1.材質對計量誤差的影響
孔板流量計標準孔板具有測量精度高、安裝方便、使用範圍廣、造價低等特點．與三闕組、差壓變送器peitao，keguangfanyingyongyugezhongjiezhideliuliangceliang。kongbanzaizuichushiyongshicaikenengfuhebiaozhunyaoqiu，shiyongyiduanshiwenhoukongbanrenkoubianyuandemosunjiaju，fashengdunhuashiliuchuxishuC值改變，從而影響流量計準確度。輕微的會引起流量測量值5％的負偏差，嚴重的能達到12％的負偏麓。
2.人工安裝對計量誤差的影響
kongbanliuliangjiruoanzhuanghuoweixiubudang，shikongbanchanshengbianxing，daozhiliuliangceliangwuchapianda。rutuzaifalanquyadekongbanshangjinxingceshi，bianxinghoudekongbanceliangzuidawuchayuewei3．5％。
3.維護管理對計量誤差的影響
孔板流量計在計量過程中，未嚴格執行計量管理規程要求定期維修和檢驗，設備會老化、guanxianhuifushiyijitianranqizhongdeyoushuiheshalifenchenhuizaochengjiliangzhunqueduxiajiang，chanshengjiliangwuchada。rujieliuzhuangzhiweidingqidijinxingjianzhaqingxi，kongbanquyazhuangzhihuiyanzhongwuran，kongbanyingliumianwuwuduiji，jiliangjieguoyipiandi，fujiawuchawufaguji；計量旁路管道閥門內漏，計量值易偏低；計量檢測器具使用和維護不當，造成測量參數的附加誤差等。
