ABB 266DRH / 2600T Differential Pressure Transmitter with Remote Seal
Overview: Remote-Seal Precision for Severe Process Conditions
The ABB 266DRH is a differential pressure transmitter from ABB 2600T Series, purpose-built for measuring liquid, gas, or steam flow as well as level, pressure, and density in applications where the process media makes a direct-mount transmitter impractical. Characterized by its remote seal construction, the 266DRH inherits Taylor All-Welded remote seal manufacturing technology, giving it unmatched total performance and a wide selection of fill fluid, diaphragm material, capillary protection, and mounting connection options to match the most demanding process conditions.
As an authorized supplier of ABB process instrumentation, Seven Star LLC sources and supplies the 266DRH pressure transmitter to refineries, gas processing facilities, and petrochemical plants across Oman and the wider GCC. Because remote-seal transmitters are frequently specified for severe, high-temperature, or contamination-sensitive process media, Seven Star LLC helps engineering teams configure the correct seal, fill fluid, and connection combination for their application.
Measurement Principle
The 266DRH measures differential pressure by transmitting process pressure through a remote diaphragm seal and capillary system filled with a specified fill fluid, isolating the transmitter sensing module from direct contact with the process medium. This remote-seal approach is essential where the process fluid is corrosive, viscous, prone to crystallization, or simply too hot for a direct-mount sensor to survive reliably, since the capillary and seal assembly can be positioned at the process connection point while the electronics and sensing module remain in a more benign location.
The transmitter delivers a base accuracy from plus or minus 0.06%, with span limits ranging from 4 to 16,000 kPa (16 inH2O to 2,000 psi) depending on the specific sensor configuration ordered, and an overall pressure range spanning 0.2 to 2,330 psi across the 266DRH model family. Replacement plug-and-play electronics with auto-configuration capability reduce maintenance time, and an Easy Set-up menu allows configuration and zero trim in minutes without requiring an expensive handheld communicator.
Engineering Design of the 266DRH
The 266DRH supports multiple digital protocol options, HART, PROFIBUS PA, FOUNDATION Fieldbus, and WirelessHART, giving specifiers integration flexibility and transmitter upgrade capability across different plant communication architectures. The WirelessHART variant in particular eliminates complex wired infrastructure, shortening installation time and lowering overall implementation cost, with a battery life of approximately 10 years at 32-second update rates for a cost-effective, reliable process monitoring solution.
SIL2/SIL3 certification issued by TUV Nord according to IEC 61508 makes the 266DRH a suitable fit for safety-critical loops, and the transmitter stainless steel construction with All-Welded remote seal technology is engineered for long-term stability and proven reliability even under extreme ambient and process conditions. Options for capillary protection, diaphragm material, and mounting connection allow the transmitter to be tailored precisely to the process media and installation geometry required.
Key Features
The ABB 266DRH Differential Pressure Transmitter delivers precision measurement for the most demanding process applications. Key characteristics include:
- Remote diaphragm seal construction using Taylor All-Welded seal manufacturing technology.
- Base accuracy from plus or minus 0.06%; pressure range 0.2 to 2,330 psi across the model family.
- Multiple protocol support: HART, PROFIBUS PA, FOUNDATION Fieldbus, and WirelessHART.
- SIL2/SIL3 certified per IEC 61508 for safety-critical loop applications.
- Plug-and-play replacement electronics with auto-configuration for reduced maintenance time.
- WirelessHART battery life of approximately 10 years at 32-second update rates.
- Wide selection of fill fluid, diaphragm material, and mounting connection options.
Industrial Applications
The 266DRH is deployed across refinery process units, gas processing facilities, and petrochemical plants wherever differential pressure measurement of liquid, gas, or steam flow, level, or density is required on process media too hot, corrosive, or contaminating for a direct-mount transmitter. Its SIL2/SIL3 certification also makes it a preferred choice for safety instrumented systems monitoring critical process variables.
Seven Star LLC supports refinery instrumentation teams, gas processing operators, and petrochemical maintenance departments across Oman, Muscat, Sohar, and the broader GCC region with sourcing of ABB 2600T Series pressure transmitters, helping projects achieve reliable differential pressure measurement on their most severe process applications.
Technical Specifications
The table below summarizes the core specifications of the ABB 266DRH Differential Pressure Transmitter as supplied by Seven Star LLC.
| Parameter | Specification |
|---|---|
| Model | ABB 266DRH (2600T Series) |
| Type | Differential pressure transmitter with remote diaphragm seal |
| Pressure Range | 0.2 to 2,330 psi |
| Base Accuracy | From plus or minus 0.06% |
| Span Limits | 4 to 16,000 kPa (16 inH2O to 2,000 psi) |
| Communication Protocols | HART, PROFIBUS PA, FOUNDATION Fieldbus, WirelessHART |
| Safety Certification | SIL2/SIL3 per IEC 61508 (TUV Nord) |
| Material | Stainless steel |
| Battery Life (WirelessHART) | Approx. 10 years at 32 sec. update rate |
Why Choose Seven Star LLC for Remote-Seal Transmitter Configuration
A remote-seal transmitter’s real specification challenge isn’t the transmitter itself but the seal, fill fluid, capillary length, and diaphragm material combination matched to the actual process media – the wrong fill fluid for a high-temperature steam application, or an incompatible diaphragm material for a corrosive process fluid, undermines the entire point of specifying a remote seal in the first place. Seven Star LLC’s engineers walk customers through this configuration before the 266DRH is ordered, confirming process temperature, media compatibility, and communication protocol (HART, PROFIBUS PA, FOUNDATION Fieldbus, or WirelessHART) against the actual installation. We also help refinery and petrochemical engineering teams across Oman plan SIL2/SIL3 documentation for safety-critical loops, and coordinate delivery around planned turnarounds across Muscat, Sohar, and the broader GCC.
Request a Quote for ABB 266DRH / 2600T Differential Pressure Transmitter with Remote Seal
Seven Star LLC supplies the ABB 266DRH differential pressure transmitter with full manufacturer documentation and regional technical support. Contact our instrumentation division for a formal B2B quotation, to configure the correct seal, fill fluid, and protocol for your application, or to obtain the complete technical datasheet. Seven Star LLC ensures every unit shipped across Oman and the GCC is genuine ABB hardware, correctly specified, and backed by local support.
Related Products
ABB is one of the world’s leading technology companies in electrification and automation, recognized for its commitment to innovation, reliability, and energy efficiency. With a history spanning more than a century, ABB delivers high-performance products and systems that help industries operate more intelligently and sustainably.
The company’s expertise covers a wide range of fields including power distribution, process automation, robotics, motion control, and digital solutions for smart manufacturing. ABB’s products are designed to enhance productivity, safety, and operational efficiency while reducing energy consumption and environmental impact.
Seven Star LLC supplies a complete selection of genuine ABB products, including industrial drives, PLCs, contactors, sensors, relays, and automation components, serving clients across oil & gas, energy, marine, and manufacturing sectors.
By combining ABB’s advanced engineering with Seven Star LLC’s trusted sourcing and support, customers gain access to reliable, future-ready industrial solutions built to meet the most demanding standards of modern industries.
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