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Topic: Hey Focalist! You want Gas detectors? (Read 986 times) previous topic - next topic

GoForSmoke

I PM'd you a link but I guess you don't bother with PM's.

http://www.futurlec.com/Gas_Sensors.shtml

the bottom one, complete unit runs $9.90 for 1, $7.90 for 100+

my highlights, if you don't see the right type then check the page above.

Quote
Gas Leak Alarm Module

Complete Gas Leak Alarm Module for use in Home or Factory to warn of leaking LPG, Natural Gas or Coal Gas. This unit provides output LED and buzzer driver for visual and audio indication when the gas concentrations reaches a dangerous level. The unit can also drive a valve in the gas supply, to switch off the gas if a leak is detected.

The unit requires a 9V DC Supply and is very compact for easy mounting in portable or fixed equipment. Calibration is quite easy and trip point will remain set for the life of the module. This ready to use Gas Leak Module can easily be incorporated into a large unit to provide a full Gas Leak Alarm.

Part Code: GAS_ALARM_MODULE

   
Pricing
Features

    Ready-to-Run No Additional Circuitry Required
    Ideal for use in Alarm Units for Home or Factory
    Detects LPG, Natural Gas and Coal Gas
    Output Available for LED's or Buzzers
    Detection Range: 1 - 25% (Leak Gas Level)
    Accuracy: ±5%
    Dimensions: 22.3mm Length, 25.4mm Width, 15.2mm Height



Cripes dude, I thought this just -might- be what you were looking for.
Nick Gammon on multitasking Arduinos:
1) http://gammon.com.au/blink
2) http://gammon.com.au/serial
3) http://gammon.com.au/interrupts

focalist

#1
Mar 28, 2013, 08:21 pm Last Edit: Mar 28, 2013, 08:23 pm by focalist Reason: 1
Sorry about not replying on the PM, been a bit under the weather again.

Yep, those are the sensors I am using, though I am using multiple types (MQ2 and MQ6 together and have MQ135 on order).  Just got another batch of both in the mail today, ordered them a while back from a vendor in China.

Yep, that's the basic idea-  the technology is pretty simple.. it's getting this thing made and implemented and certified that is the real issue. A commercially produced and certified valve that would be installed on the mains- which you and I are very much not allowed to do.  In many places it's illegal to mess with the gas, in all places it's foolish!

Development of the hardware really isn't a big deal, nor is the code.  It's putting the thing together and getting it in front of the right people to make it happen that is the big battle :)
When the testing is complete there will be... cake.

GoForSmoke

Oh. Sorry man, I thought you were still looking for sensors.
I didn't know you had to deal with politicians. If Obama says yes it will never get passed.

Nick Gammon on multitasking Arduinos:
1) http://gammon.com.au/blink
2) http://gammon.com.au/serial
3) http://gammon.com.au/interrupts

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