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Rosemount 3051CD coplanar differential pressure transmitter paired with a 1199 remote diaphragm seal, assembled and filled at the Emerson factory. New, never installed.

What You’re Getting

This is a factory-sealed system — transmitter, capillary, and remote seal are filled with silicone oil and calibrated as one assembly at Emerson. That matters because field-assembled seal systems are prone to fill fluid contamination and air entrapment, both of which degrade measurement accuracy. The 1199 seal isolates the transmitter electronics from the process, making this setup suitable for high-temperature media (up to 315°C depending on fill fluid), corrosive services, or applications where impulse lines would clog. Common in refineries, chemical plants, and steam systems.

Key Specs

• Brand: Rosemount (Emerson)
• Model: 3051CD + 1199 remote seal
• Type: Differential pressure transmitter with diaphragm seal
• Output: 4-20mA HART
• Fill: Silicone oil, factory-filled and calibrated
• Condition: 100% new, factory-sealed Emerson assembly

Why Buy From Us

• Factory-sealed system: Emerson fills and calibrates the complete assembly. No field fill, no air bubbles, no guesswork.
• Lower total cost: Buying transmitter and seal separately costs more and adds installation risk. Pre-assembled means plug and play.
• Global delivery: Complete seal assemblies shipped worldwide via DHL/FedEx/UPS.
• Integrity checked: Fill fluid and calibration verified before shipping.