Suitable for many different type of burners, as Pelltek, Ferroli, Axinar, Vernon Fire.
This text is from Brahma original catalogue:
Introduction
Flame detection in fuel oil burners occurs by means of
sensors detecting the presence of flame through an electrical signal, which can
be used by ignition and control devices. Generally, to detect the presence of
flame in these appliances a photocell is used, which exploits the light generated
by the flame itself.
Description
These are the most used flame sensors for fuel oil
burners. Photocells vary their ohmic resistance according to the light incidence;
this property is exploited to detect the occurred flame generation in burners.
Various types of photocells are available, differing
from each other in their application and casing. Fig.1 shows the FC7, FC8 and
FC9 photocells; the difference between FC7 and FC8 models consists in the
detecting element, which lights up laterally in the FC7 and frontally in the
FC8. The FC9 photocell is suitable to be light up laterally; an inbuilt diode enables
this photocell to be used with particular devices (for example Brahma 32C,
32CN, GS2, GP2. ). Fig.2 shows the FC11, FC13 and FC14 photocells, differing
from each other only in the fixing system, as both of them light up laterally
and frontally. Fig.3 shows FC14 and FC14L photocells, differing from each other
in the case length, even if both of them are able to be light up laterally and
frontally. They are provided with a connection plug which facilitates assembly
and maintenance operations. The standard length of the photocell connecting
cable is 600mm; the operating temperature range ensuring the longest life of
flame sensors (approximately 50,000 hours) is comprised between 0°C and +60°C.
Sensitivity
The sensitivity of photocells can be identified
through the colour of their casing, according to the following directions: /R
Red
The colour red indicates photocells with standard
sensitivity, the colour blue corresponds to the most sensitive photocells, whereas
the colour green marks the least sensitive photocells.
For the right coupling between photocell and control
device please refer to our technical literature regarding control devices
making use of these flame sensors.