化工專用隔爆熱電阻WRE-621 廠家
產(chǎn)品概述
化工專用隔爆熱電阻WRE-621是一款專為工業(yè)環(huán)境下溫度測量與控制設計的傳感器，適用于存在易燃易爆氣體或蒸汽的場所。該產(chǎn)品通過與顯示儀表配套使用，可精準測量氣體、液體及蒸氣的溫度，為化工、石油、冶金等行業(yè)的自動化控制提供可靠數(shù)據(jù)支持。其核心部件采用鎳鉻-銅鎳分度號材料，確保在-200℃至+600℃范圍內穩(wěn)定工作，滿足不同工況需求。產(chǎn)品設計注重安全性與耐用性，外殼采用高強度鋁合金壓鑄工藝，內部結構優(yōu)化了熱響應速度與絕緣性能，同時具備抗振、防腐蝕等特性。13
核心特點
WRE-621的突出優(yōu)勢在于其防爆設計與工藝可靠性。接線盒采用特殊密封結構，結合橡膠密封圈與精密壓鑄技術，有效防止內部火花或高溫引發(fā)外部環(huán)境爆炸。熱電阻感溫元件通過多層絕緣處理，常溫絕緣電阻值符合工業(yè)要求，即使在濕度較高的環(huán)境下也能保持穩(wěn)定輸出。產(chǎn)品支持多種安裝方式，包括固定螺紋、法蘭連接等，適配不同管道或設備接口，安裝時需注意保持接線盒出線口向下以避免污物侵入。此外，其保護管材料可根據(jù)介質特性選配，如20號鋼或耐腐蝕合金，以延長使用壽命。513
技術參數(shù)
該產(chǎn)品測溫范圍為0~500℃，熱響應時間（T0.5）通過嚴格測試取平均值，確保動態(tài)響應快速準確。公稱壓力下保護管可承受靜態(tài)外壓，實際使用中需結合溫度、插入深度及介質工況綜合評估承壓能力。通過熱電阻的測量電流不超過5mA，避免因過載影響精度。外殼防護等級滿足防塵防水需求，適合戶內外安裝。產(chǎn)品在出廠前經(jīng)過多道工序檢驗，包括階躍溫度測試與絕緣性能驗證，以保證交付質量。618
應用場景
WRE-621廣泛應用于化肥、化纖、制藥等行業(yè)的管道或反應釜溫度監(jiān)測，尤其適用于爆炸等級不高于Ⅱ類B級、引燃溫度不低于T4組別的危險區(qū)域。其設計避免了強磁場干擾，并可通過接地鋼管屏蔽信號傳輸線路，進一步降低環(huán)境干擾風險。用戶安裝時需遵循電氣安全規(guī)程，確保外接地可靠，同時定期檢查密封件與隔爆面狀態(tài)，以維持長期性能穩(wěn)定。1225
Introduction to WRE-621 Explosion-Proof Thermocouple for Chemical Industry
The WRE-621 is a specialized temperature sensor designed for hazardous environments where flammable gases or vapors may be present. It pairs with display instruments to measure and control temperatures of gases, liquids, and steam in industries such as chemical processing, petroleum, and metallurgy. Constructed with nickel-chromium/copper-nickel (Type E) sensing elements, it operates reliably within a range of -200°C to +600°C. Its robust housing, made of high-strength aluminum alloy, ensures durability while optimizing thermal response and electrical insulation. Safety features include a sealed junction box to prevent ignition risks. 24
Key Features
The WRE-621 excels in explosion-proof performance through its precision-engineered junction box with compression seals and corrosion-resistant materials. The thermocouple’s multi-layer insulation maintains stable resistance even in humid conditions. Flexible installation options (threaded or flanged connections) cater to diverse equipment setups. Users are advised to orient the cable entry downward during installation. Protective tubing materials (e.g., carbon steel or alloys) can be selected based on media compatibility for extended service life. 1622
Technical Specifications
