Need schematics of LPG Gas detector

[guratasta]

Hai all.. I need to repair the LPG Gas Detector. This is explosion proof device. Who have the schematics this device..? Help me please..!!!!. Thanks for all...

 

[davenn]

have you gone to the manufacturer either directly or via the seller of the product ?
that would be the best starting place as we cant tell from your photo any info on the make, model etc of the detector

Dave

 

[guratasta]

I have gone to the manufacturer web site www.e-woo.com. There are not any information of the divice circuits. but they have the manual only. this device from DAESUNG MECHATRON CO. LTD . Gas Leak Detector MODEL : EW402.

Thank's Dave for your reply....

 

[ayush]

Its unlikely for you to find a schematic for this on the web. It would be easier for us to help if you could post some good quality pics of the circuit board inside.

 

[(*steve*)]

Or perhaps you could explain exactly what you want to do.

The inner working of a sensor is often like the inner working of an integrated circuit -- it has a function you can use, but not change.

 

[guratasta]

Need the Gas Leak Detector Circuit

Ok.... I need the circuits of " Gas Leak Detector " for LPG with leds and 7 segment display for the leakage consentration. Who has the idea for this circuits ..? Help me please. I attach the original device picture from daesung product. This device have fault, and I have tired to repair this . On the circuits board have a PIC 16F72 microcontroller. Thank's for all...

 

[ayush]

Can u describe the fault u r experiencing?

does the display show up when u power on?
if no, then we'll have to check components from powersupply suply rails to the microcontroller.

or, is it just that ur not getting correct readings?
In that case we should only check the sensor, its calibration (coils and trim-pots) and its interface to the microcontroller.