Digital Stroboscope with External Battery
Flash Range: 40-35,000 RPM/FPM

Portable, highly stable and accurate, industrial-quality tools for non-contact RPM measurement, inspection and observation of moving parts by "freezing" or "slowing down" the action.
  • Highest accuracy and most stable flash rate
  • Accepts external trigger input and provides synchronizing pulse output
  • Easy-to-read LED display
  • Phase shift for best view and flash photography
  • Easy-to-operate controls
  • Flash rate control
  • Detachable pistol-grip handle
  • Instant double and half-rate flash selection for error-free reading
  • Provides 12 V DC power for external sensors
Optional Carrying Case
Optional Carrying CaseHard plastic carrying case with custom molded insert allows for safe storage and easy transportation. Provides storage space for the DT-315A, AC adapter, and accessories.
Light Output (LUX) vs Distance
light output
at 30 cm Distance, 6000 flashes/min (FPM)
Flash Range40-35,000 FPM
AccuracyInternal Mode: ±0.01% of reading
External Mode: ±0.01% or ± 1 digit
Resolution0.1 FPM: 40.0 - 4,999.9 FPM
0.2 FPM: 5,000 - 7,999.8 FPM
0.5 FPM: 8,000 - 9,999.5 FPM
1 FPM: 10,000 - 35,000 FPM
Drift±0.01% per °C
Update TimeInternal Mode: 0.2 seconds
External Mode: ±0.01% or ± 1 digit
Input SignalLO level: 0-0.4 VDC
HI level: 2.5 - 12 VDC -- or open collector (npn)
pulse width 50us min
Output SignalSynchronous, 400 µs pulse, 0 to approx. ± 12 V DC 1000 ohms impedance
Display & RateDivide or multiply by 2, selectable
Operating Temperature32-104 °F (0-40 °C)
Display5 digits, 10 mm high, red LED
FlashtubeXenon, 10 W maximum
Flash Duration10-30 µs
Sensor Power Supply12 VDC ± 0.5V (50ma)
Power RequirementsExternal Rechargeable 12 V battery
Includes Battery Charger 115V AC (DT-315AEB) or 230V AC (DT-315AEB-2)
Weight4.4 lbs. (2 kg)
Dimensions4.7 x 5.6 x 9.7" (120 x 141 x 248 mm)
Warranty2 Years
Phase Shift0 - 359° with 1° resolution or
0 - 333 ms from 200 - 3,000 FPM
Input Impedance10,000 ohms
PDF Instruction Manual Click to downloadExternal Connector Details Click to download
PDF Data Sheet Click to download
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NISTCAL$100.00NIST Traceable Calibration Certificate
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SG-300$100.00Protective Rubber Caps for DT-300 Series Strobes
SAS-DT300$185.00Articulating Swing Arm for Shimpo Stroboscopes
BP-7AHR$120.00Spare Battery with charger (100-240V) for DT-315EAB
DT300-CON$30.00Input / Output Connector for DT-311A, DT-315A Stroboscopes
DT-TRI-HD$35.00Tripod for Tachometers and Stroboscopes
311RT$15.00Spare Flash Tube Removal Tool
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)