1. Product Overview: 

The ABB 266GST high-performance gauge pressure transmitter is a high-performance transmitter designed for gauge pressure measurement, using a standard pressure structure. It is suitable for measuring the pressure of liquids, gases, or steam, as well as the level of open tank liquids. Its long-term stability and reliability ensure excellent performance under harsh conditions.
In addition to pluggable terminals, the transmitter's electronic circuit board has self-configuration capabilities, allowing for on-site replacement to improve factory efficiency. The unique hot-swappable field display allows for easy configuration settings, helping customers save time and maintenance and spare parts costs. Moreover, the innovative TTG window technology enables on-site operations without opening the cover in explosion-proof situations, saving a significant amount of time.

Here’s a focused rundown of the ABB 266GST key features that make it a standout in high-performance gauge pressure measurement:

High Accuracy: Up to ±0.025% of calibrated span with advanced compensation technology.

Wide Rangeability: 100:1 turndown ratio for flexible configuration across applications.

Extended Stability: 10-year long-term stability of ±0.15% URL, reducing maintenance frequency.

SIL Certification: Fully SIL2/SIL3 compliant, ensuring functional safety in critical processes.

Harsh Environment Ready: IP66/67, NEMA 4X, and explosion-proof/hazardous area certifications.

TTG Keypad Interface: Allows on-site configuration without removing the cover—even with gloves.

Sensor Versatility: Handles gauge pressure up to 600 bar; supports differential and absolute pressure models in the same 266 series.

HART/Profibus/Fieldbus Protocols: Wide communication compatibility with leading DCS systems.

2. Technical Parameters:
 

3. Frequently Asked Questions – ABB 266GST

1. What is the ABB 266GST used for? 

It’s designed for gauge pressure measurement in liquids, gases, or steam. It’s also suitable for open tank level measurement.

2. What’s the accuracy of the 266GST? 

It offers ±0.025% or ±0.04% of calibrated span, depending on configuration.

3. Is it suitable for safety-critical applications? 

Yes, it’s SIL2/SIL3 certified per IEC 61508, making it ideal for safety instrumented systems.

4. What communication protocols are supported? 

It supports HART, Profibus PA, and Foundation Fieldbus.

5. Can it be configured without opening the housing? 

Yes, the TTG (Through-The-Glass) keypad allows local configuration—even in hazardous areas.

6. What’s the maximum pressure range? 

Up to 600 bar, depending on the selected sensor code.

7. What’s the long-term stability? 

It maintains ±0.15% of URL over 10 years, minimizing recalibration needs.

8. What certifications does it carry? 

It’s certified for ATEX, IECEx, FM, CSA, and complies with PED Category III and RoHS II.

9. What’s the operating temperature range? 

Ambient: −40 °C to +85 °C; Process: up to 125 °C.

10. Can it be used in explosion-proof environments? 

Absolutely—it’s built for hazardous area installations with robust housing and certifications.