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轉(zhuǎn)速計(jì) 品牌： Terahertz Technologies Inc. ......

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LT-880 Fiber Optic Laser Tachometer

● Remote Sensing of RPM and Angular Vibration

● No Special Reflective Tape Required

● Large 5 Digit LED Display

● Sensing rates to 40 000 PPS

● Ni-mH Powered with Fast Charger

● Measures RPM, RPS, PPS

● Entry of number of encoder sectors

LT-880 Laser Tachometer is a hand-held, battery operated device that senses the passage of reflective/non-reflective

markings on a rotating or linearly translated piece of machinery in order to determine the target’s rotational rate or its linear velocity.

The sensing head is remote from the electronics package and is fiber coupled. This permits measurement of objects in hostile environments or in hard-to-get-to locations. The sensed change in reflectivity from black to white generates a transition at its output. This TTL/CMOS compatible signal may be utilized by a spectrum analyzer, computer or electronic counter in order to provide information concerning vibration, angular or linear velocity of the machinery under test. The high speed of the unit, 40, 000 PPS, coupled with its small spot size can provide high resolution measurements unattainable with conventional incandescent source tachometers.

A six digit LCD display indicates the rate of passage of the white/ dark areas of the encoder and registers the results in units of revolu- tions per minute, (RPM), revolutions per second, (RPS), or pulses per second (PPS). The reading is updated twice per second. The user may input the number of pulses per revolution of the encoder for use in the subsequent calculations. They may range from 1 pulse per revolution to 255 pulses per revolution.