| Model | DT-311A |
| Flashing Range | 40.0 – 35,000 fpm (flashes per minute) |
| Accuracy | ±0.01 % of reading |
| Resolution | 0.1 fpm: 40.0 – 5,000 fpm |
| 0.2 fpm: 5,001 – 8,000 fpm | |
| 0.5 fpm: 8,001 – 10,000 fpm | |
| 1 fpm: 10,001 – 35,000 fpm | |
| Phase Shift | Use +/- push buttons (360° in 6 seconds) |
| Display Update Time | 0.2 sec approx |
| Output Signal | Synchronous, 400 μsec. Pulse output, 0 to +12 VDC amplitude (approx.), 4.7 KΩ impedance |
| Rate Multiplier/Divider | Multiply by 2, divide by 2 |
| Flashing Range | 0.0 to 35,000 fpm |
| External Mode Accuracy | ±0.01 % ±1 digit |
| Phase Shift | 0 to 359° with 1° resolution |
| Delay Time | 0 to 2,000 mSec from 40 – 10,000 fpm |
| External Trigger Input Signal | LO level: 0 -0.8 VDC, HI level: 2.5 – 12 VDC or open collector (NPN),pulse width 50 μsec min. |
| Input Impedance | 4.7 KΩ to 12 V / 6.8 KΩ to 0 V |
| Display | 5 digits, 0.4” (10 mm) high, LED |
| Flashtube Power/Life | Xenon, 10 W max. (100 million flashes) |
| Flash Duration | 10 to 40 μs automatically adjusts with flash rate |
| Lux Rating | 8” (20 cm) Distance = 4500 lx @ 1500 fpm, 3375 lx @ 6000 fpm with 4.5″ (110 mm) irradiation diameter. 20” (50 cm) Distance = 1300 lx @ 1500 fpm, 930 lx @ 6000 fpm with 10″ (250 mm) irradiation diameter. |
| Sensor Power Supply | 12 VDC (40 mA) |
| Battery Life | 1 – 2 hours depending on flash rate |
| Power Requirement | 115 VAC or 220 VAC ±10 % 60/50 Hz, 30 VA (specify voltage) |
| Operating Temperature | 32° – 104°F (0 – 40°C) |
| Dimensions | 7.28” L x 4.72” W x 4.72” H (185 mm x 120 mm x 120 mm) |
| Product Weight | 3.35 lbs (1.52 kg) |
| Package Weight | 4.4 lbs (2 kg) |
| Warranty | 2-year |
| Included Accessories | Handle, flash tube removal tool |
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