GMC-I Gossen-Metrawatt GmbH
11
GB
7
Voltage Measurement
➭
Set the rotary switch to V
, V
or V
depending upon the
voltage to be measured.
➭
Connect the measurement cables as shown. The “
⊥
” jack should
be grounded.
Note!
The 30 mV
and 300 mV
meas. ranges can only
be selected manually with the
AUTO |MAN
key!
In the 600 V range, an intermittent acoustic signal
sounds alarm if the measurement value exceeds the
measuring range upper limit value.
Zero Balancing in the 30 mV
Measuring Range
Zero balancing is accomplished in the 30 mV
range as follows:
➭
Connect the measurement cables to the instrument, and con-
nect the free cable ends to one another.
➭
Briefly press the multifunction key
FUNC
after the measuring range
has been selected.
The instrument acknowledges zero balancing with an acoustic sig-
nal and “
00
.
00
” (+ 1 digit) appears at the LCD with a blinking deci-
mal point. The voltage which was displayed at the moment the key
was activated serves as a reference value (max.
±
200 digits). It is
automatically subtracted from subsequently measured values.
Zero balancing can be deleted:
– by pressing and holding the multifunction key
FUNC
, after which
deletion is acknowledged with a twice repeated acoustic signal.
– by switching the instrument off.
7.1
METRA HIT 16I/L: 1 M
Ω
Input Impedance
The measuring instrument is equipped with a V
1M
Ω
selector switch
position with an input impedance of approx. 1 M
Ω
specifically for
electricians. This reduces incorrect measurement results caused by
capacitive coupling during voltage measurement in electrical power
networks to a minimum.
7.2
METRA HIT 16T: Terminal Assignments
Caution!
!
No connections
may be made to
jacks b and j
, in order to
avoid potential transfer from the
⊥
jack.
Voltage Measurement
600V
V
F
°
C
V
1M
M
1000V=ISO
600V
V
F
°
C
b
j
a
– (+)
~
+ (–)
~
– (+)
~
+ (–)
~
METRA HIT 16I/L
METRA HIT 16T
