Remote seal pressure transmitter with ATEX certification
The ABB 266DRHMSRRSB1E1L1B1H1+S26RAHE1SFSM2AGSNNN+S26RALE1SFSM2AGSNNN is a gauge pressure transmitter paired with two S26RA rotating flange diaphragm seals — one flush, one extended — for applications where the process fluid must be isolated from the transmitter cell. Its span limits of 10 to 600 kPa (0.1 to 6 bar, 1.45 to 87 psi) define the calibrated range; the transmitter outputs a 4 to 20 mA signal with HART digital communication, which means the loop-powered signal carries both the analog pressure reading and digital configuration data on the same two wires. The ATEX Intrinsic Safety certification — II 1 G and II 1/2 G Ex ia IIC T6; II 1 D Ex iaD 20 T 95 °C — qualifies this transmitter for installation in Zone 0, Zone 1, and Zone 2 gas atmospheres as well as combustible dust areas, making it suitable for refineries, chemical plants, and other hazardous processing environments.
Wetted materials and fill fluid for process compatibility
The diaphragm material is AISI 316L stainless steel, and the fill fluid is silicone oil DC200 10 cSt — the combination covers most aqueous, mild chemical, and hydrocarbon services without corrosion concerns. The mounting flange is rated ASME CL 150 / 2 in. in AISI 316 ss, and the capillary protection is AISI 316L ss armour with a capillary length of 4 m (13 ft) — this gives flexibility in locating the transmitter away from the process tap while maintaining mechanical protection of the fill tube. Material traceability to EN 10204–2.1 is included (H1 option), providing a certificate of compliance with the order for the process wetted parts — a documented requirement for many quality-management systems in pharmaceutical and food processing.
Current production and sourcing posture
The estimated lead time is 8 to 10 weeks — typical for a built-to-order transmitter with remote seals, where the capillary length, diaphragm material, and flange rating are configured per the BOM line.