With all the resistance-temperature measurements, the use of three conductor RTD cable is recommended. The effect of ambient temperature variations on the cable is thereby minimized.

进行各种电阻温度测量时，建议使用三根导线的热电阻探测器电缆。这样就可降低环境温度对电缆的影响。

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Intrinsic safety type control cable with flame resistance PVC insulation, PVC sheath, Individual and General shielding.

阻燃聚氯乙烯绝缘，聚氯乙烯护套，分屏蔽和总屏蔽本安型控制电缆。

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However, since the cable leakage resistance (RL) is in parallel with RS, the actual measured resistance (RM) is reduced, as shown in the parallel equivalent circuit of Figure 2-34b.

然而，由于电缆泄漏电阻（RL）与RS并联，实际测量的电阻（RM）有所降低，如图2-34b的并联等效电路所示。

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