Hach-Lange SIGMA SD900 Refrigerated Sampler and All Weather Refrigerated Sampler User Manual - Manual (Page 38)

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Installation
2. Press the tubing into the strain relief ( Figure 18 or Figure 19 ).
3. Route the tubing so that the tubing is not pinched when the
cover is closed.
4. Connect the other end of the tubing to the strainer.
Note: Use Cat. No. 2186 (connection kit) if using Teflon-lined tubing.
5. Place the intake tube and strainer in the main stream of the
sample source where the water is turbulent and well-mixed.
Make sure that the intake tube does not have kinks or loops.
Figure 18 Refrigerated sampler intake tubing installation
1 Strainer 3 Liquid sensor
2 Intake tubing 4 Strain relief