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Extech 461895 Combination Contact/Photo Tachometer
Item #:
EXT-461895
Brand:
Extech
Share this product:
461895 Combination Contact/Photo Tachometer by Extech
Features
- Unique display where characters reverse direction depending on measurement mode you are in
- Large 0.4" (5 digit) LCD display
- Microprocessor based with quartz crystal oscillator to maintain high accuracy
- Tachometer memory stores last, max and min readings
- Provides wide RPM (photo and contact) and Linear Surface Speed (contact) measurements
- Accurate to 0.05% with max resolution of 0.1rpm in either photo or contact mode
- Complete with tips and wheel for rpm or linear surface speed, four 1.5V AA batteries, reflective tape and carrying case
| Circuit | Custom one-chip LSI microprocessor circuit. |
| Time base | Quartz crystal |
| Display | 5 digit, 10 mm (0.4") LCD display with function annunciation |
| Measurement | Photo Tachometer - 5 to 99,999 rpm Contact Tachometer - 0.5 to 19,999 rpm Surface Speed - 0.2 to 6,560 ft/min Surface Speed - 0.05 to 1,999 m/min |
| Memory | Last value, last max. reading, last min. reading |
| Sampling Time | Photo Tachometer - 1 sec. (over 60 rpm) Contact Tachometer - 1 sec. (over 6 rpm) |
| Detecting Distance - Photo Tachometer | 50 to 150 mm (2 to 6 inches) depending on ambient light |
| Operating Temperature | 32 °F to 122 °F (0 °C to 50 °C) |
| Power Supply | 4x 1.5 V AA (UM 3) batteries |
| Weight | 0.66 lbs. / 300g (including battery) |
| Size | 8.5 x 2.6 x1.5" (215 x 65 x 38mm) |
| Accessories | Reflective tape (23"), cone and funnel rpm adaptor, surface speed test wheel, and carrying case |
Measurement |
Range |
Resolution |
Accuracy (% rdg) |
Photo Tachometer |
5 to 99,999 rpm |
0.1 rpm (0.5 to 999.9 rpm) 1 rpm (over 1000 rpm) |
± (0.05% + 1 digit) |
Contact Tachometer |
0.05 to 19,999 rpm |
0.1 rpm (0.5 to 999.9 rpm) 1 rpm (over 1000 rpm) |
|
Surface Speed |
0.2 to 6560 ft/min |
0.1 ft/min (0.1 to 999.9 ft/min) 1 ft/min (over 1000 ft/min) |
± (1% rdg + 1d) |
Surface Speed |
0.05 to 1999.9 m/min |
0.01 m/min (0.05 to 99.99 m/min) 0.1 m/min (over 100 m/min) |
