Accuracy Table - Greenlee CMT-90 Manual De Instrucciones

Accuracy
Refer to "Specifications" for operating conditions and temperature coefficient.
Accuracy is specified as follows: ± (a percentage of the reading + a fixed
amount) at 23 °C ± 5 °C (73.4 °F ± 9 °F), 0% to 80% relative humidity.
Accuracy for AC measurements is specified for input crest factors that do not
exceed the values in the "Maximum Input Crest Factor" table on this page.

Accuracy Table

Characteristic
AC Current
AC Voltage*
DC Voltage*
Resistance**
* Input impedance: 4 kΩ nominal at voltages up to 30 V;
increases with voltage to approximately 277 kΩ at 1000 V
** Open circuit voltage: 1.5 V maximum
† Multiply temperature coefficient times 1.5 when operating temperature
is above 40 °C.
Maximum Input Crest Factor
Maximum
Crest Factor
1.414
3
5
Linear decrease from
5 to 1.5 over
range shown
Continuity
Tone on: Circuit resistance is ≤ 25 Ω (approximately).
Tone off: Circuit resistance is ≥ 400 Ω (approximately).
Range
0.6 to 170.0 A
170.1 to 600.0 A
1.3 to 999.9 V
1.8 to 999.9 V
–0.6 to –999.9 V
0.0 to 99.9 Ω
100 to 2000 Ω
Current
0.6 to 6.0 A
6.1 to 20.0 A
20.1 to 500.0 A
500.1 to 600.0 A
Accuracy
± (1.9% + 1 A)
± (1.9% + 2 A)
± (1.5% + 0.3 V)
± (1.0% + 0.2 V)
± (1.0% + 0.4 V)
± (2% + 1.0 Ω)†
± (2% + 2 Ω)†
Range
CMT-90
Frequency
Range
50 to 60 Hz
50 to 500 Hz
N/A
N/A
Voltage
Range
1.3 to 3.0 V
3.1 to 10.0 V
10.1 to 250.0 V
250.1 to 999.9 V
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