Indu-Sol EMCheck MWMZ II Mesh Resistance Measuring Clamp

Benefits of the Mesh Resistance Measuring Clamp Indu-Sol EMCheck MWMZ II

• Rugged mesh resistance measuring clamp with OLED.
• Measurement also for conductors which already carry current.
• Wide clamp opening up to 35 mm.

Indu-Sol EMCheck MWMZ II Mesh Resistance Measuring Clamp

The EMCheck MWMZ II is a mesh resistance measuring clamp for applications, where intuitive statements on the quality of the installed shield and earth measures are not enough. The clamp consists of two coils: The first coil induces a voltage of a defined level and with a defined frequency (50, 60, 128 or 2083 Hz). The second coil measures the current induced by coil one in the adjusted frequency range. The ration of these two values is used to find and display the alternating current resistance (impedance). The measurement is made without interruption and can also be carried out on conductors which already carry current during normal operation. If the operating currents are in the frequency range of the clamp and thus falsify the measurement result, the clamp will indicate a "noise" warning. The measuring clamp can be used for:

• Measurement of shield loop resistances, for example of bus cables or measuring system cables. Note: Good shield loop resistances should be in a range up to approx. 0.6 Ω. An adequately low shield loop resistance is a basic requirement for a good shield effect.
• Measurement of the PE cables laid pursuant to DIN EN 50310 to achieved good equipotential bonding. Note: Good PE loop resistances should be in a range up to approx. 0.3 Ω. An adequately low PE loop resistance is a basic requirement for ensuring a good signal reference potential.
• Measurement of the shield quality on the motor cable of frequency controlled motors and the resistances in the reverse current path.

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