{"id":255,"date":"2026-06-25T15:58:28","date_gmt":"2026-06-25T07:58:28","guid":{"rendered":"https:\/\/www.bihec.com\/ljengineeringinc2\/?p=255"},"modified":"2026-06-25T15:58:28","modified_gmt":"2026-06-25T07:58:28","slug":"l-j-engineering-329%e5%9e%8b%e7%9c%9f%e7%a9%ba%e8%b0%83%e8%8a%82%e5%99%a8-329h-500%e9%ab%98%e7%9c%9f%e7%a9%ba%e5%9e%8b%e8%b0%83%e8%8a%82%e9%98%80","status":"publish","type":"post","link":"https:\/\/www.bihec.com\/ljengineeringinc2\/l-j-engineering-329%e5%9e%8b%e7%9c%9f%e7%a9%ba%e8%b0%83%e8%8a%82%e5%99%a8-329h-500%e9%ab%98%e7%9c%9f%e7%a9%ba%e5%9e%8b%e8%b0%83%e8%8a%82%e9%98%80\/","title":{"rendered":"L.J. Engineering 329\u578b\u771f\u7a7a\u8c03\u8282\u5668 329H-500\u9ad8\u771f\u7a7a\u578b\u8c03\u8282\u9600"},"content":{"rendered":"

L.J. Engineering 329\u578b\u771f\u7a7a\u8c03\u8282\u5668 329H-500\u9ad8\u771f\u7a7a\u578b\u8c03\u8282\u9600<\/a><\/strong><\/p>\n

\"\"<\/p>\n

329 \u578b\u771f\u7a7a\u8c03\u8282\u5668<\/a><\/p>\n

L.J. Engineering, Inc<\/a>.\u7684 329 \u578b\u771f\u7a7a\u8c03\u8282\u5668<\/a>\u80fd\u591f\u5c06\u771f\u7a7a\u5ea6\u7ef4\u6301\u5728\u00b10.01 \u82f1\u5bf8\u6c5e\u67f1<\/a>\u7684\u7cbe\u786e\u8303\u56f4\u5185\u3002\u8be5\u4ea7\u54c1\u7684\u94dd\u5236\u5916\u58f3\u3001\u9ec4\u94dc\u90e8\u4ef6\u3001\u4e0d\u9508\u94a2\u90e8\u4ef6\u4ee5\u53ca\u7845\u6a61\u80f6\u90e8\u4ef6\u90fd\u7ecf\u8fc7\u7cbe\u5bc6\u52a0\u5de5\uff0c\u56e0\u6b64\u80fd\u591f\u63d0\u4f9b\u9ad8\u54c1\u8d28\u3001\u9ad8\u7cbe\u5ea6\u7684\u771f\u7a7a\u8c03\u8282\u529f\u80fd<\/a>\u3002\u6b63\u56e0\u5982\u6b64\uff0c\u8be5\u4ea7\u54c1\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u771f\u7a7a\u63a7\u5236<\/a>\u573a\u5408\u3002\u5176\u5e94\u7528\u8303\u56f4\u5305\u62ec\u7cbe\u5bc6\u771f\u7a7a\u5939\u6301<\/a>\u3001\u5bf9\u7cbe\u5bc6\u6750\u6599\u7684\u8f7b\u67d4\u642c\u8fd0<\/a>\u3001\u4f4e\u7edd\u5bf9\u538b\u529b\u6d4b\u8bd5\u4e0e\u6821\u51c6<\/a>\u3001\u6db2\u4f53\u7684\u771f\u7a7a\u8131\u6c14\u5904\u7406<\/a>\u3001\u901a\u8fc7\u4f4e\u7edd\u5bf9\u538b\u529b\u63a7\u5236<\/a>\u6765\u5b9e\u73b0\u4f4e\u6e29\u73af\u5883\u8c03\u8282\u3001\u9ad8\u6d77\u62d4\u6a21\u62df\u8bd5\u9a8c<\/a>\u3001\u771f\u7a7a\u6cc4\u6f0f\u68c0\u6d4b<\/a>\u3001\u771f\u7a7a\u888b\u63a7\u5236<\/a>\u7b49\u3002\u603b\u4e4b\uff0c\u8be5\u4ea7\u54c1\u9002\u7528\u4e8e\u5404\u79cd\u9700\u8981\u63a7\u5236\u4f4e\u4e8e\u6807\u51c6\u5927\u6c14\u538b\u7684\u573a\u5408\u3002<\/p>\n

