YSI 5200 - Manual (Page 32)

YSI Incorporated 30 5200 Recirculating System Monitor
CAUTION: Do not cross thread the sensor nut. Tighten the nut until it is flush with the face of
the probe module bulkhead. Do not over tighten.
Figure 4-7 Bulkhead Seating
7. Repeat steps 3-6 for any other sensors.
8. Replace the probe sensor guard.
Dissolved Oxygen Sensor Installation
The YSI 5562 comes with the DO sensor already installed. Refer to Section 11.4.2 DO Sensor
Replacement for instructions on installing the YSI 558 Replaceable DO Module Kit.
4.6 Membrane Cap Installation
NOTE: The DO sensor was shipped dry. A shipping membrane cap was installed to protect the electrode.
A new membrane cap must be installed before the first use.
1. Unscrew and remove the probe sensor guard.
2. Unscrew, remove, and discard the old membrane cap.
3. Thoroughly rinse the sensor tip with distilled water.
4. Install a gasket from the 5204 Teflon or 5909 PE Membrane Kit onto the DO sensor.
Figure 4-8 Gasket Installation
5. Seat the gasket all the way down against the probe body. A small pair of tweezers may aid in the
installation.
6. Prepare the electrolyte according to the directions on the electrolyte solution bottle.
7. Hold the new membrane cap and fill it at least 1/2 full with the electrolyte solution.
Gasket
DO Sensor
Membrane Cap
Probe Body
Gasket Installed