Ground resistance meter Say goodbye auxiliary grounding rods with the 3143 Grounding is increasingly important for the safe operation and maintenance of communications equipment and many other types of facilities. However, in an urban environment where the ground is covered with concrete or asphalt, conventional measurement methods that require inserting auxiliary grounding electrodes are difficult to use. The 3143 uses a new measurement principle that makes auxiliary grounding electrodes unnecessary, so it can be used to measure ground resistance on paved roads. SPECIFICATIONS:

• Ground resistance 20.0 to 49.9 ohm (±10 % rdg.), 50.0 to 500.0 ohm (±5 % rdg.)
• Ground voltage 0 to 10 V (±5 % rdg.)
• Principle of operation voltage comparison method (Measurement of voltage at loop impedance serial resonance)
• Open circuit voltage 1 V AC peak typ.
• Measurement current 3.6 mA AC max. (With terminals shorted)
• Measurement frequency 100 kHz to 1.5 MHz
• Features Energy saving mode (after 3 minutes with no operation, displays "HOLD" and enters the standby state),
• Resonance indicator (bar graph indicator shows approximate location of resonance point), Battery check
• Power supply LR6(AA) alkaline batteries × 4, (Continuous use 8 hours)
• Dimensions, mass 155 mm(6.10 in)W × 98 mm(3.86 in)H × 49 mm(1.93 in)D, 380 g (13.4 oz) (main unit only)
• Accessories MEASUREMENT CABLE 9265 (black 1 m(3.28 ft), red 20 m(65.62 ft), one each; CABLE WINDER 9216 ×1), CARRYING CASE 9338 (1)