to accommodate a wide range of sensors (current shunts, reference cells, and direct voltage measurement)
• RMU3 platform has an AC Line Presence Sensor available to determine voltage is present, a magnetic sensor on enclosure doors that will alarm when unauthorized tampering occurs, an optional Measurement Recorder to capture analog readings, and a 4-20mA mode to receive signals from external equipment like the
• MOBILTEX TS1 temperature sensor
• . The MUX3 Channel Expansion Base Multiplexer allows for easy expansion with up to four RMU3-B bases to be connected to a single RMU3 antenna.  Expands channel capacity to a maximum of 16 channels.
•  Engineered for the future on AWS to deliver the maximum security, scalability, open-compatibility and performance that will soon become system requirements for operators + eliminating issues when running “closed” legacy systems that restrict customers from accessible APIs
• The RMU3 can be utilized at test points and bond monitoring applications, in addition to the more conventional rectifier, TEG and solar applications. AC mitigation systems can also be monitored with an optional AC current transformer.
• The RMU3 comes standard with an external “TEST” button and dual colour LEDs for manual controls. It 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.
• Available with cellular or satellite communication capability, the RMU3 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.
• To minimize airtime costs, the RMU3 stores four sets of periodic readings and then transmits all of those readings via four available factory-configured satellite or cellular data transmission plans. Irrespective of data plans, the RMU3 takes measurements every 6 hours, the device will immediately initiate a transmission when an alarm condition is detected. Alarms can be suppressed during interruption.
• Lightning, surge and overvoltage protection — intelligently designed with no earth ground bond, there’s NEVER been a requirement to purchase additional surge protection or “hardening” with MOBILTEX RMUs + the broadest operating temperature range (-40° to +60°C [-40° to +140°F]).
• Wide range of options available designed to optimize performance and lower costs plus included integral battery backup system powers the device for approximately 16 hours (RMU3-G) or 10 hours (RMU3-S) during power outages.

RMU3 Base – Environmental

• Operating Temperature: -40° to +70° C (-40° to +158° F)
• Storage Temperature: -45° to +80° C (-49° to +176° F)
• Maximum Altitude: 5000 meters above sea level
• Humidity: 0 to 100% RH non-condensing

RMU3 Antenna – Environmental

• Operating Temperature: -40° to +70° C (-40° to +158° F)
• Storage Temperature: -45° to +80° C (-49° to +176° F)
• Maximum Altitude: 5000 meters above sea level
• Humidity: 0 to 100% RH non-condensing

RMU3 Antenna – Physical + Power

• Weight: 550 grams (1.2 lbs)
• Size: 53mm x 77mm x 134mm (2.1” x 3.0” x 5.3”)
• Power Source: 8.5 VDC nominal, supplied from RMU3-B