SIEMENS Photocell Model QRA2

Guide to choosing and buying SIEMENS Photocell Model QRA2

Siemens is one of the successful manufacturers of monitoring and automation control equipment such as photocells or electronic eyes, which relies on the modern technical knowledge of Europe, experienced specialists as well as advanced machinery and equipment of quality products in line with the highest quality assurance standards in Europe. Produces.
The Siemens QRA2 photocell is an electrically conductive silicon-like semiconductor that converts light into photocells as electrical energy.
Photocells or electronic eyes are widely used in industry, so from solar panels to light-sensitive eyes can be placed in the family of photocells. In industry, a type of photocell is used in the burner that can detect the on and off the flame of the burner and commands the relay to cut off and connect the flow of fuel or spark.

Performance of SIEMENS Photocell Model QRA2

• In the Siemens QRA2 photocell with this type of flame monitoring, ultraviolet rays emitted by gas or oil flames are used to generate the flame signal. By irradiating in the range of 190 to 270 nm, a current is triggered in the burner detector circuit. UV cells do not react to daylight or light emitted from the boiler.
• This electric eye or photocell is installed inside a chamber in the body of the burner so that it can see inside the flame. In the construction of the photocell, semiconductors such as germanium are used, which are excited by the light of the electrons of the external circuit and according to the conductivity, the electric current passes.
• A photocell consists of a small ceramic plate on which a light-sensitive material of cadmium sulfide is coated and connected to a relay.
• When light is exposed to cadmium sulfide, its electrical resistance is greatly reduced. Therefore, when the torch is on, the photocell receives light, and the resistance of the light-sensitive material decreases, resulting in a weak current in the relay circuit. Is added and no current reaches the relay.
• Used for Siemens LFL, LFE, LMG, LFE10 timers

Dimensions of SIEMENS Photocell Model QRA2

Warranty and after-sale services of SIEMENS Photocell Model QRA2

The company approves the originality and physical health of the Siemens Relay for SIEMENS Photocell Model QRA2.
In the reference site and DAMATAJHIZ store, various types of Siemens burner relays have been provided for you, dear customers, in order to create a good feeling of optimal and smart purchase of Siemens relay.