YSI 9600 - Manual (Page 42)

CHOICE 1:
Start the deployment but LEAVE THE SECOND STANDARD BAG IN PLACE UNTIL YOU ARE
ACTUALLY AT THE FIELD SITE AND THEN REPLACE IT WITH THE INLET FILTER. This
procedure effectively eliminates any chance that air will be sucked into the system no matter what the
timing of your deployment. YSI GENERALLY RECOMMENDS THAT YOU FOLLOW THIS
PROCEDURE FOR MOST DEPLOYMENTS. NOTE, HOWEVER, THAT IF YOU CHOOSE THIS
OPTION, YOU NEED TO BE SURE TO DO THE FOLLOWING:
• Tape the second standard bag to the top of the carousel as shown in the picture below so that
it does not move in transit and disconnect from the analyzer inlet port.
Tape
• Remember to take the inlet filter assembly (filter and guard) with you when you proceed to
the deployment site
CHOICE 2:
Replace the second standard bag with the inlet filter in the laboratory before the deployment begins. Then
either start the deployment in the field via interface to a laptop PC at the site or start the deployment far
enough into the future that you will be assured of having the instrument submersed at the site before a
sample routine is run. The latter procedure will work in most cases, but there is always the chance that
your trip to the deployment site will be delayed and a sample will be run before the inlet filter is submersed
and air will be introduced into the system.
NOTE: You should run at least one Predeployment Test after attaching your 9600 to a PC in the
laboratory and prior to starting a deployment. If you choose to exit NUview and then start the study
in the field using a PC you should follow the instructions in Section 4.3 above to BYPASS the
Predeployment Check.
4.5 INSTALLING THE INLET FILTER
To install the inlet filter to the inlet port, refer to the pictures and step-by-step instructions below:
YSI Environmental 42 Model 9600 Nitrate Monitor