The Lutron DT-2339 Digital Stroboscope manual provides specifications, operation instructions, and power options for measuring rotating equipment speeds.
The DT-2339 Digital Stroboscope uses a high‑intensity xenon flash tube and a back‑lit LCD display to measure rotation speeds from 100 to 15,000 RPM (or FPM). It offers external trigger input, micro‑processor control, and a crystal time base for high accuracy.
The instrument can be powered from AC (100‑240 V to 9 V DC adapter) or optional 1.2 V Ni‑MH rechargeable batteries. It includes detailed electrical specifications, flash tube data, and operating duty‑cycle limits for reliable industrial use.
| Measurement range | 100 to 15,000 RPM/FPM |
|---|---|
| Low flash rate range | 100 to 1,000 RPM/FPM |
| High flash rate range | 1,000 to 15,000 RPM/FPM |
| Accuracy | ± (0.05% + 1 digit) |
| Resolution | 0.1 FPM/RPM (less than 1,000 FPM/RPM) |
| Battery option | DC 1.2 V Ni‑MH rechargeable (UM‑1, D size) ×4 |
| Flash tube energy | 4 W·s (joules) |
| Flash duration | 60 to 1,000 µs |
| Beam angle | 80° |
| Display | 5‑digit LCD with backlight |
| Weight | 1 kg (2.2 lb) |
| Dimensions | 21 cm × 12 cm × 12 cm |
It measures speeds from 100 to 15,000 RPM (or flashes per minute).
The accuracy is ± (0.05 % + 1 digit).
The flash lasts approximately 60 to 1,000 microseconds.