壓(ya)力(li)(li)表是常(chang)見的(de)計量(liang)器(qi)具(ju)，廣泛(fan)應(ying)用于各個(ge)(ge)領域，它(ta)能(neng)(neng)直觀(guan)地顯示出各個(ge)(ge)工(gong)序環(huan)節的(de)壓(ya)力(li)(li)變(bian)化，洞(dong)察產品或(huo)介質流(liu)程(cheng)中(zhong)(zhong)的(de)條件(jian)形(xing)式(shi)，監(jian)視生產運行(xing)過程(cheng)中(zhong)(zhong)的(de)安全動向，并通過自動連(lian)鎖或(huo)傳感裝置，構筑了一道迅速可靠的(de)安全保障(zhang)，為防范事故，保障(zhang)人身和(he)(he)財產安全發揮了重要作(zuo)用，被稱作(zuo)安全的(de)“眼睛”。 在(zai)生產壓(ya)力(li)(li)表的(de)過程(cheng)中(zhong)(zhong)，對彈(dan)(dan)簧管的(de)要求也非常(chang)嚴格，必須應(ying)具(ju)有足夠的(de)管端(duan)位(wei)移量(liang)，管端(duan)力(li)(li)和(he)(he)較(jiao)小的(de)內應(ying)力(li)(li)。具(ju)體(ti)來說，對于低壓(ya)彈(dan)(dan)性管，要求其(qi)較(jiao)高(gao)的(de)靈敏度（較(jiao)大(da)的(de)位(wei)移量(liang)）和(he)(he)較(jiao)大(da)的(de)管端(duan)力(li)(li)（能(neng)(neng)夠帶(dai)動機芯及(ji)指針的(de)運動）；對于中(zhong)(zhong)高(gao)壓(ya)彈(dan)(dan)簧管則(ze)要求較(jiao)小的(de)內應(ying)力(li)(li)，以確保彈(dan)(dan)簧管在(zai)使用中(zhong)(zhong)的(de)穩(wen)定(ding)性和(he)(he)安全性。

一(yi)般情(qing)況下(xia)對彈簧(huang)管的材料要(yao)求有(you)以下(xia)幾點(dian)：

（1）具有良好(hao)的塑性，便于加工成形；

（2）較高(gao)的彈(dan)性極(ji)限(xian)，強(qiang)度極(ji)限(xian)和疲勞極(ji)限(xian)，以保證(zheng)儀(yi)表正常工作；

