CMI-2000
11
Typical Measurements and Accuracy
Refer to the “Specifications” section for operating conditions and temperature coefficient.
Accuracy is specified as follows: ± (a percentage of the r a fixed amount) at 23 °C ± 5 °C
(73.4 °F ± 9 °F).
Frequency must be within the specified bandwidth for non-sinusoidal waveforms. Crest factors, unless
otherwise specified, are as follows:
• Crest factor < 2.5:1 at full scale
• Crest factor < 5.0:1 at half scale
Frequency
Function
Sensitivity
(Sine RMS)*
Range
6.000 V
2.000 V
40.0 Hz ~ 1999 Hz
60.00 V
20.00 V
600.0 V
100.0 V
1000 V
600 V**
200.0 A
10.0 A
20 Hz ~ 400 Hz
2000 A
100 A
6.000 V VFD
0.6 V ~ 2.4 V†
10 Hz ~ 400 Hz
60.00 V VFD
6 V ~ 24 V†
600.0 V VFD
60 V ~ 240 V†
* DC bias must be less than 50% of the Sine RMS value.
** If DC bias is present, it shall not exceed 100 V.
† Sensitivity decreases from 10% full scale at 200 Hz to 40% full scale at 400 Hz.
AutoCheck™ Measurements
AC Voltage AutoCheck™ Mode
Range
Accuracy at
50 Hz to 60 Hz
6.000 V
± (1.5% + 0.005 V)*
60.00 V
± (1.5% + 0.05 V)
600.0 V
± (1.5% + 0.5 V)
1000 V
± (1.5% + 5 V)
* Input > 1.5 VAC.
DC Voltage AutoCheck™ Mode
Range
Accuracy
6.000 V
± (1.3% + 0.005 V)*
60.00 V
± ( 1.3% + 0.05 V)
600.0 V
± (1.3% + 0.5 V)
1000 V
± (1.3% + 5 V)
* Input > +1.5 VDC or < -1.5 VDC.
LoZ
LoZ
Accuracy of Frequency Range
Display Range
Accuracy
xxx.x
± (0.1% + 0.4 Hz)
xxxx
± (0.1% + 4 Hz)
Input Impedance: LoZ (refer to LoZ section of “Using the Features”)
