Photo Screen

SPU-3DA

Photo Screen SPU-3DA

The Photo Screen SPU-3DA detects the passage of a high-speed flying object, e.g., bullet, as it passes a certain point on the planar optic screen. A pulse signal is output as a result. Using two or more Photo Screens, high-speed photography can be timed, and the transit time of a flying object can be measured.

Features

  • The system uses a planar sensor (500 mm x 300 mm) and thus is capable of detecting a bullet or any other object that does not follow a straight trajectory.
  • The system is portable, thus is suited to fieldwork on-site. It comes with a carry case (985 mm x 488 mm x 405 mm).
  • The detection sensitivity level is adjustable to suit the speed and size of the test object, as well as allow for gun smoke.
  • The system is easy to use, simple in structure, and highly reliable.
  • A self-check can be performed to determine sensor functionality prior to use.
  • The system is immune to noise due to use of a photo coupler.
  • Choice of strobe: the MS-230DA (short-flash type) is used for high speed objects, and the PS-240D is used for brighter lighting.
  • The timing of the strobe may be controlled for photography using the pulse generator FG-310.

System configuration example for photography of a live-fired bullet and speed measurement

System configuration example

Specification

Model SPU-3DA
Detection function and
method		 Range: 500 mm H × 300 mm W
Speed: 50 m/sec to 2000 m/sec
Object: Opaque object larger than 5 mm diameter sphere
Variable detection sensitivity: 0.2 V to 2.0 V, 0.2-V step, 10 steps
Output signal 1-Vp or 5-Vp positive pulse wave
Pulse width 500 µsec to 1000 µsec
Output impedance Approx. 200 Ω
Detection check LED lights if all 50 phototransistors are functioning normally
Manual signal output Pushbutton switch (MANUAL)
Power source 100 VAC ± 10 V, 50/60 Hz, 100 VA or less
Dimensions and weight 700 mm W × 800 mm H × 120 mm D, 8.5 kg

Basic configuration

Photo Screen
SPU-3DA		 2 units (photo transmitter/photo receiver)
Power cable 2 (cable length: 10 m)
Signal cable 2 (cable length: 20 m)
Cable connecting photo transmitter and receiver 2 (cable length: 0.85 m)
Carrier case Aluminum trunk (985 mm × 488 mm × 405 mm)

Option

High brightness type Stroboscope: PS-240D
Lamp house: e.g., SLB-601 (flash duration: 40 µsec or less)
For high-speed flying object Stroboscope: MS-230DA
Lamp house: e.g., SLA-151A (flash duration: 6 µsec or less)

Inquiry for this product

Click the “Contact us” button to make inquiries about products, services, device calibration, etc. Contact us Click here for details on how Sugawara handles personal information.