ABB 266NSH Absolute Pressure Transmitter – 266NSHSSBBHE1L1B7M5CL

Product Overview

The ABB 266NSH absolute pressure transmitter comes from the ABB 2600T series, featuring an integrated high overload protection system. The transmitter measures absolute pressure from very low values, with a lower range limit of 0.07 kPa abs, making it suitable for measuring absolute pressure in a wide range of process applications.

The part number 266NSHSSBBHE1L1B7M5CL identifies a specific configuration of the 266NSH transmitter. The instrument features TTG (Through-The-Glass) keypad technology for local configuration without opening the cover, advanced diagnostics, and is certified SIL 2/SIL 3 in accordance with IEC 61508 by TUV Nord. WirelessHART versions are also available for wireless monitoring.

Key Features

• Absolute pressure transmitter with integrated high overload protection
• Sensor options from 0.07 kPa abs LRL up to 1350 bar overload capability
• HART communication with WirelessHART versions available
• TTG (Through-The-Glass) keypad for local configuration
• SIL 2 (1oo1) and SIL 3 (1oo2) certification per IEC 61508
• Turndown up to 100:1, stability of 0.15% of URL
• Advanced diagnostics and surge immunity 4 kV

Technical Specifications

Applications

The 266NSH is used for absolute pressure measurement in oil and gas, refining, chemical, power and water applications, including vacuum measurement, reactor and column pressure monitoring, and applications requiring high overload protection against pressure spikes.

Ordering and Selection

When selecting the ABB 266NSH transmitter, confirm the sensor range, connection and communication protocol, because each ABB 266NSH is configured by its order code for a specific pressure application. The part number 266NSHSSBBHE1L1B7M5CL identifies an ABB 266NSH absolute pressure transmitter with HART output, and the selected ABB 266NSH must be matched to the process pressure range and overload requirements. Our team can help you confirm that the ABB 266NSH you select is correct for your application.

Maintenance and Support

The ABB 266NSH transmitter requires minimal maintenance, and the process connection and housing seals should be checked periodically. Genuine spares and accessories for the ABB 266NSH are available through Seven Star LLC. Contact our team for assistance with the ABB 266NSH, and we will confirm availability and lead time for your project.

Industry Applications and Custom Support

The ABB 266NSH transmitter is trusted by operations and maintenance teams across process plants in Oman, the GCC and the wider Middle East region. Our customers select the 266NSH transmitter for reliability, genuine quality and dependable supply. Seven Star LLC provides custom support including technical selection, quotation and after-sales assistance, and we regularly supply this transmitter as part of preventive maintenance programs and shutdown packages. Whether you need a single unit or a complete set for a project, our team supports procurement and inspection.

The 266NSH transmitter measures the absolute pressure of the process, and the transmitter with the model code 266NSHSSBBHE1L1B7M5CL covers the standard configuration with the HART output.

The transmitter covers the standard pressure ranges of the process measurement, and the local display and the HART communication support the commissioning.

The ABB 266NSH absolute pressure transmitter is used for the measurement of the barometric and the process pressures, and the transmitter is configured for the HART communication.

The ABB 266NSH absolute pressure transmitter covers the barometric and the process pressure ranges, and the ABB 266NSH absolute pressure transmitter with the HART output is configured for the plant installation and the commissioning.

Why Seven Star LLC?

Seven Star LLC supplies genuine ABB pressure transmitters and spare parts to customers across Oman and the GCC. We verify part numbers and sensor configurations, ensuring the correct transmitter for your application.

Our engineers help you verify the exact model and revision before ordering, avoiding costly mismatches.

Decoding the 266NSH Order Code

Each ABB 2600T transmitter is defined by its order code. For the 266NSH, the code 266NSHSSBBHE1L1B7M5CL sets the sensor range, the materials of the wetted parts and fill fluid, the process connection, the housing, the approvals, the output and the options. To replace an installed unit correctly:

• Copy the complete order code and serial number from the transmitter nameplate, not only the model family.
• Check the calibrated range on the tag against the process data sheet, because the same sensor can be ranged differently.
• Confirm the process connection, the hazardous area certification and the electrical entry used at the installation.
• Check whether the loop is part of a safety instrumented function that requires the SIL-certified version.

Installation and Commissioning

Absolute pressure measurement is referenced to a perfect vacuum, so the transmitter reading does not change with barometric pressure. This makes it the right choice for vacuum columns, condensers and vapour pressure measurements. Mount the transmitter with impulse lines sloped so that condensate or gas cannot be trapped, and use a suitable manifold for isolation and venting. After wiring, check the loop current and HART communication. Then confirm the configured range, damping and units, using the TTG keypad or a HART communicator. Verify the zero and span against a calibrated absolute pressure reference. A gauge-pressure reference cannot be used for this without correction.

Maintenance and Troubleshooting

• A reading that drifts slowly is often caused by leaking fittings or a partially blocked impulse line, rather than the sensor.
• On vacuum service, even small leaks in the impulse line will raise the measured absolute pressure, so leak-test the connections first.
• Use the transmitter diagnostics over HART to check for sensor or electronics alarms before removing the unit.
• Keep the housing covers and cable entries sealed to protect the electronics from humidity and dust.

Applications in Oman and the GCC

Refineries, petrochemical plants and power stations in the region use absolute pressure measurement on vacuum distillation, steam turbine condensers and evacuated process vessels. The ABB 266NSH absolute pressure transmitter, with its high overload protection, is suited to these duties, where pressure transients occur during start-up and upsets.

Supply from Seven Star LLC

Seven Star LLC supplies ABB 2600T transmitters for projects and replacements. Send the complete order code, and our team will confirm the configuration before supply.

Request a Quote for ABB 266NSH Absolute Pressure Transmitter – 266NSHSSBBHE1L1B7M5CL

For the ABB 266NSH transmitter or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your measurement range, connection and configuration, and our specialists will respond with a detailed commercial proposal and the official ABB documentation.

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