{"product_id":"abb-bailey-ntai04-analog-input-termination-unit","title":"ABB Bailey NTAI04 Analog Input Termination Unit","description":"\u003ch3\u003eABB Bailey NTAI04 RTD Analog Input Termination Unit\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB Bailey NTAI04\u003c\/strong\u003e is an \u003cstrong\u003eRTD Analog Input Termination Unit\u003c\/strong\u003e for the INFI 90 distributed control system. It provides dedicated termination and signal conditioning for Resistance Temperature Detector (RTD) sensors, delivering high-accuracy temperature measurement for critical process control applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e NTAI04\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAssembly Number:\u003c\/strong\u003e 6635700A1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e RTD Analog Input Termination Unit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e INFI 90 \/ Symphony\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e ABB \/ Bailey Controls\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 8 channels (typical)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Type:\u003c\/strong\u003e RTD (3-wire or 4-wire configuration)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 0.1°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 32 screw terminals\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Requirements:\u003c\/strong\u003e 24 V DC or 48 V DC (varies by source)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 178 × 25 × 178 mm (7.0\" × 1.0\" × 7.0\") or 220 × 160 × 35 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.3 kg to 0.8 kg (varies by source)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to 60°C (32°F to 140°F)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -40°C to 85°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 5% to 95% non-condensing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e INFI 90 field termination panel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupported Protocols:\u003c\/strong\u003e Modbus, PROFIBUS DP, Foundation Fieldbus (communication gateway variants)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRTD-Optimized Design:\u003c\/strong\u003e Dedicated circuitry for 3-wire and 4-wire RTD connections eliminates lead wire resistance errors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Resolution:\u003c\/strong\u003e 0.1°C resolution provides precise temperature measurement for critical control loops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e32 Screw Terminals:\u003c\/strong\u003e Ample termination points for multi-wire RTD configurations and shield grounding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal Isolation:\u003c\/strong\u003e Galvanic isolation protects DCS electronics from field ground loops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFieldbus Gateway Option:\u003c\/strong\u003e Some variants support Modbus, PROFIBUS, and Foundation Fieldbus for flexible integration.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBoiler and turbine bearing temperature monitoring\u003c\/li\u003e\n  \u003cli\u003eReactor vessel temperature measurement\u003c\/li\u003e\n  \u003cli\u003eHeat exchanger performance monitoring\u003c\/li\u003e\n  \u003cli\u003eProcess heater and furnace temperature control\u003c\/li\u003e\n  \u003cli\u003eEnvironmental chamber temperature profiling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What RTD types does NTAI04 support?\u003c\/strong\u003e\u003cbr\u003e\nA: The NTAI04 typically supports \u003cstrong\u003ePt100, Pt200, Pt500, Pt1000, Ni100, Ni120, and Cu10\u003c\/strong\u003e RTD types. Verify specific type support in your module documentation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can NTAI04 be used with thermocouples?\u003c\/strong\u003e\u003cbr\u003e\nA: The NTAI04 is optimized for \u003cstrong\u003eRTD sensors\u003c\/strong\u003e. For thermocouple applications, use the NTAI02 or dedicated thermocouple termination units with appropriate slave modules.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 3-wire and 4-wire RTD connections on NTAI04?\u003c\/strong\u003e\u003cbr\u003e\nA: \u003cstrong\u003e3-wire\u003c\/strong\u003e compensates for lead wire resistance in one leg; \u003cstrong\u003e4-wire\u003c\/strong\u003e uses Kelvin connection to eliminate lead resistance entirely, providing highest accuracy.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eMount NTAI04 in standard INFI 90 field termination panel slot.\u003c\/li\u003e\n  \u003cli\u003eConnect RTD sensors to designated terminals per wiring diagram (3-wire or 4-wire).\u003c\/li\u003e\n  \u003cli\u003eVerify lead wire resistance compensation settings for 3-wire configurations.\u003c\/li\u003e\n  \u003cli\u003eConnect shield wires to ground bus at one end only.\u003c\/li\u003e\n  \u003cli\u003eLink NTAI04 to IMASI02\/IMASI03 analog input slave module.\u003c\/li\u003e\n  \u003cli\u003eConfigure RTD type, temperature range, and engineering units in MFP function blocks.\u003c\/li\u003e\n  \u003cli\u003eCalibrate against ice bath (0°C) and boiling point (100°C) references.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRTD Type:\u003c\/strong\u003e Confirm your temperature sensor type (Pt100, Ni100, etc.) is supported by NTAI04.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiring Configuration:\u003c\/strong\u003e Use 4-wire connection for highest accuracy; 3-wire is acceptable for most industrial applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Verify RTD element covers your process temperature range (Pt100: -200°C to +850°C typical).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e If fieldbus gateway functionality is required, specify Modbus\/PROFIBUS variant.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53763693248696,"sku":"NTAI04","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/NTAI051.jpg?v=1770889096","url":"https:\/\/www.globalpetroparts.com\/products\/abb-bailey-ntai04-analog-input-termination-unit","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}