Remote Seal Differential Pressure Transmitter

The 266DRH is a premium model in the ABB 2600T series, featuring advanced remote seal technology. It is specifically designed to isolate the transmitter's sensing element from the process medium, making it the ideal choice for extreme temperatures, high viscosities, or corrosive fluids. By utilizing a capillary system, this remote seal differential pressure transmitter prevents the process fluid from entering the sensor housing, thereby eliminating clogging risks and protecting sensitive electronics. With its all-welded seal construction and plug-and-play modular electronics, the 266DRH offers a robust, low-maintenance solution that guarantees long-term stability and measurement accuracy.

Key Features and Technical Specifications

High Accuracy: Provides a base accuracy of ±0.06%, delivering precise data for critical control loops.
Intuitive Configuration: Features "Through-The-Glass" (TTG) technology, allowing users to configure parameters in the field without opening the cover, saving time and enhancing safety.
Advanced Diagnostics: Includes Plugged Impulse Line Detection (PILD) to identify process line blockages before they cause failure.
Safety Certified: Compliant with IEC 61508 for SIL 2 (1oo1) and SIL 3 (1oo2) applications, ensuring the highest safety standards.
Versatile Compatibility: Supports a wide range of protocols including HART, PROFIBUS PA, FOUNDATION Fieldbus, and WirelessHART.

Industry Applications and Specialized Design

The 266DRH is indispensable in sectors such as Chemical, Oil & Gas, and Food & Beverage. It excels in measuring liquid level, density, and interface in open or closed tanks where standard impulse lines would fail due to freezing or plugging. The system offers extensive options for wetted materials-including Tantalum, Hastelloy C-276, and Gold-plated diaphragms-to resist aggressive chemical attacks. Furthermore, its ability to operate under high vacuum or high temperature conditions makes this remote seal differential pressure transmitter a critical asset for complex processing facilities seeking to maximize uptime and reduce total cost of ownership.

Product Specifications

Feature / Parameter	Specification / Description
Model Description	266DRH: smartness beyond performances.
Base Accuracy	±0.06%
Range Limits	4 to 16000 kPa
Output Signal	4-20mA+ HART, Profibus PA, Foundation Fieldbus, WirelessHART. Multi-protocol platforms with interoperability and transmitter upgrade capabilities.
Regulatory Compliance	Compliant with PED Category III

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