Tablets & Capsules

TC0418

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20 April 2018 Tablets & Capsules the hose at the top of the flow meter during operation can cause the meter's zero setting to drift, leading to flowrate errors. In nearly every installation I've seen, the flow meter is mounted using a bracket around each end, just before the sanitary fitting, as shown in Photo 1. However, this mounting method can choke the flow meter and cause the zero setting to drift. To prevent this, the flow meter should be suspended with nothing touching it but two tri-clover clamps, one at each end. To achieve this suspension but still have the flow meter mounted securely, attach six-inch straight sanitary tubes to the meter's inlet and outlet sides using tri-clover clamps. This isolates the flow meter and prevents it from binding. This also provides six inches of straight tubing both before and after the flow meter, which is recommended by most manufacturers to prevent or limit turbulence at the meter's sensor. The six-inch tubes also serve as installation points for the flow meter's mounting brackets. Each tube should be secured in place with a top and bottom bracket, as shown in Figure 1. This ensures that the flow meter is securely mounted and prevents twisting. You can also install a ball valve at the end of each of these six-inch tubes, so you can easily isolate the flow meter for re-zeroing. The rest of the set u p typically involves installing the manifold, which splits the supply tube into multiple branches to feed the coater's spray guns. The details of Mounting the flow meter Mounting the flow meter is critical because any disturbances to the outside of the meter can cause flowrate fluctuations. Something as simple as bumping Photo 1: Locating mounting brackets directly on the ow meter as shown here can choke the meter and cause the zero setting to drift. Be Confident in Your Choice Choose Colorcon, world leader in pharmaceutical and nutritional solid oral dose solutions as your formulation partner for every phase of your product development, scale-up and manufacturing. To learn more about our superior excipients and film coatings visit www.colorcon.com From Core to Coating Your Supplier of Choice Colorcon T&C April insert_7x4.875.indd 1 3/8/18 1:39 PM

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