ACCUD AC-LT900 Laser Tachometer – Non-Contact RPM Meter
The ACCUD AC-LT900 Laser Tachometer is a professional non-contact digital tachometer designed for fast and accurate rotational speed measurement. With a wide measuring range of 2.5 to 99,999 RPM, it is ideal for measuring motors, shafts, fans, pulleys, spindles, pumps and other rotating machinery without requiring physical contact with the moving component.
Designed for industrial maintenance, engineering workshops and machinery inspection, the ACCUD AC-LT900 Laser Tachometer allows operators to measure rotational speed from a convenient working distance of 50 to 500 mm. The non-contact laser measuring system makes RPM testing easier, particularly when working with fast-moving or difficult-to-access rotating equipment.
The meter provides Real-Time, Maximum, Minimum and Average measurement functions, allowing operators to monitor changing rotational speeds and identify peak or minimum RPM values during operation. The ACCUD AC-LT900 Laser Tachometer can also recall the last measured value, making it convenient to review results after completing a measurement.
A built-in backlit digital display provides clear and easy-to-read results in workshops, factories, plant rooms and other low-light working environments.
For speeds below 1000 RPM, the meter offers a fine resolution of 0.1 RPM. At speeds of 1000 RPM and above, resolution is 1 RPM. This combination makes the instrument suitable for a broad range of machinery and preventative maintenance applications.
Compact, lightweight and powered by two standard AAA batteries, the ACCUD AC-LT900 Laser Tachometer is easy to carry between workshop and field inspection jobs. At only 106g, it provides a practical portable solution for technicians, engineers and maintenance professionals who regularly need to check machinery rotational speed.
Key Features
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Non-contact laser rotational speed measurement
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Wide 2.5–99,999 RPM measuring range
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Measuring distance of 50–500 mm
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Real-Time measurement function
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Maximum RPM measurement
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Minimum RPM measurement
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Average RPM measurement
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Last measurement recall function
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Backlit digital display
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Resolution down to 0.1 RPM
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Compact handheld design
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Lightweight at only 106g
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Powered by 2 × AAA batteries
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Ideal for industrial and workshop applications
Technical Specifications
| Specification | Details |
|---|---|
| Brand | ACCUD |
| Model / Part Number | AC-LT900 |
| Product Type | Laser Tachometer |
| Measuring Range | 2.5–99,999 RPM |
| Resolution Below 1000 RPM | 0.1 RPM |
| Resolution ≥1000 RPM | 1 RPM |
| Accuracy Below 1000 RPM | ±(0.1% + 5d) RPM |
| Accuracy ≥1000 RPM | ±(1% + 5d) RPM |
| Measuring Distance | 50–500 mm |
| Functions | Real-Time / Max / Min / Average |
| Display | Backlit |
| Power Supply | 2 × 1.5V AAA Batteries |
| Dimensions | 127 × 56 × 30 mm |
| Weight | 106g |
Typical Applications
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Electric motors
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Fans and blowers
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Rotating shafts
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Machine spindles
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Pumps
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Pulleys
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Industrial machinery
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Manufacturing equipment
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Preventative maintenance
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Mechanical servicing
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Engineering workshops


