Installation
The Gauge Head
● For best performance the beam must pass through a representative
cross-section of the process material being measured. The gauge
measures only the material that passes through the beam. Prevent
suspended solids from settling out of the measured area by mounting
the gauge head on a vertical section of pipe.
● For mounting on a horizontal pipe:
● Position the beam path at a 30- to 45-degree angle from vertical.
This position tends to average density variations caused by settling,
while reducing the effect of any trapped gases or solids that
accumulate in the top or bottom of the pipe.
● If the process material is a solution, a light slurry, or a single-phase
liquid that will not separate, the gauge head can be mounted such
that the beam is horizontal.
● If the process material is a slurry, position the gauge head as far as
possible from any elbows, tees, or valves (these tend to separate
suspended solids). Position the beam path in the plane of the upstream
elbow so the measurement includes any uneven distribution caused by
the fitting.
Figure
3–1. Gauge installation examples
3-8 DensityPRO+ Installation Guide Thermo Fisher Scientific
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