Digital Stroboscope

The HHT series digital stroboscopes provide reliable and accurate speed measurements as well as stop-motion diagnostic inspection. A rotary encoder enables quick, precise frequency setting from 30 to 20,000 flashes per minute. The crystal-controlled circuitry eliminates drift and allows readings accurate to 0.1 rpm. "Divide by 2" and "Multiply by 2" buttons let the user check actual rpm.

With "Phase +" and "Phase -" buttons, the user can add or subtract internal phase delays to keep the reference viewing target in eyesight. An "Adder Mode" enables visual inspection for misalignment or bent odd-numbered fan blades, propellers, etc. In the "Tach" mode, the unit uses external sensors to measure up to 250,000 rpm directly without flashing the strobe. Up to 6 preset memory values can be recalled from memory, and the unit recalls the last value measured.

A "Charge" indicator shows remaining battery life. The microprocessor-controlled charging circuit ensures long battery life.

Note: models with -KIT includes a stroboscop, protective case, charger (for HHT32R) and spare lamp.

SPECIFICATIONS:

Flash Range: 30 to 20,000 fpm, 0.5 to 333 fps
Flash Accuracy: ±0.01% rdg or ±0.5 fpm
Flash Resolution: 0.1 fpm
Tach Range: 5 to 250,000 rpm
Tach Resolution: 0.1 rpm, up to 99,999.9 rpm; 1 rpm, 100,000 to 250,000 rpm
Tach Accuracy: ±0.01% rdg or ±0.2 rpm
Display: 6-digit backlit alphanumeric LCD, 12.7 mm
Average Power:
    HHT31R: 15 W
    HHT32R: 13 W
Flash Energy: 230 mJ (typical)
Flash Duration: 20 to 50 µs
Flash Tube Life: 100 million flashes typical
Power Supply:
    HHT31R: 115 or 230 Vac, 50 to 400 Hz
    HHT32R: Internal rechargeable batteries, 6 Vdc @ 2.5 A max
Battery Life (HHT32R): Greater than 120 minutes @ 1800 fpm
External Trigger Input: 3 mm jack plug, TTL compatible
Trigger to Flash Delay: 5 µs, typical
Synchronisation Output: 3 mm jack plug, TTL compatible
Weight:
    HHT31R: 0.7 kg
    HHT32R: 1.9 kg
Dimensions
    Body: 90.4 H x 86 W x 229 mm L
    Reflector Housing: 122 mm Dia.
    Handle: 108 mm L
Tripod Mount: 1.4-20 UNC
Operating Temperature: 5 to 40°C
Operating Humidity: Max RH 80% for temperatures up to 31°C, decreasing linearly to 50% RH @ 40°C