\"\"<\/p>\n

\u6240\u6709\u7684 329 \u578b\u771f\u7a7a<\/a>\u8c03\u8282\u5668<\/a>\u90fd\u662f\u901a\u8fc7\u8c03\u8282\u6d41\u5411\u88ab\u8c03\u8282\u7aef\u7684\u6d41\u91cf\u6765\u63a7\u5236\u771f\u7a7a\u5ea6<\/a>\u7684\uff0c\u4ece\u800c\u786e\u4fdd\u8c03\u8282\u5668\u4e0b\u6e38\u7684\u771f\u7a7a\u5ea6\u80fd\u591f\u4fdd\u6301\u5728\u8bbe\u5b9a\u503c\u3002\u8be5\u4ea7\u54c1\u7684\u6d41\u91cf\u53ef\u9ad8\u8fbe 44 SCFM<\/a>\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u591a\u4e2a\u8c03\u8282\u5668\u5c31\u53ef\u4ee5\u8fde\u63a5\u5728\u540c\u4e00\u4e2a\u771f\u7a7a\u4f9b\u5e94\u7cfb\u7edf\u4e2d\uff0c\u540c\u65f6\u5404\u81ea\u5904\u4e8e\u4e0d\u540c\u7684\u771f\u7a7a\u8bbe\u5b9a\u503c\u4e0b\u5de5\u4f5c\u3002\u6807\u51c6\u7684 329 \u578b\u8c03\u8282\u5668<\/a>\u4ee5\u7edd\u5bf9\u538b\u529b<\/a>\u4f5c\u4e3a\u53c2\u8003\u6807\u51c6\uff0c\u8fd9\u4e00\u7279\u6027\u5728\u9700\u8981\u6839\u636e\u7edd\u5bf9\u538b\u529b\u6765\u63a7\u5236\u771f\u7a7a\u5ea6<\/a>\u7684\u5404\u79cd\u5e94\u7528\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u6bd4\u5982\u6821\u51c6\u3001\u84b8\u998f\u3001\u9ad8\u6d77\u62d4\u73af\u5883\u4e0b\u7684\u63a7\u5236\u7b49\u3002\u6b64\u5916\uff0c\u8fd8\u6709\u4ee5\u5927\u6c14\u538b\u529b\u4e3a\u53c2\u8003\u6807\u51c6\u7684\u578b\u53f7\u3002\u8fd9\u7c7b\u8c03\u8282\u5668\u9002\u7528\u4e8e\u90a3\u4e9b\u9700\u8981\u6839\u636e\u5927\u6c14\u538b\u529b\u6765\u63a7\u5236\u771f\u7a7a\u5ea6\u7684\u5e94\u7528\u573a\u666f\uff0c\u6bd4\u5982\u771f\u7a7a\u5939\u6301\u3001\u5305\u88c5\u3001\u58a8\u6c34\u6db2\u9762\u63a7\u5236<\/a>\u7b49\u3002<\/p>\n

