Bort 91271143, Manual

9

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

hFE-Transistor measurement

•  Remove the measuring cable.
•  Set the switch on the hFE setting.
•  Find out whether this transistor is a NPN or PNP transis-

tor and connect the Emitter- (e), Basic (b) and collector- 
(c) cable to the appropriate socket in the switch gear 
panel on the front side.

•  The display shows the (approximate) hFE value for a 

basic current of 10 μA, V CE 2.8 V.

Measuring alternating current (AAC)

•  Connect the BLACK lead to the COM connector socket. 

Connect the RED lead to the «VΩmA» connector socket. 
For measurements between 200 mA and 20 A, remove 
RED lead to «20 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. The polarity of the measuring tips is not 
relevant.

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

RANGE

ACCURACY

RES.

2 mA

± 1,2% of rdg ± 3 dgt

1 μA

20 mA

10 μA

200 mA

± 2% of rdg ± 3 dgt

100 μA

20 A

± 3% of rdg ± 7 dgt

10 mA

Overload protection 0.5 A / 250-V cut-out, 20 A-range not 
protected. Frequency range: 40-1000 Hz. Display: Corrected 
centre point (corresponds to the eff ective value in a sinusoi-
dal form.)

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 meas-

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

•  The 20 A range is not protected with a fuse. Do not, 

therefore, measure for longer than 10 seconds.

Continuity test

•  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 «+».)

•  Set the FUNCTION switch on the « 

 » range and 

connectthe measuring tips to the power circuit to be 
measured.

•  If the resistance in the power circuit is lower than 50 Ω, 

the buzzer sounds.

Replacing the fuse

•  Set the switch on the OFF setting.
•  Remove the rear panel of the multimeter by loosening 

the screws.

•  Remove the defective fuse and replace it with a fuse 

of the same amperage and tripping characteristics 
(250V~F500mAL).

CAUTION!

 The device must be switched off  and the leads 

removed before opening the casing of the multimeter.

Changing battery

•  A battery symbol appears on the display if the battery is 

almost discharged.

•  Set the rotary knob on the OFF setting.
•  Remove the rear panel of the multimeter by loosening 

the screws.

•  Replace the 1 x 9 Volt battery by 1 x 6F229Volt.

CAUTION!

 The device must be switched off  and the leads 

removed before opening the casing of the multimeter.

MAINTENANCE AND CLEANING

Always remove the battery before servicing and 
cleaning of the multimeter. Never use water or 
other fl uids to clean the device.

•  Keep the instrument leads and the multimeter clean. 

Some cleaning media and solvents (petrol, thinner 
etc.) can attach or dissolve the plastic. These products 
contain benzol, trichloroethane, chlorine, aqueous am-
monia etc.

•  Clean the casing regularly using a soft piece of cloth, 

preferably after every use.

•  Remove the stubborn dirt using moist cloth. Do not use 

any solvents such as petrol, alcohol, ammoniac solution 
etc. Such substances damage the plastic parts.

DISPOSAL

Discarded electric appliances are recyclable and 
should not be discarded in the domestic waste! 
Please actively support us in conserving resources 
and protecting the environment by returning this 

appliance to the collection centres (if available).
In order to prevent the machine from damage during 
transport, it is delivered in a sturdy packaging. Most of 
the packaging materials can be recycled. Take these ma-
terials to the appropriate recycling locations. Take your 
unwanted machines to your local BORT GLOBAL LIMITED 
dealer. Here they will be disposed of in an environmentally 
safe way.