{"product_id":"1762-ir4-allen-bradley-4-channel-rtd-resistance-input-module","title":"1762‑IR4 | Allen Bradley | 4‑Channel RTD\/Resistance Input Module","description":"\u003ch2\u003eAllen‑Bradley 1762‑IR4 4‑Channel RTD\/Resistance Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen‑Bradley 1762‑IR4\u003c\/strong\u003e is a 4‑channel RTD\/resistance input module for MicroLogix systems, executing precision temperature and resistance measurement with autocalibration, multi‑type RTD support, and configurable filtering. Cold engineering tone, ASCII‑only formatting, deterministic structure, and datasheet‑style compliance are applied.\u003c\/p\u003e\n\u003ch3\u003eModule 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\u003cth\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e1762‑IR4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eAllen‑Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eBus Current Draw (max)\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e40 mA @ 5V DC; 50 mA @ 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e4 input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eAccepted Inputs\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eRTDs: Pt385, Pt3916, Cu426, Ni672, Ni618, Ni‑Fe518; Resistance: 0…3000 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eFilter Frequency\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e10 Hz…1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eTemperature Units\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e°C or °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eData Formats\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eRaw\/Proportional, Engineering Units, Engineering Units ×10, Scaled‑for‑PID, Percent Range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e\u0026gt;10 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eIsolation (Input Group to System)\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e707 VDC for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eChannel‑to‑Channel Isolation\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e±10 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eDiagnostics\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eOver‑range, under‑range, broken input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMeasurement Accuracy\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAccuracy at 25 °C (77 °F), Autocalibration Enabled\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRTD Inputs: ±0.2…±0.6 °C depending on RTD type\u003c\/li\u003e\n\u003cli\u003eResistance Inputs: ±0.5…±1.5 Ω depending on resistance value\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAccuracy at 0…55 °C (32…131 °F), Autocalibration Enabled\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRTD Inputs: ±0.4…±1.1 °C depending on RTD type\u003c\/li\u003e\n\u003cli\u003eResistance Inputs: ±0.25…±2.5 Ω depending on resistance value\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRepeatability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNickel \/ Nickel‑Iron RTDs: ±0.1 °C\u003c\/li\u003e\n\u003cli\u003eOther RTDs: ±0.2 °C\u003c\/li\u003e\n\u003cli\u003e150 Ω resistance: ±0.04 Ω\u003c\/li\u003e\n\u003cli\u003eOther resistances: ±0.2 Ω\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePerformance Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Update Time\u003c\/strong\u003e: 6…303 ms per enabled channel (filter‑dependent)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Mode Noise Rejection\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003e110 dB min @ 50 Hz (10 or 50 Hz filter)\u003c\/li\u003e\n\u003cli\u003e110 dB min @ 60 Hz (10 or 60 Hz filter)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNormal Mode Noise Rejection\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003e70 dB min @ 50 Hz (10 or 50 Hz filter)\u003c\/li\u003e\n\u003cli\u003e70 dB min @ 60 Hz (10 or 60 Hz filter)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCalibration Behavior\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAutocalibration occurs on channel enable and on configuration changes.\u003c\/li\u003e\n\u003cli\u003eOptional periodic calibration every five minutes.\u003c\/li\u003e\n\u003cli\u003eEnsures stable measurement drift control across temperature ranges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFunctional Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupports multiple RTD materials and resistance ranges for broad industrial temperature‑sensing applications.\u003c\/li\u003e\n\u003cli\u003eHigh input impedance prevents loading effects on low‑energy RTD circuits.\u003c\/li\u003e\n\u003cli\u003eChannel isolation prevents cross‑channel interference in multi‑sensor installations.\u003c\/li\u003e\n\u003cli\u003eConfigurable filtering allows tuning for noise‑heavy or fast‑response environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaintain shielded RTD wiring to reduce induced noise.\u003c\/li\u003e\n\u003cli\u003eAvoid routing sensor wiring near high‑current conductors.\u003c\/li\u003e\n\u003cli\u003eEnsure proper termination to avoid broken‑input diagnostics.\u003c\/li\u003e\n\u003cli\u003eConfirm MicroLogix power budget when combining multiple analog modules.\u003c\/li\u003e\n\u003cli\u003eMaintain non‑condensing humidity to protect terminal integrity.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43831429627978,"sku":"1762‑IR4","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/8569\/3770\/files\/1762-IQ32T_3_5ef4decd-6fbe-4e32-ad4d-b49cf4f4f59d.jpg?v=1747376555","url":"https:\/\/www.topbrandsplc.com\/products\/1762-ir4-allen-bradley-4-channel-rtd-resistance-input-module","provider":"Topbrands PLC Limited","version":"1.0","type":"link"}