3B Sientific U17450 Foglio di istruzioni - Pagina 2

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lower measurement range.

• Before using the device, check the

housing and the measurement

cables for any damage.

• Do not conduct measurements in

a damp environment. Workplace,

hands, shoes and floor must be

dry.

• Before opening the housing all

measurement leads are discon-

nected from the device.

2. Description, technical data

Active analog multimeter with a

slide switch for selection of the op-

erating mode and a rotary switch to

select the measurement range as

well as a scale with the mirrored

background for parallax-free read-

ings with a zero-point adjustable to

the center or the left of the scale.

By adjusting the electrical zero-point

to the center of the scale bipolar DC

voltage and current measurements

can be conducted without worrying

about polarity. The device is ex-

tremely robust in terms of load ca-

pacity and is equipped with excel-

lent overload protection due to its

two anti-parallel diodes as well as

moving coil movement which is not

sensitive to external electromagnet-

ic fields. The safety connection sock-

ets offer protection against acciden-

tal touch contact. After approx. 45

mins the battery is automatically

switched off. The power can be re-

established by turning off and on

using the slide switch for the oper-

ating mode. The robust plastic hous-

ing and the spring-connected bear-

ing jewels of the movement guar-

antee protection against damage

caused by mechanical stress.

Measurement ranges:

Voltage measurement:

Meas. range Internal resistance

100 mV

10 MΩ

300 mV

10 MΩ

1 V

10 MΩ

3 V

10 MΩ

10 V

10 MΩ

100 V

10 MΩ

300 V

10 MΩ

Meas. range Internal resistance

3 V

1 MΩ

10 V

1 MΩ

30 V

1 MΩ

100 V

1 MΩ

300 V

1 MΩ

Current measurement AC/DC:

Meas. range

Voltage drop

0.1 mA

55 mV

1 mA

55 mV

10 mA

55 mV

100 mA

55 mV

1 A

53 mV

3 A

51 mV

Accuracy: DC class 2; AC class 3

Effective variables and nominal op-

erating ranges:

Temperature 0 – 40° C: ± 2% / K

Frequency for all measurement

ranges:

±2.5% at 30 Hz up to

1.5 kHz ± 5% at 1.5 kHz

up to 3 kHz

Reference conditions:

Ambient temperature: +23° C ± 2 K

Frequency: 50 to 60 Hz

Waveform: Sinusoidal