With a measurement span of 0~500°C and tested thermal response time (T0.5), the WRE-621 delivers rapid and accurate readings. Its sheath withstands rated pressures under static conditions, though operational limits depend on temperature and insertion depth. The low signal current (<5mA) safeguards against measurement drift. The housing’s ingress protection rating suits both indoor and outdoor deployment. Rigorous factory tests, including step-temperature validation, ensure consistent performance. 2728
Applications
Ideal for pipelines or reactors in fertilizer, pharmaceutical, and chemical plants, the WRE-621 is rated for Zone 1/2 hazardous areas (Group IIB, T4). Its design minimizes electromagnetic interference, and shielded conduit installation is recommended for signal stability. Compliance with electrical safety protocols—such as proper grounding and routine seal inspections—is critical for sustained operation in explosive atmospheres. 1926
化工專用隔爆熱電阻
WRR-131，WRR2-131，WRN-230D，WRE-210D，WRN-430D，WRNK-431，WRK-240，WRK-520，WRS-132，WRT-620，WRN-130，WRN-130，WRNK-231，WREK-232，WRE-621A，WZPK-133S，WRN-631，WRE2-235T，WRER2-13，WRPB-230，WRE-621，WRN2-621，WZPM-201S，WZPK2-306SA，WZP-205S，WREK-1315，WRET-01，WZPF-130 WZCF-130 WZPF-430，WRNT-11，WZCM、WZPM，SBW系列，WRR-120，WRR-121，WRP-120，WRP-121，WRN-122，WRN-123，
裝配式不銹鋼接線盒熱電偶WRR-120B，WRR-121B，WRR2-120B，WRR2-121B，WRP-120B，WRP-121B，WRP2-120B，WRP2-121B，WRN-122B，WRN-123B，WRN2-123B，WRR-130B，WRR-131B，WRR2-130B，WRR2-131B，WRP-130B，WRP-131B，WRP2-130B，WRP2-131B，WRN-133B，WRN2-133B，WRN-130B，WRN2-130B，WRE-130B，WRE2-130B，WRN-230B，WRN2-230B，WRE-230B， 表面熱電偶溫度計WRE2-230B，WRN-220B，WRN-220AB，WRN2-220B，WRN2-220AB，WRE-220B，WRE-220AB，WRE2-220B，WRE2-220AB，WRN-230B，WRN2-230B，WRE-230B，WRE2-230B，WRN-330B,WRN2-330B，WRE-330B，WRE2-330B，WRN-430B，WRN2-430B，WRE-430B，WRE2-430B,WRN-420B，WRN-420AB，WRN2-420B，WRE-420B，WRE-420AB，WRE2-420B，WRN-430B,WRN2-430B，WRE-430B，WRE2-430B，WRN-530B，鎧裝熱電偶WRN2-530B，WRE-530B，WRE2-530B，WRN-631B，WRN2-6310B，WRE-631B，WRE2-631B，WRN-620, WRN-621B，WRN-620A, WRN-621AB，WRN2-620, WRN2-621B，WRE-621B，WRE-621AB，WRE2-621B，WRN-631B，WRN2-631B，WRE-631B，表面熱電偶WRE2-631B，WRN-624B，WRN-625B，WRE-624B，WRE-625B，WRN-420B，WRN-430B，WRN2-420B，WRN2-430B，WRE-420B，WRE-430B，WRE2-420B，WRE2-430B，WRN-420C，WRN-430C，WRN2-420C，WRN2-430C，WRE-420C，WRE-430C，WRE2-420C，WRE2-430C，WRN-420D，小接線盒鎧裝熱電偶WRN-430D，WRN2-420D，WRN2-430D，WRE-420D,WRE-430D，WRE2-420D，WRE2-430D，WZP-420B，WZP-421B，WZP -430B，WZP-431B,WZP2-420B，WZP2-421B，WZP2-430B，WZP2-431B，WZC-420B，WZC-430B，WZP -420C,WZP -421C，WZP -430C，高溫耐磨熱電偶WZP -431C，WZP2-420C，WZP2-421C，WZP2-430C，WZP2-431C,WZC-420C，WZC-430C，WZP -420D，WZP -421D，WZP -430D，WZP -431D，WZP2-420D，WZP2-421D，WZP2-430D，WZP2-431D，WZC-420D，WZC-430D，WRE-892M，WRE-891M，WRE-890M，WREK-101，WREK-121，WREK-131，WREK-181，WREK-187，WREK-191，WREK-102，WREK-122，WREK-132，鉑銠10-鉑二等標準熱電偶WREK-182，WREK-188，WREK-192，WREK2-121，WREK2-131，WREK2-122，WREK2-132，WRNK-101，WRNK-121，WRNK-131，WRNK-181，WRNK-187，WRNK-191，WRNK-102，WRNK-122，WRNK-132，WRNK-182，WRNK-188,WRNK-192，WRNK2-121，WRNK2-131，WRNK2-122，WRNK2-132，WRCK-101，WRCK-121，WRCK-131，WRCK-181，WRCK-187，吹氣型熱電偶WRCK-191，WRCK-102，WRCK-122，WRCK-132，WRCK-182，WRCK-188，WRCK-192，WRCK2-121，WRCK2-131，WRCK2-122，WRCK2-132，WREK-201，WREK-221，WREK-231，WREK-281，WREK-291，WREK-202，WREK-222,WREK-232，WREK-282，WREK-292，WREK2-221，WREK2-231，WREK2-222，WREK2-232，WRNK-201，WRNK-221，WRNK-231，WRNK-281，WRNK-291，WRNK-202，WRNK-222，WRNK-232，WRNK-282，WRNK-292，WRNK2-221，WRNK2-231，WRNK2-222，WRNK2-232，WRCK-201, WRCK-221, WRCK-231, 拱頂熱電偶WRCK-281, WRCK-291, WRCK-202, WRCK-222, WRCK-232, WRCK-282, WRCK-292. WRCK2-221, WRCK2-231, WRCK2-222, WRCK2-232WREK-301, WREK-321, WREK-331, WREK-381, WREK-387, WREK-391, WREK-302, WREK-322, WREK-332, WREK-382, WREK-388, WREK2-321, WREK2-331, WREK2-322 WREK2-332 ,WRNK-301, 超臨界電站用熱電偶 WRNK-321, WRNK-331, WRNK-391, WRNK-381, WRNK-387, WRNK-302, WRNK-322, WRNK-332, WRNK-392, WRNK-382, WRNK-388, WRNK2-321, WRNK2-331, WRNK2-322, WRNK2-332, WRCK-301, WRCK-321, WRCK-331, WRCK-391,WRCK-381, WRCK-387, WRCK-302, WRCK-322, WRCK-392, WRCK-382, WRCK-388,WRCK2-321，WRCK2-331，WRCK2-322，WRCK2-332，WREK-401，WREK-421，WREK-431，WREK-481, WREK-491, WREK-402, 電站測溫用熱電偶WREK-422, WREK-432, WREK-482, WREK-492WREK2-421, WREK2-431, WREK2-422, WREK2-432, WRNK-401, WRNK-421, WRNK-431,WRNK-481, WRNK-491, WRNK-402, WRNK-422, WRNK-432, WRNK-482, WRNK-492,WRNK2-421, WRNK2-431, WRNK2-422, WRNK2-432, WRCK-401, WRCK-421, WRCK-431,WRCK-491, WRCK-481, WRCK-402, WRCK-422, WRCK-432, WRCK-492, WRCK-482,WRCK2-421, WRCK2-431, WRCK2-422, 隔爆型、本安型熱電偶WRCK2-432, WREK-501, WREK-521, WREK-531,WREK-581, WREK-591, WREK-502, WREK-522, WREK-532, WREK-582, WREK-592. WREK2-521, WREK2-531, WREK2-522, WREK2-532, WRNK-501, WRNK-521, WRNK-531,WRNK-581，WRNK-591，WRNK-502，WRNK-522，WRNK-532，WRNK-592，WRNK-582，WRNK2-521，WRNK2-531，WRNK2-522，WRNK2-532，WRCK-501，WRCK-521，WRCK-531，WRCK-591，WRCK-581，化工專用隔爆型熱電偶WRCK-502，WRCK-522，WRCK-532，WRCK-592，WRCK-582，WRCK2-521，WRCK2-531，WRCK2-522，WRCK2-532，WREK-1313，WREK-1314，WREK-1315，WREK-1316，WREK-1323，WREK-1324，WREK-1325，WREK-1326，WRNK-1313, WRNK-1314, WRNK-1315, WRNK-1316, WRNK-1323, WRNK-1324, WRNK-1325, WRNK-1326, WRFK-281A, WRFK-181A., WRCK-281A, WRCK-181A, WREK-281A, WREK-181A, WRNK-281A, WRNK-181A, WZPM-202U, WZPM-201U, WRNM-202A, WZPM-101U, WZPM-102U, 