1、PT100 热电阻计算与分度表丹东鸭绿江敏感元件有限公司 http:/ 该产品执行 DIN44081、DIN44082 标准，体积小、灵敏度高、寿命长。用于超温保护的场所，可以单支或多支串联与电机保护器配合使用。传感器测温端安装在设备中需要测温的位置，引线接至电机保护器的信号输入端，当温度接近绝缘耐热等级温度时，输入电阻值达到电机保护器动作阀值，保护器断开电路实施保护。技术数据：控制温度范围为 TK60TK180。控制温度 TK 每间隔5设定一种规格。一至六芯都可生产。在单片机读取 AD 转换后的 BCD 码时，为了避免读取不正确数值，在软件编程时采用对数据多次采样的方法，即在一定的时间内，连
2、续读取 BCD 码，全部为一样的数值时才作为正确的数值接收，否则视为不正确数值而被忽略，这样可以有效地保障在显示器上输出的温度值连续变化，而不发生干扰性的跳动。由于 PT100 铂热电阻的阻值随温度的变化为非线性的，所以在软件编程时进行了线性拟合，阻值(R)与温度(T)的关系式为 T=2.469R+27.2，其中电阻 R 的单位是 ；T 的单位是 K。热电偶/热电阻的区别基础知识 2009-09-01 17:18:10 阅读 180 评论 0 字号：大中小 热电偶是一种测温度的传感器，与热电阻一样都是温度传感器，但是他和热电阻的区别主要在于：一、信号的性质，热电阻本身是电阻，温度的变化，使电阻
3、产生正的或者是负的阻值变化；而热耦，是产生感应电压的变化，他随温度的改变而改变。二、两种传感器检测的温度范围不一样，热阻一般检测 0-150 度温度范围，最高测量范围可达 600度左右（当然可以检测负温度） 。热耦可检测 0-1000 度的温度范围（甚至更高）所以，前者是低温检测，后者是高温检测。三、从材料上分，热阻是一种金属材料，具有温度敏感变化的金属材料，热耦是双金属材料，既两种不同的金属，由于温度的变化，在两个不同金属丝的两端产生电势差。四、PLC 对应的热电阻和热电偶的输入模块也是不一样的，这句话是没问题，但一般 PLC 都直接接入 420ma 信号，而热电阻和热电偶一般都带有变送器才
4、接入 PLC。要是接入 DCS 的话就不必用变送器了！热电阻是 RTD 信号，热电偶是 TC 信号！五、PLC 也有热电阻模块和热电偶模块，可直接输入电阻和电偶信号。六、热电偶有 J、T、N、 K、S 等型号，有比电阻贵的，也有比电阻便宜的，但是算上补偿导线，综合造价热电偶就高了。热电阻是电阻信号,热电偶是电压信号。七、热电阻测温原理是根据导体（或半导体）的电阻随温度变化的性质来测量的，测量范围为负00500 度，常用的有铂电阻(Pt100、Pt10)、铜电阻 Cu50（负 50-150 度） 。热电偶测温原理是基于热电效应来测量温度的，常用的有铂铑铂（分度号 S，测量范围 01300 度）
5、、镍铬镍硅（分度号 K，测量范围 0900 度） 、镍铬 康铜（分度号 E，测量范围 0600 度） 、铂铑30铂铑 6（分度号 B，测量范围 01600 度） 。PT100 热电阻分度表(2010-05-31 23:09:26)0 1 2 3 4 5 6 7 8 9温度 电阻值（）-200 18.52-190-180-170-160-15022.8327.1031.3435.5439.7222.4026.6730.9135.1239.3121.9726.2430.4934.7038.8921.5425.8230.0734.2838.4721.1125.3929.6433.8638.0520.
6、6824.9729.2233.4437.6420.2524.5428.8033.0237.2219.8224.1128.3732.6036.8019.3823.6827.9532.1836.3818.9523.2527.5231.7635.96-140-130-120-11043.8848.0052.1156.1943.4647.5951.7055.7943.0547.1851.2955.3842.6346.7750.8854.9742.2246.3650.4754.5641.8045.9450.0654.1541.3945.5349.6553.7540.9745.1249.2453.3440
7、.5644.7048.8352.9340.1444.2948.4252.52-100 60.26 59.85 59.44 59.04 58.63 58.23 57.82 57.41 57.01 56.60-90-80-70-60-5064.3068.3372.3376.3380.3163.9067.9271.9375.9379.9163.4967.5271.5375.5379.5163.0967.1271.1375.1379.1162.6866.7270.7374.7378.7262.2866.3170.3374.3378.3261.8865.9169.9373.9377.9261.4765.
