Rosemount 1199 Remote Transmission Flange Level Transmitter
The Rosemount 1199 remote diaphragm system offers the world's most extensive range of products and specifications to meet various measurement and application requirements. The Rosemount 1199 remote diaphragm can be assembled with Rosemount 3051S, 3051, 1151, and 2088 series differential pressure, gauge pressure, and absolute pressure transmitters, as well as level transmitters. The diaphragm seal system consists of a 3051 pressure transmitter, diaphragm seal, filling liquid, and either direct mount or capillary connection structures. During operation, the elastic diaphragm and filling liquid completely isolate the pressure-sensitive element of the transmitter from the process medium. Since the silicone oil does not flow, its heat transfer is slower, and the remote metal capillary serves to transfer and dissipate heat, also preventing the corrosive measured medium from directly contacting the measuring diaphragm.
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Pressure transmitter
Rosemount transmitter
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Detailed introduction
The Rosemount 1199 Diaphragm Seal System is designed to protect pressure transmitters from extreme process conditions—such as high temperatures, corrosive media, or sanitary environments—by isolating the sensing element with a remote seal and filled capillary system. It enables accurate and reliable pressure or level measurements in applications where direct transmitter mounting isn’t feasible. With a wide range of seal types, materials, and mounting options, the 1199 system is a versatile solution across industries like oil & gas, chemical, food & beverage, and pharmaceuticals.
| Parameter | Specification |
|---|---|
| Compatible Transmitters | Rosemount 3051, 2051, 1151, 2088, 3095 |
| Seal Types | Flanged, Threaded, Sanitary, Pancake, Wafer |
| Process Connection Sizes | ½ in. to 4 in. (varies by seal type) |
| Diaphragm Materials | 316L SST, Hastelloy C-276, Monel, Tantalum, Gold-plated, others |
| Fill Fluids | Silicone, Inert Fluids, Halocarbon, Neobee M-20, others |
| Max Process Temperature | Up to 410 °F (210 °C) depending on fill fluid and configuration |
| Max Working Pressure | Up to 6000 psi (413 bar) depending on seal and flange rating |
| Capillary Length | Standard up to 50 ft (15 m); custom lengths available |
| Mounting Options | Direct mount, Remote mount with capillary, Tuned-System™ |
| Certifications | SIL, ATEX, IECEx, CSA, FM, 3-A (for sanitary seals) |
Welding technology
Anti-welding corrosion design
Welding design to prevent cheap metals from entering the diaphragm.
Patented resistance seam welding method
Designed specifically for special metals
Key Features
Rosemount 1199 Diaphragm Seal System is packed with features that make it a go-to solution for challenging process environments. Here’s a breakdown of its standout capabilities:
Remote Measurement Capability: Transmits pressure readings from remote or hard-to-reach locations using filled capillaries or direct mount configurations.
Robust Diaphragm Seal Design: Protects transmitters from extreme temperatures, corrosive media, and high-pressure conditions.
Flexible Mounting Options: Available in flanged, threaded, or hygienic connections to suit a wide range of industrial applications.
Advanced Welding Techniques: Welded instrument connections reduce leak paths and improve long-term seal integrity.
Recessed Diaphragm: Minimizes installation damage and gasket misalignment, enhancing reliability.
Backup Diaphragm Pattern: Extends service life and reduces fill fluid volume for better performance.
Industry-Specific Seals: Tailored for sectors like oil & gas, chemical, food & beverage, and pharmaceuticals.
Safety Certified: Complies with rigorous safety standards, making it suitable for SIL-rated systems.
Frequently Asked Questions – Rosemount 1199 Diaphragm Seal System
1. What is the purpose of a diaphragm seal system?
It isolates the pressure transmitter from harsh process conditions—like extreme temperatures, corrosive fluids, or sanitary requirements—while still allowing accurate pressure or level measurement.
2. What types of process connections are available?
The 1199 system supports flanged, threaded, pancake, wafer, and sanitary connections to suit a wide range of applications.
3. How far can the transmitter be mounted from the process?
With remote capillaries, the transmitter can be located up to 50 feet (15 meters) away, depending on system configuration.
4. What fill fluids are available?
Options include silicone oil, inert fluids, halocarbon, and Neobee M-20, selected based on temperature, pressure, and chemical compatibility.
5. Can the 1199 system be used in hygienic or sanitary applications?
Yes. It offers 3-A certified sanitary seals for food, beverage, and pharmaceutical industries.
6. What is the maximum temperature and pressure rating?
Depending on the seal and fill fluid, it can handle up to 410 °F (210 °C) and 6000 psi (413 bar).
7. Is the system SIL certified?
Yes, it meets Safety Integrity Level (SIL) requirements for use in safety instrumented systems.
8. What’s the difference between a balanced and a Tuned-System™ assembly?
A Tuned-System™ is optimized for faster response and better performance by matching capillary lengths and fill fluid volumes.
9. How do I select the right diaphragm material?
Material selection depends on process media. Common options include 316L SST, Hastelloy C-276, Monel, Tantalum, and gold-plated diaphragms.
10. Where can I find installation and maintenance guidance?
You can refer to the or the for detailed documentation and support.
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