l 薄膜铂电阻系列
型号
|
外形尺寸
W×L×Hmm
|
标称阻值
R0
|
工作电流
mA
|
引线尺寸
W×H×Lmm
|
工作温度
℃
|
误 差
|
外形图
mm
|
CRZ-1632-100-Ni
|
1.6×3.2×1.0
|
100Ω
|
1
|
0.25×0.15×12
|
-40~450
|
1/3DIN
A
B
2B
|
|
CRZ-2005-100-Ni
|
2.0×5.0×1.0
|
0.25×0.15×12
|
-40~450
|
CRZ-2005-100-Pd
|
0.3×0.2×10
|
-50~500
|
CRZ-2005-1000-Ni
CRZ-2005-500-Ni
|
500Ω
1000Ω
|
0.5
|
0.25×0.15×12
|
-40~450
|
ST-1003-Pt
|
1.0×3.0×1.3
|
20Ω
|
1
|
0.25×0.15×12
|
-50~500
|
l 线绕陶瓷PC(玻璃PG)铂电阻
型号
|
外形尺寸
D×Lmm
|
标称阻值R0
|
工作电流mA
|
引线尺寸
D×Lmm
|
误差
|
工作温度
℃
|
外形图
mm
|
PC1612
|
1.6×12
|
100Ω
|
5
|
0.20×10
|
A
B
|
-200~600
-200~850
|
|
PC1615
|
1.6×15
|
0.20×10
|
PC1625
|
1.6×25
|
0.20×10
|
PC2213
|
2.2×13
|
0.35×10
|
PC2215
|
2.2×15
|
PC2515
|
2.5×15
|
PC3015
|
3.0×15
|
PC3025
|
3.0×25
|
pt100的应用
石油倾点温度测试PT100温度传感器的标定
摘要:作者设计了直径为3mm、长为27cm 的Pt100型传感器,根据0.10℃刻度的温度测试仪作为标定标准,利用软件来矫正其非线形失真,该产品实现对石油倾点温度信号的采集和标定。
关键词: Pt100传感器;电桥测温;石油倾点
一、引言
石油倾点温度是指管道内凝固态的原油开始融解流动的*低温度。国际上测试规程要求每隔2℃就要对其流动情况进行判断并测温,但由于石油运输管线很长,原油每升温1℃需要大量能源,因此对倾点温度测量的精度对油田节能有重大意义。我们选用PT100温度传感器来完成对石油倾点温度的测量。
天天时时彩
二、Pt100工作原理及其主要技术参数
Pt100传感器是利用铂电阻的阻值随温度变化而变化、并呈一定函数关系的特性来进行测温,其温度/阻值对应关系为[1]:
(1)-200℃<t<0℃时,RPt100=100[1+At+Bt2+Ct3(t-100)] (1)
天天时时彩
(2)0℃≤t≤850℃时,RPt100=100(1+At+Bt2) (2)
SHIZHONG,A=3.90802×10-3;B=-5.80×10-7;C=4.2735×10-12。
天天时时彩Pt100WENDUCHUANGANQIDEZHUYAOJISHUCANSHURUXIA:CELIANGFANWEI:-200℃~+850℃;YUNXUPIANCHAZHI△℃:AJI±(0.15+0.002│t│), BJI±(0.30+0.005│t│);REXIANGYINGSHIJIAN<30s;*XIAOZHIRUSHENDU:REDIANZUDE*XIAOZHIRUSHENDU≥200mm;YUNTONGDIANLIU≤5mA。LINGWAI,Pt100WENDUCHUANGANQIHAIJUYOUKANGZHENDONG、WENDINGXINGHAO、ZHUNQUEDUGAO、NAIGAOYADENGYOUDIAN。
SAN、QINGDIANWENDUCELIANGYUANLI:
1、YUANLIFANGKUANGTU
GENJUQINGDIANWENDUCESHIDEGUONEIWAIYAOQIU—WENDUMEIJIANG2℃JIUYAODUIYOUYANGDENINGJIEQINGKUANGJINXINGJIANCE,WOMENSHEJILECELIANGGUOCHENG(RUTU1)。
