Bullhorn RM4210 and RM4250 Coupon Test Station Remote Monitors

Bullhorn RM4210 and RM4250 RMUs remotely monitor AC coupon test stations, like the Triton triple-coupon test station, to help optimize AC corrosion mitigation systems.

Why Choose Bullhorn RM4210 and RM4250 Remote Monitors?

We engineered Bullhorn RM4210 and RM4250 Remote Monitoring Units to provide continual AC corrosion threat tracking.


InputsSoftware Interface
Readings: AC current density, DC current density, AC pipe-to-soil, DC pipe-to-soil, PCR AC current drain or voltage, instant offInternal, field-replaceable primary and secondary batteries
3-7 year life when recording measurements hourly or daily with weekly transmissions
Additional solar or DC input voltage: 10-24 V DC
DC voltage range: ±100 VDimensions
AC voltage range: 0-100 VØ 6.06” x 3.96” H (8.22” H with test station adapter)
AC Current Range: 0-200 mAData Integrity
Input impedance: 10 MΩ

Channel-to-channel isolation: > 200 V
Data stored in nonvolatile (EEPROM) memory

Queued two-way communication (communication to the RMU is queued in Bullhorn Web and is sent the next time the unit wakes up to transmit)
Instant OfEnvironment
IR drop edge delay:
IR drop edge delay: 200 ms
Temperature: -30° C to +60° C
Bullhorn Tools Mobile via Bluetooth low energy
Safety and Compliance

RM4210 – IsatData Pro Satellite (Inmarsat)

RM4250 – LTE Cat-M Cellular (AT&T)
Certification mark: TUV

Tested Safety Standards:
CAN/CSA C22.2 No. 61010-1-2012
CAN/CSA C22.2 No. 61010-2-030:2012
Software Interface
Bullhorn Web

Bullhorn Tools for iOS and Android