{"product_id":"kl3022-beckhoff-bus-terminal-2-channel-analog-input-4-20-ma-12-bit-differential","title":"KL3022 | Beckhoff Bus Terminal 2-Channel Analog Input 4–20 mA 12-Bit Differential","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"434\" data-start=\"91\"\u003eThe Beckhoff KL3022 is a 2-channel analog input Bus Terminal designed for differential current measurement in the 4–20 mA range. With 12-bit resolution, 500 V electrical isolation, and open lead detection, it provides accurate, reliable signal acquisition for industrial automation and process control applications.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 99.964%; height: 784px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eBeckhoff\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eIndustrial Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eKL3022\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eBus Terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003e2-channel analog input (current, differential)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eSignal Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003e4…20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003e12 bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eConversion Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003e~2 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eMeasurement Error\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003e\u0026lt; ±0.3% (relative to full scale value)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eInternal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003e80 Ω + diode voltage (0.7 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eCommon Mode Voltage (UCM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003eMax. 35 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eSurge Voltage Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003e35 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eElectrical Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003e500 V (K-bus\/signal voltage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eDifferential input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eVia K-bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.8px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 58.8px;\"\u003e\u003cstrong\u003eCurrent Consumption (K-bus)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 58.8px;\"\u003eTyp. 60 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eBit Width in Process Image\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003eInput: 2 × 16-bit data (2 × 8-bit control\/status optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eLED Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eRun and error LEDs for data and fault status\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eProtection Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003e-25°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 39.2px;\"\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 39.2px;\"\u003e95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 21.8422%; height: 19.6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78.0247%; height: 19.6px;\"\u003eApprox. 70 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eKL3022\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe Beckhoff KL3022 Bus Terminal is part of the KL3xxx series designed for reliable analog signal acquisition within automation systems. This terminal measures two differential 4–20 mA current signals with 12-bit resolution, ensuring high precision in industrial and process monitoring. It isolates the measurement signals from the control level with 500 V electrical separation, protecting connected systems from interference and voltage surges. The KL3022 supports real-time detection of open leads and overload conditions, which are reported back to the controller through the K-bus communication channel. Built-in diagnostic LEDs simplify monitoring of data transmission and fault states. With robust surge resistance and differential measurement technology, the KL3022 is particularly well-suited for connecting transmitters, sensors, and other process devices in distributed automation architectures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDual Differential Inputs: Two electrically isolated current input channels for accurate measurement of 4–20 mA signals.\u003c\/li\u003e\n\u003cli\u003eHigh Measurement Accuracy: 12-bit resolution and ±0.3% error tolerance deliver stable and precise current readings.\u003c\/li\u003e\n\u003cli\u003eElectrical Isolation: 500 V separation between the K-bus and signal voltage ensures system safety and reduces interference.\u003c\/li\u003e\n\u003cli\u003eBuilt-in Diagnostics: LED indicators signal communication activity, overload conditions, and open-circuit faults.\u003c\/li\u003e\n\u003cli\u003eDifferential Signal Measurement: Common internal ground and differential input design minimize noise and ground loop issues.\u003c\/li\u003e\n\u003cli\u003eRugged Industrial Design: Operates across a wide temperature range (-25°C to +60°C) and high humidity for demanding environments.\u003c\/li\u003e\n\u003cli\u003eSurge Voltage Protection: Withstands up to 35 V DC surge to ensure long-term operational reliability.\u003c\/li\u003e\n\u003cli\u003eFast Signal Conversion: 2 ms conversion time allows responsive current signal acquisition for dynamic processes.\u003c\/li\u003e\n\u003cli\u003eCompact Modular Integration: Fits seamlessly into Beckhoff’s Bus Terminal system for scalable automation setups.\u003c\/li\u003e\n\u003cli\u003eReliable Communication: Data is transmitted via the K-bus process image, ensuring consistent and synchronized performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe KL3022 delivers the reliability and precision required for analog current measurement, monitoring, and control in industrial automation and process systems.\u003c\/p\u003e","brand":"Beckhoff","offers":[{"title":"Default Title","offer_id":49105081303296,"sku":"KL3022","price":308.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/kl3022_ks3022__web_preview.png?v=1785539678","url":"https:\/\/alotechparts.com\/products\/kl3022-beckhoff-bus-terminal-2-channel-analog-input-4-20-ma-12-bit-differential","provider":"Alo Tech Solutions","version":"1.0","type":"link"}