Agro
Contributor
Until now I used the 4 sensors for about 18 month, checked them at 6, 12, 13, 14, 15, 16, 17 month up to 3.5 bar. No problems so far.
Now I was told this is dangerous because all the 4 sensors come out of one serie. It is better to change 2 sensors after 9 month and the other 2 sensors after 9 more month. So I have different series of sensors. In case of faulty serie I always have 2 good sensors.
I am not sure if this makes sense:
- are there bad series?
- will I detect a bad serie by overpressure testing to 3.5 bar?
- I have 2 young sensors, 2 older sensors, they behave differently. The unit believes the young sensors are wrong and kicks them out. Until now it is OK. Now let's assume one of the older is dammaged, now I have a serious problem. In case of 4 equal sensors I have no problem, if one is dammaged.
I know about an accident on a AP Inspiration. The diver changed one ot the 3 sensors every 6 month, so the age was:
No 1: 6 month
No 2: 12 month
No 3: 18 month
No 3 died during the dive because of its age, it gave wrong measurement.
No 2 was dammaged for any reason. Unfortunately it behaved exactly as No 3.
The unit kicked out No 1, the only working sensor. The diver died.
Not exactly the same situation as on a Liberty, it has 4 sensors. But the problem is similar.
How do you change sensors on a Liberty?
How do you change sensors on any other unit?
Now I was told this is dangerous because all the 4 sensors come out of one serie. It is better to change 2 sensors after 9 month and the other 2 sensors after 9 more month. So I have different series of sensors. In case of faulty serie I always have 2 good sensors.
I am not sure if this makes sense:
- are there bad series?
- will I detect a bad serie by overpressure testing to 3.5 bar?
- I have 2 young sensors, 2 older sensors, they behave differently. The unit believes the young sensors are wrong and kicks them out. Until now it is OK. Now let's assume one of the older is dammaged, now I have a serious problem. In case of 4 equal sensors I have no problem, if one is dammaged.
I know about an accident on a AP Inspiration. The diver changed one ot the 3 sensors every 6 month, so the age was:
No 1: 6 month
No 2: 12 month
No 3: 18 month
No 3 died during the dive because of its age, it gave wrong measurement.
No 2 was dammaged for any reason. Unfortunately it behaved exactly as No 3.
The unit kicked out No 1, the only working sensor. The diver died.
Not exactly the same situation as on a Liberty, it has 4 sensors. But the problem is similar.
How do you change sensors on a Liberty?
How do you change sensors on any other unit?