Installing Retroreflective Photoeyes

What is the Haush Method? 

The Haush method was developed as a natural process for obtaining proper placement and alignment of the reflector for a retroreflective photoeye installation. In overhead doors, automatic gates, and even parking barrier applications, it is absolutely critical that photoeyes work reliably for the safety of the install and its users. 

5 steps for success

We will use the EMX IRB RET as an example here but the process should be universal.

  • Step 1:
    • Install the retroreflective photoeye and set the gain or sensitivity adjustment to 1/3 of the maximum.

  • Step 2:
    • Hold the reflector and stand 4-6 feet away from the installed photoeye. Position the reflector until the Green LED and Red LED on the photoeye are on and steady. Consult your specific photoeye manual for status identifiers

  • Step 3:
    • Slowly back up to the desired mounting location for the reflector while maintaining the active status indicator on the photoeye. For the IRB-RET, solid green and solid red LEDs. Once at the desired location, move the reflector up, down, left, and right to identify the active target area (usually about a 2-foot circle). If the photo eye loses signal before you arrive at the desired distance, start step two again with the sensitivity/gain set to 1/2 of its maximum and repeat step 3.

  • Step 4:
    • Once the target area has been identified, mount the reflector as close to the center of the target area as possible.

  • Step 5:
    • Once the reflector is aligned and securely mounted, increase the gain or sensitivity to the maximum setting.

Job Well Done!

We have found that this process gives our installers the best and most reliable Photoeye operation no matter the situation and results in far fewer callbacks. We always recommend using hoods as well, particularly if a wide variety of weather is expected.

We hope you find this helpful and always appreciate feedback so we want to hear from you if this worked, needed a bit of tweaking or you have an entirely different method that works better.

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