Flame Detectors | Photocells 

Photocells and flame detectors are designed to detect the safe operation of the burner. When the photocell is coupled with a suitable flame controller they produce a signal to allow the burner to continue to run in the presence of a flame, or to shut it down safely in the absence of a flame.

Photocells or flame detectors are generally only used where a ‘fail safe’ needs to be installed for commercial and industrial boilers.

The photocell or flame detectors job is to allow the flow of current and to convert AC current to DC current when it detects the presence of a flame.


UV Sensors

UV sensors have a tube that responds to ultraviolet radiation, this radiation emitted by the flame is then picked up by the UV sensor and tells the flame controller that there is a flame present and to carry on operating.

There are a few drawbacks to UV sensors though, one is that the UV sensors sometimes pick up radiation from non-flame related UV sources such as cosmic, gamma, and x-ray radiation. Despite this, countermeasures can be taken to ensure that there is always a correct reading of the flames presence or absence, these include:

  • The UV sensors view of the first third of the flame must be unobstructed.
  • The sensor should not sight the ignition spark.
  • The UV sensor cannot be subjected to excessively high temperatures.

Infrared Sensors

Infrared sensors can be used with either gas or oil flames, this is due to the characteristics of the flame, more than 90% of the flames radiation is infrared. This results in the infrared flame detectors being able to operate with a very high-intensity flame or a very weak one.

For the flame detector to work though, the sensor must have a good view of the flame, the infrared sensor must be protected from any direct flames, and the flame detector leads must be wired correctly according to standard procedure.


Why Buy Photocells From Power Heating Plants?

At Power Heating Plants, we value how precious time is and the importance of getting you back up and running as quickly as possible. With our knowledge and stock combined, we can get you back up and running with as little downtime possible. Did we mention we also have some of the most competitive prices for photocells and flame detectors on the web?

Flame Detectors | Photocells 

Photocells and flame detectors are designed to detect the safe operation of the burner. When the photocell is coupled with a suitable flame controller they produce a signal to allow the burner to continue to run in the presence of a flame, or to shut it down safely in the absence of a flame.

Photocells or flame detectors are generally only used where a ‘fail safe’ needs to be installed for commercial and industrial boilers.

The photocell or flame detectors job is to allow the flow of current and to convert AC current to DC current when it detects the presence of a flame.


UV Sensors

UV sensors have a tube that responds to ultraviolet radiation, this radiation emitted by the flame is then picked up by the UV sensor and tells the flame controller that there is a flame present and to carry on operating.

There are a few drawbacks to UV sensors though, one is that the UV sensors sometimes pick up radiation from non-flame related UV sources such as cosmic, gamma, and x-ray radiation. Despite this, countermeasures can be taken to ensure that there is always a correct reading of the flames presence or absence, these include:

  • The UV sensors view of the first third of the flame must be unobstructed.
  • The sensor should not sight the ignition spark.
  • The UV sensor cannot be subjected to excessively high temperatures.

Infrared Sensors

Infrared sensors can be used with either gas or oil flames, this is due to the characteristics of the flame, more than 90% of the flames radiation is infrared. This results in the infrared flame detectors being able to operate with a very high-intensity flame or a very weak one.

For the flame detector to work though, the sensor must have a good view of the flame, the infrared sensor must be protected from any direct flames, and the flame detector leads must be wired correctly according to standard procedure.


Why Buy Photocells From Power Heating Plants?

At Power Heating Plants, we value how precious time is and the importance of getting you back up and running as quickly as possible. With our knowledge and stock combined, we can get you back up and running with as little downtime possible. Did we mention we also have some of the most competitive prices for photocells and flame detectors on the web?

