GMC-I Gossen-Metrawatt GmbH
67
GB
dB Ranges
AUTO SELECT:
Automatic Measured Quantity Recognition
Overload at AUTO SELECT max. 500 V DC AC
TRMS
sine.
7)
At 0
°
... + 40
°
C
8)
Values of less than 100 digits are suppressed,
16 ... 45 ... 65 Hz ... 100 kHz sine. See page 68 for influences
9)
12 A – 5 min, 16 A – 30 s
10)
When “zero balancing” function is active, ZERO display
11)
Range
300 mV
:
U
E
= 50 mV
eff/rms
. . . 300mV
eff/rms
3
V
:
U
E
= 0,3
V
eff/rms
. . .
3 V
eff/rms
30
V
:
U
E
=
3
V
eff/rms
. . .
30 V
eff/rms
300
V
:
U
E
= 30
V
eff/rms
. . . 300 V
eff/rms
600
V
:
U
E
=300
V
eff/rms
. . . 600 V
eff/rms
for voltages > 100 V: power limiting = 3 · 10
6
V · Hz
12)
Plus sensor deviation
13)
Without integrated reference junction,
with integrated reference junction, additional error:
±
2 K
14)
For V > 10% of the measuring range
15)
valid as from 500 digits
Abbreviations
rdg. = Reading
r. = Measuring range
d = Digit
Measuring Range
Display Range
Reference Voltage V = 0.775 V
Resolution
300mV
3V
30V
300V
600V
– 48 dB ...
– 8 dB
– 38 dB ... + 12dB
– 18 dB ... + 32 dB
+ 2 dB ... + 52 dB
+ 22 dB ... + 63 dB
0.01 dB
0.01 dB
0.01 dB
0.01 dB
0.01 dB
0.01 dB
Display (dB) =
20 lg V
x
(V) /V
REF
Measured
Quantity
Measuring Range
for Recognition
Condition
Recogni-
tion Time
Voltage
V
V
TRMS
> 0.81 V . . . 600 V
—
1 s
Voltage
V
V
TRMS
> 1 V . . . 600 V
Frequency > 20 Hz
1 s
Resistance
0
Ω
. . . 15 M
Ω
—
1 s
Capacitance
> 1.5 nF . . . 300
μ
F
Electrolytic capacitors
must be properly
connected
1 s
Diode
Conducting state voltage:
max. 1 V
Diode must be properly
connected:
Anode to
1 s
