Honeywell STR82D-21CS000-00000000 SmartLine Remote Seal Pressure Transmitter

Overview

The Honeywell STR82D-21CS000-00000000 is a SmartLine ST800 Series remote diaphragm seal pressure transmitter, engineered for applications where the process fluid is corrosive, viscous, high-temperature, or otherwise unsuitable for direct contact with a standard in-line sensor. The STR82D covers the lowest span in the STR800 remote-seal family, with a nominal range of 0–400 inH2O (0–1000 mbar), and uses a capillary-connected diaphragm seal to isolate Honeywell’s high-performance piezo-resistive sensor from the wetted process while still delivering SmartLine-class accuracy and diagnostics.

Seven Star LLC supplies the genuine Honeywell STR82D-21CS000-00000000 SmartLine remote diaphragm seal transmitter to process industry customers across Oman and the GCC. As a partner sourcing authentic Honeywell Process Solutions instrumentation, Seven Star supports refineries, petrochemical plants, and water treatment facilities in Muscat, Sohar, and Duqm with genuine SmartLine ST800 transmitters, remote seal engineering guidance, and full documentation for hazardous-area and safety-instrumented-system installations.

Measurement and Operating Principle

In the STR82D, process pressure acts on a diaphragm seal mounted directly at the vessel or pipe connection. The seal is filled with an incompressible fill fluid that transmits the pressure through a capillary tube to the transmitter’s piezo-resistive sensing element, without any process fluid ever entering the transmitter body itself. This remote-seal architecture means corrosive, high-viscosity, crystallizing, or high-temperature media — fluids that would damage or clog a conventional impulse-line connected transmitter — can be measured reliably and with minimal maintenance.

The Honeywell STR82D automatically compensates for static pressure and ambient temperature effects on the fill fluid and capillary, preserving measurement accuracy of up to 0.0375% of span across a rangeability of up to 100:1. Output is available via 4–20 mA with HART 7, Honeywell DE, or FOUNDATION Fieldbus digital protocols, and the transmitter provides continuous on-board diagnostics with Health Watch status indication so operators can identify sensor drift, seal issues, or wiring faults before they affect control loop integrity.

Engineering Design

The Honeywell STR82D-21CS000-00000000 electronics housing is polyester powder-coated aluminum (optional 316/316L stainless steel) rated IP66/IP67, suitable for outdoor and washdown environments across Oman’s coastal and desert climate extremes, with an ambient operating range of -55°C to +90°C. Wetted diaphragm seal materials are available in 316L stainless steel, Monel, Hastelloy C, or tantalum to match aggressive process chemistries, and seal styles include flush flange, extended diaphragm, pancake, sanitary, chemical tee/Taylor wedge, threaded, and saddle configurations to fit virtually any vessel or nozzle connection.

Overpressure protection is rated to Honeywell’s World Class standard and the transmitter is SIL 2/3 compliant per IEC 61508, with certifications including FM, CSA, ATEX, IECEx, and marine approvals from ABS, BV, DNV, KR, and LR. A modular LCD local display with three-button configuration allows on-site zero, span, and parameter adjustment without a separate communicator, while external configuration is fully supported via HART or DE handheld and DTM-based tools.

Honeywell STR82D Key Features

• Remote diaphragm seal design isolates the sensor from corrosive, viscous, or high-temperature process media
• 0–400 inH2O (0–1000 mbar) range with accuracy up to 0.0375% of span
• Rangeability up to 100:1 with automatic static pressure and temperature compensation
• HART 7, Honeywell DE, and FOUNDATION Fieldbus digital communication options
• Wetted seal materials in 316L SS, Monel, Hastelloy C, or tantalum for chemical compatibility
• SIL 2/3 compliant per IEC 61508 with World Class overpressure protection
• IP66/IP67 rated housing, ambient range -55°C to +90°C
• Comprehensive on-board diagnostics with Health Watch critical/non-critical indication

Industrial Applications

The Honeywell STR82D-21CS000-00000000 is specified for high-accuracy level measurement in pressurized vessels within hydrocarbon processing, as well as flow and pressure measurement of slurries, high-viscosity fluids, and corrosive chemicals in refining, petrochemical, and chemical plants. Typical installations include reactor and column level measurement, tank farm interface level monitoring, and pressure measurement on lines carrying crystallizing or fouling media where a direct-wetted transmitter would require frequent cleaning or replacement.

Seven Star LLC supports oil and gas, petrochemical, and water and wastewater customers throughout Oman — including Muscat, Sohar, and Salalah — with genuine Honeywell SmartLine STR82D remote seal transmitters, correct seal-material and fill-fluid selection guidance, and documentation for ATEX/IECEx hazardous-area and SIL-rated safety instrumented system applications.

Honeywell STR82D Technical Specifications

Request a Quote

Contact Seven Star LLC for pricing, lead time, and stock availability on the genuine Honeywell STR82D remote seal transmitter SmartLine remote seal transmitter in Oman. Our engineering team can help confirm the correct seal style, fill fluid, and wetted material for your process application.