{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"266DRHHSSA1T7E1LSI2+S26RAHE2SFSM2N1SNNN","brand":"ABB","brandSlug":"abb","productSlug":"266DRHHSSA1T7E1LSI2~3S26RAHE2SFSM2N1SNNN","canonicalUrl":"https://aoctrl.com/abb/266DRHHSSA1T7E1LSI2~3S26RAHE2SFSM2N1SNNN","factsUrl":"https://aoctrl.com/api/mcp/products/266DRHHSSA1T7E1LSI2%2BS26RAHE2SFSM2N1SNNN","rawCanonicalId":null},"summary":{"shortDescription":"ABB 266DRHHSSA1T7E1LSI2+S26RAHE2SFSM2N1SNNN differential pressure transmitter, remote seal, HART and 4 to 20 mA output, span 2.67 to 160 kPa, AISI 316 L ss wetted, ASME CL 300 / 2 in.","salesMarkdown":"## What sits on the line: form factor and seal stack The ABB 266DRHHSSA1T7E1LSI2+S26RAHE2SFSM2N1SNNN ships as a differential pressure transmitter paired with a remote seal — the S 2 6 R A rotating flange diaphragm seal, flush and extended to ASME B16.5, mounted on an ASME CL 300 / 2 in. flange on the high-pressure side and connected by direct-mount construction, so no capillary tube is in the run. ## Sensor envelope: 2.67 to 160 kPa differential Span limits sit between 2.67 and 160 kPa, expressed equivalently as 26.7 to 1600 mbar and 10.7 to 642 inH2O — the 60:1 turndown gives the loop enough headroom to cover low dp filter and orifice service without re-ranging to a different body. The body is configured for differential measurement at standard static pressure, so it tracks dp across a single tap pair rather than absolute line pressure — the typical fit for level across a vessel, flow across an orifice, or filter dp on a gas train. ## Wetted side: 316 L, silicone fill, NACE where it counts Diaphragm material is AISI 316 L ss and the process flanges/adapters are AISI 316 L ss on a horizontal connection with 1/4 in. – 18 NPT-f direct process entry; bolts and gaskets on the wetted side are AISI 316 ss with Viton®, NACE per the quoted notes on non-exposed bolting. Fill fluid is silicone oil DC200 at 10 cSt, the standard fill for the differential measurement duty and the only fill quoted under this configuration. ## Loop output and hazardous area rating Output is HART and 4 to 20 mA — standard functionality on code 7 — which is the configuration the integrated digital LCD display option is tied to; the LCD fits on the barrel-housing head in AISI 316 L ss with an M20 x 1.5 (CM20) electrical entry, the same wiring path reserved for WirelessHART retrofits. Hazardous area certification is ATEX Intrinsic Safety Ex ia, so the loop can be wired into Zone 0/1 sensing lines with a suitable barrier, provided the barrier entity parameters match the Ex ia ratings on the nameplate. ## Tagging, sealing, and the line back to procurement Each unit ships with a stainless steel tag plate and certification plate, both laser-printed, so the order code and the serial stay readable in washdown and outdoor service; the seal surface is rated smooth, with no flushing ring plug or gasket ordered.","metaTitle":"266DRHHSSA1T7E1LSI2+S26RAHE2SFSM2N1SNNN ABB 266DRHH","metaDescription":"ABB 266DRHHSSA1T7E1LSI2+S26RAHE2SFSM2N1SNNN differential pressure transmitter with remote seal, 4–20 mA + HART, ATEX Ex ia.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Differential Pressure Transmitters"],"specifications":{"title":"266DRHHSSA1T7E1LSI2+S26RAHE2SFSM2N1SNNN","S 2 6 R A":"Rotating flange diaphragm seal (flush and extended) to ASME B16.5","Fill Fluid":"S = Silicone oil DC200 10 cSt","Application":"S = Differential measurement at standard static pressure","Product No.":"266DRHHSSA1T7E1LSI2+S26RAHE2SFSM2N1SNNN","description":"Differential Pressure Transmitter with Remote Seal","Integral LCD":"LS = Integrated digital LCD display (ONLY SELECTABLE WITH OUTPUT CODE 7)","Product type":"Differential Pressure Transmitter with Remote Seal + S26RA Rotating flange diaphragm seals Differential Pressure Transmitter with Remote Seal :-","Flushing Ring":"Plug and Gasket : N = No plug - No gasket","Shipping Weight":"15 Kg","lifecycle_stage":"current","Diaphragm Material":"SM = AISI 316 L ss","Estimated Lead Time":"6 - 8 weeks.","Seal Surface Finish":"2 = Smooth","Additional tag plate":"I2 = Tag and certification stainless steel plates and laser printing of tag S26RA Rotating flange diaphragm seals :-","Capillary Protection":"N = Extension tube for direct mount seal","SENSOR - Span limits":"H = 2.67 and 160 kPa, 26.7 and 1600 mbar, 10.7 and 642 inH2O.","Mounting Flange Material":"S = AISI 316 ss","Capillary Length m (Feet)":"1 = Direct-mount construction","Output/Additional options":"7 = HART and 4 to 20 mA - Standard functionality","Bolts/Gasket (wetted parts)":"1 = AISI 316 ss, Viton®, (Note 5), NACE (non exposed)","Hazardous area certifications":"E1 = ATEX Intrinsic Safety Ex ia","Mounting Flange Rating / Size":"E2 = ASME CL 300 / 2 in.","Extensions Length and Material":"F = Flush","Transmitter Side of Connection":"H = High pressure side","Housing material and electrical connection":"T = AISI 316 L ss ( barrel version) (I2 or I3 required), M20 x 1.5 (CM20), (TO BE USED for WirelessHART)\\","Diaphragm material / Fill fluid (wetted parts)":"S = AISI 316 L ss, Silicone oil, (one seal only to be quoted).","Process flanges/adapters material and connection (wetted parts)":"A = AISI 316 L ss (Horizontal connection), 1/4 in. – 18 NPT-f direct, (Note 5), NACE"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5,363.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5a5b78e22e05b8d548f8284927ce8373.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What does the S 2 6 R A rotating flange seal designation mean on this line?","answer":"S 2 6 R A is the rotating flange diaphragm seal — flush and extended — built to ASME B16.5, fitted on an ASME CL 300 / 2 in. flange on the high-pressure side, direct-mount to the transmitter body with no capillary."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/266DRHHSSA1T7E1LSI2~3S26RAHE2SFSM2N1SNNN","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/266DRHHSSA1T7E1LSI2~3S26RAHE2SFSM2N1SNNN when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}