| Function |
Range |
Resolution |
Measuring range |
Accuracy |
Earth resistance
Re
(Rg at
ρ measurement) |
2Ω |
0.001Ω |
0.03~2.099Ω |
|±2%rdg±0.03Ω |
| 20Ω |
0.01Ω |
0.03~20.99Ω |
|±2%rdg±5dgt (*1) |
| 200Ω |
0.1Ω |
0.3~209.9Ω |
| 2000Ω |
1Ω |
3~2099Ω |
| 20kΩ |
10Ω |
0.03~20.99kΩ |
| 200kΩ |
100Ω |
3~209.9kΩ |
Auxiliary earth resistance
Rh, Rs |
|
|
|
8% of Re+Rh+Rs |
Earth resistivity
ρ |
2Ω |
0.1Ω•m~1Ω•m
Autoranging |
0.2~395.6Ω•m |
ρ=2×π×a×Rg (*2) |
| 20Ω |
0.2~3956Ω•m |
| 200Ω |
20~39.56kΩ•m |
| 2000Ω |
0.2~395.6kΩ•m |
| 20kΩ |
2.0~1999kΩ•m |
| 200kΩ |
Series interference voltage
Ust (A.C only) (*3) |
50V |
0.1V |
0~50.9Vrms |
|±2%rdg±2dgt (50/60Hz) |
| |±3%rdg±2dgt (40~500Hz) |
Frequency
Fst |
Autoranging |
0.1Hz
1Hz |
40Hz~500Hz |
|±1%rdg±2dgt |
| Measuring method |
Earth resistance: Fall-of-potential method (currents and voltages measured via the Probes)
Measurement method of Earth Resistivity (ρ): Wenner 4-pole method
Series interference voltage (earth voltage): RMS Rectifier (between the E-S Terminals) |
| Memory capacity |
800 data |
| Communication Interface |
Model 8212-USB Optical Adaptor |
| LCD |
Dot-matrix 192×64 monochrome |
| Over-range Indication |
"OL" |
| Overload Protection |
between E-S(P) and between E-H(C) terminals AC280V / 10 sec. |
| Withstand voltage |
between the electrical circuit and enclosure AC3540V(50/60Hz) / 5 sec. |
| Applicable standards |
IEC 61010-1 CAT.III 300V, CAT.IV 150V Pollution degree 2
IEC 61010-031, IEC 61557-1, 5, IEC 61326-1 (EMC), IEC 60529 (IP54) |
| Power source |
DC12V : sizeAA manganese dry battery (R6P) × 8
(Auto power off: approx. 5 minutes) |
| Dimensions |
167(L) × 185(W) × 89(D) mm |
| Weight |
approx. 900g (including batteries) |
| Accessories |
7229A (Earth precision measurement),
7238A (Simplified measurement test leads),
8032 (Auxiliary earth spikes [2 spiks/set])×2 sets (4 spikes in total),
8200-04 (Cord reel [4 pcs])×1 set,
8212-USB (USB adaptor with "KEW Report(Software)"),
9121 (Shoulder strap),
9125 (Carrying case),
R6P×8, Instruction manual, Calibration certificate |
| Optional |
8212-RS232C (RS232C adaptor with "KEW Report(Software)") |