{"product_id":"yokogawa-asi133-h00-fio-analog-input-module","title":"Yokogawa ASI133-H00 FIO Analog Input Module","description":"\u003ch2\u003eYokogawa ASI133-H00 FIO Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for 4-20 mA analog signal acquisition in Yokogawa CENTUM VP \/ FIO I\/O architecture, the \u003cstrong\u003eYokogawa ASI133-H00\u003c\/strong\u003e (\u003cstrong\u003eASI133-H00\u003c\/strong\u003e Analog Input Module) provides direct electrical interface for field transmitter current loop measurement and A\/D conversion through isolated input channels.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModelBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa ASI133-H00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.30 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperatingTemp\u003c\/td\u003e\n\u003ctd\u003eNot specified (industrial module class, typical DCS range assumed by system design)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowerConsumption\u003c\/td\u003e\n\u003ctd\u003e5 VDC: 150 mA \/ 24 VDC: 450 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e8 channels, isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstanding Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance\u003c\/td\u003e\n\u003ctd\u003e400 Ohm to 925 Ohm (power ON condition dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-16 uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStep Response Time\u003c\/td\u003e\n\u003ctd\u003e100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Update Period\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHART Support\u003c\/td\u003e\n\u003ctd\u003eAvailable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Supply\u003c\/td\u003e\n\u003ctd\u003e16 VDC or higher (20 mA current limited)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eYokogawa 4-20 mA HART Channel Isolation Architecture\u003c\/h3\u003e\n\u003cp\u003eThe ASI133-H00 implements channel-to-system galvanic isolation for each of the 8 input channels, enabling independent loop measurement without shared reference drift. The 4-20 mA interface is designed to maintain measurement linearity under variable loop impedance conditions, while preserving HART FSK signaling integrity across the same current loop.\u003c\/p\u003e\n\u003cp\u003eHART communication is transparently passed through the input circuitry, allowing bidirectional digital overlay without interrupting analog conversion. The isolation barrier supports suppression of ground potential differences between field transmitters and system backplane, maintaining stable conversion accuracy within +\/-16 uA tolerance.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the ASI133-H00 accept both 2-wire and 4-wire transmitters?\u003cbr\u003eA: Yes. Input impedance and loop supply design support both 2-wire loop-powered and 4-wire externally powered 4-20 mA transmitters, with independent channel isolation.\u003c\/p\u003e\n\u003cp\u003eQ: Does channel isolation allow shared field grounding?\u003cbr\u003eA: No. Each channel is galvanically isolated from system ground, preventing shared ground reference coupling across channels.\u003c\/p\u003e\n\u003cp\u003eQ: What happens to HART signals during A\/D conversion?\u003cbr\u003eA: HART FSK signals are superimposed on the 4-20 mA loop and pass through the input stage without attenuation of digital modulation components.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eField wiring shall maintain twisted-pair routing for each 4-20 mA loop, with shield termination performed at a single control cabinet ground point only. Do not distribute shield grounding across field junctions.\u003c\/p\u003e\n\u003cp\u003eLoop supply polarity must be verified before energizing transmitter circuits. Input terminals must not exceed allowable input current of 22.5 mA per channel.\u003c\/p\u003e\n\u003cp\u003eMaintain separation between analog input wiring and high-voltage or switching conductors to reduce induced coupling on low-level current loops. Ensure proper seating of pressure clamp terminals (ATSA3 series) before power application.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44163875176536,"sku":"ASI133-H00","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/ASI133-H00-2.jpg?v=1780307214","url":"https:\/\/www.industriaxplc.com\/products\/yokogawa-asi133-h00-fio-analog-input-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}