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-47%
Siemens QRA2 UV Photocell

Siemens QRA2 UV Photocell Siemens QRA2 UV Photocell

Siemens QRA2 UV Cell This Flame Detector is suitable for use with burner control boxes for the monitoring of yellow or blue burning gas and oil flames and for ignition spark...
Siemens QRA2 UV Cell This Flame Detector is suitable for use with burner control boxes for the monitoring of yellow or blue burning gas and oil flames and for ignition spark...
£120.54 £63.99
-8%
Bst Uv Universal Flame Detector - Klc11 - Dual Fuel - Photo Cell

BST KLC11 - Dual Fuel UV Universal Flame Detector BST KLC11 - Dual Fuel UV Universal Flame Detector

UV - flame detector KLC 11 for oil - gas and dual fuel burners for intermittent burner operations The KLC 11 is a compact UV flame detector, which has been...
UV - flame detector KLC 11 for oil - gas and dual fuel burners for intermittent burner operations The KLC 11 is a compact UV flame detector, which has been...
£190.00 £175.00
Satronic Mz770S 50001 Photocell - Photo Cell

Honeywell MZ770S 50001 Photocell Honeywell MZ770S 50001 Photocell

Satronic Photo Cell Alternative Part Number: C31039X
Satronic Photo Cell Alternative Part Number: C31039X
£10.88
-74%
Siemens Qrb1 Photo Cell - Photo Cell

Siemens QRB1B Photocell - RED Siemens QRB1B Photocell - RED

QRB1 UV Detector QRB1B A050B70A2 Photocell
QRB1 UV Detector QRB1B A050B70A2 Photocell
£30.00 £7.95
Honeywell UVZ780 (Blue) - 18812U UV Cell

Honeywell UVZ780 (Blue) - 18812U UV Cell Honeywell UVZ780 (Blue) - 18812U UV Cell

UVZ780 Blue UV Detector  Honeywell UVZ-780 (Blue) Photocell - For use with TMG Control Boxes The Blue Photocells are less sensitive than their 'Red' counterpart. All UVZ 780 cells are marked as...
UVZ780 Blue UV Detector  Honeywell UVZ-780 (Blue) Photocell - For use with TMG Control Boxes The Blue Photocells are less sensitive than their 'Red' counterpart. All UVZ 780 cells are marked as...
£96.29
Honeywell UVZ780 (Red) - 18813U UV Cell

Honeywell UVZ780 (Red) - 18813U UV Cell Honeywell UVZ780 (Red) - 18813U UV Cell

UVZ780 Red UV Detector - 18813U Honeywell UVZ-780 (Red) UV Cell - For use with TMG Control Boxes The Red Photocells are more sensitive than their 'Blue' counterpart. All UVZ 780 cells are marked...
UVZ780 Red UV Detector - 18813U Honeywell UVZ-780 (Red) UV Cell - For use with TMG Control Boxes The Red Photocells are more sensitive than their 'Blue' counterpart. All UVZ 780 cells are marked...
£94.25
-11%
Bst Uv Compact Universal Flame Detector - Ifc 50 - Photo Cell

BST IFC50 UV Compact Universal Flame Detector BST IFC50 UV Compact Universal Flame Detector

UV Compact Universal Flame Detector IFC 50 The IFC 50 is a compact UV flame detector, which is specially designed for severe condi-tions often experienced in industrial applications for single...
UV Compact Universal Flame Detector IFC 50 The IFC 50 is a compact UV flame detector, which is specially designed for severe condi-tions often experienced in industrial applications for single...
£450.00 £399.00

BST KLC20 - Gas or Oil Universal Flame Detector BST KLC20 - Gas or Oil Universal Flame Detector

KLC20 Flame Detector - BST Solutions The wide band flame detector KLC 20 is a compact flame detector, which is special designed for blue burning combustion systems. The patented evaluation...
KLC20 Flame Detector - BST Solutions The wide band flame detector KLC 20 is a compact flame detector, which is special designed for blue burning combustion systems. The patented evaluation...
£104.00
Fireye UV5 Flame Scanner - UV Non Self Check

Fireye UV5 Flame Scanner - UV Non Self Check Fireye UV5 Flame Scanner - UV Non Self Check

