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1. Description
The Tentech MPK-204e high-current micro-ohmmeter is a portable,
microprocessor-controlled instrument, used to accurately measure very
low contact resistances of breakers and switches, busbars, transformers
winding and engines, etc, with test currents from 1 mA to 200 A.
• Kelvin architecture (four-terminal method).
• Digital reading, alphanumeric display.
• Up to 4½ digits readings.
• Powered by rechargeable battery or mains supply.
• 0.1 µΩ resolution.
• 200 Ω maximum reading.
• Overheating protection.
2. Operating principle
This device uses the Kelvin Bridge architecture, with four terminals,
avoiding testing leads resistance to cause error during measurement.
Test current may be chosen by the operator and the reading is obtained
by comparison through internal high-stability standards. The result
appears in the alphanumeric display which is very easy to read.
3. Operating instructions
3.1. Use of test probes
Select the suitable test probes for the measurement you intend to perform
taking into account the current chosen for the test (Cables for up to 10 A
or 200 A). If you use the cables corresponding to 200 A, please verify that
the test probes are tightly fit in their corresponding connectors.
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