Earth Ground Testers CAT III 200V Measures Resistance 20 ~ 2 kOhm
Earth Ground Testers CAT III 200V Measures Resistance 20 ~ 2 kOhm
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Small and compact, the B&K Precision 309 Digital Earth Resistance Meter is a battery powered, professional meter. This easy-to-use meter is invaluable to electricians and contractors who need to ensure the "ground" quality and effectiveness of buildings, structures, equipment or electrical systems. A good earth ground is required for new buildings or structures needing to pass required electrical codes. Older buildings can lose a good, effective earth ground connection over time. This can happen after a building or structure has been struck by lightning.
| Measurement System | Earth resistance by constant Current inverter. 820Hz, 2mA approx. |
| Earth Voltage | 0~200Vac, 40~500Hz |
| Accuracy | Earth voltage ± (1%rdg+2dgt), Earth resistance ± (2%rdg+2dgt) or ± 0.1 , which is greater. |
| Safety Standard | IEC 1010-1 (EN61010-1) CAT III 200V. |
| Low Battery Indication | "B" symbol appears on the display |
| Data Hold Indication | "DH" symbol appears on the display |
| Over Range Indication | "1" (MSD) |
| Timer (auto power off) | About 3~6 minutes |
| Display | LCD 3½ digit (2000 counts) |
| Power source | 1.5V(R6P)*6 pieces dry batteries |
| Dimensions | 163(L)*100(W)*50(D)mm |
| Weight | Approx. 410g (battery included) |
| Measurement System | Earth resistance by constant Current inverter. 820Hz, 2mA approx. |
| Earth Voltage | 0~200Vac, 40~500Hz |
| Accuracy | Earth voltage ± (1%rdg+2dgt), Earth resistance ± (2%rdg+2dgt) or ± 0.1 , which is greater. |
| Safety Standard | IEC 1010-1 (EN61010-1) CAT III 200V. |
| Low Battery Indication | "B" symbol appears on the display |
| Data Hold Indication | "DH" symbol appears on the display |
| Over Range Indication | "1" (MSD) |
| Timer (auto power off) | About 3~6 minutes |
| Display | LCD 3½ digit (2000 counts) |
| Power source | 1.5V(R6P)*6 pieces dry batteries |
| Dimensions | 163(L)*100(W)*50(D)mm |
| Weight | Approx. 410g (battery included) |
