Installation guidelines

For the best performance of the TD family of sensors, please adhere to the guidelines on this page.

There are four basic variants for the TD family as shown in the table below.

	Description	Process connectors
TD22xx	Ø6 mm stick probe, 50…350 mm insertion length	Required. Use E30144 compression fitting and one of the process connectors below.
TD25xx	Ø6 mm probe, 30…150 mm insertion length, G ½” sanitary sealing cone	Required. Use E43911 PEEK sealing ring and either a clamp fitting or welding fitting.
TD28xx	Ø6 mm probe, 30…150 mm insertion length, integrated 1.5” triclamp	N/A - 1.5” triclamp connection is integrated.
TD29xx	Ø6 mm probe, 30…150 mm insertion length, integrated 2” triclamp	N/A - 2” triclamp connection is integrated.

Sensor orientation

For best cleanability, do not install the sensor at the lowest point of the pipe or tank as shown by position 5 in the image. This allows the medium to run off the probe and avoid building up over time.

Leakage ports, or weep holes, in process fittings, are required for installations in accordance with 3A guidelines. When an o-ring is place, the process medium remains in the tank or pipe. If that o-ring is compromised, i.e. missing or damaged, the medium will leak at the weep hole. This is an indication that the o-ring must be replaced.

Be sure to install the fitting such that the weep hole points downward.