329 \u7cfb\u5217\u771f\u7a7a\u8c03\u8282\u5668\u7684\u771f\u7a7a\u5ea6\u8bbe\u7f6e\u975e\u5e38\u5bb9\u6613\u8c03\u8282\uff1a\u53ea\u9700\u8f6c\u52a8\u63a7\u5236\u65cb\u94ae\u5373\u53ef\u3002\u8be5\u65cb\u94ae\u7684\u603b\u65cb\u8f6c\u8303\u56f4\u4e3a 13 \u5708\uff0c\u56e0\u6b64\u80fd\u591f\u5b9e\u73b0\u975e\u5e38\u7cbe\u786e\u7684\u8c03\u8282\u3002\u5982\u4e0b\u8868\u6240\u793a\uff0c\u8be5\u8c03\u8282\u5668\u53ef\u4ee5\u5728\u5de5\u4f5c\u771f\u7a7a\u8303\u56f4\u7684\u4efb\u610f\u4e00\u7aef\u8fdb\u884c\u6700\u4f73\u8c03\u8282\u2014\u2014\u65e0\u8bba\u662f\u4f4e\u771f\u7a7a\u5ea6\u8fd8\u662f\u9ad8\u771f\u7a7a<\/a>\u5ea6\u73af\u5883\u3002\u6b64\u5916\uff0c\u8fd9\u79cd\u4f18\u5316\u63aa\u65bd\u8fd8\u80fd\u63d0\u5347\u5728\u76f8\u5e94\u771f\u7a7a\u5ea6\u8303\u56f4\u5185\u8c03\u8282\u771f\u7a7a\u5ea6\u65f6\u7684\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n\n\n\n\n\n
Standard\u00a0\u00a0<\/span>\u6807\u51c6\/\u89c4\u8303<\/span><\/span><\/span><\/span><\/td>\n <\/p>\n

1.30<\/span><\/td>\n

 <\/p>\n

0.25<\/span><\/td>\n

\n

329<\/span><\/p>\n

329-500<\/a><\/span><\/p>\n<\/td>\n<\/tr>\n

Low Differential Vacuums\u00a0\u00a0<\/span>\u4f4e\u5dee\u5206\u771f\u7a7a\u5ea6<\/span><\/span><\/span><\/span><\/td>\n <\/p>\n

0.40<\/span><\/td>\n

 <\/p>\n

1.50<\/span><\/td>\n

\n

329L<\/span><\/p>\n

329L-500<\/a><\/span><\/p>\n<\/td>\n<\/tr>\n

Higher Vacuums\u00a0\u00a0<\/span>\u66f4\u9ad8\u7684\u771f\u7a7a\u5ea6<\/span><\/span><\/span><\/span><\/td>\n <\/p>\n

1.80<\/span><\/td>\n

 <\/p>\n

0.20<\/span><\/td>\n

\n

329H<\/span><\/p>\n

329H-500<\/a><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u9664\u4e86\u4e0a\u8ff0\u4e09\u79cd\u578b\u53f7\uff08\u6807\u51c6\u578b\u3001\u4f4e\u5dee\u538b\u771f\u7a7a\u578b\u4ee5\u53ca\u9ad8\u771f\u7a7a\u578b<\/a>\uff09\u4e4b\u5916\uff0c\u8fd8\u6709\u5177\u5907\u81ea\u52a8\u6cc4\u538b\u529f\u80fd\u7684 329 \u578b\u771f\u7a7a\u8c03\u8282\u5668<\/a>\u53ef\u4f9b\u9009\u62e9\u3002\u6ca1\u6709\u81ea\u52a8\u6cc4\u538b\u529f\u80fd\u7684\u8c03\u8282\u5668\u5728\u8f6c\u52a8\u63a7\u5236\u65cb\u94ae\u65f6\u65e0\u6cd5\u964d\u4f4e\u5dee\u538b\u771f\u7a7a<\/a>\u5ea6\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5fc5\u987b\u5c06\u7a7a\u6c14\u6392\u51fa\u7cfb\u7edf\uff0c\u6216\u8005\u8ba9\u7cfb\u7edf\u51fa\u73b0\u4e00\u5b9a\u7684\u6cc4\u6f0f\uff0c\u624d\u80fd\u964d\u4f4e\u5dee\u538b\u771f\u7a7a\u5ea6\u3002\u800c\u5177\u5907\u81ea\u52a8\u6cc4\u538b\u529f\u80fd\u7684\u8c03\u8282\u5668\u5219\u80fd\u5728\u771f\u7a7a\u5ea6\u4e0a\u5347\u6216\u4e0b\u964d\u7684\u60c5\u51b5\u4e0b\u81ea\u52a8\u8fdb\u884c\u8c03\u6574\u3002\u5176\u64cd\u4f5c\u65b9\u5f0f\u548c\u5c3a\u5bf8\u53c2\u6570\u4e0e 329 \u578b\u6216 329-500 \u578b\u7684\u89c4\u683c\u76f8\u540c\u3002<\/p>\n

