Name Pramod Reddy

1.	Question text:
Amonia Sensor

2.	Design summary:
	Fairly well written.
	Your worst case design is ok.
	Could have added a calibration step / method to calibrate at known gas conc.
	What happens if there is a problem with the sensor? The clean air level
	should fall below 2mV and that should trigger a different warning/alarm also.

3.	Block diagram
	
4.	Power supply design

5.	Industrial Design:

6.	KICAD Design
	Schematic:
	Circuit design is ok overall. Could have added more functionality
	
	PCB:
	Layout is too loose.
	Transformer need not be board mounted - too much weight.
	If all your components are SMD layout could be tighter.
	
7.	Pricing / BOM / Assembly
	Final prixing?