11 safe-drive, 1 system description – K-Patents PR-23 User Manual
Page 151
11 Safe-Drive™
143
11 Safe-Drive™
The K-Patents Safe-Drive™ system is used for safe insertion and removal of a refrac-
tometer sensor while the process line is under full process flow and pressure. The
Safe-Drive™ system is typically used in a continuous process with infrequent shut-
downs and large pipe size, diameter 50 mm (2") or above, e.g. in wood pulp industry.
11.1 System description
The Safe-Drive™ system consists of a Safe-Drive™ isolation valve welded to the process
pipe, a PR-23-SD refractometer sensor and a Safe-Drive™ retractor used for sensor
insertion and removal. The two-part Retractor can be kept separately in clean storage
and all installed PR-23-SD sensors can be inserted and removed with one and same
tool.
Figure 11.1
The Safe-Drive™ system:
Isolation valve, PR-23-SD sensor, Retractor