Operation Manual

GMC-I Messtechnik GmbH 41
V/Hz, Ω, Temperature, and A/Hz Measurements
5.7.1 Direct and Pulsating Current Measurement, Direct Connection,
A DC and A (DC+AC)
(METRAHIT⏐X-
TRA⏐OUTDOOR⏐TECH⏐PRO only)
Ð First disconnect supply power from the measuring circuit or
the power consumer (1), and discharge any capacitors.
Ð In accordance with the current to be measured, turn the rotary
switch to A or A .
Ð Select the current type appropriate for the measured quantity
by briefly pressing the FUNC | ENTER multifunction key. Each
time the key is pressed, the instrument is switched back and
forth between A DC and A (DC + AC)
TRMS
, which is indicated
by means of an acoustic signal. The current type is indicated at
the LCD by means of the DC or the (DC+AC)
TRMS
symbol.
Ð Safely connect the measuring instrument (without contact
resistance) in series to the power consumer (2) as shown.
Ð Switch supply power to the measuring circuit back on (3).
Ð Read the display. Make a note of the measured value if the
instrument is not being operated in the memory mode or the
transmission mode.
Ð Disconnect supply power from the measuring circuit or the
power consumer (1) once again, and discharge any
capacitors.
Ð Remove the test probes from the measuring point and return
the measuring circuit to its normal condition.
COM mA A
V
Temp
Ω
~
R
x
~
R
x
1
3
2
I > 10 A
!
A
A
003.50
A
DC
003.50
A
DC
AC
TRMS
A
A
8 . 8 . 8 . 8 . 8
!
I > 16 A
Current
Measuring Ranges:
Current measurement
may only be performed
with installed batteries!
FUNC
ENTER
METRAHIT⏐X-TRA/OUTDOOR
METRAHIT⏐PRO
1 A / 10 A (16 A max. 30 s)
100 μA / 1 mA
10 mA / 100 mA
1 A / 10 A (16 A max. 30 s)
METRAHIT⏐TECH
10 mA / 100 mA
1 A / 10 A (16 A max. 30 s)