紹興數(shù)顯真空壓力表檢定報(bào)告

本文章主要介紹了：紹興數(shù)顯真空壓力表檢定報(bào)告,洛陽(yáng)上海銘控?zé)o線數(shù)字壓力表,數(shù)字壓力表等信息

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(紹興數(shù)顯真空壓力表檢定報(bào)告)

壓力表的精度等級(jí)是以允許誤差占?jí)毫Ρ砹砍痰陌俜致蕘?lái)表示的。
一般分為0.5、1、1.5、2、2.5、3、4七個(gè)等級(jí)（鍋爐上不用3級(jí)和4級(jí)），數(shù)值越小，其精度越高，例如，表盤量程0～2.5MPa精度2.5級(jí)的壓力表，它的指針?biāo)緣毫χ蹬c被測(cè)介質(zhì)的實(shí)際壓力值之間的允許誤差，不得超過(guò)上2.5MPa×2.5％=±0.0625。
壓力表實(shí)際誤差的大小，不但與精度有關(guān)，而且還與壓力表的量程大小有關(guān)。量程相同時(shí)，精度越高（即數(shù)字越小），壓力表的允許誤差越小。精度相同時(shí)，量程越大，壓力表的誤差越大。
擴(kuò)展資料：
壓力表使用注意事項(xiàng)：
1、儀表必須垂直：安裝時(shí)應(yīng)使用17mm扳手旋緊，不應(yīng)強(qiáng)扭表殼，運(yùn)輸時(shí)應(yīng)避免碰撞。
(紹興數(shù)顯真空壓力表檢定報(bào)告)

專利名稱：數(shù)字顯示電子壓力表的制作方法
技術(shù)領(lǐng)域：
本實(shí)用新型是一種壓力表，特別是一種數(shù)字顯示電子壓力表。
背景技術(shù)：
現(xiàn)有的壓力表，其讀數(shù)都是指針式的，指針式壓力表讀數(shù)誤差大，不精確，還需要經(jīng)常調(diào)零，使用不方便，不能適應(yīng)石油化工、煤礦液壓、電站大壩、汽車電子、液位測(cè)量等的需求。
發(fā)明內(nèi)容本實(shí)用新型的目的是為了克服現(xiàn)有壓力表讀數(shù)誤差大不精確的缺陷，發(fā)明一種數(shù)字顯示電子壓力表。本實(shí)用新型的目的是按如下的方式來(lái)實(shí)現(xiàn)的所述數(shù)字顯示電子壓力表，包括一殼體，殼體內(nèi)設(shè)有壓力傳感器、電子芯片和電源，殼體的正面設(shè)有數(shù)字顯示屏，壓力傳感器和數(shù)字顯示屏通過(guò)電路與電子芯片連接，電子芯片通過(guò)電路與電源連接，殼體的側(cè)面設(shè)有傳壓孔和通訊接口，通訊接口通過(guò)電路與電子芯片連接。所述數(shù)字顯示屏為三維液晶顯示屏。本實(shí)用新型的積極效果如下本實(shí)用新型采用穩(wěn)定性極好的壓力傳感器作為其敏感元件，大型三維液晶顯示，具有本地顯示及長(zhǎng)距離傳輸功能，它具有精度高、防水、防爆、無(wú)需調(diào)零等特點(diǎn)，可應(yīng)用于石油化

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