恒温水浴的组装及其性能测试

概要：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

恒温水浴的组装及其性能测试,http://www.dxs51.com

　　实验目的

　　了解恒温水浴的构造与工作原理，学会恒温水浴的装配技术、

　　测绘恒温水浴的灵敏度曲线

　　掌握贝克曼温度计的调节技术和使用方法

　　仪器与试剂

　　2升大烧杯贝克曼温度计

　　100℃温度计加热器

　　水银接触温度计继电器

　　磁力搅拌器调压变压器

　　恒温水浴的组装及其性能测试

　　实验者周进 陈小辉

　　实验时间2000.5.15

　　室温 ℃22.6

　　大气压Pa101.6

　　10.6100.4100.6200.6150.5820.5320.4900.4400.3850.3320.2800.218

　　20.5750.7650.6200.6800.6500.5500.7350.6050.7410.6580.5200.705

　　30.6200.5450.6100.5520.5050.5900.5000.5850.4950.555

　　

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　　影响恒温浴灵敏度的因素主要有哪些?试作简要分析.

　　答: 影响灵敏度的因素与所采用的工作介质、感温元件、搅拌速度、加热器功率大小、继电器的物理性能等均有关系。

　　如果搅拌速度不定时，则恒温水浴的温度在所设定的温度浮沉比较大，所测灵敏度就低。

　　如果加热器功率不适中，就不易控制水浴的温度，使设定的温度上下波动较大，其灵敏度就低。

　　若贝克曼温度计精密度较低，在不同时间记下的温度变化值相差就大，即水浴温度在所设定温度下波动大，其灵敏度也就低，

　　接触温度计的感温效果较差，在高于所设定的温度时，加热器还不停止加热，从而使得浴槽温度恒高不降，这样在不同的时间内记录水浴温度偏高，灵敏度就低。

　　欲提高恒温浴的控温精度(或灵敏度),应采取些什么措施?

　　答: 要提高恒温浴的灵敏度，就要针对影响因素的精密度。

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