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The Rosemount Thermal Optimizer allows for pressure measurement with increased process temperatures in low ambient climates.
The Rosemount Thermal Optimizer is an ideal solution for high temperature gauge pressure applications.

The Thermal Optimizer is not used to dissipate heat. It is used to conduct heat from the process to the fill fluid. This keeps the fill fluid at a temperature where it will be less viscous when installed in ambient temperatures below the normal operating ranges of the fill fluid (i.e. -50°C in northern Canada).
Rosemount™ Thermal Optimizer


Max. Operating Pressure
Up to 4,000psi (275 bar)
Process Temperature Range
Based on fill fluid - Maximum 698°F (370°C), Minimum -157°F (-105°C)
Communication Protocol
4-20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus, PROFIBUS® PA
Seal System Type
Direct Mount
Transmitter Connection
All Welded
Process Connection Flanged
Process Connection Threaded
1/2", 3/4", 1” Female or Male
Process Wetted Material
316L SST, Alloy C-276, Alloy 400, Tantalum, Gold-plated Alloy 400, Gold-plated 316L SST, see full specs for complete list of materials
Basic Diagnostics, Loop Integrity, Process Intelligence
SIL 2/3 certified to IEC 61508 by an independent 3rd party, NACE®, hazardous location, see full specs for complete list of certifications