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图:Pt100热电阻测温电路设计与调试

更新时间: 2017年05月04日 所属类别: 知识百科 阅读量:

pt100bodianzuwenduchuanganqishiliyongqidianzuhewenduchengyidinghanshuguanxierzhichengdewenduchuanganqi,youyuqiceliangzhunquedugao、celiangfanweida、fuxianxinghewendingxinghaodeng,beiguangfanyongyuzhongwen(-200℃~650℃)fanweidewenduceliangzhong。

三线制PT100热电阻桥式测温电路图

tuyi: sanxianzhipt100redianzuqiaoshicewendianlutu

bodianzupt100shiyizhongguangfanyingyongdecewenyuanjian,zai-50~600℃fanweineijuyouqitarenhewenduchuanganqiwukebinideyoushi,baokuogaojingdu、wendingxinghao、kangganraonengliqiangdeng。youyubodianzudedianzuzhiyuwenduchengfeixianxingguanxi,suoyixuyaojinxingfeixianxingxiaozheng。xiaozhengfenweimonidianluxiaozhengheweichuliqishuzihuaxiaozheng,monixiaozhengyouhenduoxianchengdedianlu,qijingdubugaoqieyishouwenpiaodengganraoyinsuyingxiang,shuzihuaxiaozhengzexuyaozaiweichulixitongzhongshiyong,jiangpt100dianzudedianzuzhihewenduduiyingqilaihoucunrueepromzhong,genjudianluzhongshicedeadzhiyichabiaofangshijisuanxiangyingwenduzhi。

changyongdept100dianzujiefayousanxianzhiheliangxianzhi,qizhongsanxianzhijiefadeyoudianshijiangpt100deliangcexiangdengdededaoxianzhangdufenbiejiazailiangcedeqiaobeishang,shidedaoxiandianzudeyixiaochu。changyongdecaiyangdianluyouliangzhong: yiweiqiaoshicewendianlu,yiweihengliuyuanshicewendianlu。qizhongtu1weisanxianzhiqiaoshicewendianlu,tu2weiliangxianzhiqiaoshicewendianlu,tu3weihengliuyuanshicewendianlu。

百家乐官网xiamianfenbieduiqiaoshidianluhehengliuyuanshidianludeyuanlizaishejiguochengzhongyingzhuyishixiangjinxingshuoming(zhu: zheilianggedianlubenrenjunyoucaiyongjishiyan,zhengmingkexing)。

桥式测温电路

百家乐官网qiaoshicewendedianxingyingyongdianlurutu1suoshi(tu1hetu2junweiqiaoshidianlu,fenbiehuachulaishiweileshuomingliangxianzhijiefahesanxianzhijiefadequbie)。

cewenyuanli: dianlucaiyongtl431hedianweiqivr1diaojiechansheng4.096vdecankaodianyuan;caiyongr1、r2、vr2、pt100gouchengceliangdianqiao(qizhongr1=r2,vr2wei100ωjingmidianzu),dangpt100dedianzuzhihevr2dedianzuzhibuxiangdengshi,dianqiaoshuchuyigemvjideyachaxinhao,zheigeyachaxinhaojingguoyunfanglm324fangdahoushuchuqiwangdaxiaodedianyaxinhao,gaixinhaokezhijielianadzhuanhuanxinpian。chadongfangdadianluzhongr3=r4、 r5=r6、fangdabeishu=r5/r3,yunfangcaiyongdanyi5vgongdian。

两线制PT100热电阻桥式测温电路图

百家乐官网tuer: liangxianzhipt100redianzuqiaoshicewendianlutu

shejijidiaoshizhuyidian:

百家乐官网1、tongfududiaozhengr1her2dedianzuzhikeyigaibiandianqiaoshuchudeyachadaxiao;

2、gaibianr5/r3debizhijikegaibiandianyaxinhaodefangdabeishu,yibianmanzushejizheduiwendufanweideyaoqiu。