化工專用熱電偶WREM-102A, WRNM-201A, WRNM-203A WRNN-436, WRNN2-436, WRN-420B, WRN-430B, WRN2-420B, WRN2-430B, WRE-420B, WRE-430B, WRE2-420B, WRE2-430B, WRN-420C, WRN-430C, WRN2-420C, WRN2-430C, WRE-420C, WRE-430C, WRE2-420C, WRE2-430C, WRN-420D, WRN-430D, WRN2-420D, WRN2-430D, WRE-420D, WRE-430D, WRE2-420D, 可動式熱電偶WRE2-430D, WZP-420B, WZP-421B, WZP-430B, WZP-431B, WZP2-420B, WZP2-421B, WZP2-430B, WZP2-431B, WZC-420B, WZC-430B, WZP-420C, WZP-421C, WZP-430C, WZP-431C, WZP2-420C, WZP2-421C, WZP2-430C, WZP2-431C, WZC-420C, WZC-430C, WZP-420D, WZP-421D, WZP-430D, WZP-431D, WZP2-420D, WZP2-421D, WZP2-430D, WZP2-431D, WZC-420D, WZC-430D.WRR-433Q, WRNR-93UC, WRER-93UC, WRNR2-93UC, WRER2-93UC, WRNT-001, WRNT2-001, 耐腐、耐磨熱電偶WRET-001, WRET2-001, WRNR-01, WRER-01, WRNR2-01, WRER2-01, WRNR-12, WRER-12, WRNR2-12, WRER2-12, WRNR-13, WRER-13, WRNR2-13. WRER2-13. WRNR-14, WRER-14, WRNR2-14, WRER2-14, WRNR-15, WRER-15, WRNR2-15, WRER2-15, WRN-15A, WRER-15A, WRNR2-15A, WRER2-15A, WRNT-31, WRET-31, WRNT2-31, WRET2-31, 套管式熱電偶WRNK-841n﹡D, WRNK-842n﹡D, WREK-841n﹡D. WREK-842n﹡D, WRNK-841n﹡I, WRNK-842n﹡I, WREK-841n﹡I. WREK-842n﹡I, WREK-842n﹡I, WRN-240A, WRN2-240A, WRE-240A, WRE2-240A, WRN-640A,WRN2-640A,WRE-640A,WRE2-640A, WRN-440A,WRN2-440A, WRE-440A,WRE2-440A, WRNK-240, WRNK2-240, WREK-240, WREK2-240, WRNK-440, WRNK2-440, WREK-440, WREK2-440, WRN-74O,WRN2-74O, WRN-74O, WRN2-74O, WRNR-15, WRNR2-15, WRNR-15A, WRNR2-15A, WRER-15, WRER2-15, WRER-15A, WRER215A, WRN-624, WRN-625, WRE-624, WRE-625, WRNR-12, WRER-12, WRNR2-12, WRER2-12, WRNR-13, WRNR2-13, WRER-13, WRER2-13,WRNR-14, WRNR2-14, WRER14, WRER2-14, WRN-631, WRN2-631, WRNR-01, WRER-01, WRNR2-01, WRER2-01, WRN-130, WRN2-130, WRN-230, WRN2-230, WRN-330, WRN2-330, WRN2-430, WRN-430, WRE-130, WRE2-130,
第：北京、天津、沈陽、大連、哈爾濱、濟南、青島、南京、上海、杭州、武漢、廣州、深圳、香港、澳門、重慶、成都、西安（18個）
第二級：石家莊、長春、呼和浩特、太原、鄭州、合肥、無錫、蘇州、寧波、福州、廈門、南昌、長沙、汕頭、珠海、�？�、三亞、南寧、貴陽、昆明、拉薩、蘭州、西寧、銀川、烏魯木齊（25個）
第三級：唐山、秦皇島、淄博、煙臺、威海、徐州、連云港、南通、鎮(zhèn)江、常州、嘉興、金華、紹興、臺州、溫州、泉州、東莞、惠州、佛山、中山、江門、湛江、北海、桂林（24個）
第四級:邯鄲、鞍山、撫順、吉林市、齊齊哈爾、大慶、包頭、大同、洛陽、濰坊、蕪湖、揚州、湖州、舟山、漳州、株洲、潮州、柳州（18個）
第五級：承德、保定、丹東、開封、安陽、泰安、日照、蚌埠、黃山、泰州、莆田、南平、九江、宜昌、襄樊、岳陽、肇慶、樂山、綿陽、麗江、延安、咸陽、寶雞（23個）
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