Hazardous-area marking before anything else
The ABB 266DSHPSSB1A1E1L1B1 ships with ATEX Intrinsic Safety Ex ia marking, which is the prerequisite for installation in Zone 1 hazardous areas where the loop must be protected by a certified barrier — confirm the Ex marking matches the area classification on the loop sheet before the device leaves the storeroom. It is a 266DSH series differential pressure transmitter wired for differential measurement at standard static pressure (S), with sensor span limits from 0.24 to 24 bar — that range covers the typical hydrostatic, filter, and level-by-differential-pressure services on a process skid.
Sensor span and the dP services it actually fits
The span limits sit at 0.24 and 24 bar with 3.5 to 348 psi equivalent, so the same platform handles a tight clean-room filter ΔP and a mid-range separator level service without re-ranging hardware — only the sensor trim and the HART configuration change between applications. Output is HART plus 4 to 20 mA with advanced functionality (1), which includes the R1 option set — that gives the loop configurable damping, flow linearisation, and remote re-range via a handheld or asset-management system, removing the need for a local span screw.
Wetted parts and process-side construction
The diaphragm is AISI 316L stainless steel with silicone oil fill (S) and the process flanges/adapters are AISI 316L ss on a horizontal 1/2 in. – 14 NPT-f connection through adapter (B) — 316L with silicone fill is the default selection for hydrocarbon, water, and most chemical services; the horizontal connection simplifies impulse piping on a pipe stand. Bolts and gasket are AISI 316 ss with Viton® for standard, high-static, and gauge versions (1) — Viton limits the chemical compatibility envelope, so anything beyond hydrocarbons and mild chemicals needs a review against the process media before sign-off.
Housing, display, and field wiring
The housing is aluminium alloy in the barrel form with a 1/2 in. – 14 NPT electrical entry (A) — the barrel geometry fits the standard pipe/wall mounting bracket in carbon steel (, not suitable for AISI housings), giving a fixed pipe-stand or wall-mount installation without an extra adaptor plate. A digital LCD with integrated keypad is fitted locally, which lets the field tech configure tags, units, and damping without a handheld communicator during commissioning and loop checks.
Sourcing and lead-time reality
The model carries a current lifecycle stage with an estimated lead time of 8 to 10 weeks — a long factory lead time on a hazardous-area instrument means the MRO bin needs a strategic spare if a single failure can take a process unit off-line, and the BOM position should be flagged at quote time rather than at PO time. Independent distribution quotes the 266DSHPSSB1A1E1L1B1 to order against the BOM; current pricing and availability are confirmed against an RFQ, with full traceability on the Ex marking and wetted-parts certificate at shipment.