Model ER 7220 – Electrical Resistance Probe for the 2 inch Access System with Large Flush Element
Model ER7220 Flush-Mount Electrical Resistance Probe is an adjustable-length probe for use with the 2″ access system in high pressure and high temperature applications. These probes are ideally suited for applications where the probe element needs to be flush with the wall of the pipe.
The probe assembly consists of an insertion rod with an element, a hermetically sealed connector, and a hollow plug nut, which are all welded in place. The hollow plug nut on the probe screws into the hollow plug of the access system. This allows the probe to be installed in the process, using a retriever tool and service valve, without process shutdown.
Insertion lengths range from 1.687″ up to 36″ in 1/16″ increments. Several standard elements are available to meet your specific needs. Probe adaptors are available and must be ordered separately. (Refer to the Element and Alloy Selection Chart for more information).