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AN34: Instructions for Use of Conductivity Cell Filling and Storage Device PN 50087 and 50087.1

Document Number: 
Publication Date: 
Saturday, October 13, 2012
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This application note provides instructions for use of PN 50087 / 50087.1 syringe and tubing assembly in rinsing, cleaning, and storing conductivity sensors. The tubing assembly consists of a length of 6.35 mm (1/4 inch) I.D. tube connected by a plastic reducing union to a short piece of 11.1 mm (7/16 inch) I.D. tube. Refer to Application Note 2D: Instructions for Care and Cleaning of Conductivity Cells for information on water and solutions recommended for use.

  • SBE 9plus, 19plus V2, 25plus, and 49 are shipped with PN 50087.
  • SBE 16plus V2 and 16plus-IM V2 are shipped with PN 50087.1, which includes the parts in 50087, plus hose barbs to replace the anti-foulant cap on the instrument. The hose barbs allow for connection of the tubing for cleaning and storing, as described below.

Note: This procedure can also be used with the SBE 16, 16plus, 16plus-IM, 19, 19plus, and 25, which are no longer in production.

Procedure for Use

  1. To fill the conductivity cell, draw about 40-60 cc of purified water into the syringe.
  2. Connect the plastic tubing to the TC duct intake on the temperature sensor [Figure 1] (or to the open end of the conductivity cell on systems without the TC duct [Figure 2]), and inject solution into the cell and pump plumbing.
  • CTDs with a TC duct or hose barb fitting — remove the plastic reducing union and connect the smaller diameter tubing directly to the TC duct / fitting.
  • CTDs without a TC duct or hose barb fitting (older instruments) — leave the reducing union and large diameter tubing attached and carefully connect the tubing directly to the end of the glass conductivity cell [Figure 2].
  1. (If applicable) Loop the rubber band around a bar on the CTD cage and back over the top of the syringe to secure the apparatus for storage.



Application Note Revision History

Date Description
1992 Initial release.
January 2005 - Add reference to application note 2D for information on storing solutions.
- Incorporate 50087.1 (kit with hose barbs for 16plus / 16plus-IM.
March 2008 - Add information on V2 SeaCATs (16plus V2, 16plus-IM V2, 19plus V2).
October 2012 - Update to include SBE 25plus.


Applies To