Are first and second generation LDO sensors interchangeable?

FAQ - Hach LDO™

1. Q: Are first and second generation LDO sensors interchangeable?A: Not completely. The second generation cap works on a first generation body, but requires LDO firmware 2.0 or later. Second generation caps will not work on first generation sensors. Instructions for updating firmware are available in the Hydras 3LT Software manual.
   
   
2. What is the difference between the first and second generation Hach LDO sensor for Hydrolab sondes?
3. What is the recommended calibration procedure for Hach LDO?
4. What is Hach LDO and how does it work?
5. Is a circulator required with the Hach LDO sensor?
6. Will fouling affect the DO readings from a Hach LDO sensor?
7. How long will the sensor cap last?
8. What is the warranty on the Hach LDO sensor?