Safe sensor insertion and removal for Safe‑Drive generation 2.1 - PR-23 - PR-23-AC - PR-23-AP - PR-23-GC - PR-23-GP - PR-23-M - PR-23-RP - PR-23-SD - PR-23-W

PR-23 Series User Guide
Document code
IM-EN-PR23
Revision
H
Language
English
Product
PR-23
PR-23-AC
PR-23-AP
PR-23-GC
PR-23-GP
PR-23-M
PR-23-RP
PR-23-SD
PR-23-W
Document type
User guide
These instructions are for Safe‑Drive generation 2.1. If you have Safe‑Drive generation 1 or generation 2, consider upgrading to generation 2.1. Upgrade from generation 1 requires shutdown, upgrade from generation 2 can be done at any time. See https://www.vaisala.com/en/safe-drive-refractometer-pr-23-sd-manuals-safety-instructions-and-safety-videos for more information on how to upgrade.
WARNING Always use the Safe‑Drive retractor for sensor insertion and removal! Safe sensor insertion and removal can only be guaranteed when the retractor tool is used and these instructions are carefully followed. Removing the sensor without the retractor tool may cause a life-threatening situation if there is any pressure in the pipe. Also, the lip seal damages easily if the retractor is not used.
WARNING Safe‑Drive is designed to protect user from process liquid and to safely insert and remove the sensor. However, do not underestimate or neglect the factory safety requirements:
  • Wear long-sleeved safety clothing since the process liquid can be either hot, corrosive or both
  • Use protective gloves
  • Use safety glasses and/or goggles
  • Use ear protectors
  • Use a hard hat or helmet
  • Use face visor
  • Wear hard-cap safety boots
  • Before you start, locate the nearest emergency shower and eye wash
  • Never operate the system alone: It is recommended for one operator to read the instructions and guide the second operator performing the step
WARNING The drain valves, see Figure 1 and Figure 1, should always be closed unless otherwise indicated. If the valves are left open, process liquid will leak out through them.
Figure 1. Recommended work zone by side of SD