{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"266DDHFSSA2B7LSI2H3+S26RAHG1SFSM2N1SNNN","brand":"ABB","brandSlug":"abb","productSlug":"266DDHFSSA2B7LSI2H3~3S26RAHG1SFSM2N1SNNN","canonicalUrl":"https://aoctrl.com/abb/266DDHFSSA2B7LSI2H3~3S26RAHG1SFSM2N1SNNN","factsUrl":"https://aoctrl.com/api/mcp/products/266DDHFSSA2B7LSI2H3%2BS26RAHG1SFSM2N1SNNN","rawCanonicalId":null},"summary":{"shortDescription":"ABB 266DDH Differential Pressure Transmitter, 0.06% base accuracy, with S26RA Rotating Flange Diaphragm Seal (flush, ASME CL150 / 3 in.), silicone oil fill, AISI 316L SS wetted parts, M20x1.5 aluminium barrel housing.","salesMarkdown":"The ABB 266DDHFSSA2B7LSI2H3+S26RAHG1SFSM2N1SNNN is a differential pressure transmitter paired with a rotating flange diaphragm seal — a configured assembly for DP measurement on processes requiring a flush or extended diaphragm seal to ASME B16.5. The transmitter side carries a base accuracy of 0.06 %, which means the measurement uncertainty stays under six hundredths of a percent of the calibrated span; for a 40 kPa span that is roughly 24 Pa of error. The seal side is a S26RA rotating flange design, flush-mount, rated ASME CL150 at 3-inch size, with AISI 316L SS diaphragm and PTFE-faced bolts/gasket. Span limits are set to 0.67 and 40 kPa (6.7 to 400 mbar), so this variant is suited for low-to-moderate differential ranges — common on filter monitoring, level measurement on closed tanks, or flow across an orifice plate. The fill fluid is silicone oil DC200 10 cSt, standard for clean process fluids; the direct-mount construction (capillary length = 1, direct mount) eliminates the capillary run and keeps the seal rigidly attached to the transmitter. The assembly includes material traceability per EN 10204-3.1 for the process-wetted parts (inspection certificate), which covers the diaphragm, flange, and seal face. That certification is baked into the order code via the H3 suffix — no separate paperwork request needed. The transmitter housing is an aluminium alloy barrel with M20 x 1.5 electrical connection (CM20). That is the standard metric conduit entry for European panels; if your panel uses 1/2 NPT, you will need an adapter. The seal mounts on the high-pressure side of the process (H = high-pressure side connection), with a flush diaphragm and smooth surface finish (Seal Surface Finish = 2, smooth). No flushing ring is included (N = none). If the process fluid is prone to buildup or requires periodic flushing, you will need to order a flushing ring separately. The direct-mount design means the seal bolts directly to the transmitter manifold — no capillary tubing to route, which simplifies panel layout and reduces the risk of mechanical damage during installation. ## What the Config Code Tells You The full order code breaks down into two halves: the transmitter (266DDHFSSA2B7LSI2H3) and the seal (S26RAHG1SFSM2N1SNNN). The transmitter half specifies the sensor span (F = 0.67-40 kPa), housing (B = aluminium barrel M20x1.5), wetted diaphragm material (S = AISI 316L SS with silicone oil fill), process connection (A = AISI 316L SS, 1/4-18 NPT-f horizontal), and the material traceability (H3). The seal half specifies the rotating flange design (S26RA), ASME CL150 / 3 in. rating (G1), flush diaphragm (F), AISI 316 SS flange material (S), PTFE bolts/gasket (2), and no flushing ring (N). The additional tag plate (I2) means a laser-engraved stainless steel tag is attached — useful for permanent identification in the field.","metaTitle":"ABB 266DDHFSSA2B7LSI2H3+S26RAHG1SFSM2N1SNNN Differential Pre","metaDescription":"ABB 266DDHFSSA2B7LSI2H3+S26RAHG1SFSM2N1SNNN differential pressure transmitter with rotating flange diaphragm seal. Base accuracy 0.06%. Current production. Sourced to order against","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Differential Pressure Transmitters"],"specifications":{"title":"266DDHFSSA2B7LSI2H3+S26RAHG1SFSM2N1SNNN","266DDH":"Differential Pressure Transmitter with direct mount seal – BASE ACCURACY 0.06 %","BASE MODEL":"S 2 6 R A = Rotating flange diaphragm seal (flush and extended) to ASME B16.5","Fill Fluid":"S = Silicone oil DC200 10 cSt","Product No.":"266DDHFSSA2B7LSI2H3+S26RAHG1SFSM2N1SNNN","description":"Differential Pressure Transmitter + Rotating Flange Diaphragm Seal (Flush and Extended)","Product type":"Differential Pressure Transmitter + Rotating Flange Diaphragm Seal (Flush and Extended)","Flushing Ring":"Plug and Gasket : N = None","Shipping weight":"15 Kg","lifecycle_stage":"current","Diaphragm Material":"SM = AISI 316 L ss","266DDHFSSA2B7LSI2H3":"Differential Pressure Transmitter","Estimated Lead Time":"10 - 12 weeks.","S26RAHG1SFSM2N1SNNN":"Rotating Flange Diaphragm Seal (Flush and Extended)","Seal Surface Finish":"2 = Smooth","Additional tag plate":"I2 = Laser printing of tag on stainless steel plate","Capillary Protection":"N = Extension tube for direct mount seal","SENSOR - Span limits":"F = 0.67 and 40 kPa, 6.7 and 400 mbar, 2.67 and 160 inH2O","Material traceability":"H3 = Inspection certificate EN 10204–3.1 of process wetted parts","Flushing Ring Material":"N = None","Use code - 8th character":"S","Capillary Length m (Feet)":"1 = Direct-mount construction","Mounting Flange Material -":"S = AISI 316 ss","Bolts/Gasket (wetted parts)":"2 = AISI 316 ss PTFE","Mounting Flange Rating / Size":"G1 = ASME CL 150 / 3 in.","Extensions Length and Material":"F = Flush","Transmitter Side of Connection":"H = High pressure side","Housing material and electrical connection":"B = Aluminium alloy ( barrel version) M20 x 1.5 (CM 20)","Diaphragm material / Fill fluid (wetted parts)":"S = AISI 316 L ss, Silicone oil (one direct mount seal only to be quoted)","Process flanges/adapters material and connection (wetted parts)":"A = AISI 316 L ss (Horizontal connection), 1/4 – 18 NPT-f direct"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,227.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7b2dbf6dddc5f6631dc259ebf2c59e46.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the base accuracy of this differential pressure transmitter?","answer":"The base accuracy is 0.06 % of the calibrated span. For a 40 kPa span, that translates to approximately 24 Pa of measurement uncertainty."},{"question":"What compliance documentation comes with this assembly?","answer":"The order code includes material traceability per EN 10204-3.1 (inspection certificate 3.1) for the process-wetted parts. No RoHS, REACH, or UL listing is specified in the configuration."},{"question":"Where can I buy 266DDHFSSA2B7LSI2H3+S26RAHG1SFSM2N1SNNN and get current pricing?","answer":"The assembly is sourced through independent distribution channels. Submit an RFQ for current availability and pricing; lead time is typically 10 to 12 weeks for a factory-configured unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/266DDHFSSA2B7LSI2H3~3S26RAHG1SFSM2N1SNNN","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/266DDHFSSA2B7LSI2H3~3S26RAHG1SFSM2N1SNNN 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}}