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  1. OMH high-accuracy laser
  2. Setup and support
  3. Installation guidelines

Installation guidelines for the OMH family

For best performance of the OMH family of laser distance sensors, please follow these guidelines. Further information can be found in the operating instructions on the Downloads tab of the datasheet.

Should you need additional support, feel free to contact our service center at 888-704-0702 and speak to one of our applications engineers.

Influence of ambient light and reflections from shiny objects

Because sunlight contains the same wavelengths of light as photoelectric transmitters, very bright ambient light can often fool the receivers. Photoelectric sensors are generally sensitive to direct radiation of light sources since there may be enough light of the specific wavelength reflecting back to the receiver to trigger a false detection. 

  • When possible, mount with the front lens facing down or sideways away from windows or other direct light sources.
  • When not possible, test the application at various times of the day and provide shading baffles as necessary.
  • When the target object is very reflective, mount the sensor at a slight angle (10 - 15 °) to avoid inaccurate measurement.

Alignment of sensor and target

In most cases, the measuring axis of the sensor should be aligned perpendicular to the target surface. Take care in the specific examples shown to provide a larger surface area for the most accurate measurement.

  1. Objects with sharp color changes in the direction of travel
  2. Objects with step changes in distance in the direction of travel
  3. Objects with round surfaces
  4. Applications to measure object contours

Mutual interference

Most photoelectric sensors do not have the ability to tune themselves to different frequencies to avoid interference from other sensors that are mounted closely together. If the transmitted light from one sensor happens to fall on the receiving element from a nearby sensor, an incorrect measurement or false signal can occur.

The OMH laser sensors have fairly small light spots (see specific datasheets for the spot diameter at maximum range), so this type of interference is unlikely. However, nearby sensors may be tilted as necessary to avoid interference.