{"product_id":"yokogawa-nfai143-h50-a4s00-analog-input-module","title":"Yokogawa NFAI143-H50\/A4S00 Analog Input Module","description":"\u003cp\u003eThe Yokogawa NFAI143-H50\/A4S00 is a 16-channel isolated analog input module for acquiring 4-20 mA current signals from field transmitters. It supports HART communication, configurable 2-wire or 4-wire transmitter connections on each channel, and a 10 ms data refresh cycle. The specified configuration includes a pressure clamp terminal block, model NFTA4S-00, for field wiring.\u003c\/p\u003e\n\u003ch3\u003eInput Configuration and Signal Processing\u003c\/h3\u003e\n\u003cp\u003eThe module accepts 4-20 mA analog signals across 16 isolated input channels. Its specified accuracy is +\/-0.1% of full scale, with a maximum temperature drift of +\/-0.01% per deg C. The 10 ms data refresh cycle defines how frequently input data is updated, while the 100 ms input step response time describes the specified response to a change in the input signal.\u003c\/p\u003e\n\u003cp\u003eEach channel can be configured for a 2-wire or 4-wire transmitter using a setting pin. The module provides a transmitter supply of 24.0 to 25.5 V, with an output current limit of 25 mA. The allowable input current is 24 mA, and overcurrent protection is provided.\u003c\/p\u003e\n\u003ch3\u003eElectrical Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe input-to-system withstand voltage is 1500 V AC for 1 minute. Input resistance is 250 ohms when the module is powered on and 500 kohms or more when powered off. These values are relevant when checking current-loop loading and evaluating the module's electrical isolation requirements.\u003c\/p\u003e\n\u003cp\u003eThe listed maximum current consumption is 230 mA at 5 V DC and 540 mA at 24 V DC. The transmitter supply output is separate from these module consumption ratings and has its own 25 mA current limit.\u003c\/p\u003e\n\u003ch3\u003eModel Configuration\u003c\/h3\u003e\n\u003cp\u003eThe ordering code identifies the communication option, protection configuration, basic type, and terminal block option. Yokogawa's published specifications identify -H as the HART communication option, 5 as the configuration without explosion protection, 0 as the basic type, and \/A4S00 as the analog pressure clamp terminal block option, NFTA4S-00.\u003c\/p\u003e\n\u003cfigure\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003eNFAI143-H50\/A4S00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eIsolated Analog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16, isolated\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\u003eHART Communication\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Current\u003c\/td\u003e\n\u003ctd\u003e24 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance, Power On\u003c\/td\u003e\n\u003ctd\u003e250 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance, Power Off\u003c\/td\u003e\n\u003ctd\u003e500 kohms or more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput-to-System Withstand Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 V AC for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvercurrent Protection\u003c\/td\u003e\n\u003ctd\u003eProvided\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Refresh Cycle\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Step Response Time\u003c\/td\u003e\n\u003ctd\u003e100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Supply\u003c\/td\u003e\n\u003ctd\u003e24.0-25.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Supply Output Current Limit\u003c\/td\u003e\n\u003ctd\u003e25 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Configuration\u003c\/td\u003e\n\u003ctd\u003e2-wire or 4-wire, selected per channel by setting pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Drift\u003c\/td\u003e\n\u003ctd\u003eMaximum +\/-0.01% per deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Current Consumption\u003c\/td\u003e\n\u003ctd\u003e230 mA at 5 V DC; 540 mA at 24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Block\u003c\/td\u003e\n\u003ctd\u003eNFTA4S-00, pressure clamp type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExplosion Protection Configuration\u003c\/td\u003e\n\u003ctd\u003eNo explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBasic Type\u003c\/td\u003e\n\u003ctd\u003e0\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the NFAI143-H50\/A4S00 support HART communication?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The -H suffix identifies the HART communication option. HART communication uses the same 4-20 mA current loop for analog measurement and superimposed digital communication; verify the host system's HART configuration when planning instrument access.\u003c\/p\u003e\n\u003cp\u003eQ: Can the module accept signals from both 2-wire and 4-wire transmitters?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The module specification provides a per-channel setting pin for selecting 2-wire or 4-wire transmitter configuration. Check the transmitter wiring and supply requirements before connecting each loop.\u003c\/p\u003e\n\u003cp\u003eQ: Is the NFAI143-H50\/A4S00 suitable for an explosion-protected installation?\u003c\/p\u003e\n\u003cp\u003eA: The 5 configuration code specifies no explosion protection. Do not treat this version as an explosion-protected module; select equipment and interface components according to the installation's applicable hazardous-area requirements.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":67921913151730,"sku":"NFAI143-H50\/A4S00","price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0730\/5589\/5794\/files\/NFAI143-H50A4S002.jpg?v=1793166401","url":"https:\/\/www.petrospare.com\/products\/yokogawa-nfai143-h50-a4s00-analog-input-module","provider":"Petro Spare Industrial Limited","version":"1.0","type":"link"}