Extech 382357 Clamp-On Ground Resistance Tester

Features

• Ground resistance measurements down to 0.025ohms with 0.002ohms maximum resolution
• True RMS AC Leakage current range of 0.2mA to 30A with 1.000mA maximum resolution
• Programmable Datalogging with 116 data points
• Programmable Hi/Lo Alarm
• 0.9" Jaw Size for Large Ground Rods
• Simplifies ground resistance measurements on multiple point ground systems
• Verification resistors confirm accuracy of meter
• Automatic Self Calibration when powered on
• 9999 Count High Contrast LCD Display
• Electrical Noise Detection feature prevents inaccurate readings
• Data Hold and Continuity Beeper
• Complete with 9V battery, Resistance check plate and carrying case

Specifications / Range / Resolution / Accuracy (%rdg)

• Ground Resistance:
  • 0.025 to 0.25ohms / 0.002ohms / +/-(1.5%+0.05ohm)
  • 0.250 to 1.000ohm / 0.02ohm / +/-(1.5%+0.5ohm)
  • 1.001 to 9.999ohm / 0.02ohm / +/-(1.5+0.1ohm)
  • 10.00 to 50.00 ohm / 0.04ohm / +/-(1.5%+0.1ohm)
  • 50.01 to 99.99ohm / 0.04ohm / +/-(1.5%+0.5ohm)
  • 100.0 to 200.0ohm / 0.4ohm / +/-(1.50.5ohm)
  • 200.1 to 400.0ohm / 2ohm / +/-(5.0%+5ohm)
  • 400.0 to 600.0 ohm / 5 ohm / +/-(10%+10ohm)
  • 600.1 t o1500ohm / 20ohm / +/-20%
• AC Leakage Current (Trms):
  • 0.200 to 1.00mA / 0.001mA / +/-(2.0%+/-0.05mA)
  • 1.00 to 10.00mA / 0.01mA / +/-(2.0%+/-0.03mA)
  • 10.0 to 100.0mA / 0.1mA / +/-(2.0%+/-.03mA)
  • 100 to 1000mA / 0.1mA / +/-(2.0%+/-0.3mA)
  • 0.20 to 4.00A / 0.01A / +/-(2.0%+/-0.03A)
  • 4.00 to 30.00A / 0.01A / +/-(3%+/-0.03A)
• Resistance Test Frequency : 1.667kHz
• Continuity : Beep if less than 40 (approximately)
• Dimensions : 10.2x4.4x1.9" (258x110x47mm)
• Weight: 24.7oz (700g)

Applications

• Verify resistance of cellular and communication tower ground grids
• Check utility transmission systems and grounding rods
• Maintenance on electric transportation systems
• Ideal for grounding systems in sub-stations, factories and office buildings.

Ordering Information

• 382357 : Clamp-On Ground Resistance Tester
• 382357-NIST : Clamp-On Ground Resistance Tester w/NIST Certificate