Fenwal 12-E27120-000-05 Sensor

The Fenwal 12-E27120-000-05 Detect-A-Fire is a high-precision, vertical mount rate-compensation heat detector engineered for rapid response in commercial and industrial fire protection systems. Operating with an open on rise contact configuration, this unit is calibrated to activate at 225 degrees F with a specialized tolerance of +7°F/-8°F. Built for harsh environments, it features a corrosion-resistant 300 stainless steel shell and a hex brass mounting head for secure mechanical installation. As a rate-compensation sensor, it eliminates the thermal lag typical of conventional bimetallic detectors, ensuring the inner sensing struts react immediately when the ambient air temperature reaches the predetermined set point. The white color coding allows for quick field identification of the temperature rating, making it a reliable standard for hazardous location heat detection. This Fenwal heat sensor is essential for contractors requiring a fire alarm initiating device that prevents false alarms caused by transient temperature spikes while maintaining a fast response time index.

• Rate-Compensation Technology: Provides accurate thermal detection by compensating for thermal lag, ensuring the Fenwal 12-E27120-000-05 triggers precisely at its set point.
• Industrial Build Quality: Utilizes a 300 series stainless steel shell to protect sensitive internal components from moisture and corrosive atmospheres.
• Reduced False Alarms: Designed to ignore rapid ambient temperature fluctuations that do not reach the specific 225°F cracking point.
• Easy Identification: Features industry-standard white color coding and a 1/2-14 NPT thread for seamless integration into existing fire suppression systems.

Common Technical Questions

What is the difference between this rate-compensation sensor and a fixed-temperature sensor?
Unlike standard fixed-temperature units, this rate-compensation detector responds to the surrounding air temperature regardless of how fast the fire develops, whereas traditional sensors often suffer from "thermal lag" which delays activation.

Can the 12-E27120-000-05 be mounted horizontally?
No, this specific model is designed and calibrated for vertical mounting. Installing this sensor in a horizontal orientation can affect the fast response time index and compliance with local fire codes.

How do I verify the temperature rating in the field?
The Fenwal Detect-A-Fire series uses color-coded leads or shells; the white color coding on this unit signifies a 225 degree F activation threshold.

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.