Preparing The Sonde For Use - YSI 6 series User Manual

Sondes

2.3 PREPARING THE SONDE FOR USE

To prepare the sonde for calibration and operation, you need to install probes (sensors) into the connectors
on the sonde bulkhead. In addition to probe installation, you need to install a new membrane on the YSI
6562 DO Probe if you are using this item. It is recommended that you install the DO membrane before
installing the probe onto the bulkhead. For membrane changes in the future, you may be able to perform
this operation without removing the DO probe. This will largely depend on whether the other installed
probes interfere with your ability to install a membrane. The next step is providing power for the sondes,
through batteries or line power, and then connecting a field cable. The four steps necessary for getting your
sonde ready for use are listed below.
Step 1 Installing the Dissolved Oxygen Membrane – Section 2.3.1
Step 2 Installing the Probes – Section 2.3.2
Step 3 Supplying Power – Section 2.3.3
Step 4 Connecting a Field Cable – Section 2.3.4
2.3.1 STEP 1 - INSTALLING THE DISSOLVED OXYGEN MEMBRANE
Note: If you are using a ROX Optical DO sensor for your applications, please skip to Section 2.3.2 at
this time.
The 6562 Rapid Pulse Polarographic DO probe is shipped with a protective dry membrane on the sensor tip
held in place by an O-ring. Remove the O-ring and membrane. Handle the probe with care. It is very
important not to scratch or contaminate the sensor tip. See Section 2.10.2, Probe Care and Maintenance,
for information on how often the membrane should be replaced.
Unpack the YSI 6562 DO Probe Kit and follow the instructions below
Open the membrane kit and prepare the electrolyte solution. Dissolve the KCl in the dropper bottle by
filling it to the neck with deionized or distilled water and shaking until the solids are fully dissolved. After
the KCl is dissolved, wait a few minutes until the solution is free of bubbles.
Figure 5
1.
ADD DI OR DISTILLED
The DO membrane can be installed with the DO probe either free or installed in the sonde. Both methods
are described in detail below. CAUTION: If you install the membrane with the probe not installed in
the sonde, be sure that the protective cap is installed on the probe end away from the sensor face to
ensure that the connector is not contaminated with electrolyte.
YSI Incorporated Environmental Monitoring Systems Operations Manual
WATER
.
Figure 6
2.
DRY MEMBRANE
PROTECTIVE CAP
Section 2
2-5