| Hioki Field Measuring Equipment
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 3143 EARTH HiTESTER
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| Overview |
Ground resistance meter
Say goodbye auxiliary grounding rods with the
 3143
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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.
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| Differences from the Previous Instrument (Model
3151
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Common ground resistance meters such as the
3151 measure the resistance using a frequency between 500 Hz and several kHz.
The
3143 uses a frequency between 100 kHz and 1.5 MHz, close to that of a lightning surge. Therefore, measurement
errors can result if the
3143 is used in situations such as the following.
In these instances, we recommend using Model
3151
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- Electrical grounding or mesh grounding.
- Electrical power equipment grounding.
- When the measurement point is located at a distance from the insertion point of the grounding electrode.
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(with case)
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| Options (Click for picture)
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9265 MEASUREMENT CABLE - Supplied as standard with the
3143 black 1 m(3.28 ft), red 20 m(65.62 ft), one each;
9216 CABLE WINDER ×1
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9216 CABLE WINDER - Supplied as standard with the
3143
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9338 CARRYING CASE - Supplied as standard with the
3143
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| Basic specifications
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| Ground resistance |
20.0 to 49.9 ohm (±10 % rdg.), 50.0 to 500.0 ohm (±5 % rdg.)
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| Ground voltage |
0 to 10 V (±5 % rdg.) |
| Principle of operation |
voltage comparison method (Measurement of voltage at loop impedance serial resonance)
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| Open circuit voltage |
1 V AC peak typ. |
| Measurement current |
3.6 mA AC max. (With terminals shorted)
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| 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
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| Power supply |
LR6(AA) alkaline batteries × 4, (Continuous use 8 hours)
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| 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)
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| Accessories |
9265 MEASUREMENT CABLE (black 1 m(3.28 ft), red 20 m(65.62 ft), one each; 9216 CABLE WINDER ×1), 9338 CARRYING CASE (1)
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| 3143 / 3151 product catalog.pdf (268 KB) |
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