{"product_id":"aai135-h00-k4a00-yokogawa-analog-input-module-8-channel","title":"AAI135-H00\/K4A00 Yokogawa Analog Input Module-8-channel","description":"\u003ch2\u003eYokogawa AAI135-H00\/K4A00 Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eThe\u003cstrong\u003eYokogawa AAI135-H00\/K4A00\u003c\/strong\u003e，also cataloged as the\u003cstrong\u003eAAI135\u003c\/strong\u003eAnalog Input Module, operates as a dedicated hardware component for 4-20 mA current signal acquisition within DCS analog input processing networks. Configured for field current loop termination and HART superimposed digital communication decoding, the\u003cstrong\u003eYokogawa AAI135-H00\/K4A00\u003c\/strong\u003e(\u003cstrong\u003eAAI135\u003c\/strong\u003eAnalog Input Module) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAAI135\u003c\/strong\u003e: Base model, 8-channel isolated 4-20 mA analog input module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eH00\u003c\/strong\u003e: Basic configuration set with HART communication support enabled via module interface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eK4A00\u003c\/strong\u003e: KS cable interface adapter option, compatible with ATK4A-00 termination assembly\u003c\/li\u003e\n\u003c\/ul\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 AAI135-H00\/K4A00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e8-channel, isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Current\u003c\/td\u003e\n\u003ctd\u003e25 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstanding Voltage\u003c\/td\u003e\n\u003ctd\u003e500 V AC (input-system, 1 min); 500 V AC (channel-channel, 1 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance\u003c\/td\u003e\n\u003ctd\u003e290 ohm (20 mA, power ON) to 450 ohm (4 mA, power ON); \u0026gt;= 500 k ohm (power OFF)\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\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eHART protocol overlay supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Signal Conditioning and HART Loop Handling\u003c\/h3\u003e\n\u003cp\u003eThe module implements HART protocol superimposition on 4-20 mA analog loops, enabling simultaneous analog measurement and digital field device communication without signal separation hardware. Channel-to-channel galvanic isolation reduces inter-channel electrical coupling under mixed-loop termination conditions, maintaining stable current acquisition across all 8 inputs in dense I\/O configurations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the module support hot-swap replacement under live backplane power?\u003c\/strong\u003e\u003cbr\u003eA: Hot-swap capability depends on system rack design; electrical isolation is maintained per channel, but backplane behavior is system-defined.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the effect of HART communication on 4-20 mA measurement accuracy?\u003c\/strong\u003e\u003cbr\u003eA: HART signal is superimposed at low amplitude frequency; analog current measurement remains within specified +\/- 16 uA accuracy band.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can unused channels be left open-circuit?\u003c\/strong\u003e\u003cbr\u003eA: Open channels should follow termination guidelines to avoid noise pickup; input resistance in power OFF state is \u0026gt;= 500 k ohm.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaintain correct polarity for each 4-20 mA loop connection at terminal interface\u003c\/li\u003e\n\u003cli\u003eUse shielded twisted pair wiring for all analog input channels\u003c\/li\u003e\n\u003cli\u003eGround cable shields at a single-point earth reference to avoid ground loop currents\u003c\/li\u003e\n\u003cli\u003eEnsure KS cable interface adapter ATK4A-00 is fully seated before energizing system\u003c\/li\u003e\n\u003cli\u003eAvoid routing analog input wiring parallel to high-voltage or switching power lines\u003c\/li\u003e\n\u003cli\u003eVerify channel isolation integrity before commissioning multi-loop installations\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44146461769816,"sku":"AAI135-H00\/K4A00","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/AAI135-H00K4A00.jpg?v=1779848718","url":"https:\/\/www.industriaxplc.com\/products\/aai135-h00-k4a00-yokogawa-analog-input-module-8-channel","provider":"IndustriaX Limited","version":"1.0","type":"link"}