20
8.
Probe Cleaning and Maintenance
The flow channel of the ST-735 should be cleaned once a month using a soft brush. Deposit and debris
should be removed. The probe can be cleaned with our hand held clean solution (
https://pyxis-
lab.com/product/st-500-probe-cleaning-kit/
). Do not use organic solvents or strong acid base to clean
the probe. If the probe output signal is not stable and fluctuates significantly, check and make sure the
solution ground is properly connected to the brass pipe. Avoid long term storage at temperature over
100 °F. In an outbox installation, properly shield the probe from direct sunlight and precipitation.
8.1.
ST-735 Inline Probe Cleaning Solution
Soak the lower half of the ST-735 probe in 100 ml inline probe cleaning solution for 30 minutes. Rinse
the ST-735 probe with distilled water. If the surface is not entirely clean, continue to soak the ST-735
probe for an additional 30 minutes. Pyxis Lab Inline Probe Cleaning Solution can be purchased at our
online Estore/Catalog
https://pyxis-lab.com/product-catergory/accessories/page/2/
9.
Storage
Avoid long term storage at temperature over 100 °F. In an outdoor installation, properly shield the ST-
735 probe from direct sunlight and precipitation.