Aquametrix AM-TBR Turbidimeter User Manual User Manual
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Figure 4 - Recommended Plumbing for the Instrument
The instrument is equipped to be plumbed using 4.75 mm (3/16”) ID, 8 mm (5/16”) OD flexible
tubing. Opaque tubing should be used if the tubing will be exposed to sunlight, to prevent algae
growth.
In figure 4, there are two flow devices shown. The one on the input side is a shutoff clamp used
during cuvette maintenance. The other device is a backpressure valve. Backpressure may be
required to prevent air from coming out of solution, which may be observed as tiny air bubbles.
3.2.1. Drain Vent:
The AM-TBR has been fitted with a drain vent in the “OUT” bulkhead fitting. This fitting allows for
atmospheric equalization, thus helping to alleviate bubble formation in the cuvette. Refer to
Figure 4.
Upon initial flow minor leakage may occur through the drain vent. This will subside once normal
flow is established.
For some high pressure systems, where the vent hole continuously leaks, a 6:32 seal screw is
provided which should be inserted into the vent hole and tightened.