\u5982\u679c\u8c03\u8282\u5668\u9700\u8981\u5728\u591a\u5c18\u7684\u73af\u5883\u4e2d\u4f7f\u7528\uff0c\u6216\u8005\u9700\u8981\u6301\u7eed\u4e0d\u65ad\u5730\u8fd0\u884c\uff0c\u90a3\u4e48\u5efa\u8bae\u4f7f\u7528\u8fdc\u7a0b\u8fc7\u6ee4\u5668<\/a>\u3002329-500 \u578b\u771f\u7a7a\u8c03\u8282\u5668\u672c\u8eab\u5c31\u914d\u5907\u4e86\u8fdc\u7a0b\u8fc7\u6ee4\u5668\u3002\u8be5\u8c03\u8282\u5668\u9002\u7528\u4e8e\u5468\u56f4\u7a7a\u6c14\u4e2d\u5b58\u5728\u7ec6\u5c0f\u9897\u7c92\u7269\u7684\u73af\u5883\u3002\u8fdc\u7a0b\u8fc7\u6ee4\u5668\u901a\u8fc7\u4e00\u6839\u77ed\u8f6f\u7ba1\u548c\u5feb\u901f\u8fde\u63a5\u88c5\u7f6e\u4e0e 329-500 \u578b\u8c03\u8282\u5668\u76f8\u8fde\u3002\u8be5\u8fc7\u6ee4\u5668\u53ef\u4ee5\u8f7b\u677e\u62c6\u5378\u4e0b\u6765\u8fdb\u884c\u6e05\u6d17\u548c\u91cd\u590d\u4f7f\u7528\u3002<\/p>\n

\u5168\u6d41\u91cf\u72b6\u6001\u4e0b\u7684\u6d41\u9053\u60c5\u51b5\uff1a<\/span><\/span><\/span><\/span><\/strong><\/p>\n

0.480 inch diameter\u00a0\u00a0\u00a0<\/span>\u76f4\u5f84\u4e3a 0.480 \u82f1\u5bf8<\/span><\/span><\/span><\/span><\/p>\n

Cv = 3.4\u00a0 and 12.2 for SHF
\nSHF \u60c5\u51b5\u4e0b\uff0cCv \u7684\u503c\u4e3a 3.4 \u548c 12.2\u3002<\/span><\/span><\/span><\/span><\/p>\n

Adjustability Range:\u00a0\u00a0\u00a0<\/span>\u53ef\u8c03\u8303\u56f4\uff1a<\/span><\/span><\/span><\/span><\/strong><\/p>\n

From 0.3 inch Hg below atmospheric pressure to near 0 pressure absolute (see Available Models explanation below)
\n\u4ece\u4f4e\u4e8e\u5927\u6c14\u538b 0.3 \u82f1\u5bf8\u6c5e\u67f1\u7684\u538b\u529b\uff0c\u4e00\u76f4\u5230\u63a5\u8fd1\u7edd\u5bf9\u96f6\u538b\u7684\u72b6\u6001\uff08\u8be6\u89c1\u4e0b\u65b9\u7684\u201c\u53ef\u7528\u6a21\u578b\u8bf4\u660e\u201d\uff09\u3002<\/span><\/span><\/span><\/span><\/p>\n