天天时时彩2、DIANQIAOCAIJISHUJUDEDIANLUTUJIYUANLI
Pt100DIANQIAODIANLURUTU2SUOSHI。QIZHONG,R1﹑R2﹑R3﹑RPt100ZUCHENGDIANQIAO,R1=R2=R3=R0。WEILEBIMIANLIUGUOPt100CHUANGANQIDEDIANLIUGUODASHIQIFAREJINERDAOZHIFEIXIANXINGSHIZHENZENGDA,DIANQIAODIANYABUYITAIGAO,YIBANYAOQIUIm<5mA,DIANQIAODIANYAVbrg=1V。DIANQIAOSHUCHUYACHAWEI:
VD= (3)
LINGRPt100-R0=ΔR,ZEYOU:
VD= (4)
天天时时彩YOUPt100WENDU/ZUZHIDUIYINGGUANXISHIKEZHI,DANGWENDUJIAODISHI,Pt100DEZUZHIBIANHUALIANGΔRXIANGDUIYUR0JIAOXIAO,ZEDIANQIAOSHUCHUYACHAWEI: VD= ,JIVDZHENGBIYUPt100CHUANGANQIDEZUZHIBIANHUALIANGΔR,YESHUOMINGWENDUJIAODISHI,Pt100CHUANGANQIDEXIANXINGDULIANGHAO;DANGWENDUJIAOGAOSHI,ΔR/R0DEZHIJIAODA,Pt100CHUANGANQIDEXIANXINGDUBIANCHA,CISHIYAOYONGRUANJIANLAIJIAOZHENG。
四、测量中的定量计算及误差分析
天天时时彩1、YUNSUANFANGDAQIFANGDABEISHUDEQUEDING
天天时时彩YOUCHUANGANQIDEWENDUHEZUZHIGUANXISHIKEZHI,DANGWENDUBIANHUA1℃SHI,Pt100DEZUZHIBIANHUAYUEWEI0.38W,DUIYINGDEDIANQIAOSHUCHUYACHAWEI:VD= =0.001V。
RUOCAIYONG8WEIA/DZHUANHUANQI,FENBIANLVWEI0.0196V,ZEYUNSUANFANGDAQIDE*XIAOFANGDABEISHUYINGWEI20BEI。RUOCEWENDESHANGXIANDINGWEI85℃ (QINGDIANWENDUYIBANXIAOYUGAIWENDU), PtCHUANGANQIZAI85℃SHIDELILUNZUZHIWEI132.8W,DIANQIAODIANYAWEI1V,ZEVD= 0.08296V≈0.083V,JIYUNFANGDE*DAFANGDABEISHUWEI60.3。ZONGHESHANGSHU,KEXIANDINGYUNFANGDEFANGDABEISHUYINGZAI20~60ZHIJIAN。
2、WUCHAFENXI
(1)QIAODIANYAVbrg=1VSHIBODONGCHANSHENGDEWUCHA[2]
CONGSHANGMIANDEFENXIKEZHI,ZAIMOUYIWENDUSHI,Pt﹑R0BUBIAN,SHEDIANQIAODIANYAYOUΔVbrg(mV)DEBIANHUA,JIUHUIDAOZHIVDYOU (mV)DEBIANHUA。ZAI0℃SHI,ΔR=5W,ZEVD= =0.013ΔV(mV);RUOLINGΔVD=1mV,ZEΔV=76mV,JI0℃ZUOYOU,DIANQIAODIANYAVbrgYOU76mVBODONG,HUIYINQI1℃DEWENDUWUCHA;TONGLIZAI85℃ZUOYOU,DIANQIAODIANYAYOU10mVDEBODONG,ZEHUIYINQI1℃DEWENDUWUCHA。KEJIANDIANQIAODIANYAVbrg=1VSHIDEBODONGXISHUJIDUICEWENDAILAIDEWUCHASHIHENDADE,YINGJIANGQIDIANYABODONGXIANZHIZAI1mVDEJIBIESHANG。
