WETTING A NEW, DRY PENCIL TENSIOMETER
When you receive your Pencil Tensiometer (PT) the ceramic tip will be dry. Prior to use, the Ceramic Tip must be properly wetted to prevent trapping air bubbles in its pores. To prepare the
Ceramic Tip for use follow the steps below:
• Open the Bottle containing previously prepared Air-Free Water.
• Slowly place the PT in the Air Free Water Bottle. The water level must be high enough to
completely submerge the Ceramic Tip.
• NOTE: Do not stir or disturb the water, otherwise air will dissolve into the water.
• Make sure that both the Vent Port and the Filling Port of the PT are open. Remove the
Clamping Rings from the Port Tubes if necessary.
• Leave the PT sit in the Bottle until the water level rises in the TP cavity (see figure below)
• Now the ceramic tip will be properly wetted for use and only a minimal amount of air
bubbles may be trapped in the ceramic pores.
NOTE: After the PT is ready for use, we recommend you maintain a vacuum charge on the Airfree Water Bottle for future use.
NOTE: Never expose a dry ceramic part to water from inside and outside at the same time. This
will trap a considerable amount of air in the ceramic pores and reduce the PT’s accuracy. Always use Air-Free Water for wetting the Ceramic Tip
