Current Measurements - Promax PD-181 Manual De Instrucciones

For DC voltage readings, the RED lead tip should be connected to
the positive side of the circuit, the BLACK lead to the negative side.
A minus sign on the left hand side of the LCD will appear if the
leads are connected the other way round.

4.4 Current measurements

These are made in series with the test circuit. All the current to be
measured flows through the multimeter.
WARNING
Do not attempt to measure currents in high energy circuits
capable of delivering greater than 600V. Since the fuse is rated at
600V damage or injury could occur. The 20A input terminal is
protected by a 20A/600V high energy, fast blow fuse. The mA
input terminal is protected by a 2A/600V fast blow fuse.
Do not exceed the limits of each current input terminal. This is
20A (maximum time limit of 30 seconds for currents greater
than 10A) for the 20A terminal and 2000mA for the mA
terminal.
All current rages are fused. If a current greater than 20A on the 20A
range or greater than 2000mA on all other ranges flows, the fuse
will blow causing an open circuit between the current measuring
terminals.
1. Insert the BLACK test lead in the COM input terminal.
2. For measuring currents less than 2000mA, connect the RED test
lead to the mA input terminal. For measuring currents between 2A
and 20A connect the RED test lead to the 20A terminal.
3. Select the function and the scale wished by means of the rotary
selector. With the button AC/DC select the type of measurement to
realize: AC or DC.
NOTE: If the 20A range is selected then the 20A input terminal
must be selected in step 2. If the µA, mA ranges is
selected the mA input terminal must be selected in step 2.
4. Switch OFF or disconnect the circuit to be measured from all
power sources, connect the multimeter in series with the conductor
in which the current to be measured flows.
5. Switch ON the circuit. Note the reading. If the indication of
overflow appears, select a top scale.
6. Switch OFF or disconnect the circuit and remove the test leads
from multimeter.
10/06 - 10 - PD-181