Thermo Scientific DCT6088, User Manual

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System Installation
Transducer Installation
Use the following guidelines when selecting the transducer site:
●
Choose a section of pipe that is always full of liquid, such as a vertical
pipe with up flow or a full horizontal pipe.
●
The site should have a straight run equivalent to at least 10 pipe
diameters upstream and 5 pipe diameters downstream from any elbows,
tees, throttling valves, orifices, reduced sections, or other flow
disturbances.
●
Up to 30 diameters of straight run may be required upstream from the
flowmeter after a pump, control valve, or double piping bend for
greater accuracy. A distance of 5 diameters downstream is usually
sufficient under all circumstances.
●
Always mount the transducers on the sides of the pipe in the 3 o’clock
or 9 o’clock position on horizontal pipes. Positioning the transducers in
this manner prevents signal loss that can be caused by sediment along
the bottom of the pipe or gas bubbles and air pockets along the top of
the pipe.
●
Ensure that the pipe skin temperature is within the transducer
temperature rating. The transducers are rated for -40°F to +212°F
(-40°C to +100°C). Temperature ratings up to 392°F (200°C) are
available with optional high temperature transducers.
●
Pipes with excessive corrosion or scaling create conditions that can
make accurate measurement difficult or impossible. If possible, avoid
selecting these sections of pipe as mounting locations.
●
Remove any dirt, grease, rust, loose paint, or scale from the pipe surface
prior to mounting the transducers. To obtain best results on aging and
rough pipes, a file or grinder may be required to clean the pipe down to
bare metal.
If your application cannot follow these guidelines completely, meaningful
flow measurements (with some loss in accuracy and stability) may still be
obtained, depending on signal quality.
Thermo Fisher Scientific DCT6088 User Guide 2-3