Do not remove the screws that attach the elbow fittings to the sensor.
2.
Soak the sensor upside down (optics end up) in a container of water at approximately
20 °C for a minimum of 30 minutes.
3.
Put the 3/8" ID tubing of the CT-DO cleaning device on the exhaust elbow fitting.
4.
Remove the plunger from the syringe.
5.
Fill the syringe and the attached hose with DI water.
6.
Put approximately 1 liter of DI water into the syringe and tubing.
This flushes the inside of the sensor.
7.
Put the mixed Triton
®
X-100 solution into the syringe.
Figure 2 Triton
®
X-100 solution into the CT-DO
8.
Put the plunger in the syringe and push the solution into the CT-DO chamber.
9.
Push and pull on the plunger quickly to mix the solution.
Bubbles eject from the intake port.
10.
Do steps 6–8 two to three more times.
11.
Remove the syringe plunger.
12.
Hold the syringe up and fill it with the diluted bleach solution.
13.
Put the plunger in the syringe and push the solution into the CT-DO chamber.
14.
Push and pull on the plunger quickly to mix the solution.
15.
Do steps 10–13 two to three more times.
16.
Flush with DI water (refer to step 6) to clean the sensor of bleach and detergent.
4.2 Replace CT-DO anti-fouling devices
D A N G E R
AF24173 Anti-foulant devices contain (bis)tributyltin oxide. Handle the devices only with rubber or
latex gloves. Wear eye protection. Wash hands with soap and water when the replacement is
complete. Read the precautionary information on the product label first. Refer to the section on the
AF24173 anti-fouling device
on page 48 for details. It is a violation of US Federal Law to use this
product in manner that is inconsistent with its labeling.
There are two anti-fouling devices in the CT-Do flow path. One is in the intake and the
other is in the exhaust. They are good for approximately one year. The manufacturer
replaces these when the user returns the sensor for annual maintenance. The user can
get replacement devices from Sea-Bird Electronics company (P/N AF24173).
Sensor maintenance
22
