【正文】 led shabby, the heart is willing to go live to know the joy. Suffering and joy is their own choice. 22, learn how to use a single powerful heart, let the past be the past, 檢測(cè)技術(shù)及儀表課程設(shè)計(jì)論文 21 let the future e. Life is really the end of the end of an eagle is flying wings, life is constantly pursuit. Don39。t really dare to adhere to the principle. No rade, constantly put on reworking an emergency meeting to Comrade Zhen to speak louder, management tube too strict. Remember in Dongguan Street, 400 meters long cement concrete surface layer, because of various reasons, the smoothness of the poor in the bottom cavity, covering film traces and car imprinting quality problems, * * * inquiries, immediately rushed to the scene to understand and verify the situation, the convening of the management office, the construction units, supervision units, construction units, construction units construction time is tight, the economic loss and other reasons to intercede ******** unmoved. He said, now a popular word, to the discipline and rules quite in front, there are no rules Radius, you construction team not accordance 檢測(cè)技術(shù)及儀表課程設(shè)計(jì)論文 24 with the technical specifications, quality problems, it must be to carry out rectification. Engineering quality responsibility be weightier than Mount Tai, if we manage to this matter Pavement quality quantity are placed the matter, we this time to learn two regulations have what use? Still what is the Communist Party? Finally, in his insisted, the road after rework, to solve these problems. In the construction of the new rades and the project all the colleagues efforts, after four months of fighting, the project the main project was finally pleted and passed inspection. Thousands of miles of ice, thousands of miles Piao, this is a splendid and romantic scene. But snow for the highway, it is a disaster, a serious threat to the traffic safety. This year, a month, a century of cold wave swept from North to south, and the snow blowing to Guangdong, but also to bear the blow To * * * * the highway. In January on the evening of 23, Lianping county city temperatures dropped to minus 2 degrees, a wide range of sudden rain sleet, before and after the provincial S341 line in Jiulianshan Mountain tunnel sections of the road appeared in the snow, lead to the passing vehicles skid, traffic is blocked. In the face of the sudden natural disasters, city and county 檢測(cè)技術(shù)及儀表課程設(shè)計(jì)論文 25 highway department immediately launched the emergency plan for disaster prevention. As the front line of the main force, Lianping Highway Bureau of all Party members and cadres to remember the Party member responsibility, braving the biting cold wind, the first time rushed to the scene, on the icy pavement of salt disposal. Because the temperature is too low, just melt water immediately freezes, addition to the ice work to increase the difficulty. To ensure In addition to the re anization of the depths of the traffic safety, road people braved the icy put reflective cones and warning signs, endure cold at minus 2,3 of Jiulianshan patrols until one in the morning. Just before dawn, Lianping Highway Bureau personnel on the icy road salt ice melting processing until ten o39。 