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Control and Instrumentation Glossary

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WAN - Wide Area Network
A network usually constructed with serial lines extending over distances greater than one kilometre.

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Wobbe Index
A comparative measure of thermal energy flow through a given size of orifice. A measure of the interchangeability of gases used for combustion.
Gases which have the same Wobbe index can replace each other without a change in the relative air-fuel ratio at the same fuel metering settings.
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C&I Resources

Cable Gland Selector
CE Marking
Flange Dimensions
Ingress Protection
Pipe Schedules
Relief Valve Orifice Size
Temperature Class
Temperature Conversion
Thermocouple Types
Valve Leakage
Vortex Meters
Wires and Cables


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