Using a Multimeter

1415 Words6 Pages
USING A MULTIMETER Health and Safety When using a multimeter many safety precautions should be took in to consider. Before connecting or disconnecting the multimeter you should deenergize and discharge the circuit completely before disconnecting or connecting the multimeter. Always connect a multimeter in series with the circuit for current measurements and in parallel for voltage measurements. Never apply power to the circuit while measuring resistance with a multimeter. When using a multimeter you will need gloves to protect your hands from any light damage. Handling Whilst you’re handling a multimeter or about to use the multimeter, you have to warn everybody around you that you’re about to use the multimeter because you could harm others. Also, whilst handling a multimeter you have to make sure that your hands, clothing, boots and gloves are dry. If the conditions are humid or damp, do not use the multimeter as this could cause a malfunction. For full safety whilst using the multimeter do not touch test leads or instrument while power is applied to the circuit under test. Be very careful when making measurements where a dangerous combination of voltages could be present, such as in a radio-frequency amplifier. Settings The display of a multimeter will be digital. Showing numerical values using four digits in a manner similar to a digital clock. The rotary selector switch has five different measurements positions it can be set in. two V settings, two A settings an on setting in the middle with an Omega symbol (Ω) which is the symbol to show the unit of ohms. The two V settings and the two A settings, you will realise that each pair is divided into unique markers with either a pair of horizontal lines or a dashed line with a squiggly curve over it. The V course stands for voltage while the A stands for amperage (current). The meter uses different
Open Document