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SPECIFICATIONS EXTECH 461895: COMBINATION CONTACT/PHOTO TACHOMETER
- General Specifications
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 Extech 461895: 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
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 Extech 461895: 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
- Electrical Specifications
— Photo Tachometer Extech 461895
Range: 5 to 99,999 rpm
Resolution: 0.1 rpm (0.5 to 999.9 rpm); 1 rpm (over 1000 rpm)
Accuracy (% rdg): + (0.05% + 1 digit)
— Contact Tachometer
Range: 0.05 to 19,999 rpm
Resolution: 0.1 rpm (0.5 to 999.9 rpm); 1 rpm (over 1000 rpm)
Accuracy (% rdg): + (0.05% + 1 digit)
— Surface Speed Extech 461895
Range: 0.2 to 6560 ft/min
Resolution: 0.1 ft/min (0.1 to 999.9 ft/min); 1 ft/min (over 1000 ft/min)
Accuracy (% rdg): ± (1% rdg + 1d)
— Surface Speed
Range: 0.05 to 1999.9 m/min
Resolution: 0.01 m/min (0.05 to 99.99 m/min); 0.1 m/min (over 100 m/min)
Accuracy (% rdg): ± (1% rdg + 1d)
Range: 5 to 99,999 rpm
Resolution: 0.1 rpm (0.5 to 999.9 rpm); 1 rpm (over 1000 rpm)
Accuracy (% rdg): + (0.05% + 1 digit)
— Contact Tachometer
Range: 0.05 to 19,999 rpm
Resolution: 0.1 rpm (0.5 to 999.9 rpm); 1 rpm (over 1000 rpm)
Accuracy (% rdg): + (0.05% + 1 digit)
— Surface Speed Extech 461895
Range: 0.2 to 6560 ft/min
Resolution: 0.1 ft/min (0.1 to 999.9 ft/min); 1 ft/min (over 1000 ft/min)
Accuracy (% rdg): ± (1% rdg + 1d)
— Surface Speed
Range: 0.05 to 1999.9 m/min
Resolution: 0.01 m/min (0.05 to 99.99 m/min); 0.1 m/min (over 100 m/min)
Accuracy (% rdg): ± (1% rdg + 1d)
Introduction Extech 461895
Combination Contact and Non-contact RPM Measurements with Visible Light Beam
461895 Combines both contact (0. 5 to 19,999 RPM) and non-contact (5 to 99,999 RPM) models for use in virtually all tachometer applications. Uses visible light for non-contact measurements up to 6in. (150mm) from target. Comes with wheels for linear surface speed (0.2 to 6560 ft/m; 0.05 to 1999.9 m/m) or RPM measurements, 4 AA batteries, 23in. (0.6m) reflective tape, and carrying case.
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
– 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
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