Model: 1621
Hãng sản xuất: Fluke
Xuất xứ:Rumani
Bảo hành: 12 tháng
Thông số kỹ thuật Đồng hồ đo điện trở đất Fluke 1621:
| General Specifications | ||
| Measuring functions | 3-pole earth ground resistance, 2-pole ac resistance of a conductor, Interference voltage | |
| Intrinsic error | Refers to the reference temperature range and is guaranteed for one year | |
| Measuring rate | 2 measurements/second | |
| Battery1 | One 9 volt alkaline (LR61) | |
| Battery condition | LO-BAT is displayed if voltage drops below 6.5 V | |
| Voltages | Between jacks H/C2 and E/C1 | 250 Veff maximum (effective voltage) |
| Between jacks S/P2 and E/C1 | 250 Veff maximum | |
| Climatic class | VDE/VDI 3540 RZ (conforming to KWG as per DIN 40040, 4/87) | |
| Temperature performance2 | Working | -10°C to +50°C (+14°F to +122°F) |
| Operating | 0°C to +35°C (+32°F to +95°F) | |
| Storage | -20°C to +60°C (+68°F to +140°F) | |
| Reference | +23°C ±2°C (+73°F ±4°F) | |
| Temperature coefficient | ±0.1% of range per degree Kelvin | |
| Safety | IEC/EN 61010-1, 600 V CAT II, pollution degree 2 | |
| Dimensions | 113 x 54 x 216 mm (4.5 x 2.1 x 8.5 in), including holster | |
| Weight | 850 g (1.9 lb), including standard accessories, volume approximately 600 cm3 | |
| Electrical Specifications | ||
| Maximum deviations | E1 Influence factor | Position |
| E1 Deviation influence | 0% | |
| E2 Influence factor | Supply voltage | |
| E2 Deviation influence | 0% | |
| E3 Influence factor | Temperature E3 | |
| E3 Deviation influence | 2.3% | |
| E4 Influence factor | Serial interference voltage (20 V) | |
| E4 Deviation influence | 0.6% | |
| E5 Influence factor | Probe- and auxiliary probe resistance | |
| E5 Deviation influence | 10% | |
| Test voltage | 3.7 kV | |
| Protection type | IP 40; IEC/EN 60529 | |
| Electromagnetic compatibility | Emission | IEC/EN 61326 Class B |
| Immunity | IEC/EN 61326 Annex C | |
| RE Resistance measurement | Measuring method | Current-voltage measurement with improved cross-talk attenuation, no compensation of measuring lead resistance, with probe (3-pole) or without probe (2-pole), as per IEC/EN 61557–5 |
| Open circuit voltage | 23 to 24 V AC | |
| Short circuit current | > 50 mA AC | |
| Measuring frequency | 128 Hz | |
| Maximum permissible overload | 250 Veff | |
| Measuring time | 8 seconds (average from when START is pressed) | |
| Limit input | Tester retains set value even if instrument is turned off (assuming battery power supply is sufficient) | |
| Automatic changeover of resolution | RH | < 7 kΩ |
| Resolution | 0.01 Ω | |
| RH | < 50 kΩ | |
| Resolution | 0.1 Ω | |
| RH | > 50 kΩ | |
| Resolution | 1 Ω | |
| Interference voltage display DC + AC | Vmax | 30 Veff |
| Common mode rejection | > 80 dB at 50 Hz and 60 Hz | |
| Ri | 680 kΩ | |
| Measuring uncertainty | < 10% for pure AC and DC signals | |
| Measuring Range | ||
| 0.15 Ω to 20 Ω | Resolution | 0.01 Ω |
| Display range | 0 to 19.99 Ω | |
| 200 Ω | Resolution | 0.1 Ω |
| Display range | 20 to 199.9 Ω | |
| 2 kΩ | Resolution | 1 Ω |
| Display range | 200 to 1999 Ω | |
| Intrinsic Uncertainty | ±(6% of measured value + 5D) | |
| Operating uncertainty IEC 615573 | ±(18% of measured value + 5D) | |
Đồng hồ đo điện trở đất Fluke 1621
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