Jerguson® JMT™: FieldComm Registered HART 7 Transmitter
Updated: Aug 19
We are thrilled to announce that our Jerguson Magnetostrictive Transmitter has achieved registration with the FieldComm Group and now proudly features HART 7 capability. All JMT shipments moving forward will automatically include this functionality.
What FieldComm Group Registration Actually Verifies
FieldComm Group is the independent standards organization responsible for HART, FOUNDATION Fieldbus, and related industrial communication protocols. Registration with FieldComm Group isn't a marketing claim - it's third-party verification that a device meets the actual technical specification for the protocol it claims to support, rather than simply advertising HART compatibility without formal certification behind it.
Why HART 7 Is a Meaningful Step Up

HART 7 represents a more advanced version of the HART communication standard compared to Generic HART, with real practical differences:
Device Integration: Better device management and standardization across manufacturers, meaning a HART 7 registered JMT integrates more predictably into control systems and asset management software that also follow the current standard.
Superior Diagnostics: Access to advanced diagnostics for better predictive maintenance and troubleshooting - rather than just receiving a level reading, HART 7 supports richer data exchange that can flag developing issues before they become failures.
Future-Ready Compatibility: Ensures the transmitter is equipped with current technology, prepared for future enhancements as the broader HART ecosystem continues to develop.
Getting the EDD/FDI Files
Users can download the EDD (Electronic Device Description) / FDI (Field Device Integration) files from the FieldComm Group's website or at jerguson.com. These files are what allow control system software to properly recognize and communicate with the JMT using its full HART 7 feature set - without them, a control system may only see basic functionality rather than the transmitter's complete diagnostic and configuration capabilities.
Upgrade Program for Existing Generic HART Units
If you are currently using a Jerguson Magnetostrictive Transmitter with Generic HART, an upgrade program is available to transition to HART 7. The upgrade process is straightforward: simply replace the existing electronics module with the new HART 7 compatible module - no need to replace the entire transmitter or disturb the mechanical installation itself.
This matters for facilities that specified JMT transmitters before HART 7 registration was achieved: rather than facing a full replacement to gain the new capability, the upgrade path is a targeted module swap.
Why This Matters for Control System Integration
Facilities standardizing on HART 7 across their instrumentation benefit from consistent diagnostic capability and device management across different manufacturers' equipment. A JMT that's formally registered, rather than simply claiming compatibility, gives engineers confidence that it will genuinely integrate as expected with HART 7-compliant control systems and asset management platforms.
Applications
FieldComm registered HART 7 JMT transmitters are valuable for:
Any Facility Standardizing on HART 7: Requiring formally verified device compatibility
Predictive Maintenance Programs: Where advanced diagnostics support catching issues before failure
Existing JMT Installations on Generic HART: Where the module-swap upgrade path avoids full transmitter replacement
Learn More
For more information on JMT HART 7 registration, the EDD/FDI download, or the upgrade program for existing units, visit jerguson.com or contact our Jerguson team.
Email: sales@clark-reliance.com Phone: +1 (440) 572-1500
Related Products & Resources:
Magnetic Level Indication Product Line: https://www.clarkreliance.com/magnetic-level-indication
Don't Sacrifice Reliability When It Comes to Your Level Transmitter: https://www.clarkreliance.com/post/don-t-sacrifice-reliability-when-it-comes-to-your-level-transmitter
Jerguson® Magnicator® + JMT™: Schedule 160 HART Transmitter: https://www.clarkreliance.com/post/magnicator-with-jmt-series-magnetostrictive-transmitter-sold-to-an-engineering-firm-in-bras%C3%ADlia



