濕度(du)傳感器是(shi)控制體系的要害器材,其挑選的準則主要依(yi)據(ju)詳細的運用領(ling)域,從精(jing)度(du)、丈量規模、響(xiang)應速(su)度(du)、穩定及(ji)體積巨細等方(fang)面(mian)進(jin)行思(si)考,主要有：

　　精(jing)度和長時間穩定(ding)濕度傳感(gan)器的精(jing)度要(yao)(yao)到達(da)水(shui)平才干作為計量用(yong)具運用(yong),其典型值(zhi)為±2%~±5%RH。濕度傳感(gan)器一般在開(kai)始運用(yong)時精(jing)度較(jiao)高,運用(yong)時間一長,因為塵土及有害氣體等的影響,會(hui)呈(cheng)現(xian)老化,從而使精(jing)度降。一般商品資料(liao)中給(gei)出的特性是在常溫文(wen)潔凈氣體中丈(zhang)量的。在實踐選用(yong)時,濕度傳感(gan)器的精(jing)度要(yao)(yao)與長時間穩定(ding)歸納起來思(si)考。

　　溫(wen)(wen)(wen)度(du)(du)規(gui)模(mo)及賠(pei)(pei)償(chang)(chang)(chang)方式濕(shi)敏元(yuan)件對溫(wen)(wen)(wen)度(du)(du)很靈敏,多數(shu)濕(shi)敏元(yuan)件難在40℃以上正常作(zuo)業(ye)。因(yin)為存(cun)在非線(xian)溫(wen)(wen)(wen)漂,這就(jiu)需要進行溫(wen)(wen)(wen)度(du)(du)賠(pei)(pei)償(chang)(chang)(chang),沒有溫(wen)(wen)(wen)度(du)(du)賠(pei)(pei)償(chang)(chang)(chang)的濕(shi)度(du)(du)傳(chuan)感器(qi)是不能(neng)保(bao)全溫(wen)(wen)(wen)規(gui)模(mo)精度(du)(du)的。溫(wen)(wen)(wen)度(du)(du)賠(pei)(pei)償(chang)(chang)(chang)有兩種(zhong)(zhong)方法(fa):一種(zhong)(zhong)是選(xuan)用(yong)(yong)(yong)單片機軟(ruan)件賠(pei)(pei)償(chang)(chang)(chang),另(ling)一種(zhong)(zhong)是選(xuan)用(yong)(yong)(yong)硬(ying)(ying)件進行賠(pei)(pei)償(chang)(chang)(chang)。選(xuan)用(yong)(yong)(yong)第(di)①種(zhong)(zhong)方法(fa)時,濕(shi)度(du)(du)傳(chuan)感器(qi)溫(wen)(wen)(wen)漂曲(qu)線(xian)的線(xian)性化直接影響到(dao)測量(liang)結果的作(zuo)用(yong)(yong)(yong),非線(xian)性的溫(wen)(wen)(wen)漂不能(neng)得到(dao)較好的賠(pei)(pei)償(chang)(chang)(chang)作(zuo)用(yong)(yong)(yong);第(di)2種(zhong)(zhong)方法(fa)因(yin)為選(xuan)用(yong)(yong)(yong)硬(ying)(ying)件進行跟從性賠(pei)(pei)償(chang)(chang)(chang),能(neng)夠取得實在的賠(pei)(pei)償(chang)(chang)(chang)作(zuo)用(yong)(yong)(yong)。

　　交換差是濕度傳(chuan)感器普及存在著的景象(xiang),一般同一類型的傳(chuan)感器全不能交換,所以在選(xuan)(xuan)用(yong)時盡量選(xuan)(xuan)用(yong)一樣(yang)廠(chang)家(jia)、一樣(yang)類型、交換好的商(shang)品,有些廠(chang)家(jia)在這(zhe)方面作(zuo)了(le)盡力(li),取得了(le)作(zuo)用(yong)。

　　濕度(du)(du)(du)傳(chuan)感器(qi)與(yu)濕度(du)(du)(du)變(bian)送(song)器(qi)在實踐選用(yong)時(shi),一般存在著兩種挑選:濕度(du)(du)(du)傳(chuan)感器(qi)與(yu)濕度(du)(du)(du)變(bian)送(song)器(qi)。兩個概念的(de)提法并不是(shi)很明(ming)確,經常稱為濕度(du)(du)(du)傳(chuan)感器(qi),但在實踐運用(yong)上(shang)區別是(shi)很大的(de)。

