FL500 UV-IR Flame Detector

FL500 UV/IR Flame Detector with false alarm immunity

The FL500 UV-IR Flame Detector monitors for radiation emitted by a flame in both the ultraviolet (UV) and infrared (IR) spectral ranges. This UV/IR combination provides a fast response time and increased false alarm immunity against sources of radiation for reliable protection.

A UV/IR flame detector combines an ultraviolet sensor for quick response and an infrared detector that monitors radiation emitted by a flame. This combination offers increased immunity, operates at faster speeds and is suited for both indoor and outdoor use.


Every two minutes, a built in self-check known as Continuous Optical Path Monitoring (COPM) performs an optical and electrical check to ensure the optical path is clear and the electronic circuitry is operational.


FL500-Flame Detector


The FL500 UV/IR detector is designed to detect fires while maintaining false alarm immunity.

Download the FL500 UV-IR Flame Detector Brochure


Safely test your flame detector to ensure proper function and operation of your complete detection system. The FL500 and FL4000H can be tested with the explosion proof TL105 Test Lamp, which simulates the flickering of a fire and provides a high-energy,  broadband radiation source that emits energy in both the ultraviolet and infrared spectra to safely activate our flame detectors. This allows the detector to be tested under real fire conditions without the associated risk of an open flame.


View more information on MSA’s website


FL4000H MSIR Flame Detector

The FL4000H is a multi-spectrum infrared (MSIR) flame detector that provides superior false alarm immunity with the widest field of view. The FL4000H employs a multi-spectral optical IR sensing array with a sophisticated Neural Network Technology (NNT) system to reliably discriminate between actual flames and the vast majority of false alarm sources.

TL105 Test Lamp

The TL105 is a battery operated test lamp designed specifically to test General Monitors Flame Detectors. The TL105 is an explosion-proof test lamp that can be used with the FL500 UV/IR, FL4000H MSIR flame detector as well as any of the FL3100 Series Flame Detectors. The TL105 operates up to 10 meters from the flame detector.

Flame Detection

Delivered Across Australia & NZ Direct From Sydney, Melbourne or Perth Warehouses