{"product_id":"yokogawa-electric-corporation-acg10s-e2120aip903-coupler","title":"Yokogawa Electric Corporation ACG10S-E2120AIP903 Coupler","description":"\u003cdiv\u003e\u003cp\u003eThe Yokogawa AC1-5-S-D-R Automatic Calibration Unit automates zero- and span-calibration gas delivery to oxygen analyzers, commonly paired with Yokogawa ZR402G systems and ZR22G probes in boilers, furnaces, and industrial combustion processes. It supports analyzer-controlled, timed automatic, or manual override operation, enabling fully automatic or semi-automatic calibration via solenoid valves. Key specifications include 24 VDC control power for the solenoids and 120 VAC main power (model dependent), operating pressure around 20 psi (max ~35 psi), calibration gas flow about 0.6 LPM and reference air flow about 0.8 LPM, and a flowmeter range of 0.15–1 LPM. Gas connections use 1\/4\" FNPT fittings, with standard 1\/4\" copper tubing or a stainless steel option, and enclosures available as NEMA 4 or NEMA 4X depending on model. The unit provides a single-point calibration channel and is designed to automatically deliver zero and span calibration gases via the valve manifold; common replacements include Yokogawa AC4, AC8, and IAC-24 Integral Calibration Unit.\u003c\/p\u003e\u003c\/div\u003e","brand":"YOKOGAWA","offers":[{"title":"New","offer_id":46241932837098,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-001.png?v=1788727428","url":"https:\/\/gtghardware.com\/products\/yokogawa-electric-corporation-acg10s-e2120aip903-coupler","provider":"GTG Hardware","version":"1.0","type":"link"}