{"product_id":"allen-bradley-1771-ixhr-thermocouple-millivolt-input-module","title":"Allen Bradley 1771-IXHR Thermocouple Millivolt Input Module","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IXHR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a precision-engineered analog input interface designed for the Allen-Bradley PLC-5 platform, specifically optimized for low-level signal detection. This module excels in applications requiring extreme thermal accuracy, providing eight floating differential inputs that support a wide array of thermocouple types and millivolt signals. By leveraging automated cold-junction compensation and internal self-calibration, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IXHR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eremoves the need for manual potentiometer tuning, ensuring long-term signal stability. Its high-speed circuitry enables a 25 ms update rate across all channels, making it a staple for high-fidelity temperature monitoring and laboratory-grade industrial sensing.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInput Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8 Floating Differential Channels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSupported Sensor Types:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThermocouples (Type B, E, J, K, R, S, T) and ±100 mV Millivolt signals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurement Resolution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.1° C\/F for temperature; 1 μV for voltage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUpdate Frequency:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e25 ms for all 8 channels (simultaneous processing)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCold Junction Compensation (CJC):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eInternal; Accuracy of ±0.5°C within 0°C to 60°C range\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eData Representation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNatural Binary\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCalibration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAutomatic gain and offset (software-controlled)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Current Draw:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e750 mA @ 5V DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower \u0026amp; Thermal:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4.255 Watts max; 14.5 BTU\/hr heat dissipation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStatus Indicators:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGreen \"RUN\" LED (Active); Red \"FLT\" LED (Fault\/Diagnostic)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOnboard Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePower-up self-test and integrated open-circuit detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring Interface:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRequires 1771-WI wiring arm for field terminations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIsolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDifferential inputs provide robust noise rejection for industrial environments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSystem Integration and Reliability\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IXHR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis built to maintain high E-E-A-T standards in thermal processing. It eliminates common points of failure in analog loops by integrating the cold junction reference directly into the module's architecture. For maintenance teams, the module simplifies troubleshooting through its front-facing diagnostic LEDs and the ability to swap units without disturbing field wiring, provided a 1771-WI wiring arm is utilized. The natural binary data format allows for direct, high-resolution scaling within the PLC-5 processor's integer files, reducing the overhead for complex math instructions.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":42038601089123,"sku":"80026-172-24-R","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/235.png?v=1775022850","url":"https:\/\/precisemodule.com\/products\/allen-bradley-1771-ixhr-thermocouple-millivolt-input-module","provider":"Precise Module Ltd.","version":"1.0","type":"link"}