Continuous Heat Sensor
Continuous Heat Sensor
Modern fire detection systems require solutions that can operate continuously, reliably, and accurately in environments where optical detectors may not be suitable. In complex, multi-structured areas with limited visibility or confined geometries, temperature-based detection provides a critical advantage. Continuous Heat Sensor systems are designed to detect abnormal temperature rises directly at the source, enabling early fire detection and long-term operational safety in demanding military, industrial, and aviation applications.
Continuous Heat Sensor
The Continuous Heat Sensor uses continuous thermal sensing wires to detect fire in the areas where they are installed. By fastening the sensor wire directly onto surfaces that require protection, the system enables localized and continuous temperature monitoring across the protected zone.
Fire detection can occur within 5 to 20 seconds, depending on the fire’s magnitude, class, and point of ignition. Detection temperature thresholds are configurable between 50°C and 250°C, based on customer requirements. The sensor transmits detection temperature data to the control unit and can also measure ambient temperature.
Unlike point-based or optical detectors, the Continuous Heat Sensor is especially suitable for complex and multi-structured environments where UV-IR detectors may not provide reliable coverage.
Purpose of the Continuous Heat Sensor
The primary purpose of the Continuous Heat Sensor is to continuously monitor temperature changes and detect abnormal heat rise that may indicate fire or overheating.
This technology is widely used in the aviation industry to monitor critical components such as:
High-temperature engines
Exhaust systems
Aerospace structural components
By detecting temperature fluctuations in real time, the system helps prevent overheating, component failure, and potential fire hazards—ensuring operational safety under extreme conditions.
Where to Use Continuous Heat Sensors
Continuous Heat Sensors are suitable for a wide range of applications, including:
Tank engines
Electrical panels
Generators
Aircraft engines and exhaust systems
Military aircraft, spacecraft, and satellite systems
Industrial equipment exposed to high temperatures
They are particularly effective in environments where continuous monitoring is required and where optical flame detection is impractical.
Types of Continuous Heat Sensor Wires
Continuous Heat Sensor systems are available in two primary types:
Thermocouple-Based Sensors
These sensors measure temperature using electrical potential differences generated by dissimilar metals. They are ideal for high-temperature environments such as aircraft engines and exhaust systems.
Resistance Temperature Detector (RTD) Sensors
RTD-based sensors use heat-sensitive resistance elements and provide high-precision temperature measurement, longer lifespan, and reduced maintenance requirements.
The choice between thermocouple and RTD depends on application needs, temperature range, and accuracy requirements.
Key Features of the Continuous Heat Sensor
Continuous temperature monitoring across the entire sensor length
Fast detection time: 5–20 seconds depending on fire conditions
Wide operating temperature range: -55°C to +250°C
Detection temperature range: 50°C to 250°C (configurable)
Multi-use capability: Continues operation after each activation
Suitable for complex environments not ideal for optical detectors
High durability: Resistant to wear and harsh conditions
Technical and Functional Characteristics
Self-repairing capability: Returns to normal operation after exposure up to 870°C
Detection continuity: Can still detect temperature changes even if the wire is cut
Chemical resistance: Resistant to chemical actions
Grounding specification: Integrated grounding capability
Flexibility: Elastic structure for easy installation
Thickness: 6 mm
Coating material: Inconel coating
Measurement type: K-type thermocouple
Storage temperature: -55°C to +80°C
Test Standards and Compliance
Continuous Heat Sensor systems are tested according to internationally recognized aviation and military standards, including:
DO-160 – Environmental testing for aircraft electronic equipment
MIL-STD-810 – Environmental durability (shock, vibration, temperature, humidity)
SAE Aerospace Standard AS5420 – Design and quality requirements for aerospace heat sensors
ASTM E2358 – Thermal property testing methods
Compliance with these standards ensures reliability and safety in extreme operating environments.
What Does a Continuous Heat Sensor Do?
Continuous Heat Sensors constantly measure temperature along their entire length and provide early warning in case of abnormal heat rise.
Their main functions include:
Continuous temperature monitoring
Early detection of overheating or fire risk
Triggering alarms through control units
Preventing component damage and fire escalation
They are essential safety components in aviation, military, and high-temperature industrial systems.