The Rosemount™ 1299 Diaphragm Seal System provides reliable and accurate pressure measurement by isolating pressure sensors from harsh process conditions. It features a robust design and is compatible with a wide range of Rosemount transmitters. The diaphragm seal ensures accurate pressure readings by preventing clogging, corrosion, and other environmental impacts. Ideal for use in industries such as oil & gas, chemical processing, and food & beverage.

The system is available in various materials and configurations to meet the needs of different applications. The Rosemount™ 1299 is known for its durability, easy installation, and long service life.

Not Recommended For:
• Low-pressure applications where the diaphragm may not provide sufficient sensitivity

Product Data Sheet: Rosemount 1299 Flanged and Threaded Diaphragm Seal Systems

Selection Notes

• Material Selection: Choose the diaphragm material (stainless steel, Hastelloy®, or others) based on the process fluid’s corrosiveness and temperature requirements.

• Seal Size: Verify the proper diaphragm seal size to match the pressure sensor and application. Larger seals may be needed for high-flow or highly viscous media.

• Process Compatibility: Ensure that the diaphragm seal is compatible with the fluid, temperature, and pressure conditions in your process.

• Mounting Style: Confirm whether you need a direct mount or remote mount configuration, depending on the installation location and space constraints.

Why Choose the Rosemount™ 1299 Diaphragm Seal System

• Protects Your Pressure Transmitter
The diaphragm seal prevents direct contact between the pressure sensor and aggressive or corrosive process fluids, significantly extending the life of the transmitter.

• Enhanced Accuracy
By isolating the transmitter from harsh environmental conditions, the Rosemount™ 1299 ensures accurate, reliable pressure readings even in challenging applications.

• Wide Material and Configuration Options
Available in various diaphragm materials (such as stainless steel and Hastelloy®) and multiple seal configurations, the 1299 system can be customized to fit different process requirements.

• Easy Installation
The Rosemount™ 1299 system is designed for quick and straightforward installation with minimal downtime. The diaphragm seals come pre-assembled with the Rosemount transmitter, making them ready for immediate use.

• Global Certification
The system meets various international standards, ensuring reliability and safety in hazardous environments like ATEX, IECEx, and CSA approvals.

FAQ

Q: What materials are available for the diaphragm seal?
A: The Rosemount™ 1299 diaphragm seal is available in materials like stainless steel, Hastelloy®, and others, depending on your application’s chemical and temperature requirements.

Q: How do I select the correct diaphragm seal size?
A: Seal size depends on the pressure sensor's specifications and the flow rate or viscosity of the process medium. Larger seals may be needed for high-flow processes.

Q: Can the Rosemount™ 1299 system be used in hazardous areas?
A: Yes, the Rosemount™ 1299 diaphragm seal system is certified for use in hazardous environments, including ATEX, IECEx, and CSA certifications.

Q: How does the diaphragm seal improve pressure measurement accuracy?
A: The diaphragm seal isolates the pressure sensor from the process fluid, preventing clogging or corrosion that could affect measurement accuracy.