The Membrane Difference of DOG-209F and DOG-209FA Dissolved Oxygen Sensor

The Membrane Difference of DOG-209F and DOG-209FA Dissolved Oxygen Sensor

1. DOG-209F and DOG-209FA ,the both is all polarography
2. Main difference of the both is the membrane, DOG-209F is with common DO membrane, DOG-209FA is with steel mesh DO membrane.
3.Compere with DOG-209F, DOG-209FA is more suitable for harsh environment ,like dirty water with many particles . 
4.So DOG-209FA will have better performance and long working life in harsh environment than DOG-209F.