{"product_id":"siemens-sitrans-th420-7ng041-temperature-transmitter","title":"Siemens SITRANS TH420 7NG041 Temperature Transmitter","description":"\u003cp\u003eThe \u003cstrong\u003eSiemens SITRANS TH420 universal temperature transmitter\u003c\/strong\u003e is a compact and flexible head‑mount device designed for accurate temperature conversion and reliable process monitoring. It offers universal input support for resistance thermometers (RTDs), thermocouples and other signal types, along with robust diagnostic functions.\u003c\/p\u003e\n\u003cp\u003eBecause the TH420 includes dual inputs with hot‑backup and drift detection, measurement continuity is maintained even if one sensor fails. In addition, the transmitter supports \u003cstrong\u003eHART® communication\u003c\/strong\u003e and \u003cstrong\u003eProfibus PA\u003c\/strong\u003e interfaces for seamless process integration.\u003c\/p\u003e\n\u003cp\u003eTypical applications include general industrial temperature measurement where flexibility and high availability are required.\u003c\/p\u003e\n\u003cp\u003eNot Recommended For:\u003cbr\u003e• Systems requiring only simple local temperature indication without signal output\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cache.industry.siemens.com\/dl\/files\/161\/109765161\/att_1322130\/v1\/sitranst_th320_th420_fi01_en.pdf\"\u003e\u003cstrong\u003eCatalog sheet SITRANS TH320\/420\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eSelection Notes\u003c\/h2\u003e\n\u003cp\u003e• Confirm the \u003cstrong\u003etemperature sensor type\u003c\/strong\u003e you plan to use, such as Pt100 RTD or thermocouple. \u003cbr\u003e• Verify the required \u003cstrong\u003enumber of sensor inputs\u003c\/strong\u003e and whether redundant dual‑sensor operation is needed. \u003cbr\u003e• Select the appropriate \u003cstrong\u003ecommunication protocol\u003c\/strong\u003e, such as HART, Profibus PA or other digital interfaces. \u003cbr\u003e• Determine the suitable \u003cstrong\u003emounting configuration\u003c\/strong\u003e, including head, compact or remote mounting styles. \u003cbr\u003e• In addition, ensure that \u003cstrong\u003ehazardous area approvals\u003c\/strong\u003e meet your process environment requirements.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose the Siemens SITRANS TH420\u003c\/h2\u003e\n\u003cp\u003e• \u003cstrong\u003eUniversal Input Support\u003c\/strong\u003e\u003cbr\u003eThe TH420 accepts a wide range of sensors, including resistance thermometers, thermocouples and DC voltage sources. This flexibility simplifies inventory and standardizes installations.\u003c\/p\u003e\n\u003cp\u003e• \u003cstrong\u003eDual Sensor Inputs with Hot‑Backup\u003c\/strong\u003e\u003cbr\u003eDual independent inputs allow redundant measurement. Therefore, if one sensor fails, the transmitter switches seamlessly to the second sensor without data loss.\u003c\/p\u003e\n\u003cp\u003e• \u003cstrong\u003eAdvanced Diagnostics and Drift Detection\u003c\/strong\u003e\u003cbr\u003eBuilt‑in diagnostics detect wire breaks, short circuits and sensor drift. As a result, maintenance planning becomes easier and plant uptime improves.\u003c\/p\u003e\n\u003cp\u003e• \u003cstrong\u003eDigital Communication and Configuration\u003c\/strong\u003e\u003cbr\u003eThe TH420 supports \u003cstrong\u003eHART® communication\u003c\/strong\u003e and \u003cstrong\u003eProfibus PA\u003c\/strong\u003e with universal input configuration. In addition, it can be commissioned using handheld communicators or Siemens configuration software.\u003c\/p\u003e\n\u003cp\u003e• \u003cstrong\u003eRobust and Compact Design\u003c\/strong\u003e\u003cbr\u003eCompact hardware fits DIN‑standard connection heads and allows flexible mounting. Because of this, installation is simple even in tight spaces.\u003c\/p\u003e\n\u003cp\u003e• \u003cstrong\u003eFunctional Safety and Global Approvals\u003c\/strong\u003e\u003cbr\u003eThe transmitter is certified for operation in hazardous areas according to international standards like ATEX and FM. Consequently, it suits demanding industrial environments.\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What types of temperature sensors can the SITRANS TH420 work with?\u003c\/strong\u003e\u003cbr\u003eA: The TH420 supports universal inputs for \u003cstrong\u003eRTDs, thermocouples, resistance and DC voltage signal sources\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the TH420 support digital communication?\u003c\/strong\u003e\u003cbr\u003eA: Yes. It supports \u003cstrong\u003eHART® and Profibus PA\u003c\/strong\u003e, enabling easy integration with industrial automation systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the advantage of dual sensor inputs?\u003c\/strong\u003e\u003cbr\u003eA: Dual inputs provide \u003cstrong\u003eredundant measurement with hot‑backup\u003c\/strong\u003e, maintaining continuous data even if a sensor fails.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Where is the TH420 commonly used?\u003c\/strong\u003e\u003cbr\u003eA: The transmitter is widely used in process industries, factory automation and other applications requiring accurate temperature measurement with high availability.\u003c\/p\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":43420977692733,"sku":null,"price":230.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/4141\/3693\/files\/sitrans-th420-7ng041-temperature-transmitter.webp?v=1785738258","url":"https:\/\/proinstru.com\/products\/siemens-sitrans-th420-7ng041-temperature-transmitter","provider":"Process Instrument","version":"1.0","type":"link"}