Issue with some NERD 2 Depth Sensors
What is the issue?
When miniaturizing the NERD 2 product, we changed to a smaller pressure sensor module. Unfortunately, some units are exhibiting shifts of up to 50 mbar under certain environmental conditions.
While the units are able to meet relative depth accuracy requirements as per EN 13319, Shearwater feels that absolute accuracy is important for PPO2 reporting and decompression calculations.
What is Shearwater doing about this?
Shearwater is redesigning the NERD 2 to use the pressure sensor with which we have more than 10 years of successful experience. Production and new sales will be suspended until improved parts are available. All existing NERD 2 customers are being offered the update to the new parts at no charge.
Can I continue to use my NERD 2?
This problem is variable in nature and some users will not be affected. Determine if your NERD 2 is affected using the information below.
You may continue to use your NERD 2 if you are comfortable with the level of error in the absolute accuracy. However, we still recommend that all users return their NERD 2s to be reworked.
What should I do?
We expect the solution to be ready for the rework to begin in May. We felt it important to raise awareness before the solution was ready. Please contact Shearwater at email@example.com if you have a NERD 2 and we will direct you to the nearest service center for rework.
We apologize for the frustration you are feeling.
Determining If your NERD 2 is affected