Cost-effective laser micrometer by Acuity can measure in larger spans

The Acuity AR651 laser micrometer, available from Durham Instruments.

Acuity is a major manufacturer of industrial test and measurement devices that are available in Canada from Durham Instruments. The former company uses the latest CCD digital technology in its AR651 laser micrometer, which is used to measure diameters, heights, and gaps. This instrument has larger measurement spans than most micrometers do.

The AR651 laser micrometer is an innovative cost-effective measuring solution based upon the “shadow” principle, an innovative means of processing and calculating measurement.

Four different measuring ranges

The “shadow” principle involves placing a laser or LED light through a collimated lens to create a large light beam, which the micrometer transmits onto the CCD array. Placing an object in the device’s measurement span causes a shadow to form on the array. The instrument then processes the image and calculates the target measurement.

The AR651 is the perfect choice for many applications, including displacement measurement, profile measurement, sorting, gap measurement, measurement of several axes, and determining the diameters of large objects. This versatility makes it suitable in several industries, including general manufacturing, aerospace, automation, education, and research and development.

This laser micrometer is available with four different measuring ranges – 25, 50, 75, or 98 millimetres (mm) – and has a sampling rate of up to 2,000 hertz. Other advantages include its telecentric lens and compatibility with RS232, RS485, or Ethernet outputs, and multi-coordinate systems are available. Other options include:

• Class 1 laser or LED light;
• 4-20 mAmp or 0-10-volt analog output;
• Logical outputs;
• Trigger inputs;
• Air-knife options; and
• Colour touchscreen programmed for AR651 models.

Depending on the measuring range of the device, minimum object size ranges from ½ to two mm, with accuracy from plus or minus five to plus or minus 20 micrometres. The micrometer is housed in aluminum and resists vibration, shock, high temperature and relative humidity to certain degrees.

About the companies

Based in Portland, OR, Acuity has developed laser distance sensors and laser measurement systems since 1992.

Durham Instruments is a major Canadian distributor of electronic quantitative measuring instruments, with headquarters in Pickering, Ont.

For more information, contact Durham Instruments.

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