(2)YUNFANGFEIXIANXINGCHANSHENGDEWUCHA
天天时时彩YOUYUYUNFANGDEFANGDABEISHUYINGZAI20~60ZHIJIAN,KEJIANGFANGDABEISHUDINGWEI50;RUOCEWENFANWEISHI0℃~85℃,ZEZAI0℃SHI,VD=13mV;ZAI85℃SHI,VD=99.5mV,SHUOMINGSHURUXINHAODEFANWEIZAI13mV~99.5mVZHIJIANBIANHUA。YIPINGJUNZHI50ZUOWEIFANGDABEISHU,CISHISHURUXINHAOWEI13mV,HUANSUANCHULAIDESHURUDIANYAXINHAOZHIWEI12.48mV,ΔVD=-0.52mV,JIANGHUIYINQIYUE1.5℃DEWUCHA。YOUCIKEJIANYUNFANGDEFEIXIANXINGJIANGHUIDAILAIDAYUE1.5℃DEWUCHA,ZAISHIJICELIANGZHONG,TIGAOYUNFANGXIANXINGDUYIJIYUNFANGFANGDABEISHUJUNKEYIJIANSHAOYOUYUNFANGDAILAIDEWUCHA。
(3)A/DZHUANHUANQIFEIXIANXINGDAILAIDEWUCHA
ZAISHIJIYINGYONGZHONGHUIFAXIAN,DUITONGYIMONISHURUXINHAOVi,JINGA/DZHUANHUANDECHUDESHUZILIANGHUIYOU±1WEIDETIAOBIAN,ZHEISHIYOUA/DZHUANHUANQIDEPANDUANWUCHAZAOCHENGDE。A/DZHUANHUANQIDEYIWEITIAOBIANDUIYINGDEDIANYAZHI,JIWEIGAIBAWEIA/DZHUANHUANQIDEFENBIANLV,WEI0.0196V=19.6mV;ZHESUANDAOSHURUDUANDUIYINGDEDIANYAZHIWEI0.392mV,JIANGHUICHANSHENG0.392℃DEWENDUWUCHA。
(4)A/DZHUANHUANQICANKAODIANYAVrefDAILAIDEWUCHA
A/DZHUANHUANQICAIYONGZHUCIBIJINSHIZHUANHUANQIAD0809,QIZHUANHUANSUDUJIAOMAN,RUGUOSHURUXINHAOZAIZHUANHUANGUOCHENGZHONGBUDUANBIANHUA,ZEYIFASHENGCUOWU,SHIYONGSHIYINGJIACAIYANGBAOCHIQI,QIEZHIDUIBENCICAIYANGDEXINHAOJINXINGZHUANHUAN,YIQUEBAOZHUANHUANXINHAOKEKAOXING。LINGWAI,ZAIBIJIAOZHUANHUANGUOCHENGZHONG,VrefDEBIANHUAHUIDUISHUCHUDEERJINZHIDAIMAYOUYINGXIANG。ZAIMONISHURUXINHAOBUBIANDEQINGKUANGXIA,RUOVrefBIANDA,HUIDAOZHISHUCHUDEERJINZHIDAIMABIANXIAO;FANZHI,ZEBIANDA,CONGERDAOZHILEWENDUWUCHA。
五、注意事项与结论