Fireye UV5 Flame Scanner  UV5 Overview Designed specifically to be used with the BurnerPRO range of control boxes the UV5 Flame scanner is ideally suited for gaseous fuels (natural gas &...
Fireye UV5 Flame Scanner  UV5 Overview Designed specifically to be used with the BurnerPRO range of control boxes the UV5 Flame scanner is ideally suited for gaseous fuels (natural gas &...
£74.99
Siemens AGG02 Standard Lens Kit For QRA 10.C

Siemens AGG02 Standard Lens Kit For QRA 10.C Siemens AGG02 Standard Lens Kit For QRA 10.C

Siemens AGG 02 Standard Lens Kit For QRA10.C and AGG16.C Specifications: Manufacturer: Siemens Complete with: Spring washer and O-Ring included.
Siemens AGG 02 Standard Lens Kit For QRA10.C and AGG16.C Specifications: Manufacturer: Siemens Complete with: Spring washer and O-Ring included.
£29.99
Siemens AGG16.C Adaptor For Mounting QRA53

Siemens AGG16.C Adaptor For Mounting QRA53 Siemens AGG16.C Adaptor For Mounting QRA53

Siemens AGG16.C Adaptor Specifications: Manufacturer: Siemens The AGG16.C is an adapter suitable for use with Siemens QRA53/55/73/75 Models.
Siemens AGG16.C Adaptor Specifications: Manufacturer: Siemens The AGG16.C is an adapter suitable for use with Siemens QRA53/55/73/75 Models.
£149.31
Siemens Qrb1A-A150B70A Photo Cell - Photo Cell

Siemens QRB1A-A150B70A Photocell Siemens QRB1A-A150B70A Photocell

Siemens Photo Cell Alternative Part Number: C31014N The QRB photocells supervise yellow-burning oil flames. Technical Data: Degree of protection: IP40 Weight: 35 g Mounting Position: Any
Siemens Photo Cell Alternative Part Number: C31014N The QRB photocells supervise yellow-burning oil flames. Technical Data: Degree of protection: IP40 Weight: 35 g Mounting Position: Any
£7.95

BST Relay Module Flame Detector - Various Voltages BST Relay Module Flame Detector - Various Voltages

The Relay Module Flame Detector makes a safety-related binary signal ON/OFF from a flame detector in the form of potential free relay contacts aviable for a burner control box. The...
The Relay Module Flame Detector makes a safety-related binary signal ON/OFF from a flame detector in the form of potential free relay contacts aviable for a burner control box. The...
£95.00
-11%
Bst Uv Compact Universal Flame Detector - Ifr 50 - Photo Cell

BST IFR50 UV Compact Universal Flame Detector BST IFR50 UV Compact Universal Flame Detector

UV Compact Universal Flame Detector IFR 50 The IFR 50 is a compact UV flame detector, which is specially designed for severe conditions often experienced in industrial applications for single...
UV Compact Universal Flame Detector IFR 50 The IFR 50 is a compact UV flame detector, which is specially designed for severe conditions often experienced in industrial applications for single...
£478.00 £425.00
Siemens RAR9 Photocell

Siemens RAR9 Photocell Siemens RAR9 Photocell

Siemens RAR9 Photocell The RAR flame detectors are designed for use with burner controls, for the supervision of yellow oil flames. This flame detector is desinged for use with LAL,...
Siemens RAR9 Photocell The RAR flame detectors are designed for use with burner controls, for the supervision of yellow oil flames. This flame detector is desinged for use with LAL,...
£101.45
Siemens QRB3 Photocell

Siemens QRB3 Photocell Siemens QRB3 Photocell

Siemens QRB3 Photocell / Flame Detector Overview The Siemens QRB3 photocell is used for the supervison of oil flames in the visible light spectrum. The QRB3 has been designed to...
Siemens QRB3 Photocell / Flame Detector Overview The Siemens QRB3 photocell is used for the supervison of oil flames in the visible light spectrum. The QRB3 has been designed to...
£27.91
Autoflame Mm60004 Uv Sensor - Uv Sensor

