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| Product Name | AMITTARI AT-135B Rotation speed stroboscopic Meter | Duban DB22-FPM42K Stroboscope |
| Product Price | $344.00 | $388.00 |
| Details | Details | |
| Model comparison | ||
| Parameter comparison | ||
| resolution | 0.1FPM (below 1000FPM); 1FPM (above 1000FPM) | 0.1FPM (below 1000 FPM); 1FPM (above 1000 FPM) |
| test Range | 50~40000FPM | |
| Measurement accuracy | ±（0.05%n+1d） | ±(0.05%+1nd) |
| Sampling time | 0.3 second | 0.3s |
| Internal trigger/external trigger | Free conversion | |
| External trigger signal amplitude | TTL level | |
| Fast FM | *2，÷2 | *2，÷2 |
| High and low Range | convertible | |
| Normal Operating Conditions | Non-corrosive gases and strong electromagnetic fields | |
| Ambient Temperature | 0℃-40℃ | |
| relative humidity | Less than 85% RH | |
| Flashing Lamp life | 100 million times | |
| power supply | AC 220 +/- 10% V, 2A, 50Hz; AC 110 +/- 10% V, 2A, 50HZ | AC220/AC110 +/- 10% v, 2A, 50Hz; optional rechargeable battery; AC220 +/- 10% v, 2A, 50Hz |
| power consumption | Approximately 50W | |
| Size | 210x85x185mm | 210x85x185mm |
| weight | 660g | 660g |
