Bullhorn Model RM4016 Remote Monitor by American Innovations

Remotely Collects Cathodic Protection Measurements Via Satellite


The RM4016 remotely collects cathodic protection (CP) measurements used to demonstrate corrosion mitigation effectiveness. It monitors pipelines, well casings, tanks and other assets by reading rectifier AC and DC volts and amps, pipe-to-soil potential, shunts, test points, and critical bonds. The Orbcomm IsatData Pro satellite network is used for one-way, global, reliable, low-latency communications. The solar-paneled RM4016 reduces the costs and risks of connecting to 120 V/240 V AC “mains,” as well as providing a more reliable power source in areas where the main power source may be unreliable. Measurements are automatically uploaded to Bullhorn Web, a web-based asset manager that works with AI’s Pipeline Compliance System to form a full end-to-end regulatory compliance solution from measurement to reporting.

  • Rugged – The unit can survive the harshest of conditions, with built in surge protection and optional high energy surge arrester.
  • Reliable – Solar panel and battery provide reliable power in areas where the main power source may be unreliable or unavailable.
  • Integrated Compliance Solution – Complete end-to-end system to prove regulatory compliance, with filtered measurements easily imported into PCS where they can be made into compliance reports.

Feature Benefit
Analog channels measure both AC and DC potentials Single unit to measure rectifier volts and amps, pipe-to-soil potential, shunts, test points, and critical bonds
Digital channels provide discrete/close contact inputs and accumulator functionality The unit can also be used for intrusion detection, threshold detection and other state changes as well as pulse counting for metering
10 MΩ impedance Improved pipe-to-soil accuracy where just a few mA can be the difference between being in compliance and not
Pipeline Compliance System (PCS) integration Import RMU data directly or file transfer using BAT website
Global coverage via Orbcomm IsatData Pro satellite network Quickly communicate anywhere in the world without having to estimate coverage as required with cellular-based products
Sends alarms based on specific events (e.g. reading out of range, power loss, intrusion detection, etc.) Receive unlimited notifications via text message, voice, and email
Configurable via USB Save configuration settings and load to multiple units
Bullhorn Web system communicates unit status by email, text or Web notifications
  • Eliminate remote site visits with equipment status notifications
  • Get on-the-go access via smartphone
Internal backup battery Receive alarms when power fails
Optional High Energy Surge Arrester Increase product reliability with immunity to lightning and other surges


5 Analog Channels
DC voltage range: +/-150 V
AC voltage range: 150 V
Input impedance: 10MΩ
Accuracy of 1% of reading
Scan rate: once every 30 seconds
Channel-to-channel isolation: ≥ 250 V DC
2 Digital Channels
Functions: digital input, accumulator, accumulator reset, or contact closure (0 - 24 V DC)
Logic levels: minimum Logic 1 = 2 V; maximum Logic 0 = 1 V
Scan rate: 20 scans per second
Accumulator maximum cycle rate = 1 cycle/2 s; minimum state change period = 1 s
Minimum pulse width: 250 ms


Interruption Option
Maximum current: 500 mA DC
Output voltage: 10 – 14 V DC
Minimum switching cycle: 1 s
On/off cycle increments: 100 ms
Interruption modes: daily, interference, start/stop, continuous, and Instant Off
Interference mode: set up to 99 rectifiers or groups for influence studies
Relay types: NO or NC, solid state or mechanical


Instant Off
Analog channel 3: ± 10 V DC, sampled 60 times per second
IR drop edge delay: 0 to 60 seconds in increments of 1 ms
Configuration: GPS-synchronized measurement using configurable On, Off, and delay settings


Worldwide compatibility on 2G/3G/HSPA/4G GSM networks
Carrier independent. Automatically selects the best signal
Poll, reconfigure, and set alarm thresholds over-the-air


  Software Interface  
Bullhorn Web
Bullhorn Tools for PC


Power Supply
AC: 100 - 240 V AC with included AC/DC converter
DC: 10 - 14 V DC with interruption; 5-25 V DC without interruption
Backup: internal sealed rechargeable battery


Internal mount: polycarbonate enclosure (7.9” x 5.0” x 2.2”)
External mount: NEMA 4X compliant enclosure (4.0” x 7.3” x 12.4”)


Data Integrity
Data stored in non-volatile (EEPROM) memory.


Temperature: -30° C to +70° C
Humidity: 0 - 100% non-condensing


FCC part 15
NEMA 4X compliant enclosure
ESD: 8kV Air / 4 kV Contact