（3）良(liang)好的(de)焊(han)接(jie)性能(neng)，便于釬焊(han)和熔焊(han)；

（4）機械性(xing)能穩定，彈性(xing)模量(liang)的溫度(du)系數(shu)小；

（5）較好(hao)(hao)的(de)(de)(de)(de)(de)(de)(de)耐腐蝕性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)。制(zhi)作彈簧管(guan)常用(yong)(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)材(cai)料有黃(huang)(huang)銅(tong)（H62），錫磷(lin)(lin)青(qing)(qing)銅(tong)(QSn4---0.3)，鈹(pi)青(qing)(qing)銅(tong)（Qbe2）和(he)(he)(he)(he)(he)不(bu)銹鋼（1Gr18Niqi,sus316,sus316L）等，這幾種材(cai)料各有各自的(de)(de)(de)(de)(de)(de)(de)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)和(he)(he)(he)(he)(he)用(yong)(yong)(yong)(yong)(yong)途(tu)(tu)，分(fen)別(bie)是：黃(huang)(huang)銅(tong)的(de)(de)(de)(de)(de)(de)(de)主(zhu)要(yao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)是具有一般的(de)(de)(de)(de)(de)(de)(de)機械(xie)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)和(he)(he)(he)(he)(he)耐腐蝕性(xing)(xing)(xing)(xing)，塑性(xing)(xing)(xing)(xing)和(he)(he)(he)(he)(he)焊(han)接(jie)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)好(hao)(hao)，但彈性(xing)(xing)(xing)(xing)后(hou)效(xiao)和(he)(he)(he)(he)(he)滯后(hou)較大(da)，它的(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)途(tu)(tu)用(yong)(yong)(yong)(yong)(yong)于(yu)制(zhi)造(zao)測(ce)量(liang)(liang)非腐蝕介質(zhi)而精度(du)不(bu)高(gao)的(de)(de)(de)(de)(de)(de)(de)彈簧管(guan)；錫磷(lin)(lin)青(qing)(qing)銅(tong)主(zhu)要(yao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)是強(qiang)度(du)，彈性(xing)(xing)(xing)(xing)及腐蝕性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)高(gao)于(yu)黃(huang)(huang)銅(tong)，而且彈性(xing)(xing)(xing)(xing)后(hou)效(xiao)和(he)(he)(he)(he)(he)滯后(hou)小(xiao)于(yu)黃(huang)(huang)銅(tong)，它的(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)途(tu)(tu)是一般壓力表(biao)彈簧管(guan)用(yong)(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)最廣泛的(de)(de)(de)(de)(de)(de)(de)材(cai)料；鈹(pi)青(qing)(qing)銅(tong)主(zhu)要(yao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)是具有很(hen)(hen)高(gao)的(de)(de)(de)(de)(de)(de)(de)機械(xie)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)，工藝(yi)性(xing)(xing)(xing)(xing)和(he)(he)(he)(he)(he)耐腐蝕性(xing)(xing)(xing)(xing)強(qiang)，彈性(xing)(xing)(xing)(xing)后(hou)效(xiao)和(he)(he)(he)(he)(he)滯后(hou)很(hen)(hen)小(xiao)，彈性(xing)(xing)(xing)(xing)模量(liang)(liang)和(he)(he)(he)(he)(he)溫度(du)影響(xiang)也很(hen)(hen)小(xiao)，它的(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)途(tu)(tu)多(duo)用(yong)(yong)(yong)(yong)(yong)于(yu)制(zhi)造(zao)精密壓力表(biao)用(yong)(yong)(yong)(yong)(yong)彈簧管(guan)；不(bu)銹鋼主(zhu)要(yao)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)具有優良(liang)的(de)(de)(de)(de)(de)(de)(de)機械(xie)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)和(he)(he)(he)(he)(he)耐腐蝕性(xing)(xing)(xing)(xing)，能(neng)(neng)(neng)承受較高(gao)的(de)(de)(de)(de)(de)(de)(de)壓力，且工藝(yi)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)好(hao)(hao)，它的(de)(de)(de)(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)途(tu)(tu)多(duo)用(yong)(yong)(yong)(yong)(yong)于(yu)制(zhi)造(zao)防腐壓力表(biao)的(de)(de)(de)(de)(de)(de)(de)彈簧管(guan)。

         由(you)于壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)是(shi)通(tong)過測量元件的(de)變形，通(tong)過放大機構來帶動指針(zhen)的(de)轉動，從而顯示壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)值，我們在選(xuan)測范圍一(yi)般(ban)計量室對壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)進行檢修，調(diao)(diao)整(zheng)時(shi)，最(zui)常用(yong)的(de)儀器儀表(biao)(biao)是(shi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)校驗器和精(jing)(jing)密(mi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)，壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)校驗器有4種規格：0-0.6Mpa;0-6 Mpa;0-60 Mpa;0-250 Mpa,精(jing)(jing)密(mi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)的(de)使(shi)用(yong)要(yao)注意(yi)從精(jing)(jing)度和量程上加以(yi)選(xuan)擇。從儀表(biao)(biao)精(jing)(jing)度上選(xuan)擇精(jing)(jing)密(mi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)應依據被調(diao)(diao)整(zheng)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)的(de)精(jing)(jing)度進行選(xuan)擇，一(yi)般(ban)來說，調(diao)(diao)整(zheng)2.5級，4級的(de)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)可選(xuan)用(yong)0.4級的(de)精(jing)(jing)密(mi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)；調(diao)(diao)整(zheng)1.6（1.5）級的(de)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)可選(xuan)用(yong)0.25級的(de)精(jing)(jing)密(mi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)(biao)。

