Datasheet
GMC-I Messtechnik GmbH
5
METRAHITENERGY
TRMS SYSTEM Multimeter
Crest Factor CF
Measuring range: 1.0 CF 11.0; resolution: 0.1
Typical (not specified) maximum deviation:
Above figure: Influence of Crest Factor on Display Range
Additional error caused by the signal’s crest factor:
1.5 < CF 3 1% rdg.
3 < CF 5 3% rdg.
Power Measurement (measuring ranges for a current clamp factor of 1)
– Single-Phase Measurement for Direct and Alternating Current
1)
Ranges achieved with current clamp only
2)
Off-time > 30 min. and T
A
40 °C
Intrinsic Uncertainty and Frequency Influence for Power and Energy Measurement
1
Not valid for mV range.
Display range
– Voltage and current: 6000 digits
– Apparent, reactive and active power: 36,000 digits
– Power factor: 100 digits
Intrinsic error: stable sinusoidal voltage, stable sinusoidal current, mean voltage value:
max. 10% of amplitude. U > 10% of the upper range limit is usually the case during
normal operation due to auto-ranging, except in the smallest range.
Bandwidth up to 1 kHz; signal components of higher frequency are clipped by
input filters.
Note: Power is measured with a separate measurement circuit: As a result, specified
accuracies for voltage and current measurement do not correspond with the
specified values for the respective measuring functions.
Principally, DC voltage
linearity is only assured with voltages of
0.15 V or
10% of the upper range limit.
Additional deviation for U, I during power measurement with
higher crest factor, f = 0 … 65 Hz:
CF 2: -0.3% rdg., CF = 3: -0.9% rdg.,
CF = 4: -1.5% rdg., CF = 5: -2.5% rdg.
Square-wave signal, 10 to 65 Hz to U or I:
Additional intrinsic uncertainty of +0% / –0.7% rdg.
Mains Monitoring / Mains Disturbance Recording
* Absolute value of the transients is limited to approximately 1000 V by input protection.
Internal Clock
Time format DD.MM.YYYY hh:mm:ss
Resolution 0.1 s
Accuracy 1 minute per month
Temperature
influence 50 ppm per K
Reference Conditions
Ambient temperature +23 C 2K
Relative humidity 40 ... 75%
(no condensation allowed)
Meas. quantity frequency 45 ... 65 Hz
Meas. quantity waveform Sine
Battery voltage 1.8 V ... 3.2 V
Frequency CF 3.0 3.0 < CF 5.0 5.0 < CF 10.0
10 to 70 Hz 0.2 0.2 0.5
70 to 440 Hz 0.2 0.5 Not valid
440 Hz to 1 kHz 0.5 Not valid Not valid
> 1 kHz Not valid Not valid Not valid
Measuring
Function
Measuring
Range
Resolution at
Upper Range
Limit
Overload capacity
at 0 ... + 40 C
36,000 Counts Value Time
W, VAr, VA
360 W10nW
V: 600 V
A: 10 A
DC
AC
TRMS
sine
V
continuous
10 A: 5 min.
2)
16 A: 30 s
2)
3. mW 100 nW
36 mW 1 W
360 mW 10 W
3. W 100 W
36 W 1 mW
360 W 10 mW
600 W 100 mW
3.6 kW 100 mW
6kW 1 W
36 kW
1)
1W
360 kW
1)
10 W
3600 kW
1)
100 W
Maximum Permissible Crest Factor
Displayed Value [counts]
Curve 1: range from 0.6 to 60 V, 0.6 mA to 10 A
1
Curve 2: 600 V range
Curve 3: power measurement
3
2
Permissible Crest Factor for Voltage and Current
Measured
Quantity
Measuring
Range
Intrinsic Uncertainty (... % rdg + ... d)
DC 10 Hz to 65 Hz 65 Hz ... 1 kHz
Voltage,
auxiliary display
U 0.1 x Umax
and U 0.15 V
0.5 + 10 0.3 + 10 0.4 + 10
1
Current,
auxiliary display
I 0.01 x Imax 0.2 + 5 0.1 + 5 0.9 + 10
Power factor 1 d 1 d 1 d
1
Apparent power 1.0 + 20 0.4 + 20 1.3 + 20
1
Active power
|PF| 0.4
|PF| <0.4
1.0 + 20
—
0.4 + 20
1.0 + 20
1.5 + 20
1
3.0 + 20
1
Reactive power |PF| 0.8 — 1.0 + 20 3.0 + 20
1
Type of
Disturbance
Measuring Range Resolution
(display)
Intrinsic Uncertainty
under Reference Conditions
with Fixed Frequency of
50/60 Hz
Pulse Time
Over/
undervoltage
6 ... 600 V 60,000
digits
Dip/swell 6 ... 600 V 6000 digits 1% rdg. + 1% MR 1 half-period
Peak 6 ... 600 V 6000 digits 1% rdg. + 2% MR 1 ms
Transient 200 ... 1000 V* 10 V 50 V 0.5 ... 5 s