12
MW605 Dissolved Oxygen & Temperature Portable Meter
6.2. PROBE PREPARATION
DO probes shipped from Milwaukee Instruments are dry. Prepare
the supplied
MA860
probe before connecting it to the meter.
After preparation, connect to the DIN connector by aligning the
pins with the socket and firmly pushing the plug in.
Note: No conditioning period is required when using MA860
DO probe.
Changing the membrane cap
1. For new probes, remove the red and black shipping cap.
2. Open the supplied membrane package and remove one
o-ring and one membrane cap.
3. Prepare the sensor by soaking the bottom 2½ cm (1”) in
MA9072S
electrolyte solution for 5 minutes.
4. Inspect the membrane cap. The membrane is thin and can not
be repaired if damaged.
5. Position the o-ring. Prime the cap with electrolyte solution.
Shake gently, discard and refill with clean solution making
sure to cover the o-ring.
6. Gently tap the side of the cap to remove trapped air bubbles.
Do not tap on the membrane directly as it may damage it.
7. With the sensor facing downward, slowly screw the cap
upward and counter clockwise. Some electrolyte will overflow.
8. Rinse the outer body of the probe and inspect the membrane
for trapped gas bubbles. The cathode area should be free of
bubbles.
Fill
Tap
Screw
back on
Position
the O-ring