Hysteresis:\u00a0\u00a0<\/span>\u6ede\u540e\u73b0\u8c61\uff1a<\/span><\/span><\/span><\/span><\/strong><\/p>\n

Approximately .004 inch Hg (0.1 mm Hg)
\n\u5927\u7ea6 0.004 \u82f1\u5bf8\u6c5e\u67f1\uff080.1 \u6beb\u7c73\u6c5e\u67f1<\/a>\uff09<\/span><\/span><\/span><\/span><\/p>\n

Flow Sensitivity:\u00a0\u00a0\u00a0<\/span>\u6d41\u91cf\u7075\u654f\u5ea6\uff1a<\/span><\/span><\/span><\/span><\/strong><\/p>\n

Flow variation from 0 to 350 liters per minute results in set point shift of less than 0.1 inch Hg.
\n\u6d41\u91cf\u5728 0 \u5230 350 \u5347\/\u5206\u949f\u4e4b\u95f4\u7684\u53d8\u5316\uff0c\u6240\u5bfc\u81f4\u7684\u8bbe\u5b9a\u70b9\u504f\u5dee\u5c0f\u4e8e 0.1 \u82f1\u5bf8\u6c5e\u67f1\u3002<\/span><\/span><\/span><\/span><\/p>\n

Weight:\u00a0\u00a0\u00a0<\/span>\u91cd\u91cf\uff1a<\/span><\/span><\/span><\/span><\/strong><\/p>\n

3.6 pounds\u00a0\u00a0\u00a0<\/span>3.6 \u78c5<\/span><\/span><\/span><\/span><\/p>\n

Flow Ports:\u00a0\u00a0<\/span>\u6d41\u91cf\u7aef\u53e3\uff1a<\/span><\/span><\/span><\/span><\/strong><\/p>\n

1\/2-inch NPT (female)\u00a0 and 1-inch NPT (female)\u00a0for SHF<\/span><\/p>\n

329 \u578b\u771f\u7a7a\u8c03\u8282\u5668<\/a>\n329-500<\/a>\n329H-500<\/a>\n329L-500<\/a>\nInc<\/a>\nL. J. Engineering<\/a>\nL.J. Engineering 329\u578b\u771f\u7a7a\u8c03\u8282\u5668 329H-500\u9ad8\u771f\u7a7a\u578b\u8c03\u8282\u9600<\/a>\n\u4f4e\u7edd\u5bf9\u538b\u529b\u6d4b\u8bd5\u4e0e\u6821\u51c6<\/a>\n\u5bf9\u7cbe\u5bc6\u6750\u6599\u7684\u8f7b\u67d4\u642c\u8fd0<\/a>\n\u6db2\u4f53\u7684\u771f\u7a7a\u8131\u6c14\u5904\u7406<\/a>\n\u771f\u7a7a\u5ea6\u7ef4\u6301\u5728\u00b10.01 \u82f1\u5bf8\u6c5e\u67f1<\/a>\n\u771f\u7a7a\u63a7\u5236<\/a>\n\u771f\u7a7a\u6cc4\u6f0f\u68c0\u6d4b<\/a>\n\u771f\u7a7a\u888b\u63a7\u5236<\/a>\n\u7cbe\u5bc6\u771f\u7a7a\u5939\u6301<\/a>\n\u8c03\u8282\u6d41\u5411\u88ab\u8c03\u8282\u7aef\u7684\u6d41\u91cf\u6765\u63a7\u5236\u771f\u7a7a\u5ea6<\/a>\n\u901a\u8fc7\u4f4e\u7edd\u5bf9\u538b\u529b\u63a7\u5236<\/a>\n\u9ad8\u6d77\u62d4\u6a21\u62df\u8bd5\u9a8c<\/a>\n\u9ad8\u7cbe\u5ea6\u7684\u771f\u7a7a\u8c03\u8282\u529f\u80fd<\/a><\/div>","protected":false},"excerpt":{"rendered":"

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