Autoflame MM60004 UV Cell Autoflame MM60004 UV Cell

Autoflame MM60004 UV Sensor Alternative Part Number: C31088Z Specifications: Manufacturer: Autoflame Side view non self checking UV Sensor
Autoflame MM60004 UV Sensor Alternative Part Number: C31088Z Specifications: Manufacturer: Autoflame Side view non self checking UV Sensor
£453.07
Siemens AGG03 Quartz Lens Kit For QRA 10.C

Siemens AGG03 Quartz Lens Kit For QRA 10.C Siemens AGG03 Quartz Lens Kit For QRA 10.C

Siemens AGG 03 Quartz Lens Kit For QRA10.C and AGG16.C Specifications: Manufacturer: Siemens Complete with: Spring washer and O-Ring included.
Siemens AGG 03 Quartz Lens Kit For QRA10.C and AGG16.C Specifications: Manufacturer: Siemens Complete with: Spring washer and O-Ring included.
£76.29
Siemens Agm19 2Mtr Plug - Plug

Siemens AGM19 2MTR Plug For QRA53 / QRA55 Siemens AGM19 2MTR Plug For QRA53 / QRA55

Siemens AGM19 2MTR Plug Specifications: Manufacturer: Siemens The AGM19 2MTR is for the Siemens QRA53 and QRA55 Models.
Siemens AGM19 2MTR Plug Specifications: Manufacturer: Siemens The AGM19 2MTR is for the Siemens QRA53 and QRA55 Models.
£60.87
Siemens Qra55.e17 Self Checking Photocell 110V - Photo Cell

Siemens QRA55.E17 110v Self Checking UV Cell Siemens QRA55.E17 110v Self Checking UV Cell

Siemens QRA55 110v UV Cell Specification: The QRA55 flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving. Technical Data:...
Siemens QRA55 110v UV Cell Specification: The QRA55 flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving. Technical Data:...
£529.47
Siemens Qra55.e27 Self Checking Uv Cell 230V - Photo Cell

Siemens QRA55.E27 230v Self Checking UV Cell Siemens QRA55.E27 230v Self Checking UV Cell

Siemens QRA55 230v Photo Cell Specification: The QRA55 flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving. Technical Data:...
Siemens QRA55 230v Photo Cell Specification: The QRA55 flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving. Technical Data:...
£318.55
-51%
Siemens QRA53.E27 230v Self Checking UV Cell

Siemens QRA53.E27 230v Self Checking UV Cell Siemens QRA53.E27 230v Self Checking UV Cell

Siemens QRA53 230v UV Cell Specification: The QRA53 flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving. Technical Data: Average life...
Siemens QRA53 230v UV Cell Specification: The QRA53 flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving. Technical Data: Average life...
£607.20 £298.09
-24%
Siemens QRA53.E17 110V Self Checking UV Cell

Siemens QRA53.E17 110V Self Checking UV Cell Siemens QRA53.E17 110V Self Checking UV Cell

Siemens QRA53 110v UV Cell Alternative Part Number: Specification: The QRA53 flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving....
Siemens QRA53 110v UV Cell Alternative Part Number: Specification: The QRA53 flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving....
£632.50 £483.44
Siemens Qra50M Self Checking Uv Cell - Photo Cell

Siemens QRA50M Self Checking UV Cell Siemens QRA50M Self Checking UV Cell

Siemens QRA50M UV Cell Specification: The DETACTOGYR flame supervision system consists of the UV flame safeguard LFE50... and the flame detector QRA50 Self Checking UV cell. It is designed for UV...
Siemens QRA50M UV Cell Specification: The DETACTOGYR flame supervision system consists of the UV flame safeguard LFE50... and the flame detector QRA50 Self Checking UV cell. It is designed for UV...
£840.83
Siemens Qra10M.c Photocell - Photo Cell

Siemens QRA10M.C UV Cell Siemens QRA10M.C UV Cell

Siemens QRA10M.C UV Cell Specification: This Photocell comes with a lens. The flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving....
Siemens QRA10M.C UV Cell Specification: This Photocell comes with a lens. The flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving....
£232.69
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