24
GMC-I Gossen-Metrawatt GmbH
Influencing Quantities and Influence Errors
1)
For temperature:
Indicated error values valid per 10 K change in temperature.
For frequency: Indicated error values valid as of 300 digit display.
2)
With zero setting
3)
If waveform is unknown (crest factor CF > 2) measure
with manual range selection.
4)
Except for sinusoidal waveform
5)
METRA HIT 16T: 2+2
Influenc-
ing
Quantity
Sphere of Influ-
ence
Measured
Quantity/
Measuring Range
Influence Error
1)
±
(... % of rdg. + ... digit)
Tempera-
ture
0
°
C ...
+21
°
C
and
+25
°
C ... +40
°
C
30/300 mV
1.0 + 3
3 ... 300 V
0.15 + 1
600 V
0.2 + 1
V
0.4 + 2
30
Ω
2)
0.15 + 2
300
Ω
0.25 + 2
3 k
Ω
... 3 M
Ω
0.15 + 1
30 M
Ω
1.0 + 1
30 nF
2)
... 3
μ
F
0.5 + 2
5)
30
μ
F
2.0 + 2
Hz
0.5 + 1
%
±
5 Digit
– 200 ... + 200
°
C
0.5 K + 2
+ 200 ... + 800
°
C
0.5 + 2
– 300 ... + 400
°
F
1.0 K + 4
+ 400 ... + 999
°
F
0.5 + 2
16I: M
Ω
ISO
0.25 + 2
16 T: M
Ω
0.25 + 2
Measured
Quantity
Frequency
15 Hz ... < 30 Hz
3 ... 600 V
1.0 + 3
30 Hz ... < 45 Hz
0.5 + 3
> 65 Hz ... 400 Hz
2.0 + 3
> 400 Hz ... 1 kHz
3.0 + 3
Measured
Quantity
Waveform
3)
crest
factor CF
1 ... 3
V
4)
±
1 % of rdg.
> 3 ... 5
±
3 % of rdg.
0
1
2
3
4
5
CF
0
1000
2000
Voltage Measurement
3000
digits
The allowable crest factor CF dof the periodic quantity to be measured is depen-
dent upon the displayed value:
