The CM3289 is a True RMS rectifying 1000A AC clamp meter that features a broad operating temperature range of -25° C to 65° C, thin and compact clamp core and optional flexible current sensor that you can attach to let you get into the tightest spots.
| AC Current range | 42.00 to 1000 A, 3 ranges (40 Hz to 1 kHz, True RMS), Basic accuracy: ±1.5 % rdg. ±5 dgt. |
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| DC Voltage range | 420.0 mV to 600 V, 5 ranges, Basic accuracy: ±1.0 % rdg. ±3 dgt. |
| AC Voltage range | 4.200 V to 600 V, 4 ranges (45 to 500 Hz, True RMS), Basic accuracy: ±1.8 % rdg. ±7 dgt. |
| Crest factor | 2.5 or less at 2500 counts (Linearly decreases to 1.5 or less at 4200 count) |
| Resistance range | 420.0 Ω to 42.00 MΩ, 6 ranges, Basic accuracy: ±2 % rdg. ±4 dgt. |
| Other functions | Continuity: Buzzer sounds at 50 Ω ±40 Ω or less, Data hold, Auto power save, Drop-proof from height of 1 meter |
| Display | LCD, max. 4199 dgt., Display refresh rate: 400 ms |
| Power supply | Coin type lithium battery (CR2032) ×1 Continuous use 70 hours |
| Core jaw dia. | φ 33 mm (1.30 in) |
| Dimensions and mass | 57 mm (2.24 in) W × 181 mm (7.13 in) H × 16 mm (0.63 in) D, 100 g (3.5 oz) |
| Included accessories | CARRYING CASE 9398 × 1, TEST LEAD L9208 × 1, Coin type lithium battery (CR2032) × 1, Instruction manual × 1 |