8、5169.5373.5377.5261.0765.1169.1373.1377.1260.6664.7068.7372.7376.73-40-30-20-10084.2788.2292.1696.09100.0083.8787.8391.7795.6999.6183.4887.4391.3795.3099.2283.0887.0490.9894.9198.8382.6986.6490.5994.5298.4482.2986.2590.1994.1298.0481.8985.8589.8093.7397.6581.5085.4689.4093.3497.2681.1085.0689.0192.9
9、596.8780.7084.6788.6292.5596.48010203040100.00103.90107.79111.67115.54100.39104.29108.18112.06115.93100.78104.68108.57112.45116.31101.17105.07108.96112.83116.70101.56105.46109.35113.22117.08101.95105.85109.73113.61117.47102.34106.24110.12114.00117.86102.73106.63110.51114.38118.24103.12107.02110.9011
10、4.77118.63103.51107.40111.29115.15119.015060708090119.40123.24127.08130.90134.71119.78123.63127.46131.28135.09120.17124.01127.84131.66135.47120.55124.39128.22132.04135.85120.94124.78128.61132.42136.23121.32125.16128.99132.80136.61121.71125.54129.37133.18136.99122.09125.93129.75133.57137.37122.47126.
11、31130.13133.95137.75122.86126.69130.52134.33138.13100110120130140138.51142.29146.07149.83153.58138.88142.67146.44150.21153.96139.26143.05146.82150.58154.33139.64143.43147.20150.96154.71140.02143.80147.57151.33155.08140.40144.18147.95151.71155.46140.78144.56148.33152.08155.83141.16144.94148.70152.461
12、56.20141.54145.31149.08152.83156.58141.91145.69149.46153.21156.95150160170180190157.33161.05164.77168.48172.17157.70161.43165.14168.85172.54158.07161.80165.51169.22172.91158.45162.17165.89169.59173.28158.82162.54166.26169.96173.65159.19162.91166.63170.33174.02159.56163.29167.00170.70174.38159.94163.
13、66167.37171.07174.75160.31164.03167.74171.43175.12160.68164.40168.11171.80175.49200210220230240175.86179.53183.19186.84190.47176.22179.89183.55187.20190.84176.59180.26183.92187.56191.20176.96180.63184.28187.93191.56177.33180.99184.65188.29191.92177.69181.36185.01188.66192.29178.06181.72185.38189.021
14、92.65178.43182.09185.74189.38193.01178.79182.46186.11189.75193.37179.16182.82186.47190.11193.74250260270280290194.10197.71201.31204.90208.48194.46198.07201.67205.26208.84194.82198.43202.03205.62209.20195.18198.79202.39205.98209.56195.55199.15202.75206.34209.91195.91199.51203.11206.70210.27196.27199.
15、87203.47207.05210.63196.63200.23203.83207.41210.98196.99200.59204.19207.77211.34197.35200.95204.55208.13211.70300310320330340212.05215.61219.15222.68226.21212.41215.96219.51223.04226.56212.76216.32219.86223.39226.91213.12216.67220.21223.74227.26213.48217.03220.57224.09227.61213.83217.38220.92224.452
16、27.96214.19217.74221.27224.80228.31214.54218.09221.63225.15228.66214.90218.44221.98225.50229.02215.25218.80222.33225.85229.37350360370380390229.72233.21236.70240.18243.64230.07233.56237.05240.52243.99230.42233.91237.40240.87244.33230.77234.26237.74241.22244.68231.12234.61238.09241.56245.02231.47234.
17、96238.44241.91245.37231.82235.31238.79242.26245.71232.17235.66239.13242.60246.06232.52236.00239.48242.95246.40232.87236.35239.83243.29246.75400410420430440247.09250.53253.96257.38260.78247.44250.88254.30257.72261.12247.78251.22254.65258.06261.46248.13251.56254.99258.40261.80248.47251.91255.33258.742
18、62.14248.81252.25255.67259.08262.48249.16252.59256.01259.42262.82249.50252.93256.35259.76263.16245.85253.28256.70260.10263.50250.19253.62257.04260.44263.84450460470480490264.18267.56270.93274.29277.64264.52267.90271.27274.63277.98264.86268.24271.61274.96278.31265.20268.57271.94275.30278.64265.53268.
19、91272.28275.63278.98265.87269.25272.61275.97279.31266.21269.59272.95276.30279.64266.55269.92273.29276.64279.98266.89270.26273.62276.97280.31267.22270.60273.96277.31280.64500510520530540280.98284.30287.62290.92294.21281.31284.63287.95291.25294.54281.64284.97288.28291.58294.86281.98285.30288.61291.912
20、95.19282.31285.63288.94292.24295.52282.64285.96289.27292.56295.85282.97286.29289.60292.89296.18283.31286.62289.93293.22296.50283.64286.85290.26293.55296.83283.97287.29290.59293.88297.16550560570297.49300.75304.01297.81301.08304.34298.14301.41304.66298.47301.73304.98298.80302.06305.31299.12302.38305.
21、63299.45302.71305.96299.78303.03306.28300.10303.36306.61300.43303.69306.93580590307.25310.49307.58310.81307.90311.13308.23311.45308.55311.78308.87312.10309.20312.42309.52312.74309.84313.06310.16313.39600610620630640313.71316.92320.12323.30326.48314.03317.24320.43323.62326.79314.35317.56320.75323.94327.11314.67317.88321.07324.26327.43314.99318.20321.39324.57327.74315.31318.52321.71324.89328.06315.64318.84322.03325.21328.38315.96319.16322.35325.53328.69316.28319.48322.67325.84329.01316.60319.80322.98326.16329.32650660329.64332.79329.96 330.27 330.59 330.90 331.22 331.53 331.85 332.16 332.48
