Contact Tachometer DT-2230

Contact Tachometer DT-2230 is a pocket-sized 2 in 1 photo/contact Tachometer manufactures by lutron, It measures rotational speed {RPM} and surface speed using a non contact laser beam or a direct contact attachment.

Features :

• Compact and pocket techometer.
• The best tachometer in the world. 2 in1, one instrument combine photo tachometer and contact tachometer.
• Photo tachometer uses laser light detecting source, long measuring range up to 1.5 meters, it is useful in the RPM measurement application where the machine would be a risk to the operator or close access is difficult or not possible.
• Wide measuring range from 0.5 to 100,000 RPM, 0.1 RPM resolution for the measured value < 1000 RPM.
• Microprocessor based circuit, crystal time base, high precision with 0.1% accuracy.
• High visible LCD display gives RPM reading exactly with no guessing or errors & saves battery energy.
• Memory with recall function, the last value, max. value, min. value will be stored into the memory automatically.
• The use of durable, long lasting components, including a strong, light weight ABS plastic housing, assures almost maintenance free performance for many years.
• RS232 PC serial interface.
• Patent patented.

Specifications :

• Measurement & range :
  • Photo Tachometer : 5 to 99,999 RPM.
  • Contact Tachometer : 0.5 to 19,999 RPM.
  • Surface Speed :
    • m/min. – 0.05 to 1,999.9 m/min.
    • ft/min. – 0.2 to 6,560 ft/min.
    • in/min. – 2.0 to 78,740 in/min.
• Resolution :
  • RPM : 0.1 RPM { < 1,000 RPM }. 1 RPM { > 1,000 RPM }.
  • m/min : 0.01 m/min. ( < 100 m/min ). 0.1 m/min. ( 100 m/min ).
  • ft/min : 0.1 ft/min. ( < 1,000 ft/min ). 1 ft/min. ( 1,000 ft/min. ).
  • in/min : 0.1 in/min. ( < 1,000 in/min ). 1 in/min. ( 1,000 in/min ).
• Display : LCD, size 32 mm x 28 mm. 5 digits with display unit.
• Accuracy : ± ( 0.1% + 1 digit ).
• Photo Tachometer detecting distance : 5 to 150 cm typically.
• Memory : memorize last/max. min/value with recall.
• Time base circuit : Quartz crystal. Exclusive one-chip of microcomputer LSI circuit.
• Photo tach. laser light source :
  • Less than 1 mW.
  • Class 2 laser diode. Red Wave length is 645 nm approximately.
• Operating Temperature : 0 to 50 ℃ ( 32 to 122 ℉).
• Operating Humidity : Less than 80% R.H.
• Data Output : RS232 PC serial interface.
• Battery : 4 x 1.5V AAA ( UM4 ) batteries.
• Power Consumption :
  • Photo tachometer : Approx. DC 20 mA.
  • Contact tachometer : Approx. DC 9.5 mA.
• Size : 165 x 50 x 33 mm ( 6.5 x 2.0 x 1.3 inch ).
• Weight : 182 g ( 0.4 LB ).