SmartLine STR800 – Remote Diaphragm
SmartLine® ST800 Remote Diaphragm Seal Transmitters provide accurate measurement for a wide variety of applications involving corrosive or high-temperature process fluids.
SmartLine® ST800 Remote Diaphragm Seal Transmitters provide accurate measurement for a wide variety of applications involving corrosive or high-temperature process fluids.
Honeywell offers the following ST800 Remote Diaphragm Seal Transmitters:
STR82D: 0–400 inH₂O (0–1000 mbar)
STR83D: 0–100 psig (0–7 bar)
STR84G: 0–500 psig (0–35 bar)
STR87G: 0–3000 psig (0–210 bar)
STR84A: 0–500 psia (0–35 bar absolute)
Diaphragm Seal / Process Interface Options
Multiple remote seal types supported: flush flange, extended diaphragm flange, pancake, sanitary, chemical tee (Taylor wedge), saddle, threaded, calibration rings.
Capillary options: stainless steel armored or PVC-coated armor, various lengths.
Meter body options: welded meter body or 2” stainless nipples.
Typical “standard” accuracy: up to ± 0.065% of span.
Some sources / variants claim even tighter accuracy (e.g., 0.0375%) depending on model.
Very high rangeability (turndown): up to 100:1.
Automatic compensation for static pressure and temperature, which helps maintain accuracy even in challenging conditions.
On-board diagnostics: transmitters include advanced health monitoring.
Supports NAMUR NE‑107 extended diagnostics (for Fieldbus / FF) per spec.
Dual‑seal design for high safety (meets ANSI/NFPA 70‑202 and ISA 12.27.0) to prevent leaks.
Over‑pressure protection built into the transmitter design.
Modular construction: electronics, display, and terminal modules are replaceable in the field.
Supports multiple local display options: standard alphanumeric LCD or advanced graphic LCD.
External access for zero, span, and configuration via buttons.
Polarity-insensitive electrical connections (reduces wiring errors).
Supports: HART version 7, Honeywell Digitally Enhanced (DE), and FOUNDATION™ Fieldbus.
Supports configuration via handheld devices, PC (Honeywell Field Device Manager), etc.
Process-wetted materials (diaphragm) are available in different options (e.g., 316L stainless steel; other alloys possible) per seal type.
Fill fluids: multiple options including Silicone 200, CTFE, Silicone 704, NEOBEE M‑20, depending on temperature and application.
Capillary lengths and material selection according to application: up to certain feet, with specific capillary size / type.
Ambient / electronics temperature limits depend on housing and seal type.
Power supply: for HART / DE / Fieldbus versions, sees typical SmartLine supply voltages.
Functional safety: versions compliant with SIL 2 / SIL 3 available.
Modular design helps with maintaining approvals even after field module replacements.
Compatible with Honeywell Experion PKS control system for integration.