Flame Detection/ ionization sensor

[mioja]

Hi,
I need a sensor that can sense flame(not temperature).There is some good hamamtsu products for that application.There is some restrictions i am facing.The sensor can handle quite high tempratures.There is kind of sensor called as ionization sensor(I am not sure about the name)
that product produces some kind of electrical signal with the trigger of flame(I guess).
Are there anybody who have knowledge about flame detection and ionization sensors?

 

[FvM]

You are takling about quite different sensor principles. Hamatsu flame detectors are UV optical sensors for remote flame detection, ionization sensors are simple electrodes placed in the flame zone, biased with a DC voltage. The presence of a flame is detected by a small DC current (nA to µA range).

The latter method is often used in gas burners, the ignition electrodes can be used for ionization measurement through the secondary winding of the ignition transformer.

For a brief review of flame detection methods https://en.wikipedia.org/wiki/Flame_detector

What's your application problem?

 

[mioja]

Firstly, I am working on a device which is called as open cup flash point which detects flash point of liquids.
So far, I used a cheap flame detection sensor which is something like that and it worked in a way.
https://dx.com/p/arduino-flame-detection-sensor-module-135038
The problem is about that kind of sensor is they are quite sensitive to daylight and they are not usable in high temperature conditions.(90 C)
Then i bought a rod something like that
**broken link removed**
But that device has no cable to measure any current or voltage.There is only a metallic head on it.
I asked to seller about its usage but I did not get a meaningful answer.

 

[FvM]

But that device has no cable to measure any current or voltage.There is only a metallic head on it.
I asked to seller about its usage but I did not get a meaningful answer.

The sensor eletronic is mostly part of the gas burner controller, but separate detector devices are also available.

 

[mioja]

I think I should use a sensor which can work alone.There is some kind of smoke detectors and they have kind of internal ionization detector.I need a sensor which works like in the pictures.In the second picture there is two grey rings and they are called as ionization rings.I need that kind of sensor.

 

[FvM]

Is this a photo from a commercial flash point apparatus? It surely don't need a radiation source for the ionization measurement.

 

[mioja]

Is this a photo from a commercial flash point apparatus? It surely don't need a radiation source for the ionization measurement.

Yes, It is( talking about at the right picture and the product is Tanaka Open Cup Flash Point).I did not understand by saying don't need a radiation source.It ionizeses with the spark of flash point(At least that is my guess)

 

[FvM]

Do you agree that a flame detector doesn't need a radioactive source? I made the comment because you confusingly referred to smoke detectors with alpha source.