東莞數(shù)顯壓力表自來(lái)水用

本文章主要介紹了：東莞數(shù)顯壓力表自來(lái)水用,鄭州數(shù)字式壓力表的發(fā)展,數(shù)字壓力表等信息

②精密壓力表的刻線很密，很容易出現(xiàn)誤讀、誤判的現(xiàn)象，而且工人操作疲勞及人員的主觀原因等均會(huì)成為產(chǎn)生讀數(shù)差異的因素；
③操作時(shí)，校驗(yàn)人員在判斷開(kāi)關(guān)變化后，再讀取精密壓力表讀數(shù)或數(shù)字壓力計(jì)示值，數(shù)據(jù)因不同時(shí)而造成誤差。
事實(shí)證明：這種校驗(yàn)方法已不能適應(yīng)現(xiàn)代工業(yè)生產(chǎn)中對(duì)壓力開(kāi)關(guān)的校驗(yàn)要求。在壓力開(kāi)關(guān)的校驗(yàn)過(guò)程中，如果沒(méi)有精密的檢驗(yàn)設(shè)備則很難保證校驗(yàn)質(zhì)量。
全新全自動(dòng)壓力校驗(yàn)儀價(jià)格-北京全自動(dòng)壓力校驗(yàn)儀供應(yīng)商-哪里有全自動(dòng)壓力校驗(yàn)儀-優(yōu)質(zhì)全自動(dòng)壓力校4000118588
(東莞數(shù)顯壓力表自來(lái)水用)

26bar730G27-12至300psi,
-0.83至20bar
-83至2000kPa0.01psi,
0.001bar1200psi,
80bar730G07-12至500psi,
-0.83至34bar
-83至3400kPa0.01psi,
0.001bar2000psi,
138bar730G08-14至1000psi,
-0.97至69bar
-97至6900kPa0.1psi,
0.001bar4000psi,
266bar730G10-14至2000psi,
-0.97至140bar
-97至14MPa0.1psi,
0.01bar正壓±0.05%量程真空±0.1%量程8000psi,
550bar730G29-14至3000psi,
-0.97至200bar
-97至20MPa0.1psi,
0.01bar10000psi,
690bar730G30-14至5000psi,
-0.97至340bar
-97至34MPa0.1psi,
0.01bar10000psi,
(東莞數(shù)顯壓力表自來(lái)水用)

顯示視窗（右）：4位LED顯示高壓設(shè)定值（橘色）
出售SMC壓力開(kāi)關(guān)ISA2-GE25N
(東莞數(shù)顯壓力表自來(lái)水用)

(東莞數(shù)顯壓力表自來(lái)水用)

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(東莞數(shù)顯壓力表自來(lái)水用)

為此，原國(guó)家標(biāo)準(zhǔn)局三處于1989年6月20日召集了壓力表鉛封問(wèn)題的協(xié)調(diào)會(huì)精密壓力表，請(qǐng)有關(guān)方面的負(fù)責(zé)人及專家參加。
通過(guò)協(xié)商，會(huì)議最后取得一致意見(jiàn)，同意對(duì)壓力表不做鉛封的規(guī)定，并提出保證供應(yīng)帶鉛封壓力表的具體措施。
于是，1987年版的壓力表國(guó)家標(biāo)準(zhǔn)（GB1226-1986）中，沒(méi)有關(guān)于壓力表鉛封的條款。
而1987年版的壓力表檢定規(guī)程（JJG 52-1987）中第21條指出：“經(jīng)鑒定合格的壓力表應(yīng)予封印或發(fā)給合格證，必要時(shí)封印同時(shí)也發(fā)給合格證”。
這樣在不銹鋼壓力表生產(chǎn)標(biāo)準(zhǔn)和壓力表檢定規(guī)程中均未對(duì)壓力表鉛封做出硬性規(guī)定。
所以對(duì)壓力表該不該鉛封得出以下結(jié)論：
(東莞數(shù)顯壓力表自來(lái)水用)

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