Greenlee CMT-80, Instruction Manual, Page: 10 / 100

10
Accuracy
Refer to “Specifications” 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), 0% to 80% relative humidity.
Accuracy Table
Characteristic Range Accuracy
Frequency
Range
AC Current
0.6 to 50.0 A
±
(1.8% + 0.6 A)
50 to 60 Hz
50.0 to 400.0 A
±
(1.8% + 0.3 A)
AC Voltage* 1.3 to 600.0 V ± (1.5% + 0.3 V) 50 to 500 Hz
DC Voltage*
1.8 to 600.0 V
±
(1.0% + 0.2 V)
N/A
–0.6 to –600.0 V ± (1.0% + 0.4 V)
Resistance**
0.1 to 99.9
Ω ±
(2% + 1.0
Ω
)
N/A
100 to 2000
Ω ±
(2% + 2
Ω
)†
* Input impedance: 4 k
Ω
nominal at voltages up to 30 V;
increases with voltage to approximately 600 k
Ω
at 600 V
** Open circuit voltage: 1.5 V maximum
† Multiply temperature coefficient times 1.5 when operating temperature
is above 40
°
C.
Continuity
Tone on: Circuit resistance is
≤
25
Ω
(approximately).
Tone off: Circuit resistance is
≥
400
Ω
(approximately).