表(biao)面張(zhang)力儀(yi)的傳(chuan)感器是(shi)否有保(bao)護裝置？是(shi)否需要天平自動鎖和阻尼震蕩(dang)回復模塊？

這個問題包括兩個方(fang)(fang)面：分析天平(ping)是否有(you)保護裝置；第二、表面張力儀的白金板法的連接方(fang)(fang)式有(you)哪些。

（1）采用梅特勒(le)的分析天(tian)平的表面(mian)張力(li)儀(yi)均(jun)具有上、下(xia)限位(wei)兩(liang)個位(wei)置的保(bao)護。因而(er)(er)，向下(xia)拉動或向上托起表面(mian)張力(li)儀(yi)的傳(chuan)感杠桿(gan)或托盤架均(jun)不會對天(tian)平造成影響(xiang)。因而(er)(er)無須額外(wai)的天(tian)平自動鎖。

（2）表(biao)(biao)(biao)面(mian)張(zhang)(zhang)力儀的(de)(de)(de)(de)(de)(de)(de)(de)白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)板(ban)或(huo)白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)板(ban)主要(yao)有(you)兩種方(fang)(fang)(fang)(fang)(fang)式(shi)，其(qi)一為軟連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)方(fang)(fang)(fang)(fang)(fang)式(shi)（美(mei)國(guo)科(ke)諾(nuo)主要(yao)采(cai)(cai)用(yong)(yong)軟連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)方(fang)(fang)(fang)(fang)(fang)式(shi)）、其(qi)二為硬(ying)(ying)(ying)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)方(fang)(fang)(fang)(fang)(fang)式(shi)（德國(guo)的(de)(de)(de)(de)(de)(de)(de)(de)儀器主要(yao)采(cai)(cai)用(yong)(yong)硬(ying)(ying)(ying)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)方(fang)(fang)(fang)(fang)(fang)式(shi)）。軟連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)方(fang)(fang)(fang)(fang)(fang)式(shi)時(shi)(shi)(shi)，裝(zhuang)載白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)板(ban)或(huo)白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)環(huan)(huan)時(shi)(shi)(shi)會(hui)產生額(e)外的(de)(de)(de)(de)(de)(de)(de)(de)向下(xia)拉的(de)(de)(de)(de)(de)(de)(de)(de)動(dong)(dong)(dong)(dong)作，因而(er)(er)(er)，要(yao)求(qiu)分析(xi)(xi)天(tian)(tian)平(ping)有(you)一個下(xia)限(xian)位的(de)(de)(de)(de)(de)(de)(de)(de)保護(hu)(hu)。如果(guo)傳(chuan)感器或(huo)分析(xi)(xi)天(tian)(tian)平(ping)沒有(you)這(zhe)個保護(hu)(hu)，則(ze)需要(yao)額(e)外設(she)計天(tian)(tian)平(ping)自動(dong)(dong)(dong)(dong)鎖(suo)。硬(ying)(ying)(ying)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)方(fang)(fang)(fang)(fang)(fang)式(shi)在(zai)(zai)裝(zhuang)載白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)環(huan)(huan)或(huo)白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)板(ban)時(shi)(shi)(shi)會(hui)額(e)外產生一個向上(shang)托的(de)(de)(de)(de)(de)(de)(de)(de)動(dong)(dong)(dong)(dong)作。如果(guo)分析(xi)(xi)天(tian)(tian)平(ping)不(bu)夠好(hao)(hao)(hao)，沒有(you)上(shang)限(xian)位保護(hu)(hu)，則(ze)需要(yao)設(she)計天(tian)(tian)平(ping)自動(dong)(dong)(dong)(dong)鎖(suo)，同時(shi)(shi)(shi)需要(yao)一個阻尼震蕩回(hui)復模塊。軟連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)的(de)(de)(de)(de)(de)(de)(de)(de)優點(dian)在(zai)(zai)于(yu)(yu)(yu)白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)環(huan)(huan)和板(ban)的(de)(de)(de)(de)(de)(de)(de)(de)水平(ping)保持(chi)相對(dui)于(yu)(yu)(yu)硬(ying)(ying)(ying)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)時(shi)(shi)(shi)會(hui)好(hao)(hao)(hao)得多，而(er)(er)(er)硬(ying)(ying)(ying)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)的(de)(de)(de)(de)(de)(de)(de)(de)優點(dian)在(zai)(zai)于(yu)(yu)(yu)測試(shi)高粘(zhan)度樣品時(shi)(shi)(shi)，易(yi)于(yu)(yu)(yu)將板(ban)或(huo)環(huan)(huan)插入到(dao)液(ye)體中。