JEDTO 2236B+  เครื่องวัดความเร็วรอบ Tachometer 2 IN 1 Contact and Non-contact

Features:
1. Adopt microprocessor (mcu) chip, photoelectric
technology, anti Interference technology, semiconductor laser and other
advanced technologies to realize the [Non-contact measurement] and [Contact measurement].
2. Wide measuring range and high resolution.
3.  Large-screen LCD display, clear reading, no parallax.
4. Automatically store the maximum value UP, minimum about 500 measurement values
at the same time, convenient for users to count and analyze the measurement data
(The measurement data is automatically refreshed when you press [Measurement key]).
5. When the battery voltage is too low, the meter displays the prompt symbol.
6. Contact measurement and non-contact measurement, one meter for two purposes.

Specifications:
Display: 5-digit large-screen LCD display, character height 18mm
Measuring range:
2.5 ~ 99999RPM (r/min) non-contact speed
0.5 ~ 19999RPM (r/min) contact speed
0.05 ~ 1999.9m/min (m/min) contact surface speed
Resolution: Non-contact speed:
0.1RPM (r/min) (2.5 ~ 999.9RPM)
1RPM (r/min) (above 1000RPM)
Contact speed:
0.1RPM (r/min) (0.5~ 999.9RPM)
1RPM (r/min) (above 1000RPM)
Contact surface speed:
0.01m/min (m/min) (0.05 ~99.99m/min)
0.1m/min (m/min) (above 100m/min)
Measurement accuracy: +(0.05%+1 digit)
Sampling time: 0.6 seconds (above 100 rpm)
Range selection: automatic switching
Time base: 6MHz quartz crystal vibrator
Effective distance: 50mm ~500mm (photoelectric type)
Size: 155x70x35mm (without contact accessories)
Power supply. 3 x1.5V AA batteries