14
sanding, a chemical soak may be necessary (direction below). Always sand
the electrodes after performing a chemical soak.
1. Remove membrane cap and rinse the probe with clean water (tap,
distilled, or deionized).
2. Turn unit off, or disconnect probe.
3. Obtain either:
• 14% lab strength ammonium hydroxide and soak for 2-3
minutes
• 3% household cleaning strength ammonia and soak overnight
(8-12 hours)
4. Rinse ammonium hydroxide/ammonia from probe.
5. Use sandpaper (400 grit wet/dry, supplied with YSI membrane kit
605306) to buff (wet sand) excess deposits from probe.
6. Install a new membrane cap.
Never use chemicals or abrasives not recommended by YSI.
Temperature Sensor
You must keep the temperature portion of the sensor free of build up.
Other than that, the sensor requires no maintenance. A soft bristle brush,
like a tooth brush can be used to scrub the temperature sensor if needed.
A C C E S S O R I E S / P A R T N U M B E R S
Part Number
Description
606037
1 meter DO and Temp probe and cable assembly
605352
4 meter DO and Temp probe and cable assembly
605353
10 meter DO and Temp probe and cable assembly
609200
Self-stirring BOD lab probe and cable
assembly with power supply
605139
DO carrying case, soft sided
606036
DO carrying case, hard sided
605306
Membrane kit, 1.25 mil PE, six cap
membranes and KCl solution
All cables include a polarographic dissolved oxygen sensor and
temperature sensor.
606035REF-B-YSI-DO200A-DO200M-User-Manual-English.indd 14
12/7/2017 9:45:12 AM