但(dan)事實上(shang)，采(cai)(cai)用(yong)(yong)硬(ying)(ying)(ying)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)的(de)(de)(de)(de)(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)張(zhang)(zhang)力儀由(you)于(yu)(yu)(yu)其(qi)測試(shi)技術決定(ding)(ding)其(qi)無法(fa)測試(shi)有(you)粘(zhan)度樣品的(de)(de)(de)(de)(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)張(zhang)(zhang)力值(zhi)，所(suo)(suo)以(yi)，這(zhe)個優點(dian)就無從談起了。同時(shi)(shi)(shi)，硬(ying)(ying)(ying)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)方(fang)(fang)(fang)(fang)(fang)式(shi)可(ke)以(yi)迅速使得白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)環(huan)(huan)或(huo)白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)板(ban)穩定(ding)(ding)下(xia)來而(er)(er)(er)不(bu)會(hui)來回(hui)晃(huang)動(dong)(dong)(dong)(dong)。而(er)(er)(er)事實上(shang)，美(mei)國(guo)科(ke)諾(nuo)的(de)(de)(de)(de)(de)(de)(de)(de)表(biao)(biao)(biao)面(mian)張(zhang)(zhang)力儀采(cai)(cai)用(yong)(yong)軟連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)時(shi)(shi)(shi)，當白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)環(huan)(huan)或(huo)白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)板(ban)晃(huang)動(dong)(dong)(dong)(dong)時(shi)(shi)(shi)，分析(xi)(xi)天(tian)(tian)平(ping)上(shang)的(de)(de)(de)(de)(de)(de)(de)(de)值(zhi)根本(ben)不(bu)會(hui)有(you)變(bian)動(dong)(dong)(dong)(dong)（分析(xi)(xi)天(tian)(tian)平(ping)的(de)(de)(de)(de)(de)(de)(de)(de)穩定(ding)(ding)性(xing)足夠好(hao)(hao)(hao)），且接(jie)(jie)(jie)觸到(dao)液(ye)面(mian)后，晃(huang)動(dong)(dong)(dong)(dong)會(hui)馬上(shang)停止。所(suo)(suo)以(yi)，相對(dui)于(yu)(yu)(yu)微略的(de)(de)(de)(de)(de)(de)(de)(de)缺點(dian)而(er)(er)(er)言，我(wo)們更看重(zhong)軟連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)方(fang)(fang)(fang)(fang)(fang)式(shi)時(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)環(huan)(huan)或(huo)板(ban)的(de)(de)(de)(de)(de)(de)(de)(de)水平(ping)度對(dui)于(yu)(yu)(yu)測值(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)影(ying)響(xiang)。事實上(shang)，只(zhi)有(you)很少的(de)(de)(de)(de)(de)(de)(de)(de)儀器廠商采(cai)(cai)用(yong)(yong)硬(ying)(ying)(ying)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)的(de)(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)(fang)(fang)(fang)式(shi)，美(mei)國(guo)科(ke)諾(nuo)的(de)(de)(de)(de)(de)(de)(de)(de)儀器只(zhi)有(you)在(zai)(zai)測試(shi)粘(zhan)度作用(yong)(yong)力大于(yu)(yu)(yu)白(bai)(bai)(bai)(bai)(bai)金(jin)(jin)板(ban)自重(zhong)時(shi)(shi)(shi)才(cai)會(hui)考慮到(dao)硬(ying)(ying)(ying)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)的(de)(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)(fang)(fang)(fang)式(shi)或(huo)改變(bian)配重(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)方(fang)(fang)(fang)(fang)(fang)式(shi)。綜合而(er)(er)(er)言，是否配備天(tian)(tian)平(ping)自動(dong)(dong)(dong)(dong)鎖(suo)和阻尼震蕩回(hui)復模塊是判斷表(biao)(biao)(biao)面(mian)張(zhang)(zhang)力儀連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)方(fang)(fang)(fang)(fang)(fang)式(shi)的(de)(de)(de)(de)(de)(de)(de)(de)一個依據，其(qi)意義僅在(zai)(zai)于(yu)(yu)(yu)用(yong)(yong)戶(hu)對(dui)于(yu)(yu)(yu)表(biao)(biao)(biao)面(mian)張(zhang)(zhang)力測試(shi)方(fang)(fang)(fang)(fang)(fang)法(fa)的(de)(de)(de)(de)(de)(de)(de)(de)判斷而(er)(er)(er)非(fei)決定(ding)(ding)性(xing)指標。