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Measurement Instrumentation
Control Equipment and Experience
for Indiana's Process Control Needs
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Pressure Measurement
Key Terms
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Gauge: A mechanical visual pressure indicator.
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Switch: An electrical device which activates at a predetermined
pressure.
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Transmitter: An analog electrical device which sends a varying
signal proportional to the pressure being sensed.
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Diaphragm (or chemical) seal: An attached mechanical membrane
which makes contact with the process and senses the pressure without allowing
the media to touch the pressure instrument.
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Capillary: A flexible armored hose to allow mounting of the
pressure instrument at a convenient location away from the process connection.
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Steam syphon: A "gooseneck" connecting tube used to collect steam
condensate to protect the pressure instrument from high temperatures.
What we typically need to know:
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Type of device needed
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Pipe Size and type connection
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Gauge dial size 2 1/2", 4 1/2", or other
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Pressure range & temperature
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Media to be sensed
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Vibration present
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Type of display or output needed
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Environmental conditions
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Electrical classification and power available
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Some pressure gauges use a single direct drive sensing element
for vibrating or pulsating conditions.
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New Application? Engineering Questions?
Pressure Measurement Problems?
Talk to an Applications Specialist
ACME Process Equipment Company, P.O. Box 856, Carmel, IN 46082
Phone (317) 846-3321, Fax (317) 846-3328, Email info@acmeprocess.com
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