life is a simple, calm and peaceful. Always not to choose their own path and regret, life is like a train, the scenery and then the United States will retreat, the passage of time and encounter will eventually drifting further and further away, before is always himself. 25, everyone has a weakness, weakness is true humanity. That has no weakness, a shallow person. That people think there is no weakness, mostly false. Life has shortings, there are shortings is the real life. That no 檢測(cè)技術(shù)及儀表課程設(shè)計(jì)論文 22 one regret, or childish or numbness or Self deception. It is in tolerance of weakness and so on to accept, people live happily. Hello, everyone! I am a party member. The title of my speech is: study and implement the party39。 to get, must work to。t envy him A sum of, don39。 you pain, no one can understand. Then you only tears to smile. 8, each people have youth, Each youth are a story, the life of the world never gets easier, I want what, wish the world all know, as has been the same。t be narrowminded. Poke to care, is a kind of 檢測(cè)技術(shù)及儀表課程設(shè)計(jì)論文 17 openminded, a free and easy. 5, I am not afraid of others behind me a knife, I afraid to look back and see stab me, is my intention to treat people。 to implement , do not want to, dare not, not with disciplinary ruler to supervision。 差壓 由于結(jié)垢導(dǎo)致管內(nèi)流動(dòng)阻力增大，需要測(cè)量流動(dòng)壓降，范圍為 0~50mm 水柱 。由于獨(dú)特的特點(diǎn)，目前已廣泛地應(yīng)用于工業(yè)上各種導(dǎo)電液體的測(cè)量。當(dāng)被測(cè)容器中的液位升降時(shí) ，液位計(jì)主導(dǎo)管中的浮子也隨之升降，浮子內(nèi)的永久磁鋼通過(guò)磁耦合傳遞到現(xiàn)場(chǎng)指示器，驅(qū)動(dòng)紅白翻柱轉(zhuǎn) 180176。 圖 8 SARN23000M27300/15010帶溫度變送器熱電偶 工作原理及 應(yīng)用 熱電偶在工作狀態(tài)下所測(cè)得的熱電勢(shì)（電阻）的變化，經(jīng)過(guò)溫度變送器的電橋產(chǎn)生不平衡信號(hào)，經(jīng)放大后轉(zhuǎn)換成為 420mA 電信號(hào)給工作儀表，工作儀表便顯示所對(duì)應(yīng)的溫度值。 （ + ltl） 熱響應(yīng)時(shí)間 表 3 套管直徑 熱響應(yīng)時(shí)間 Ф 3 ≤ 3 檢測(cè)技術(shù)及儀表課程設(shè)計(jì)論文 6 誤差分析 主要有分度誤差、通電分度誤差、線(xiàn)路電阻不同或變化引入的誤差、附加電動(dòng)勢(shì)及傳感器熱 容量等。此處考慮到被測(cè)溫度范圍我選用了 WZPK233S|鎧裝 Pt100 熱電阻。 2 實(shí)驗(yàn)裝置簡(jiǎn)介 如圖所示的實(shí)驗(yàn)裝置是東北電力大學(xué)節(jié)能 與測(cè)控研究中心楊善讓教授為首的課題組基于測(cè)量新技術(shù) — 軟測(cè)量技術(shù)開(kāi)發(fā)的多功能實(shí)驗(yàn)裝置。熱學(xué)法中又可分為熱阻表示法和溫差表示法兩種 ； 非傳熱量的污垢監(jiān)測(cè)法又有直接稱(chēng)重法、厚度測(cè)量法、壓降測(cè)量法、放射性技術(shù)、時(shí)間推移電影法、顯微照相法、電解法和化學(xué)法。 表示換熱面上污垢沉積量的特征參數(shù)有：?jiǎn)挝幻娣e上的污垢沉積質(zhì)量 mf，污垢層平均厚度δ f和污垢熱阻 Rf。 圖 2 多功能動(dòng)態(tài)模擬實(shí)驗(yàn)裝置外形圖 本實(shí)驗(yàn)裝置的模擬換熱器是由恒溫水浴作為熱源加熱實(shí)驗(yàn)管段（約 2m），水浴溫度由溫控器、電加熱管以及保溫箱體構(gòu)成。 特點(diǎn) 1熱響應(yīng)時(shí)間少，減小動(dòng)態(tài)誤差； 2直 徑小， 易彎曲， 長(zhǎng)度不受限制 ， 適宜安裝在管道狹窄和要求快速反應(yīng)、微型化等特殊場(chǎng)合 ； 3測(cè)量精度高； 4進(jìn)口薄膜電阻元件，性能可靠穩(wěn)定； 5可對(duì) 200~600℃ 溫度范圍內(nèi)的氣體、液體介質(zhì)和固體表面進(jìn)行自動(dòng)檢測(cè)，并且可直接用銅導(dǎo)線(xiàn)和二次儀表相連接使用，由于它具有良好的電輸出特性，可為顯示儀、記錄儀、調(diào)節(jié)器、 掃描器、數(shù)據(jù)記錄儀以及電腦提供精確的輸入值； 6具有很強(qiáng)的抗污染和優(yōu)良的機(jī)械強(qiáng)度，適合安裝在環(huán)境惡劣的場(chǎng)合。 卡箍式管壁熱電偶、熱電阻是專(zhuān)為測(cè)溫管壁溫度而設(shè)計(jì)的，它采用卡箍式夾緊裝置，無(wú)需焊接，就可將溫度探頭上的加熱板與管道壓接，具有裝拆方便，反應(yīng)靈敏、抗壓耐震和測(cè)量可靠等優(yōu)點(diǎn)。 技術(shù)指標(biāo) 檢測(cè)技術(shù)及儀表課程設(shè)計(jì)論文 8 表 5 主要技術(shù)指標(biāo) 基本誤差 基本誤差 =熱電偶允差對(duì)應(yīng)輸出基本誤差 +變送器精度（ %）輸出的基本誤差 負(fù)載電阻 0500Ω 輸出信號(hào) 420mA 供電電源 變送器工作