How to adjust/control flow through a TU5300/TU5400 turbidimeter.

Document ID

Document ID TE12743

Published Date

Published Date 03/31/2021
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Question
How to adjust/control flow through a TU5300/TU5400 turbidimeter.
Summary
Adjust flow through a TU5300 & TU5400. 
Answer
See the below  attachment for a TU5300/TU5400 flow control instruction sheet.
 
The below video shows an easy way to visually ensure a proper flow is going through the turbidimeter.  The below procedure/tightening of the back pressure valve was followed in the video until any visible bubbles were no longer seen swirling through the vial.
After a good calibration on the turbidimeter, remove the process head with the flow connections still attached.  Place a flashlight below the process vial as shown in this video.  The bubbles will be instantly visible.  Increase the flow to be within flow specification and then slowly tighten the back pressure valve. 

See the following articles for more information on TU5X00

What can cause high or erratic readings on a TU5300/TU5400?
What are the causes of a decrease in flow for a TU5300sc or TU5400sc turbidimeters?
What method does the TU5300 / TU5400 flow sensor use for flow measurement?
How can the flow sensor for the TU5300 or TU5400 turbidimeter be cleaned?
TU5 Series Turbidimeters - Troubleshooting
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