Baltech TL-0215C Manual de instrucciones - Página 8

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3.2.2 External examination

Before you start using the device, it is necessary to carry out

an external examination of the device concerning damages

and contamination of the lens and display. If there is

contamination, it is necessary to perform maintenance of

the device in accordance with paragraph 4 of this operation

manual. If there are mechanical damages, make sure, that

they will not influence readings, or send the device for repair.

Preparation consists of evaluation of emissivity of controlled

objects and to enter these values into the device. The

e m i s s i v i ty i s d e t e r m i n e d b y m e a n s o f t h e t a b l e o r

experimentally (paragraph 3.3.4 of this operation manual).

If necessary, one can perform modification of a controlled

surface for the purpose of emissivity increasing.

It is also necessary to make sure, that the controlled spot

size is smaller, than the size of a controlled object at a

defined distance to the object.

3.2.4 Selection of measurement units and laser

pointer

To select measurement units (°C or °F) and switch on (off)

the laser pointer, open the cover in the device handle (figure

3.2) and set the corresponding switches to a proper

position.

If the device screen displays «

device handle (figure 3.2) and change the battery. You can

use both alkaline battery, type 6F22 and nickel-cadmium

battery or nickel metal hydride battery of the same size.

», open the cover in the