3、fangdadianlubixujiechengfufankuifangshi,fouzefangdadianlubunengzhengchanggongzuo(yiqianjiuyougegongchengshitebietixingshuozhiyoujiechengzhengfankuicainengzhengchanggongzuo,baijialeguanwangyemeizuoshiyanjiunatadangjingyan,haidebaijialeguanwangzhongxinzuoban)。

4、vr2yekeweidianweiqi,diaojiedianweiqizuzhidaxiaokeyigaibianwendudelingdiansheding,lirupt100delingdianwenduwei0℃,ji0℃shidianzuwei100ω,dangdianweiqizuzhidiaozhi109.885ωshi,wendudelingdianjiubeishedingzaile25℃。celiangdianweiqidezuzhishixuzaimeiyoujierudianlushidiaojie,zheishiyinweijierudianluhouceliangdedianzuzhifashenglegaibian。

5、lilunshang,yunfangshuchudedianyaweishuruyachaxinhao×fangdabeishu,danshijizaidianlugongzuoshiceliangshuchudianyayushuruyachaxinhaobingfeizheiyangdeguanxi,yachaxinhaobililunzhixiaohenduo,shijishuchuxinhaowei4.096*(rpt100/(r1+rpt100)- rvr2/(r1+rvr2))(1)shizhongdianzuzhiyidianlugongzuoshiliangqudeweizhun。

6、dianqiaodezhengdianyuanbixujiewendingdecankaojizhun,yinweiruguozhijievccdehua,dangwangyabodongzaochengvccfashengbodongshi,yunfangshuchudexinhaoyehuifashenggaibian,cishizaidaoyivccweifashengbodongshijianlidewendu-dianzubiaozhongquchabiaoqiuzhishijiubuzhengquele,zheikeyigenjushi(1)jinxingjisuandezhi。

恒流源式测温电路

hengliuyuanshicewendedianxingyingyongdianlurutu3suoshi。

PT100热电阻测温电路图

tusan: pt100redianzuhengliuyuanshicewendianlutu

cewenyuanli: tongguoyunfangu1ajiangjizhundianya4.096vzhuanhuanweihengliuyuan,dianliuliuguopt100shizaiqishangchanshengyajiang,zaitongguoyunfangu1bjianggaiweiruoyajiangxinhaofangda(tuzhongfangdabeishuwei10),jishuchuqiwangdedianyaxinhao,gaixinhaokezhijielianadzhuanhuanxinpian。

genjuxudigainian“gongzuoyuxianxingfanweineidelixiangyunfangdelianggeshuruduantongdianwei”,yunfangu1ade“+”duanhe“-”duandianweiv+=v-=4.096v;jiasheyunfangu1adeshuchujiao1duididianyaweivo,genjuxuduangainian,(0-v-)/r1+(vo-v-)/rpt100=0,yincidianzupt100shangdeyajiangvpt100=vo-v-=v-*rpt100/r1,yinv-her1junbubian,yincitu3xuxiankuangneidedianludengxiaoweiyigehengliuyuanliuguoyigept100dianzu,dianliudaxiaoweiv- /r1,pt100shangdeyajiangjinheqizishenbianhuadedianzuzhiyouguan。

shejijidiaoshizhuyidian:

1、dianyajizhunyuankeyicaiyongtl431antu1dedianluchanshengkediaode。

2、dengxiaohengliuyuanshuchudedianliubunengtaida,yibuchaoguo1maweizhun,yimiandianliudashidept100dianzuzishenfarezaochengceliangwendubuzhunque,shiyanzhengming,dianliudayu1.5majianghuiyoujiaomingxiandeyingxiang。3、yunfangcaiyongdanyi5vgongdian,ruguoceliangdewendubodongbijiaoda,jiangyunfangdegongdiangaiwei±15vshuangdianyuangongdianhuiyoujiaodagaishan。

4、dianzur2、r3dedianzuzhiqudezugouda,yizengdayunfangdeu1bdeshuruzukang。

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