Pressure basis
Gauge, absolute or differential; minimum, normal, maximum and design pressure; vacuum and overpressure cases.
Pressure measurement
Define pressure measurement around the process and its consequence.
Gauge, absolute and differential pressure devices for monitoring, control, alarm and protective functions.
Range is only the beginning.
Static pressure, temperature, pulsation, vibration, overpressure, impulse-line arrangement and process compatibility all affect reliability.
ISC Controls helps clarify the pressure basis, required accuracy, response, wetted materials, diaphragm seals, manifold arrangement, connection, mounting, output, diagnostics, certification and relationship to the control or shutdown function.
Selection checklist
Account for normal operation and abnormal events.
The selected range and construction should tolerate the real operating environment without sacrificing useful resolution.
Process compatibility
Medium, temperature, corrosion, plugging, solids, hygienic needs and suitable wetted materials or seals.
Installation effects
Impulse lines, manifolds, remote seals, elevation, ambient conditions, vibration, pulsation and access.
Signal integrity
Accuracy, rangeability, response, diagnostics, output, power, hazardous-area approval and system interface.
Engineering support
Specify a complete pressure-measurement assembly.
We can review the transmitter, primary isolation, manifold, seals, accessories and documentation as one application.
Range and performance review
Materials and seal selection
Mechanical and system interfaces
Datasheet, offer and document review