Fixed heat detector

This is the most common type of heat detector. Fixed temperature heat detectors. The heat detectoris available with a white plastic reversible mounting plate.

Theplastic plate can be used for either flush or surface mounting. Combination heat detectors provide both fixed and rate-of-rise detection. This enables the heat detector to communicate an alarm to the central control panel prior to reaching its fixed set point for high rates of rise, providing a timely response to both rapid and slow temperature increases. They are very useful in areas where there are high levels of fumes and dust. There are two methods for detecting fire from the presence of heat.

Once the temperature rises above 1degrees F (C) or 1degrees F (C), the heat detector will send a signal to an alarm panel and trigger an alarm. A fixed temperature heat detector is designed to alarm at a set temperature. Heat detectors can be fixed -temperature or rate-of-rise. RATE-OF-RISE: A temperature increase at the sensor of 15°F (9°C) or more per minute activates the rate-of-rise feature.

B-PL Series heat detectors offer fixed temperature or combi-nation rate-of-rise and fixed temperature detection. This closes the contacts in the sensor to transmit the alarm condition to the fire alarm control panel. What are two type of heat detectors are? What is a fixed temperature detector? Why to use a heat detector instead of a smoke detector?

Fire detector with decentralized intelligence, automatic function self-test, alarm and operations data storage and alarm display. Using a bi-metal disc as a heat sensing element, an alarm is initiated when the air temperature exceeds the unit’s rated level. Only when the air temperature decreases below the rated level will the detector automatically reset.

Both technologies offer their own benefits which is why Honeywell decided to keep them bundled in a single sensor. The rate-of-rise heat detection requires a 15F degrees increase within minute. This linear cable can detect a fire anywhere along its entire length and is available in multiple temperatures. At Life Safety Consultants, we have a wide variety of excellent products to choose from. With the Edwards EST SIGA-HRS, an intelligent heat detector , you will have access to the features and power needed to ensure you will always be alerted at the first signs of a fire.

The FST-851R is a Rate-of-Rise Thermal Detector for use with ONYX Series panels. Because of thermal lag, however, if the rate of temperature rise is fast, the detector may actually alarm when the room temperature is higher than the set point. The FST-851H is a High Temperature Thermal Detector for use with ONYX Series panels. This rate compensated device combines the best features of both fixed temperature and rate-of-rise detectors. Typically specified to 100°F above ambient.

A new modern, sleek, contemporary design and advanced thermal technologies make the H3Series ideal for both system operation and building design. DETECT-A-FIRE detectors are rate-compensated for a quicker response. Models include the H365(A) fixed heat detector , H365R(A) rate-of-rise heat detector and H365HT(A) high temperature heat detector. They usually get activated when the temperature rises above 1degrees.

Whenever the temperature or heat changes, then the eutectic point of heat sensitive eutectic alloy changes from solid to liquid and thus fixed temperature detectors operate. Generally, for electrically connected fixed temperature point is 136. The Chemetronics’ HD6Series HEAT DETECTORS are attractive, durable and feature combination rate-of-rise and fixed -temperature models. Rate-of-rise elements detect heat by responding to a rapid temperature increase. A heat detector is a fire detection device.

Since it does not detect smoke, it is therefore not meant as a replacement for a smoke detector. Thermal lag” occurs when rapid temperature increases cause the heat detector to alarm at a temperature higher than its set point. The detector shall be either a single-circuit or a dual-circuit type, normally open.

Heat Detectors for Fire Protective Signaling Systems.