What is difference between IR and UV flame detector?

Unlike IR energy emitted by flame, the UV radiation emitted is readily absorbed and attenuated by most hydrocarbon substances existing between the sensing element and the flame – whether airborne like vapour, oil mist, and smoke and certain other chemicals or deposited on surfaces in the optical path of the detector …

How does a UV IR flame detector work?

A UV/IR flame detector consists of ultraviolet (UV) and infrared (IR) sensors that are joined together in a single apparatus. UV sensors work by detecting the UV radiation emitted by the flame and are sensitive to a wide range of flammable fuels including hydrocarbons, sulfur, hydrazine and ammonia.

What kind of light does a flame detector detect?

The most popular systems use optical methods to detect flames; that is, they detect the absorption of light at specific wavelengths. Two common optical flame detector types are (1) combination ultraviolet/infrared (UV/IR) and (2) multi-spectrum infrared (MSIR).

Can IR sensors detect fire?

Infrared thermal cameras MWIR infrared (IR) cameras can be used to detect heat and with particular algorithms can detect hot-spots within a scene as well as flames for both detection and prevention of fire and risks of fire.

What is UV IR?

Light (also referred to in professional literature as radiation) is best thought of as a spectrum consisting of ultraviolet light (UV) at the short end, visible light in the center, and infrared (IR) wavelengths at the long end.

How does a UV scanner work?

The UV Scanner detects the ultraviolet radiation emitted by combustion flames. The flame supervision is designed to detect or not to detect a flame. The burner management system makes a decision based on the flame or no flame input from the UV scanner and allows or does not allow fuel flow to feed combustion.

How do you install a flame detector?

The flame detector should be positioned at the perimeter of the room, pointing directly at the anticipated flame or at the centre of the area to be protected. If the detector cannot ‘see’ the whole of the area to be protected, one or more additional detectors may be required.

What is IR 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). It can be used in fire fighting robot or heat seeking robot.

Does fire give off UV light?

A normal orange flame may burn at 600 K or so. It isn’t hot enough to radiate UV rays but it does radiate in the visible and infrared parts of the electromagnetic spectrum.

Is UV light the same as red light?

Red Light Beds In fact, they don’t emit any UV light at all. Red light therapy, also ironically known as red light tanning, uses LED light strips to emit a low wavelength LED red light. This is outside of the UV wavelength range and doesn’t stimulate melanin production which is what creates that summer glow.

What is a fundamental difference between IR detector and UV VIS detector?

In general, UV/vis detectors convert a photon of light into an induced current. Conversely, IR detectors use the temperature dependence of resistance of metals to measure a change in temperature as a result of a change in current/potential. (b) Explain the operation of one type of IR detector.

How do you test a flame detector?

Point at the Flame detector within the test range and on the central axis of the cone of vision of the detector. Press the switch and wait until the Flame detector is activated. For IR or UV/IR detectors the switch should be intermittent operated in a 1 second pulse (0.5 sec on, 0.5 sec off).