How should a flame detector fire detector be tested?
– The portable flame sensor test unit should activate the flame detector at a distance of 3m within 20 seconds. – The detectors are fitted with internal IR LED’s that can be activated to optically test the detector. (The above tests apply to detectors at room temperature under normal factory lighting conditions.
Where are fire flame detectors used?
Flame Detection Industrial and commercial applications include oil and gas pipelines, turbine enclosures, off-shore platforms, automotive manufacturing facilities, aircraft hangers, munitions plants, nuclear facilities, and many, many more.
Which is one type of flame detector?
There are four primary optical flame-sensing technologies in use today: ultraviolet (UV), ultraviolet/infrared (UV/IR), multi-spectrum infrared (MSIR), and visual flame imaging. They are all based on line-of-sight detection of radiation emitted in the UV, visible, and IR spectral bands by flames (see Figure 1).
What are the types of flame detectors?
There are three types of flame detectors currently available. They are Infrared (IR), Ultraviolet (UV), and a combination of UV and IR.
How does a flame detector work?
Flame detectors comprise an electronic circuit with an electromagnetic radiation receiver. They are activated when they receive electromagnetic radiation from one or more defined wave lengths according to their design in the UV or infrared spectrum.
Which color of the flame is hottest?
When all flame colors combine, the color is white-blue which is the hottest. Most fires are the result of a chemical reaction between a fuel and oxygen called combustion.
What are the specifications of a flame sensor?
The IR flame sensor is used to detect the presence of fire or other infrared source (Flame or a light source of a wavelength in the range of 760 nm to 1100 nm can be detected)….Specifications.
|Range||760 nm to 1100 nm (Light Wavelength)|
How do I choose a flame detector?
Flame Sensing Technologies Detection instruments should always be selected to suit the requirements of the application which commonly include fuel type(s), fire size, maximum detection range, Field of View limits, fire alarm response time, and potential nuisance or false alarm sources.
How long does a flame sensor last?
Generally speaking, the flame sensor should be replaced every two to three years as preventative maintenance. Some technicians also recommend changing it any time that there is a flame current issue.
How do you know if a flame sensor is bad?
How do I know if my furnace flame sensor is bad?
- Switch off the power to your furnace.
- Close the gas valve.
- Take out the mounting screw.
- Carefully pull out the sensor.
- Inspect the sensor: if the insulation is intact but appears sooty, burnt or slightly corroded, it might only require cleaning.
What’s the best way to test a flame detector?
Take UV / IR Testing Torch for testing of Flame Detector. Before applying UV / IR rays to the Flame Detector, clean the detectors display by cotton cloth. It should be always cleaned for detecting the UV / IR rays. Otherwise Fault LED indication appears. Apply the UV /IR rays from UV / IR torch to the Flame detector.
Which is the most sensitive infrared flame detector?
The point-type infrared flame detector consists of one infrared sensors and optical filters. The main sensor generates CO from the combustion of hydrocarbons, the emission spectrum (4.4 microns) has the highest sensitivity.
What kind of flame detectors are used in furnaces?
The boiler, furnace, oven, or kiln has a flame detector installed at the factory. The type of detector used depends on the type of flame, the fuel used, the size of the burner, and the ease or difficulty in viewing or sensing the flame.
What kind of sensors are used to detect fire?
Detects hard-to-see hydrogen flames and other non-carbon-based flames. Often used for applications such as refineries, turbine enclosures, hydrogen storage and battery rooms. Detects hydrocarbon fires by correlating signals from both an ultraviolet (UV) and infrared (IR) sensor. Often used for applications such as munitions and aerosol fill.