ennoLogic eM870M Insulation Multimeter
Function Descriptions
32
3.2.9 DC and AC mA Current Measurement
To measure DC and AC currents in the mA range of 0.01mA ~ 500mA, set up the meter as shown in Figure 3-9:
1.
Turn on the power switch and set the rotary switch to position .
2.
Connect the red and black test leads to the
mA/µA
and
COM
terminals respectively.
3.
Press the
SELECT
key to select
DC mA
or
AC mA
measurement mode.
4.
Turn off power to the measured circuit and discharge all high voltage capacitors.
5.
Disconnect (break) the circuit path to be tested.
6.
Connect or touch the black probe to the negative side of the break and connect or touch the red probe to the positive side of
the break. (Reversing the leads will give a negative reading, but will not damage the meter.)
7.
Turn on power to the circuit; then read the display.
By pressing the
RANGE
key, it is possible to select a desired range
manually. The display will show what range is currently active, keep pressing the
RANGE
key to cycle through the
available ranges. If the meter displays OL while in manual range mode, it is necessary to select a larger range.
8.
Turn off power to the circuit and discharge all high voltage capacitors. Remove the meter and restore the circuit to normal
operation.
mA
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