Current Measurement; Continuity Test - Conrad M-4660A Bedienungsanleitung

5.2 Current Measurement

Follow these steps to measure DC or AC current:
1. Connect the black test-lead with the COM-socket (11) and the red
test-lead with the mA-socket (10), if you want to measure current to
200 mA max. and with the 20-A-Socket (9), if you want to measure
current over 200 mA to 20 A max.
2. Select with the rotary function switch the ampere position (DCA or
ACA).
3. Connect the test-leads in series with the circuit or load. (See following
drawing).
~
20
A
Attention!
Never measure currents in circuits in which voltages over 250 VDC/
VACrms could exist, this is life dangerous! Never measure currents
exceeding 20 A.
Only measure in circuits which are fused with 16 A or in which powers
exceeding 4000 VA could not exist. Current measurements of 20 A may
not last longer than 30 seconds and may only be executed in intervals
of 15 minutes.
Hint!
During AC current measurement the middle sub-display will show the
frequency of the AC voltage (in the range of 40 Hz to 400 Hz) and the
main display shows the present measurement.
During DC current measurement the three sub-displays below the main-
display are active. In the left sub-display the present reading is taken
1 second later, the middle display the reading is taken 2 seconds later
and in the right display the reading appears 3 seconds later.
When measuring current never connect the voltage terminal and the
measuring socket.

5.3 Continuity Test

With this function you can test dead leads, fuses, circuits.
Proceed as follows :
1. Connect the black test-lead with the COM-socket (11) and the red
test-lead with the V/Ω socket (12).
2. Set the rotary function switch to
test). Afterwards connect the test-lead tips to the object to be mea-
sured (all voltage must be removed).
3. If the line resistance is less than 40 Ω a test buzzer sound is emitted.
Attention!
Never measure capacitors which carry voltage, as a possible discharge
could destroy your measuring unit.
(= continuity test or diode
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