UNI-T UT60A Manual do Utilizador descarregar pdf (Página 11)

According to the specifications, maximum range is about 10 m (32.8 ft) in open air. Inside, the display

module lost signal at a distance of about 6 m (20 ft) and with two thick concrete floors between the

base station and the display module, so range is satisfactory.

The meter disassembled: safety features

The most important feature of a multimeter is, of course, its safety. With a voltage range of 1000 V

and a current range of 10 A, measurements can be quite dangerous. And what if the operator makes

an error, and the meter is accidentally exposed to an even higher voltage or current? A good

multimeter has one or more fuses inside to prevent damage to the meter, and a well-designed circuit

layout so no arcing will occur (up to a certain extent, of course). But, before I open up the Fluke 233,

let us look at the outside. Fluke has included a warning symbol on the display that lights if a

dangerous voltage is detected. The base station is also equipped with a warning light that has the

same function, so you are still warned if the display module is removed. When you turn on the

meter, the light blinks for a second, so you can verify it is still working. Fluke has thought this out

extremely well.

Now, let’s remove the cover of the base station, which is held together by four crosshead screws.

Inside, you can see a big, fat F11 fuse, which is rated for 1000 V and has an interrupt rating of 17 kA.

Because the meter has only one low impedance connector, only one fuse is necessary. Fluke sells

replacement fuses for 9.00 USD in their online shop. Although the fuse is quite expensive, you will

only need to replace it if you make an error while measuring.

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UNI-T UT60A Manual do Utilizador Página 11