Measurement Instrumentation
Control Equipment and Experience
for Indiana's Process Control Needs

Pressure Measurement

Key Terms

  • Gauge:  A mechanical visual pressure indicator.
  • Switch:  An electrical device which activates at a predetermined pressure.
  • Transmitter:  An analog electrical device which sends a varying  signal proportional to the pressure being sensed.
  • 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.
  • Capillary:  A flexible armored hose to allow mounting of the pressure instrument at a convenient location away from the process connection.
  • 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:
  • Type of device needed
  • Pipe Size and type connection
  • Gauge dial size 2 1/2", 4 1/2", or other
  • Pressure range & temperature
  • Media to be sensed
  • Vibration present
  • Type of display or output needed
  • Environmental conditions
  • Electrical classification and power available
Some pressure gauges use a single direct drive sensing element for vibrating or pulsating conditions.
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

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