Nothing compares to Rosemount 1199 diaphragm seal designs when it comes to reliability. Our engineers design diaphragm seals to endure the toughest applications to give you Reliability Over Time! Our diaphragm seal systems have three unique features:

• Robust Seal Design
• Optimized System Construction
• Unmatched Total System Performance

These features have been engineered to ensure the diaphragm seal system will deliver the ultimate reliability with unmatched performance.
 

Back-up Diaphragm Pattern:

Extends diaphragm life in process with solids

• Abrasives and solids can dent or ‘flatten' a diaphragm without back-up diaphragm pattern.
• Damaged diaphragms results in unstable performance.

Reduces oil volume to minimize temperature effects
 

Recessed Diaphragms:

Prevent pre-installation damage

• Recessed below gasket plane.
• Minimizes handling damage.

Reduce gasket induced zero-shift

• Recessed diaphragm prevents zero offset pressure on the diaphragm from off-centered gasket.

Optimized System Construction

All-Welded System design for vacuum applications

• Designed as system for reliability.
• Minimized volume for best performance.
• 100% helium leak-tested.
• Advanced fill fluid preparation and manufacturing techniques.
• Recommended from 6 psia to full vacuum.
• Full availability for seals, direct mount, capillaries, and fill fluids.
  

Designed for performance

• Diaphragm seals engineered exclusively for Rosemount transmitters.
• Optimized construction minimizes system fluid volume.

Manufactured for stability

• Proprietary fill fluid preparation eliminates contaminants
• Proprietary filling process ensures air-free system.