4.2 Switching Measurement Currents (100 m to 100 )
66
Power equivalent to the resistance value × (measurement current)
2
will be applied to the
measurement target. If there are any of the following concerns, depending on the level of
the measurement current, set the measurement current to low.
• The measurement target may melt (such as a fuse or inflator).
• The measurement target may heat up, causing a change in resistance.
• The measurement target may be magnetized, causing a change in inductance.
See: "3.1 Checking the Measurement Target" (p.48)
Because the detection voltage decreases when the measurement current is Low, measure-
ment is more susceptible to external noise. If measured values fail to stabilize, take steps to
address the noise, referring to "Appendix 7 Unstable Measured Values" (p. A12). The fol-
lowing four steps are particularly effective in this situation:
• Shield the measurement cable (connect the shielding to the instrument’s GUARD termi-
nal).
• Twist the measurement cables together.
• Shield the measurement target (connect the shielding to the instrument’s GUARD termi-
nal).
• Decrease the measurement speed or use the averaging function.
4.2 Switching Measurement Currents
(100 m to 100 )
Range
High Low
Measurement
current
Maximum power
in measurement
range
Measurement
current
Maximum power
in measurement
range
10 m 1 A 12 mW −
100 m 1 A 120 mW 100 mA 1.2 mW
1000 m 100 mA 12 mW 10 mA 120 W
10 10 mA 1.2 mW 1 mA 12 W
100 10 mA 12 mW 1 mA 120 W
1000 1 mA 1.2 mW −
10 k 1 mA 12 mW −
100 k 100 A 1.2 mW −
1000 k 10 A 120 W −
10 M 1 A 12 W −
100 M
(high-
precision mode: ON)
100 nA 1.2 W −
100 M, 1000 M
(high-
precision mode: OFF)
1 A or less 1.3 W −
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