天天时时彩SHIYONGZHONGYINGZHUYI,YOUYUREDUOXINGHUISHIREDIANZUZUZHIBIANHUAZHIHOU,WEIXIAOCHUWUCHA,YINGJINKENENGDIJIANSHAOREDIANZUBAOHUGUANWAIJING,SHIDANGZENGJIAREDIANZUDECHARUSHENDUSHIREDIANZUSHOUREBUWEIZENGJIA。YAOJINGCHANGJIANCHABAOHUZHUANGKUANG,FAXIANYANGHUAHUOBIANXINGYINGLIJICAIQUCUOSHI,BINGDINGQIJINXINGXIAOYAN。REDIANZUYINGBIMIANFANGZHIZAILUPANGHUOJUJIARETITAIJIN,YINGJINLIANGANZHUANGZAIZHENDONGXIAODEDIFANG;TONGSHIWEIBIANYUSHIGONGHEWEIHU。ANZHUANGWEIZHIYINGJINKENENGBAOCHICHUIZHI,DANZAIYOUYUANYOULIUDONGSHIZEBIXUQINGXIEANZHUANG,JIEXIANHECHUKONGYINGXIANGXIA。
天天时时彩YOUSHANGMIANDEFENXIKEDE,WEILETIGAOWENDUCELIANGDEZHUNQUEXING,YINGSHIYONG1VDIANQIAODIANYUAN﹑A/DZHUANHUANQIDE5VCANKAODIANYUANYAOWENDINGZAI1mVJI;ZAIJIAGEYUNXUDEQINGKUANGXIA,Pt100CHUANGANQI﹑A/DZHUANHUANQIHEYUNFANGDEXIANXINGDUYAOGAO。TONGSHI,LIYONGRUANJIANJIAOZHENGQIWUCHA,KEYISHICEDEWENDUDEJINGDUZAI±0.2℃。
ZAICPUDEYINGYONG
YIBANDEWENDUCHUANGANQI(WULUNSHIREMINDIANZUHUOICWENDUCHUANGANQI)DOUXUYAOHENZHANGDESHIJIANCAINENGGOUJIANGRECHUANDAODAOCHUANGANQIDEHEXINBUFEN。GENJUNationalNEIBUDESHIYANJIEGUO,CONGCPUBARECHUANDAODAOKONGQIZHONG,ZAICONGKONGQIZHONGCHUANDAODAOWENDUCHUANGANQIZHONG,ZHEIGEGUOCHENG*SHAOXUYAO20FENZHONGYISHANGDESHIJIAN。RUGUOSANREPIAN(Heat Sink)MEIZHUANGHAOHUOFENGSHANMEIZHUAN,BUDAOERFENZHONGDESHIJIAN,SHIYONGZHEDECPUKENENGJIUHUISHAOHUI。
SUOYI,CPUCHANGSHANG(IntelHEAMD)JIANGYIKE3904MAIRUXINPIANZHONG,WOMENCHENGZHEIKE3904WEIYUANCHENGERJIGUAN(Remote Diode),YINWEITALIWENDUCHUANGANQIBENSHENHENYUAN。YUSHIZAIDUANDUANJIGEHAOMIAO(mini-second)ZHONG,WENDUCHUANGANQIBIANNENG**DIZHENCEDAOCPUNEIBUDEWENDULE。XIANZAIDEJISHUYAONENGZUODAO1℃DE**DUYIJINGBUSHIHENNANDESHI,ERQIEHUIBIANCHENGPCHEBIJIBENJISUANJIDEYIGEZHONGYAODEQUSHI。
ZAILM86(TU1)DEYUNYONGSHILIZHONG,TONGCHANGT_CRIT_ADESHUCHUXINHAOYONGLAIZUOGUOWENDUBAOHUDEGONGNENG,WOMENCHENGZHIWEIREBAOHU(Thermal Shutdown)。HAOCHUSHIDANGWindowsHUOMOUYIGEYINGYONGCHENGXUZAOCHENGXITONGSIJISHI,LM86HAINENGBAOHUZHENGGEXITONG。ERAlertZHEIGESHUCHUXINHAOBIANKEYIZUOWEIRUANJIANZHONGDUAN,YIDADAOACPIGUIGEDEYAOQIU。