Bort 91271150, User Manual

8

RANGE

ACCURACY

RES.

2 V

± 0,8% of rdg ± 3 dgt

100 μV

20 V

1m V

200 V

10m V

750 V

± 1,2% of rdg ± 3 dgt

1 V

Input resistance 10 MΩ Frequency range 40-1000 Hz.
Overload protection AC 750 V Eff ective value or DC 1000 V 
peak value (constantly in all ranges).
Display: Corrected centre point corresponds to the eff ective 
value in a sinusoidal form.)

HINT:
•  In case the voltage range is unknown, you must set the 

FUNCTION switch in the highest measurement range 
and then reduce the range gradually if required.

•  If the fi gure «I» now appears on the display, the meas-

urand lies outside the range set. The FUNCTION switch 
must be switched to a higher range.

•  The maximum input voltage is 750 VAC eff ective value. 

Higher voltages cannot be measured.

•  Proceed extremely cautiously with the measurement of 

high voltages.

Measuring direct current (ADC)

•  Connect the BLACK lead to the COM connector socket. 

Connect the RED lead to the «VΩmA» connector socket. 
For measurements between 200mA and 10 A, remove 
RED lead to «10 A» connector socket.

•  Set the FUNCTION switch on the desired «A» setting and 

connect the leads in series to the power circuit to be 
measured. Observe correct polarity (red is + and black is 
-), otherwise the display shows a minus sign before the 
value. The technical current direction of the RED lead to 
the BLACK lead is displayed at the same time with the 
current strength.

• Read off  the value in (milli-) Ampere.

RANGE

ACCURACY

RES.

200 μA

± 0,8% of rdg ± 1 dgt

0,1 μA

2 mA

1 μA

20 mA

10 μA

200 mA

± 1,2% of rdg ± 1 dgt

100 μA

10 A

± 2% of rdg ± 1 dgt

10 mA

Overload protection 0.5 A/250-V cut-out, 10 A-range not 
protected.

HINT:
•  In case the current range is previously unknown, you 

must set the FUNCTION switch in the highest measure-
ment range and then reduce the measurement range 
gradually if required.

•  If the fi gure «I» now appears on the display, the measur-

and lies outside the set measurement range. The FUNC-
TION switch must be switched to a higher measurement 
range.

•  The 10 A range is not protected with a fuse. Do not, 

therefore, measure for longer than 10 seconds.

Measuringthe resistance (Ω Ohm)

•  Connect the BLACK lead to the «COM» connector socket 

and the RED lead to the «VΩmA» connector socket. 
(Hint: The polarity of the red lead is then «+».)

•  Setthe FUNCTION switch on the desired «Ω» measuring 

range.

RANGE

ACCURACY

RES.

200 

Ω

± 0,8% of rdg ± 3 dgt

0,1 

μ

A

200 

Ω

± 0,8% of rdg ± 3 dgt

0,1 

Ω

2 K

Ω

± 0,8% of rdg ± 1 dgt

1 

Ω

20 K

Ω

10 

Ω

200 K

Ω

100 

Ω

2 M

Ω

1 K

Ω

Overload protection 250 V DC or AC Eff ective value, for maxi-
mum 15 seconds

•  Connect the measuring tips to the components to be 

measured. Ensure that the component is not linked to 
the other components. Do not touch the measuring tips 
so as not to aff ect resistance values.

• Read off  the measured value in Ω (Ohm).
•  While measuring the resistances, current from the in-

ternal battery is used. This current consumption diff ers 
according to the set measurement range.

HINT:
•  In case the measurand exceeds the highest value in the 

set measurement range, the display shows «I». Select 
a higher measurement range. If the resistance is about 
1 MΩ and higher, the measuring device can take a cou-
ple of seconds to stabilise. This is normal in the measure-
ment of high resistances.

•  If the input is not connected, say in a broken power 

circuit, the display shows the fi gure «I». This means that 
the measurement falls outside the range.

•  In case the resistance to be measured is connected to 

a power circuit, you must switch off  the voltage before 
beginning the measurement and see that all capacitors 
are discharged.

Diodes measurement (Conducting-state voltage)

•  Connect the BLACK lead to the «COM» connector socket 

and the RED lead to the «VΩmA» connector socket. 
(Hint: The polarity of the red lead is then «+».)

•  Setthe FUNCTION switch on the 

 -range and connect 

the measuring tips to the diode to be measured. In the 
measurement of diodes or transistors, the polarity of the 
measuring tips determines whether the forward direc-
tion or the blocking direction is measured. The displayed 
value is the conducting-state voltage drop.
- The tripping current is 0.8 mA.
-  In case the measuring tips are not or wrongly con-

nected to the diode i.e. in the blocking direction, the 
display shows the fi gure I.