除此之外还有利用差动变压器和扰曲线应变计的电感变换方式，以及变电阻式压力变送器。
Besides there is also some alternatives such as an inductance conversion using differential transformer and space curve deformeter and variable resistance pressure transmitter.
试验结果表明：利用铂电阻对热膜风速计进行温度自动校正取得了较为理想的效果。
The experiment results show that the HFA which USES the platinum resistance as temperature automatic calibration could obtain an ideal effect.
与数字多用表不同，微欧姆计没有内部电阻器(RS)，所以四条引线都要连接才能进行测量。
It doesn't have the internal resistors (rs), as in the DMM, so all four leads must be connected to make a measurement.
所以需要使用具有高输入电阻的电压表，例如静电计。
Therefore, a voltmeter with high input resistance, such as an electrometer, is required.
因此谨慎的做法是定期地用静电计欧姆计来测量测试夹具和电缆的绝缘电阻，以保证其完整性。
Therefore, it's prudent to measure the insulation resistance of the test fixtures and cables periodically with an electrometer ohmmeter to ensure their integrity.
在测试电路中，高绝缘电阻是成功地进行静电计测量的首要要求之一。
High resistance insulation in the test circuits is one of the first requirements of making successful electrometer measurements.
为了监测输出电压，将一个伏特计与负载电阻并联在一起。
To monitor the output voltage, a voltmeter is connected in parallel with the load resistance.
图2 - 24示出静电计或皮安计的过载保护电路，其中包括一个电阻器和两个二极管(1n3595)。
Figure 2-24 shows a protection circuit for an electrometer ammeter or picoammeter, consisting of a resistor and two diodes (1n3595).
如果负载电阻被直接连接到伏特计的输入端子，通过继电器触点的电流会产生电压降，测得的电池电压将存在误差。
If the load resistor was connected directly across the voltmeter input terminals, the current through the relay contacts would cause a voltage drop and the measured cell voltage would be in error.
表2-3给出了典型的反馈安培计在各种测量范围内最小的源电阻推荐值。
Table 2-3 summarizes minimum recommended source resistance values for various measurement ranges for a typical feedback ammeter.
注意，这种测量方法是两线电阻测量，而使用静电计电压表和外部电流源则可以进行四线测量。
Notice that this is a two-wire resistance measurement compared to using the electrometer voltmeter and external current source, which can make a four-wire measurement.
这个小的电阻值通常用数字多用表或者微欧姆计来测量。
This small resistance is normally measured with a DMM or a micro - ohmmeter.
有些静电计和皮安计具有内置的电压源，能够自动地计算出未知电阻。
Some electrometers and picoammeters have voltage sources built into the instrument and automatically can calculate the unknown resistance.
电阻器（RL）是电流限制电阻器，用来保护开关和静电计不受大电流的损害。
The resistors (RL) are current limiting resistors used to protect the switches and electrometer from high current.
由于安培计上的电压降可以忽略，所以所有的测试电压都出现在电阻R上。
Since the voltage drop across the ammeter is negligible, essentially all the test voltage appears across R.
采用恒流法，可以使用静电计电压表和电流源或者只使用静电计欧姆计来测量高电阻。
High resistance measurements using the constant-current method may be made using either an electrometer voltmeter and current source or just an electrometer ohmmeter.
图2 - 39所示为静电计和由电压源及电阻器串联组成的电流源相连接。
Figure 2-39 shows an electrometer connected to a current source that consists of a voltage source in series with a resistor.
然而，有的静电计和皮安计内部装有电压源，能够直接测量电阻。
Some electrometers and picoammeters, however, have a built-in voltage source and are capable of measuring the resistance directly.
图2-33示出静电计欧姆计测量电阻（R）的情况。
Figure 2-33 shows the electrometer ohmmeter measuring a resistance (R).
同时分析了应变环中电阻应变计长度对测试灵敏度的影响。
The influence of resistance strain gauge length in strain-ring on measuring sensitivity is analysed as well.
本文还介绍了一种根据实际情况把电位计和固定电阻结合的方法，提高了电位计在电路中的精度。
It also introduces a method according to the actual situation to put a fixed resistance combination of potentiometer, and it improved the accuracy of circuit.
在电阻应变计的位置布局中，利用了空间对称结构形式，从而实现了信号的加强、补偿以及多通道冗余功能。
The reinforcement and compensation and multiple channel redundancy of signals are realized by using space symmetric structure of resistance strain gauges.
在此方法中，恒压源(V)与未知电阻(R)和安培计(IM)相串联。
In this method, a constant voltage source (v) is placed in series with the unknown resistor (r) and an ammeter (IM).
静电计欧姆计的电流激励(IR)流过未知电阻(RS)，然后测量dut上的电压(VM)。
Here, an electrometer ohmmeter is forcing a current (IR) through the unknown resistance (RS) and then measuring the voltage (VM) across the DUT.
DUT的源电阻会影响反馈安培计的噪声性能。源电阻降低，安培计的噪声增益就增加。
The source resistance of the DUT will affect the noise performance of a feedback ammeter. As the source resistance is reduced, the noise gain of the ammeter will increase.
本文采用大子样、小子样抽样理论的数理统计方法，评定电阻应变计灵敏系数的精度等级。
The rank of accuracy of electric resistance strain gage factor is evaluated according to the sampling theory of large samples or small samples.
本文采用大子样、小子样抽样理论的数理统计方法，评定电阻应变计灵敏系数的精度等级。
The rank of accuracy of electric resistance strain gage factor is evaluated according to the sampling theory of large samples or small samples.
应用推荐