Schneider Electric (Barber Colman) AT-211 Shield

The Schneider Electric (Barber Colman) AT-211 Outdoor Bulb Shield is a critical hardware component designed for the rugged protection of remote sensing bulbs in demanding external environments. Measuring 2 x 11 3/4 inches, this aluminum bulb shield provides a robust mechanical barrier against physical impact, direct solar radiation, and corrosive atmospheric elements. Engineered specifically for HVAC outdoor sensor protection, the AT-211 shield prevents dirt buildup, rain, and snow from compromising the accuracy of temperature readings on outdoor air bulbs. This ensures that the building management system (BMS) receives precise data from Schneider Electric remote bulbs, maintaining overall system efficiency. For contractors performing field installations, the unit features a streamlined design for wall mounting, providing essential shielding for sensing elements against convective heat interference and environmental debris. Its high-durability outdoor bulb protection construction is built to withstand thermal and mechanical stress in mission-critical commercial and industrial HVACR applications.

• Environmental Protection: Shields sensitive remote bulbs from sun, rain, snow, and wind-borne debris.
• Accuracy Preservation: Minimizes direct solar gain and foreign matter accumulation to ensure precise ambient temperature sensing.
• Durable Construction: High-grade aluminum housing resists corrosion and survives extreme outdoor exposure.
• Universal Compatibility: Specifically sized at 11.75 inches to accommodate a wide range of standard Schneider Electric and Barber Colman sensing bulbs.

How does the AT-211 prevent false temperature readings?
By eliminating direct solar radiation and preventing the buildup of insulating dirt or ice on the bulb, the shield allows for accurate ambient air sensing without the "greenhouse effect" or lag caused by environmental contamination.

Can this shield be used for moisture-sensitive sensors?
Yes, while it primarily serves as a mechanical and solar barrier, its design helps deflect vertical precipitation, reducing the frequency of moisture-related sensor drift.

What are the mounting requirements for this outdoor bulb shield?
The AT-211 is designed for surface mounting on exterior walls. Professionals should ensure the shield is oriented to allow proper natural airflow around the sensing element for optimal response times.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.