Fenwal 12-H28021-005-08 Detect
The Fenwal 12-H28021-005-08 Detect-A-Fire is a high-performance, rate-compensated thermal detector engineered for critical fire suppression and alarm systems. This specific model is factory-set to activate at 600 degrees F with a precise +/-20 degrees F tolerance. Designed for industrial reliability, it features a close on rise contact operation, making it an essential component for actuating release devices or signaling overheat conditions in high-temperature environments. The unit is constructed with a 300 stainless steel shell and a coupling 300 stainless steel mounting head, providing superior corrosion resistance and structural integrity. Its orange color coding ensures quick field identification of its temperature rating. This vertical mount sensor utilizes a unique differential expansion design where the rapidly expanding outer shell and slower expanding inner struts accurately sense surrounding air temperature, effectively eliminating false alarms caused by transient thermal gradients or rapid air movement common in industrial processing.
Key Benefits:- Rate Compensation Technology: Provides a distinct advantage by responding accurately to ambient air temperature regardless of fire growth rate, outperforming standard fixed-temperature or rate-of-rise detectors.
- Self-Restoring Mechanism: The unit is fully testable and resets automatically once the temperature drops below the set point, requiring no replacement parts after activation.
- Hermetically Sealed Contacts: Internal contact areas are protected from dust, moisture, and contaminants within the stainless steel housing for long-term operational stability.
- Rugged Construction: Specifically engineered to withstand significant shock and vibration, making it suitable for demanding HVACR and industrial machinery applications.
- Versatile Integration: The 1/2-14 NPT threaded mounting allows for seamless installation into standard junction boxes or specialized conduit systems.
How does "close on rise" operation function in a fire system?
In a close on rise configuration, the internal contacts are normally open. When the ambient temperature reaches the 600°F set point, the expansion of the stainless steel shell causes the contacts to close, completing the circuit to trigger an alarm panel or suppression agent release.
Can this vertical mount unit be used in hazardous locations?
Yes, the vertical Detect-A-Fire series is designed for use in both ordinary and hazardous locations when installed according to local codes and mounted in an appropriately classified junction box.
Why is rate compensation better than a standard heat detector?
Standard detectors often suffer from thermal lag in fast-growing fires or false alarms during harmless temperature spikes. Rate compensation ensures the device triggers at the exact predetermined set point by ignoring transient warm air excursions up to 40°F per minute.
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.
Original: $479.34
-65%$479.34
$167.77Fenwal 12-H28021-005-08 Detect
The Fenwal 12-H28021-005-08 Detect-A-Fire is a high-performance, rate-compensated thermal detector engineered for critical fire suppression and alarm systems. This specific model is factory-set to activate at 600 degrees F with a precise +/-20 degrees F tolerance. Designed for industrial reliability, it features a close on rise contact operation, making it an essential component for actuating release devices or signaling overheat conditions in high-temperature environments. The unit is constructed with a 300 stainless steel shell and a coupling 300 stainless steel mounting head, providing superior corrosion resistance and structural integrity. Its orange color coding ensures quick field identification of its temperature rating. This vertical mount sensor utilizes a unique differential expansion design where the rapidly expanding outer shell and slower expanding inner struts accurately sense surrounding air temperature, effectively eliminating false alarms caused by transient thermal gradients or rapid air movement common in industrial processing.
Key Benefits:- Rate Compensation Technology: Provides a distinct advantage by responding accurately to ambient air temperature regardless of fire growth rate, outperforming standard fixed-temperature or rate-of-rise detectors.
- Self-Restoring Mechanism: The unit is fully testable and resets automatically once the temperature drops below the set point, requiring no replacement parts after activation.
- Hermetically Sealed Contacts: Internal contact areas are protected from dust, moisture, and contaminants within the stainless steel housing for long-term operational stability.
- Rugged Construction: Specifically engineered to withstand significant shock and vibration, making it suitable for demanding HVACR and industrial machinery applications.
- Versatile Integration: The 1/2-14 NPT threaded mounting allows for seamless installation into standard junction boxes or specialized conduit systems.
How does "close on rise" operation function in a fire system?
In a close on rise configuration, the internal contacts are normally open. When the ambient temperature reaches the 600°F set point, the expansion of the stainless steel shell causes the contacts to close, completing the circuit to trigger an alarm panel or suppression agent release.
Can this vertical mount unit be used in hazardous locations?
Yes, the vertical Detect-A-Fire series is designed for use in both ordinary and hazardous locations when installed according to local codes and mounted in an appropriately classified junction box.
Why is rate compensation better than a standard heat detector?
Standard detectors often suffer from thermal lag in fast-growing fires or false alarms during harmless temperature spikes. Rate compensation ensures the device triggers at the exact predetermined set point by ignoring transient warm air excursions up to 40°F per minute.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Fenwal 12-H28021-005-08 Detect-A-Fire is a high-performance, rate-compensated thermal detector engineered for critical fire suppression and alarm systems. This specific model is factory-set to activate at 600 degrees F with a precise +/-20 degrees F tolerance. Designed for industrial reliability, it features a close on rise contact operation, making it an essential component for actuating release devices or signaling overheat conditions in high-temperature environments. The unit is constructed with a 300 stainless steel shell and a coupling 300 stainless steel mounting head, providing superior corrosion resistance and structural integrity. Its orange color coding ensures quick field identification of its temperature rating. This vertical mount sensor utilizes a unique differential expansion design where the rapidly expanding outer shell and slower expanding inner struts accurately sense surrounding air temperature, effectively eliminating false alarms caused by transient thermal gradients or rapid air movement common in industrial processing.
Key Benefits:- Rate Compensation Technology: Provides a distinct advantage by responding accurately to ambient air temperature regardless of fire growth rate, outperforming standard fixed-temperature or rate-of-rise detectors.
- Self-Restoring Mechanism: The unit is fully testable and resets automatically once the temperature drops below the set point, requiring no replacement parts after activation.
- Hermetically Sealed Contacts: Internal contact areas are protected from dust, moisture, and contaminants within the stainless steel housing for long-term operational stability.
- Rugged Construction: Specifically engineered to withstand significant shock and vibration, making it suitable for demanding HVACR and industrial machinery applications.
- Versatile Integration: The 1/2-14 NPT threaded mounting allows for seamless installation into standard junction boxes or specialized conduit systems.
How does "close on rise" operation function in a fire system?
In a close on rise configuration, the internal contacts are normally open. When the ambient temperature reaches the 600°F set point, the expansion of the stainless steel shell causes the contacts to close, completing the circuit to trigger an alarm panel or suppression agent release.
Can this vertical mount unit be used in hazardous locations?
Yes, the vertical Detect-A-Fire series is designed for use in both ordinary and hazardous locations when installed according to local codes and mounted in an appropriately classified junction box.
Why is rate compensation better than a standard heat detector?
Standard detectors often suffer from thermal lag in fast-growing fires or false alarms during harmless temperature spikes. Rate compensation ensures the device triggers at the exact predetermined set point by ignoring transient warm air excursions up to 40°F per minute.
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.