        工作中的注意事項(xiang)：

（1）量程(cheng)(cheng)裝在鍋爐(lu)，壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)容器上的(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表，其最大(da)(da)(da)量程(cheng)(cheng)（表盤(pan)上刻(ke)度(du)極限(xian)值）應與設備的(de)(de)(de)(de)工(gong)作壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)相適(shi)應。壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表的(de)(de)(de)(de)量程(cheng)(cheng)一般(ban)為設備工(gong)作壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)的(de)(de)(de)(de)1.5-3倍，最好(hao)取(qu)2倍。若選用(yong)的(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表量程(cheng)(cheng)過(guo)(guo)大(da)(da)(da)，由于(yu)(yu)同(tong)樣精(jing)度(du)的(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表，量程(cheng)(cheng)越(yue)大(da)(da)(da)，允許誤(wu)差的(de)(de)(de)(de)絕對值和肉眼(yan)觀察的(de)(de)(de)(de)偏差就越(yue)大(da)(da)(da)，則會影(ying)響壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)讀數的(de)(de)(de)(de)準確性；反(fan)之，若選用(yong)的(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表量程(cheng)(cheng)過(guo)(guo)小(xiao)，設備的(de)(de)(de)(de)工(gong)作壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)等于(yu)(yu)或接(jie)近壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表的(de)(de)(de)(de)刻(ke)度(du)極限(xian)，則會使壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表中(zhong)的(de)(de)(de)(de)彈(dan)性元件長期處于(yu)(yu)最大(da)(da)(da)的(de)(de)(de)(de)變(bian)形(xing)狀(zhuang)態，易產生永久變(bian)形(xing)，英氣壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表的(de)(de)(de)(de)誤(wu)差和使用(yong)壽命降低。另外，壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表的(de)(de)(de)(de)量程(cheng)(cheng)過(guo)(guo)小(xiao)，萬一超壓(ya)(ya)(ya)(ya)(ya)(ya)運(yun)行，指(zhi)針越(yue)過(guo)(guo)最大(da)(da)(da)量程(cheng)(cheng)接(jie)近零位，而使操作人(ren)員產生錯(cuo)覺，造成更(geng)大(da)(da)(da)的(de)(de)(de)(de)事故。因(yin)此(ci)，壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)表的(de)(de)(de)(de)使用(yong)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)(li)(li)(li)范圍，應不超過(guo)(guo)刻(ke)度(du)極限(xian)的(de)(de)(de)(de)百分之六十(shi)至(zhi)七十(shi)。

（2）工(gong)作用壓(ya)力表(biao)的(de)精(jing)度(du)(du)是以允許誤差占表(biao)盤刻(ke)度(du)(du)極限值的(de)百分數來表(biao)示的(de)。精(jing)度(du)(du)等級一般(ban)都表(biao)在表(biao)盤上，選用壓(ya)力表(biao)時(shi)，應(ying)根(gen)據設備(bei)的(de)壓(ya)力等級和實際工(gong)作需要(yao)來確定精(jing)度(du)(du)。

（3）表(biao)(biao)盤(pan)直(zhi)(zhi)徑(jing)為了(le)使操作人員準確地看清(qing)壓力(li)(li)(li)值，壓力(li)(li)(li)表(biao)(biao)的(de)表(biao)(biao)盤(pan)直(zhi)(zhi)徑(jing)不應過小，如果壓力(li)(li)(li)表(biao)(biao)裝得較高或(huo)離(li)崗位較遠，表(biao)(biao)盤(pan)直(zhi)(zhi)徑(jing)應增(zeng)大。

（4）壓(ya)力(li)表用于測量的介(jie)(jie)質如果有腐蝕性(xing)，那么(me)一定要(yao)根據腐蝕性(xing)介(jie)(jie)質的具體(ti)溫度(du)，濃度(du)等參數來選用不同的彈(dan)性(xing)元件材料(liao)，否則達不到(dao)預期的目的。

（5）日常重視使用維(wei)護，定期進行檢查(cha)，清洗并作(zuo)好使用情況記錄。

（6）壓(ya)(ya)力表一般檢定周期(qi)為半年。強制(zhi)檢定是保障(zhang)壓(ya)(ya)力表技(ji)術性能(neng)可靠，量值傳遞準確(que)，有效(xiao)保證安全生產的法律措施(shi)

                                                                                           東(dong)莞市雅德儀表有限公(gong)司