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ACCUPROFILE 820 LASER SCANNER
The AccuProfile 820 Laser Scanner creates 2D profiles and 3D point cloud data using laser triangulation measurement principles. Although slower than the AP620 model, the AP820 is more compact and performs very well on shiny or jagged targets. Edge scanning pose little problem due to the units auto gain and high dynamic range.
The AccuProfile™820 Laser Scanners uses triangulation measurement principles to measure displacements and surface heights by emitting a beam of visible laser light that creates a line on a target surface. Reflected light from the surface is viewed from an angle by a two-dimensional CCD detector array inside the AP820 sensor. The two-dimensional contour profile is calculated by the scanner’s microprocessor from the pixel data from the diffusely – reflected laser line. The height distance profile is transmitted through Ethernet communications to a PC computer. Real-time 3D profiling is created by synchronizing the position of the scanner with encoder inputs from conveyors, linear stages or robotic movements. A variety of models are specified, each to allow a different measurement range and field of view.
The scanner’s sophisticated CCD detector affords the highest dynamic optical range, allowing these devices to measure almost any kind of opaque surface, shiny or matte, bright or dark. Additionally, the sensor performs well on sharp edges and transitions, where other sensor may produce noisy results. All of this is achieved through relatively low laser powers and permissible laser classes.
There are several different case designs for the AP820 series of laser scanners. See the photo above. Each has its own industrial design attributes and mechanical dimensions. Common accessories include a cooling module for hot environments and a protective lens shield.
The AR2000 measures from 0.1 meters (4 inches) to 500 meters (~1,640 feet) with an accuracy of +/- 1mm (~.040 inches). It is also designed to work well in brightly lit areas and on hot surfaces. The AR2000 has a sampling speed of up to 100 Hz.
The AR2000 has a Class 2 visible laser diode (red) for simple aiming and setup.
See the technical document download area for more information.
Acuity offers the following standard and optional outputs for the AR2000 laser rangefinder devices:
Standard RS-232 Serial Output
All sensors come with an RS-232 serial output on the 2m (6 foot), 9 pin cable that connects to PC style serial ports after the user attaches a DB9 connector. Serial output is ASCII and may be configured as either decimal or hexadecimal. The maximum baud rate is 38400 baud.
Standard RS-422 Serial Output
For long distance communications (more than 20 to 30 feet, depending on the baud rate), the RS-232 serial output may be replaced with an RS-422 serial output. The available sample rates, formats and software configuration commands are all the same as for the RS-232. Acuity recommends an RS422 to RS232 converter to monitor the interface from a PC computer serial port.
Standard Current Loop Output
A 4-20 milliamp current output is a standard output for the AR2000 laser distance sensor. The zero and span for the current loop output may be set at any location.. The span point (20 mA) may be made closer than the zero point if desired. The 4-20 mA output has a maximum voltage capability of 10 volts, and it is suggested that a 400 to 500 ohm load be used at the reading instrumentation for best accuracy.
AP820 LASER SCANNER OPTIONS AND ACCESSORIES
SPECIALTY ITEMS FOR YOUR APPLICATIONS
The AccuProfile 820 scanner is standard with ethernet interface and a compact IP64 aluminum case. We offer options to permit scanner installation in harsher environments. Contact us if you have any questions.
The AP820 is standard with 2m power/control and Ethernet cables. Other cables are offered in 4, 8, 10, 15 and 20m lengths. We offer standard PVC jacket or metal-mesh protective exteriors.
EXTERNAL COOLING MODULE
This external cooling module allows either air or water cooling connection. The module mates directly to the side of the scanner housing and extends the temperature use up to 400°C (752°F)
Protective shield for scanner glass windows. This scanner option mounts to the front contours of the laser scanner to shield it from debris. The shield has windows aligned with the two scanner windows.
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