User Manual

GMC-I Gossen-Metrawatt GmbH 43
V/Hz, Ω, Temperature, and A/Hz Measurements
5.7.2 Alternating Current and Frequency Measurement,
Direct Connection, A AC and Hz
(METRAHIT E
XTRA, METRAHIT ETECH and
METRAHIT E
SPECIAL only)
➭ First disconnect supply power from the measuring circuit or
the power consumer (1), and discharge any capacitors.
➭ In accordance with the current or frequency to be measured,
turn the rotary switch to A~ or Hz.
➭ Select the desired measured quantity by briefly pressing the
FUNC | ENTER multifunction key. Each time the key is pressed,
AC
TRMS
and Hz are alternately selected, and
switching is acknowledged with an acoustic signal.
➭ Safely connect the measuring instrument (without contact
resistance) in series to the power consumer as shown.
➭ Switch supply power to the measuring circuit back on (3).
➭ 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.
➭ Disconnect supply power from the measuring circuit or the
power consumer (1) once again, and discharge any
capacitors.
➭ Remove the test probes from the measuring point and return
the measuring circuit to its normal condition.
COM mA A
~
R
x
~
R
x
1
3
2
A~
Hz
A~
Hz
003 . 50
A
AC
TRMS
050 . 10
Hz
AC
8 . 8 . 8 . 8 . 8
!
I > 10 A
!
I > 16 A
Strom
FUNC
ENTER
METRAHIT EXTRA
METRAHIT ESPECIAL
6 A / 10 A (16 A max. 30 s)
600 μA / 6 mA
60 mA / 600 mA
6 A / 10 A (16 A max. 30 s)
Measuring Ranges:
METRAHIT E
TECH
60 mA / 600 mA
6 A / 10 A (16 A max. 30 s)
Current measurement
may only be performed
with installed batteries!