“Wireless” measuring is always safer …
Clamp multimeters are not only practical, but also highly safe at measuring a current. One of them is also the compact Voltcraft VC-521.
Clamp multimeter can be marked as an “old known thing”. AT the same it can be said, that this widely spread type of measuring devices is still more compact and new models are usually able to measure all basic parameters.
From this point of view, the VC-521 can replace a common multimeter, as it´s able to measure voltage, current by means of jaws (even the DC!), frequency, duty cycle, capacity (already from nF), resistance, temperature, diodes and continuity. A useful additional feature is also a non-contact detection of AC voltage (100-600V). User comfort is also increased by functions HOLD and REL. The REL function can serve for a classic measuring but also to null the offset at measuring of DC currents caused by a residual magnetism in the jaws – this can temporarily appear after measuring of high DC currents or also by influence of external magnetic field (magnet, loudspeaker,…).
Plastic lug on one of the jaws is in fact a sensor for non-contact AC voltage detection. This lug also enables easier “separation” of a desired wire from other wires – for example at measuring in a distribution box. Maximum reading is 3999, what´s naturally better than classic „1999″.
For more detail: “Wireless” measuring is always safer …
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