Dear all,
I was out of this site for long due to some constrain so cannot share my views.Apologise for that.But its good to see many new members in this forum.
I would like to know how multigas detector works?
How does the sensor senses the gas?
what is there in those sensors?
How it is calibrated?
i mean all basic about working of gas detectors.
Looking forward for your replies...
Regards,
Hansa Vyas
From India, Udaipur
198I was out of this site for long due to some constrain so cannot share my views.Apologise for that.But its good to see many new members in this forum.
I would like to know how multigas detector works?
How does the sensor senses the gas?
what is there in those sensors?
How it is calibrated?
i mean all basic about working of gas detectors.
Looking forward for your replies...
Regards,
Hansa Vyas
From India, Udaipur
Dear Hansa
Let me try to answer your query...
1. I would like to know how multigas detector works?
In multi gas detectors, different sensors are present in built which suited for different gases... As detectors measure a gas concentration, the sensor responds to a calibration gas, which serves as the reference point or scale... As a sensor’s detection exceeds a preset alarm level, the alarm or signal will be activated...
2&3. How does the sensor senses the gas? what is there in those sensors?
Based on different mechanisms like semiconductors, oxidation, catalytic, infrared, etc. The standard cells present in the sensor is matching to the input air which goes in it and if against the calibarated value, its raising alarm...You may get further details from the attachments...
4. How it is calibrated?
We have to refer the operational manual of individual detecotors for knowing the caliberation procedure...
I hope this may be helpful to you... Do let me know your comments...
From India
Let me try to answer your query...
1. I would like to know how multigas detector works?
In multi gas detectors, different sensors are present in built which suited for different gases... As detectors measure a gas concentration, the sensor responds to a calibration gas, which serves as the reference point or scale... As a sensor’s detection exceeds a preset alarm level, the alarm or signal will be activated...
2&3. How does the sensor senses the gas? what is there in those sensors?
Based on different mechanisms like semiconductors, oxidation, catalytic, infrared, etc. The standard cells present in the sensor is matching to the input air which goes in it and if against the calibarated value, its raising alarm...You may get further details from the attachments...
4. How it is calibrated?
We have to refer the operational manual of individual detecotors for knowing the caliberation procedure...
I hope this may be helpful to you... Do let me know your comments...
From India
Dear Dipil,
thanks for valuable information.
This is actually operating manual.Any waysin the attachment above there is a table
product specification. For O2 Range is written as 0-21%, now suppose O2 is above 21% than what will happen.will it measure it or not.?
Regards,
Hansa
From India, Udaipur
thanks for valuable information.
This is actually operating manual.Any waysin the attachment above there is a table
product specification. For O2 Range is written as 0-21%, now suppose O2 is above 21% than what will happen.will it measure it or not.?
Regards,
Hansa
From India, Udaipur
Dear dipil,
Thanks for your answers. . .
Dear Hansa,
Its suppose O2 range increased gas detectors show the value mean time raise the alarm/sound i have used MSA type gas detectors in my site. . .
Please let me know. . .
From United States, Fpo
Thanks for your answers. . .
Dear Hansa,
Its suppose O2 range increased gas detectors show the value mean time raise the alarm/sound i have used MSA type gas detectors in my site. . .
Please let me know. . .
From United States, Fpo
Dear Hansa
First of all sorry for being late... I missed out to reply to this thread...
Raghu has already answred to your query... The set point for alarm is putting according to our requirement by the manufactorer... If it's 21% high alarm level for Oxygen and in case the atmosphere is having more than 21% it will give alarm and will stop only when the atmosphere reach back to normal condition, ie. 21 or below 21.
Now you may go through the attached another manual of Multi gas Detector of honeywell... You will get a lot info regarding the gas detectors from it...
@Raghu: Thanks for your inputs into the thread.
Keep on sharing and keep up the pace...
From India
First of all sorry for being late... I missed out to reply to this thread...
Raghu has already answred to your query... The set point for alarm is putting according to our requirement by the manufactorer... If it's 21% high alarm level for Oxygen and in case the atmosphere is having more than 21% it will give alarm and will stop only when the atmosphere reach back to normal condition, ie. 21 or below 21.
Now you may go through the attached another manual of Multi gas Detector of honeywell... You will get a lot info regarding the gas detectors from it...
@Raghu: Thanks for your inputs into the thread.
Keep on sharing and keep up the pace...
From India
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