LHS Cable Fire Detection

Introduction

Linear Heat Sensing (LHS) (also known as Linear Detection Wire or Linear Heat) is a very commonly used method of fire detection. It can detect a fire anywhere along the length of the cable, and can be of lengths in excess of a kilometer.

Applications can range from building fire alarm systems to mobile plant machinery.

Advantages :

• Simple in construction
• Controller complexity is low
• Controllers are available with distance location to the point of the fire, also with 4-20mA output
• Easily deployed
• Can cover a large area
• Small and Compact
• Supported by the majority of fire controller panels

Advantages :

• Slow response time – up to 30 seconds
• Lack of information about fire