現(xiàn)在有一水罐儀表,輸入信號(hào)是4—20ma,輸出4-20ma水罐高度為1.9m,液位探頭位置在0.4m,現(xiàn)在在儀表上標(biāo)定時(shí),4ma對(duì)應(yīng)0.4m,20ma對(duì)應(yīng)1.9m,結(jié)果顯示值為0.7m,實(shí)際值應(yīng)該是1.1米,請(qǐng)問(wèn)應(yīng)該如何標(biāo)定?還有程序中有這個(gè)問(wèn)題:溫度數(shù)值轉(zhuǎn)換成輸出值時(shí)要除以256;而液位卻是除以5120,這是為什么?
補(bǔ)充一點(diǎn),液位量程是0-50KPA