ST-320BL Black Light LED Stroboscope

The ST-320BL is a portable or permanent mount stroboscope.

Utilizing super bright high-powered black light LED lamps, these stroboscopes are perfect for UV ink printing applications. The ST-320BL’s LED array provides a bright, stable strobe light over a wide measurement range with a lifetime far exceeding xenon lit stroboscopes. Operation is simple with the 8 button keypad and quick rate adjustment dial, combined with large, backlit LCD display. Phase shift, flash duration, plus flash rate are all quickly adjustable. The unit can work off user adjusted flash frequency or from a remote sensor’s signal which will automatically adjust to corresponding process fluctuations.

The ST-320BL is designed for speed and frequency measurements in the printing, packaging, textile, automotive, cable, mining, steel, chemical, optical and medical industries in various applications.

  • Wide Flash Range 60 – 120,000 Flashes/min. (1-2000 Hz) can be adjusted to meet almost any high-speed application
  • Long-life Black Light LED operation for UV ink applications
  • Adjustable Flash Pulse duration achieves sharper images for detailed inspection
  • Phase Shift Advances or retards flash timing for viewing gear teeth, cutting surfaces, repeats or “drifting” images
  • Input sensor trigger function allows process machinery to control flash rate
  • Delay time adjustment combined with leading or trailing edge activation simplifies process set-up when using external signal input
  • x2 and 1/2 keys for large adjustment rate change or +/- for fine tuning
  • 1/4-20 UNC connection for permanent mount applications (remove trigger handle)
Model ST-320BL
Flash Rate Range 60 to 120,000 FPM; 1-2000 Hz
Accuracy 0.01%±1 digit of F.S. @ 77° F (25°C)
Lamp 9 black light LED’s; 415 to 420 nm wave length
Lamp Lifetime Approximately 3~5 years depending on usage
Display Backlit LCD
Resolution 60 ~12,000 FPM = 0.1 FPM; 12,001~120,000 FPM = 1 FPM; 1~200 HZ = 0.01 Hz; 201~2000 = 0.1 Hz
Flash Duration 0.1°- 2.5°
Phase Shift 0-359°
Power Requirement ST-320BL-1: 100-120 VAC; ST-320BL-2: Rechargeable Battery 110 – 240 VAC
Battery (ST-320BL-2) Lithium DC 16.8V 2600 mAh
Battery Life (ST-320BL-2) Approx. 12 hrs depending on settings
Input Signal 15 V Pulse Input; Mini-USB.
Input Signal Range 60-120,000 FPM (1-2000 Hz)
Input Pulse Width Over 50 μs
Input Signal Flash Delay 0-999 ms; 0-359°
Temperature Limits 32-95°F (0-35°C)
Humidity Limits 35 to 85% RH
Enclosure Aluminum & ABS
Mounting 1/4-20 UNC Thread
Enclosure Rating IP54
Product Weight ST-320BL-1: 1.85 lb (0.84 kg); ST-320BL-2: 1.98 lb (0.90 kg)
Package Weight ST-320BL-1: 4.40 lb (2.0 kg); ST-320BL-2: 5.73 lb (2.6 kg)
Approvals CE
Warranty 1-Year
Included Accessories Carrying Case, ST-320BL-1: 6.5’ (2 m) AC power cord; ST-320BL-2: Power Recharging Adapter with cord
Model Description
ST-320BL-1 Portable Black Light LED Stroboscope, 100-120 VAC Line Powered
ST-320BL-1-230V Portable black light LED Stroboscope, 220 -240 VAC line powered
ST-320BL-1-230V-EU Portable black light LED Stroboscope, 220 -240 VAC line powered, EU connector
ST-320BL-2 Portable Black Light LED Stroboscope, Rechargeable Battery with 100-240VAC power adapter
ST-320BL-2-EU Portable Black Light LED Stroboscope, Rechargeable Battery with 100-240VAC power adapter, EU connector


Model Description
SG-320BL Front Rubber Strobe guard for ST-320BL
ST320HANDLE Top Handle for ST-320BL
E2E-X5ME1-Z-USB Proximity Sensor with USB connection

Literature Download

ST-320BL Data Sheet | ST-320BL Manual