Product DATASHEET Clamp-On Ground Resistance Tester Enables non-contact measurements of ground conductors without need for auxiliary ground spikes Features: • Ground resistance measurements down to 0.03Ω with 0.02Ω maximum resolution • True RMS AC Leakage current range of 0.2mA to 15A with 0.001mA maximum resolution • Clearly marked Rotary Switch operation • Simplifies ground resistance measurements on multiple point ground systems • 0.9˝ Jaw Size for Large Ground Rods • Electrical Noise Detection feature prevents inaccurate readings • Verification Resistors Confirm accuracy of Meter • Data Hold and Continuity Beeper • Automatic Self Calibration when powered on • 9999 Count High Contrast LCD Display • Complete with 9V battery, Resistance check plate and carrying case CAT III-300V, CAT II-600V Specifications Ground Resistance: AC Leakage Current (Trms): Continuity: Dimensions: Weight: Resolution Range 0.03 to 9.99Ω 0.02Ω 10.0 to 99.9Ω 0.1Ω 0.4Ω 100.0 to 199.9Ω 200.0 to 399.9Ω 2Ω 5Ω 400.0 to 599.9Ω 600.0 to 999.9Ω 10Ω 30Ω 1000 to 1500Ω 0.200 to 0.999mA 0.001mA 1.000 to 9.99mA 0.01mA 0.1mA 10.00 to 99.9mA 100.0 to 750.0mA 0.1mA 0.20 to 15.00A 0.01A Beep if less than 40Ω (approximately) 10.2 x 4.4 x 1.9" (258 x 110 x 47mm) 24.7oz (700g) Accuracy (%rdg) ±(1.5% + 0.1Ω) ±(2.0% + 0.3Ω) ±(3.0% + 1.0Ω) typical ±(5.0% + 5Ω) typical ±(10% + 10Ω) typical Not specified Not specified ±(2.5% + 0.05mA) ±(2.5% + 0.05mA) ±(2.0% + 0.3mA) ±(2.5% + 3mA) ±(2.0% + 0.05A) Applications: • Verify resistance of cellular and communcation 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 EXTECH INSTRUMENTS CORPORATION 285 Bear Hill Road, Waltham, MA 02451-1064, U.S.A. Phone: 781-890-7440 • FAX 781-890-7864 ISO 9001:2000 CERTIFIED Ordering Information: 382356 ............Clamp-On Ground Resistance Tester 382356-NIST ..Clamp-On Ground Resistance Tester with NIST Certificate “Make mine an Extech!™” www.extech.com 07/13/05 - R1