LINGWAI,LM86CHULENENGJIEDAOCPUDERemote DiodeZHIWAI,BENSHENNEIBUHAIYOUYIKECHUANGANQI(sensor),KEYIGANCELM86SUOZAIDEWENDU。SUOYI,QIANMIANSUOTIDAODEPCDEXITONGWENDUHEBIJIBENJISUANJIDEDAOREGUAN,BIANKEYISHIYONGLM86DEBENDICHUANGANQILAIZHENCE,BUXUYAOZAIHUAEWAIDECHENGBENQUMAILINGWAIYIKEWENDUCHUANGANQI。
天天时时彩 * HUITUXINPIANHUO3DJIASUXINPIAN - LM26, LM88
TONGCHANGHUITUXINPIANYESHIBUNENGBEIJIANGPINLAIZHIXINGDE,FOUZEHUAMIANHUIBIANCHENGMANDONGZUOBOFANGYIBAN。NEI*HAODEFANGFAHAISHIJIAYISANREFENGSHAN。ZAIZHEILIJIUYOULIANGGEFANGSHILAIJIHUOHEGUANBIFENGSHANLE,**GESHIBIANYIDEZUOFA,YONGLM26LAIZHENCEWENDU(RUTU2),DENGDADAOMOUYIGEJIEXIANSHIBIANJIHUOFENGSHAN,RUOWENDUJIANGXIALAILE,BIANZIDONGGUANBIFENGSHAN。**SHICAILM88LAISHEJISHIMAODE4DUANBIANSUFENGSHANKONGZHIQI(RUTU3),RANGBUTONGWENDUDEZHUANGKUANGNENGGOUYOUBUTONGDEZHUANSU。
* Power MOSFET - LM26
WULUNSHIPCDEDIANYUANGONGYINGQIHUOZHESHIBIJIBENJISUANJIZHONGDEDC-DCZHUANHUANMOKUAI,NEIBUDOUHUIYOUYIKEHENTANGDEPower MOSFET。SUIRANDIANYUANBUFENDOUYOUYIGEFENGSHANSUISHIZAIZHUANDONG,DANSHIWOMENBIXUSHEXIANGYIJIANSHI:WANYIFENGSHANHUAIDIAOLE,HUOZHENEIBUDIANLUYOUFASHENGDUANLUDESHIHOU,ZENMEBAN?LIYONGLM26DEGUOWENDUBAOHUGONGNENG,ZAIJIXIANWENDUSHINENGGOUZIDONGGUANBIDIANYUANERDADAOGUANBI(Shutdown)HUOSHEN*HUIFU(Recovery)DEGONGNENG。
* PCMCIA - LM88
LM88BENSHENBINGBUBEISHEJILAIZUOWEIFENGSHANDE4DUANBIANSUKONGZHIQI,ERSHINENGTONGSHIZHENCEERGEDAICEWU。YIBANBIJIBENJISUANJIDEPCMCIACHACAODOUYOULIANGGE,SUOYILM88SHIYONGLAIZHENCEPCMCIADE*JIAXUANZE。YOUYULM88BUXUYAOYONGRUANJIANLAIKONGZHI,SUOYIWOMENBUYONGDANXINWindowsSIJIHUOLANPINGMU(Blue Screen)DEWENTI。
虽然在过去的PC和笔记本计算机中,温度传感器并不起眼,也没有工程师会去注意它的重要性,更不用说使用者能感觉到它的存在。但是,对整个系统这些重要芯片来说,它是很重要的保护者,尤其是当系统愈来愈高速且愈来愈热之后,它的重要性也会更加明显,并且能左右系统的稳定性。希望本文能够带给读者一个清晰的印象,究竟温度传感器在PC系统中是扮演哪些角色?也希望工程师在验证系统稳定性时,不妨考虑一下温度传感器的一些重要参数和功用。