ELECTUS CATALOGUE PDF

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Features by the meter Learn about the more advanced functions of this toolbox essential. Here are 10 sophisticated features found on high-end and specialised units. See below for further advice on choosing a DMM.

Capacitance is calculated using an LCR multimeter which also tests for inductance by charging a capacitor with a known voltage. Make sure you safely discharge the capacitor before testing! Clamp metering is a way of measuring the current flowing through a single wire or cable by clamping sensor jaws around the conductor, instead of touching it with a probe. Environment sensing features are included in a multifunction unit that measures ambient light, sound level, temperature and humidity. Measurement category is referred to as Cat I through Cat IV , and is a classification of what level of live voltage the multimeter is suitable for assessing.

Network cables can be tested using a combination multimeter which includes a remote terminator for checking cross-connect, continuity and other parameters of Ethernet cables.

Non-contact voltage detection shows you if there is live wiring near the unit , and is often used as a safety feature. True RMS multimeters do the hard work for you. They have already calculated the average RMS voltage giving you the true value, regardless of whether the waveform is a pure sine wave or a more irregular shape.

So outside of just what it measures, what makes these meters different? Accuracy All meters are only as accurate as the electrical circuits within them allow. Essentially all meters transform current, capacitance, resistances, etc - into a measureable voltage that can be interpereted by the multimeter and displayed as a digital readout.

The circuits that do this conversion are prone to variation and tolerance as all circuits are. The accuracy of all meters is outlined for each one. Ranging Autoranging was once a luxury, but now fairly standard when it comes to features. This saves time when measuring relatively unknown sources, but also means you get the most information from the meter. In a real-world example, take a humble AA battery.

But 1. Not very useful! So autoranging when used will automatically switch it to an appropriate range and give you the most useful information. Non-Contact Voltage Detection This is primarily a safety feature. It gives you a very fast way to determine if a wire is live.

Some meters use "average" methods, others use True RMS. Both will give a relatively accurate result for a nice and clean, pure sine wave or at least, regular shape waveform signal. A True RMS meter uses this superior calculation method to provide you with a more accurate value, regardless of the shape of the waveform.

IP Ratings Like all devices, this is only useful if you require it, but critical if you do. If your multimeter is going to live on your electronics bench, the most you have to worry about is a spilled coffee. Clampmeters This is not a feature, but a type of measurement.

Essentially they use a special sensing method to detect voltages. Ultimately, all meters are good at what they do. Select one with appropriate features and it will provide you many years of service.

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