Specifications; Electrical - AEMC 3640 User Manual

3.1

Electrical

Measurement Ranges: Auto-ranging 0 to 2000Ω
Range
Measurement
Resolution
Test Current
Accuracy
Open Voltage
Operating Frequency: 128Hz square wave
Max. Auxiliary Rod Resistance:
Range
Current Circuit
Voltage Circuit
Response Time: Approximately 6 seconds for a stabilized measurement
Interference: Models 3640 & 4610 are designed to reject high levels of
interference voltage (DC, 50/60Hz, harmonics)
• DC voltage in series with X: 20V
• AC voltage in series with Y: 13V peak
• AC voltage in series with Z: 32V peak
Accuracies and specifications are given for an ambient temperature of 23°C ± 3°, RH of 45
to 55%, battery power at 8V, auxiliary resistance at the measurement terminals <200Ω, no
stray voltage and a magnetic field from 0 to 40A/m.
Power Source: Eight 1.5V "AA" batteries; Alkaline recommended.
Battery Life: 1800 15-second measurements
Low Battery Indicator: If the "Lo Bat" indicator lights up, the batteries
are losing power. The available operating time remaining is 100 15-second
measurements (approx).
Fuse Protection: High breaking capacity - 0.1A, >250V, 0.25 x 1.25"
10
CHAPTER 3

SPECIFICATIONS

20Ω
0 to 19.99Ω
10mΩ
10mA
2% of Reading ± 1ct
20Ω
3kΩ
Digital Ground Resistance Tester Model 3640 and 4610
200Ω
20 to 199.9Ω
100mΩ
1mA
<42V peak
200Ω
30kΩ
50kΩ
2000Ω
200 to 1999Ω
1Ω
0.1mA
3% of Reading ± 3cts
2000Ω
50kΩ