{"product_id":"yjingrui-usb-hart-modem-usb-to-hart-interface","title":"YJINGRUI USB HART Modem USB to HART Interface","description":"\u003cp\u003e\u003cstrong\u003eThe YJINGRUI USB HART Modem is a compact USB‑to‑HART interface that lets a PC communicate, power, and configure HART field transmitters with an integrated loop resistor for plug‑and‑play diagnostics.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis device converts a standard USB‑A connection into a HART two‑wire interface, supporting popular brands such as Rosemount, ABB, Vega and other HART‑enabled instruments. It’s designed for commissioning, calibration, service and data acquisition tasks where you need a reliable PC connection to loop‑powered transmitters. The modem includes selectable modes and a built‑in 270 Ω loop resistor option so you can connect quickly without extra wiring or external resistors.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the YJINGRUI modem link my PC to HART instruments?\u003c\/h3\u003e\n\u003cp\u003eThe modem uses a USB‑A port on your computer and provides a polarity‑insensitive two‑wire HART clip connection. Install the supplied driver (or download the current version online) and run your HART software to exchange commands, read diagnostics and upload configurations. It behaves like a standard serial HART interface once the driver is installed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUSB‑A interface for simple plug‑in connectivity\u003c\/li\u003e\n  \u003cli\u003ePolarity‑insensitive two‑wire test clips for easy field hookup\u003c\/li\u003e\n  \u003cli\u003eCompatible with common HART software suites once drivers are loaded\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it power the loop and replace an external resistor?\u003c\/h3\u003e\n\u003cp\u003eYes — the unit offers selectable operating modes including a built‑in 270 Ω loop resistor option and a 24 VDC mode for powering transmitters. That built‑in resistor removes the need to add a separate resistor when performing many commissioning and calibration tasks, simplifying field setups. Selectable modes help match the modem to the instrument and software you’re using.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOption modes: 24 VDC\/270 Ω, Normal, and 270 Ω\u003c\/li\u003e\n  \u003cli\u003eBuilt‑in resistor eliminates extra hardware in many cases\u003c\/li\u003e\n  \u003cli\u003eUseful for single‑device bench tests and on‑site commissioning\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich operating systems and instruments are supported?\u003c\/h3\u003e\n\u003cp\u003eThe modem supports a wide range of Windows versions, including Windows 98\/2000\/XP\/7\/8\/10\/11, and will work with HART transmitters from manufacturers like Rosemount, ABB and Vega. Drivers are supplied on CD and can also be downloaded from the web if your computer doesn’t automatically recognize the device. Ensure your HART software is compatible to complete the communication setup.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWindows compatible: XP through Windows 11 (also legacy versions listed)\u003c\/li\u003e\n  \u003cli\u003eWorks with Rosemount, ABB, Vega and other HART devices\u003c\/li\u003e\n  \u003cli\u003eDriver available on CD or via internet download for updates\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use the modem safely and reliably in the field?\u003c\/h3\u003e\n\u003cp\u003eConnect the modem’s USB end to your PC and attach the HART clips to the two‑wire transmitter leads, checking clip polarity isn’t required. Choose the correct mode depending on whether you need loop power or only signaling, then open your HART configuration software and select the modem’s COM port. Regularly update drivers and follow your plant’s electrical safety procedures when connecting to live loops.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlug USB into PC, attach two test clips to the transmitter leads\u003c\/li\u003e\n  \u003cli\u003eSelect required mode (24 VDC\/270 Ω, Normal, or 270 Ω)\u003c\/li\u003e\n  \u003cli\u003eOpen HART software and choose the modem’s COM port\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: field technicians, instrument engineers and commissioning teams who need a portable, straightforward USB interface to HART instruments. It’s particularly useful for maintenance crews performing calibration, troubleshooting or data collection on Rosemount, ABB, Vega and other HART devices, and for engineers who want a compact tool that eliminates extra resistors during many routine tasks.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the modem provide loop power?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It offers selectable modes including 24 VDC and a built‑in 270 Ω resistor for loop powering many HART transmitters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which Windows versions does it support?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Compatible with Windows 98\/2000\/XP\/7\/8\/10\/11; drivers come on CD or can be downloaded online.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YJINGRUI","offers":[{"title":"Default Title","offer_id":48449151467677,"sku":"B01GC2AWIE","price":166.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/yjingrui-front-view-usb-hart-modem.jpg?v=1781627899","url":"https:\/\/nexoltic.com\/products\/yjingrui-usb-hart-modem-usb-to-hart-interface","provider":"Nexoltic","version":"1.0","type":"link"}