　　①濕(shi)度(du)傳感器。嚴厲含義上的濕(shi)度(du)傳感器是濕(shi)度(du)靈(ling)敏器材,現(xian)泛指(zhi)不能直接在現(xian)場(chang)運(yun)用(yong)的濕(shi)度(du)傳感器材或電(dian)路(lu)(lu)板。它(ta)單單保(bao)傳感探頭的精度(du),在實踐運(yun)用(yong)中(zhong),終究的歸納精度(du)與外圍電(dian)路(lu)(lu)的規劃及焊接技能有關。它(ta)沒(mei)有電(dian)源保(bao)護(hu)等現(xian)場(chang)要有外圍電(dian)路(lu)(lu),也沒(mei)有可直接運(yun)用(yong)的封裝方式,如無錫徽科特測控技術有限公(gong)(gong)司公(gong)(gong)司HKT系列商品。

　　②濕(shi)(shi)度變送器(qi)(qi)。傳(chuan)統(tong)含義濕(shi)(shi)度變送器(qi)(qi)是指(zhi)輸出為規(gui)范(fan)電壓(ya)或電流信號的(de)(de)(de)濕(shi)(shi)度傳(chuan)感(gan)器(qi)(qi),現泛指(zhi)能夠在(zai)現場直接(jie)運用(yong)(yong)(yong)(yong)的(de)(de)(de)濕(shi)(shi)度傳(chuan)感(gan)器(qi)(qi)商(shang)品(pin),它保的(de)(de)(de)是包含外圍電路(lu)的(de)(de)(de)歸納(na)精度,給出的(de)(de)(de)是不(bu)需批改的(de)(de)(de)測(ce)驗數據(ju)。代表商(shang)品(pin)有(you)羅卓(zhuo)尼克公司(si)系(xi)(xi)(xi)列(lie)(lie),維薩拉公司(si)系(xi)(xi)(xi)列(lie)(lie)商(shang)品(pin)、密析(xi)爾公司(si)系(xi)(xi)(xi)列(lie)(lie)商(shang)品(pin)、徽科特公司(si)系(xi)(xi)(xi)列(lie)(lie)等。用(yong)(yong)(yong)(yong)戶在(zai)運用(yong)(yong)(yong)(yong)時,可依據(ju)實踐情況進(jin)行選(xuan)用(yong)(yong)(yong)(yong),在(zai)運用(yong)(yong)(yong)(yong)于控制體(ti)(ti)系(xi)(xi)(xi)時,選(xuan)用(yong)(yong)(yong)(yong)濕(shi)(shi)度變送器(qi)(qi)方便,運用(yong)(yong)(yong)(yong)于戶外時還應該(gai)思(si)考體(ti)(ti)積等要素(su)。

　　濕(shi)度(du)傳感(gan)(gan)器(qi)(qi)的(de)(de)開(kai)(kai)展(zhan)有兩(liang)個(ge)方向(xiang):一個(ge)是(shi)濕(shi)敏(min)元(yuan)件(jian)(jian)及制作技能(neng)的(de)(de)開(kai)(kai)展(zhan),另(ling)一個(ge)是(shi)向(xiang)集(ji)成(cheng)(cheng)化(hua)(hua)、智能(neng)化(hua)(hua)、網(wang)絡化(hua)(hua)及微型化(hua)(hua)方向(xiang)開(kai)(kai)展(zhan)。新式傳感(gan)(gan)器(qi)(qi)的(de)(de)開(kai)(kai)展(zhan)有賴于利用(yong)新式靈敏(min)資料開(kai)(kai)發(fa)靈敏(min)元(yuan)件(jian)(jian)。靈敏(min)元(yuan)件(jian)(jian)作為基礎元(yuan)器(qi)(qi)材,一直得到(dao)了(le)(le)高/度(du)重視,很(hen)(hen)多(duo)發(fa)達國家投(tou)入了(le)(le)很(hen)(hen)多(duo)的(de)(de)人力、物力和財力來開(kai)(kai)展(zhan),如美國“國家納米(mi)技能(neng)”等(deng)。濕(shi)度(du)傳感(gan)(gan)器(qi)(qi)已不局(ju)限于簡單的(de)(de)濕(shi)敏(min)元(yuan)件(jian)(jian),而(er)是(shi)選(xuan)用(yong)體系集(ji)成(cheng)(cheng)技能(neng)向(xiang)智能(neng)化(hua)(hua)、網(wang)絡化(hua)(hua)方向(xiang)開(kai)(kai)展(zhan)。很(hen)(hen)多(duo)公司出產的(de)(de)新式濕(shi)度(du)傳感(gan)(gan)器(qi)(qi),不單選(xuan)用(yong)了(le)(le)智能(neng)測驗技能(neng),還發(fa)揮數(shu)字化(hua)(hua)、網(wang)絡化(hua)(hua)的(de)(de)特色,界說(shuo)了(le)(le)通訊協(xie)議,并得到(dao)了(le)(le)廣的(de)(de)運用(yong)。