Brand: ABB

ABB 266DRH / 2600T Differential Pressure Transmitter with Remote Seal

Name: ABB 266DRH Pressure Transmitter – Datasheet & Price Quote
Brand: ABB

Description

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 a trusted 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 datasheet 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 supplies this item on request with the manufacturer documentation, and availability and lead time are confirmed at quotation.

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About brand

ABB is the Swiss-Swedish engineering group for electrification and automation: low voltage drives, motors, circuit breakers and motor control, process instruments and analysers, control systems and robots. It was formed on 5 January 1988 by the merger of two older companies. ASEA was founded in Västerås, Sweden, in 1883 by Ludvig Fredholm to make electric lighting and generators. BBC Brown Boveri was founded in Baden near Zurich in 1891 by Charles E. L. Brown and Walter Boveri. ABB Ltd is incorporated in Switzerland, headquartered in Zurich and listed on the SIX Swiss Exchange and Nasdaq Stockholm.

ABB company profile

Formed	5 January 1988, by the merger of ASEA (Sweden) and BBC Brown Boveri (Switzerland), each holding 50%
ASEA	Founded 1883 in Västerås, Sweden, by Ludvig Fredholm; first products electric lighting and generators
Brown, Boveri & Cie	Founded 1891 in Baden, Switzerland, by Charles E. L. Brown and Walter Boveri
Headquarters	Zurich, Switzerland; ABB Ltd became the group holding company in 1999
Ownership	Public company listed on SIX Swiss Exchange and Nasdaq Stockholm
Brands in the group	Baldor (US motors, acquired 2011), B&R (machine automation, acquired 2017), K-TEK level instruments, Endura and Navigator analysers, SACE breakers
Product families	Low and medium voltage drives (ACS series), motors, SACE Tmax and Emax breakers, contactors and soft starters, flow, pressure, temperature and level instruments, liquid and gas analysers, Contrac actuators, AC500 PLCs, Ability System 800xA and S800 I/O, protection relays, robots

Milestones

1883: ASEA is founded in Västerås, Sweden.
1891: Brown, Boveri & Cie is founded in Baden, Switzerland.
1987–1988: The merger is announced on 10 August 1987; ABB Asea Brown Boveri starts operating on 5 January 1988.
1999: ABB Ltd, incorporated in Switzerland, becomes the single holding company of the group.
2011 and 2017: Baldor Electric and B&R join ABB.
2020: ABB sells its power grids business to Hitachi, focusing on electrification, motion, process and machine automation.

Choosing an ABB drive

ABB's ACS drive codes are easy to read once you know the pattern. In ACS580-01-046A-4, "ACS580" is the drive family, "01" means a wall-mounted single drive, "046A" is the rated output current (about 46 A) and "-4" means a 380–480 V supply. The family is chosen by application: ACS355 for compact machinery, ACS310 for simple pumps and fans, ACS580 as the general-purpose drive, ACQ580 for water and wastewater with pump functions such as pipe fill and dry-run protection, and ACS880 for heavy industrial duty with direct torque control. Size the drive on the motor's full-load current, not only its kW rating, and allow derating for the high ambient temperatures common in Gulf electrical rooms.

Where ABB products are used

In Oman and the GCC, ABB drives and motors run pumps, fans and compressors in water and wastewater plants, district cooling, oil and gas and industry. ABB flowmeters, level instruments and analysers are used in water utilities, power and desalination plants and refineries, and SACE breakers protect switchboards in buildings and plants.

ABB products we list

Family	Examples
AC drives	ACS580, ACS580-01-046A-4, ACQ580, ACS355, ACS310, ACS880-01, FEN-31 encoder module
Breakers, motor control and protection	SACE Tmax XT, XT3N 250, SACE Emax 2, AF09 contactor, PSR soft starter, REM615 relay
Flow measurement	ProcessMaster FEP300, AquaMaster4, CoriolisMaster FCB430, VortexMaster FSV430, SwirlMaster FSS430, OriMaster FPD500
Pressure, temperature and level	266DRH, 267CS multivariable, TTH300, K-TEK AT100, LMT200, MT5000 GWR, KM26 gauge
Analysers	Endura AZ20, AK100 hydrogen purity, Navigator AW641 silica, AW402 chlorine, AWT210
Control systems and actuators	AC500, AC500-S, S800 AI810, AC 800F SA 811F, Contrac RSD50, Contrac RHD4000

Ordering ABB products: what we need

Send the full type code from the nameplate (for example ACS580-01-046A-4 or 266DSH...) and, for spare parts, the ABB ID number (such as 3BSE008508R1 or 1SBL176001R3010). For drives, add the motor power and current and any option codes (+...). For instruments, send the complete order code, which sets range, materials and approvals. Baldor motors are listed on their own brand page.

Facts checked against ABB company filings and published histories of ASEA and Brown, Boveri & Cie, October 2026.

FAQ

Questions about the ABB 266DRH / 2600T Differential Pressure

Answers from our engineering team on installation, compatibility and integration.

01What is the remote seal construction used for on the 266DRH?

The remote seal isolates the transmitter sensing module from direct contact with the process medium via a capillary and diaphragm assembly, which is essential for corrosive, viscous, or high-temperature process fluids.

02What communication protocols does the 266DRH support?

The 266DRH supports HART, PROFIBUS PA, FOUNDATION Fieldbus, and WirelessHART, providing integration flexibility across different plant communication architectures.

03Is the 266DRH suitable for safety instrumented systems?

Yes, the 266DRH holds SIL2/SIL3 certification issued by TUV Nord according to IEC 61508, making it suitable for safety-critical loops.

04What is the battery life of the WirelessHART variant?

The WirelessHART version of the 266DRH has a battery life of approximately 10 years at 32-second update rates.

05Does Seven Star LLC supply this part across the GCC?

Yes, Seven Star LLC sources and supplies the ABB 266DRH differential pressure transmitter to refinery, gas processing, and petrochemical customers across Oman and the wider GCC region.