Chapter Three: Overview Applications with a Large Differential Pressure
31
Applications with a Large Differential Pressure
Applications with a large differential pressure between the inlet and outlet, or a large inlet
pressure, may require special precautions:
• If the inlet pressure is more than two times the pressure transducer full scale pressure or
[310 kPa], whichever is greater
You must ensure that the valve will never be fully opened to the pressure transducer.
Pressures in excess of 45 psia [310 kPa] or two times the pressure transducer full scale
(whichever is greater) may damage the pressure transducer.
• The inlet pressure on the valve is 150 psia [1034 kPa]
This is the maximum inlet pressure rating of the valve. The force of high inlet pressure
on the valve may inhibit valve movement. A normally closed valve may be unable to
open.
Labels
The 649 controller carries a serial number label which identifies the serial number, model
number, calibration gas, full scale flow rate, and pressure range. It also displays the CE Mark
which indicates compliance with European directives. The serial number label is located on the
back of the unit.
Figure 13: Serial Number Label
To Next Page
Loading...
