MIL-PRF-32225

Abstract

This specification covers the performance requirements for spot-type heat sensors (see 6.8.9 and 6.8.10) and their universal bases and junction boxes, which are components of an overall Advanced Fire and Smoke Sensor System (AFSSS) for use on naval ships. These heat sensors, universal bases, and junction boxes may be of commercial-off-the-shelf (COTS) design, but must be rugged (see 6.8.19) enough to meet all of the requirements of this performance specification and the rigors of Navy shipboard service. Performance requirements for the other associated AFSSS components (e.g., ionization (see 6.8.11) and photoelectric (see 6.8.14) smoke sensors (see 6.8.23), flame detectors (see 6.8.7), Flame Detector Zone Modules (FDZM) (see 6.8.8), Switch Closure Zone Modules (SCZM) (see 6.8.25), isolators (see 6.8.12), and alarm panel (see 6.8.2) are contained in their respective AFSSS specifications.<b><u>Intended Use:</u></b> The heat sensor is a sensing device that is effective at detecting high temperatures above the sensor&#8217;s fixed temperature alarm threshold. In addition, heat sensors can also detect a rapid rise in temperature, even if the actual temperatures being measured are always below the fixed temperature alarm threshold setting. Heat sensors can be used for detecting flaming fires in shipboard compartments not suitable for smoke sensors due to potential false alarm problems from particulates in the air. In addition, they are ideal for sensing high temperature conditions caused by heat generated by a fire in an adjacent compartment. Heat sensors are one of several types of sensors used in the AFSSS and intended for use on Navy ships.<br>