Velleman DVM990BL Operations Instructions download pdf (Page 9)

DVM990BL VELLEMAN 8

3.2.10. Temperature

Range Resolutio

Accuracy (% reading + digits)

-20°C

1000°C

1°C

-20°C to 0°C

0°C to 400°C

400°C to 1000°C

± (5.0% of rdg + 5 digits)

± (1.0% of rdg + 3 digits)

± (2.0% of rdg + 3 digits)

Overload Protection: 250V DC or rms AC

4. OPERATING INSTRUCTIONS

4.1. DATA HOLD

If you want data hold when measuring, press "H" and it will hold the

reading. Press the button again to remove data hold.

4.2. BACK LIGHT

In poor lighting conditions, press "

" to put the back light on to make

reading easier.

NOTE:

1. An LED is the main back light source. Its operating current is large,

although the meter has a timer (the time is 5 seconds and it will switch

off automatically after 5 seconds). Frequent use of the back light will

shorten the battery life. It is better not to use the back light when not

necessary.

2. When the battery voltage is less than 7V, it will display "

However, when using the back light at the same time, "

" may

appear even if the battery voltage is more than 7V, because the

operating current is higher and the voltage will fall. You do not need to

replace the battery if this happens. In normal use (back light off), "

will not appear if the battery is good.

4.3. PREPARATION FOR MEASUREMENT

4.3.1. Switch on with the "POWER" switch. If the battery voltage is less than

7V, "

" will appear and the battery should be replaced.

4.3.2. The "

" next to the input socket means that the input voltage or

current should be less than that specified on the meter sticker in order

to protect the interior circuit from damage.

4.3.3. Select the appropriate range for the item to be measured with the

rotary switch.

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BEDIENUNGSANLEITUNG 1

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Velleman DVM990BL Operations Instructions Page 9

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