3B SCIENTIFIC PHYSICS 1018832 Инструктивный лист - Страница 4
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Печатать страницуΩ
Measuring
Resolu-
range
tion
200 Ω
0,1 Ω
2 kΩ
1 Ω
20 kΩ
10 Ω
200 kΩ
100 Ω
2 MΩ
1 kΩ
20 MΩ
10 kΩ
200 MΩ
100 kΩ
Accuracy is given for 1 year after calibration at
23°C ±5°C, RH<75%.
5. Description
Digital multimeter E is a robust, battery operated
multimeter with a 3½-digit LCD display for meas-
uring voltage, current and resistance as well as
for diode and hFE gain testing.
All measurement ranges are selected by means
of a rotary dial. All measurement ranges are pro-
tected against overload.
The meter is equipped with a hold function, neg-
ative polarity indication, over range indication and
low battery indication.
On the backside there is a fold out prop for stand-
ing the device on a table.
6. Operation
Note: The multimeter switches into an indetermi-
nate state if the Hold button is activated (Hold
function button (8) pressed). After it is switched
on, the display will then show "1.666" (where the
position of the decimal point is dependent on the
selected measuring range). If this case should
arise, deactivate the Hold function while the
equipment is switched on (deactivate Hold func-
tion by pressing the button one more time).
6.1 Method of measurement
Warning! Dangerous voltages may
be present at the input terminals
and may not be displayed.
Accuracy
±(1.0% + 10 di-
gits)
±(1.0% + 4 digits)
±(1.0% + 10 di-
gits)
±(5.0% + 10 di-
gits)
6.1.1
Voltage measurement
Set the measurement range dial at the re-
quired position
Connect the black test lead to the measure-
ment socket "COM" and the red test lead to
the "V" socket. The meter is connected paral-
lel to the measuring point. The polarity of the
red lead connection will be indicated at the
same time as the voltage when making a DC
measurement.
Note
lf the voltage to be tested is unknown before-
hand, set the measurement range dial to the
highest range and work down.
When only the figure "1" is displayed, over
range is being indicated and the measure-
ment range dial has be set to a higher range.
Never measure voltages higher than 600 V.
6.1.2
Current measurement
Set the measurement range dial at the re-
quired position
Connect the black test lead to the measure-
ment socket "COM" and the red test lead to
the " A/Ω/hFE" socket for measurements up
to 2 A. For measurements over 2 A connect it
to the socket "10 A". The meter is connected
in series to the measuring object. The polarity
of the red lead connection will be indicated at
the same time as the current when making a
DC measurement.
Note
lf the current to be tested is unknown before-
hand, set the measurement range dial to the
highest range and work down.
When only the figure "1" is displayed, over
range is being indicated and the measure-
ment range dial has be set to a higher range.
Limit measurements in the 10-A range to
max. 10 s.
4
or
.
or
.