Electronic Equipment Purging Principles & Standards
What is Purging? Purging/pressurization systems permit the safe operation of electrical/electronic equipment under hazardous conditions when approved hazardous location equipment
Variable Frequency Drive (VFD) Working Principle
History of Variable Frequency Drives (VFD) When Tesla first introduced the 3-phase alternating current (AC) induction motor in 1888, he
Thermowell Design Guidelines
When fluid flows past a thermowell inserted into a pipe or duct, vorticies form at both sides of the well. These vorticies
Coriolis Mass Flow Meter Working Principle
Mass flow meters are the types of flow meters that are mainly employed in mass-related processes such as chemical reactions,
Working Principle of Vortex Flow Meter
Vortex flow meters measure the frequency of vortices generated by a bluff body or shedder bar to calculate an equivalent volumetric flow rate.
Thermal Mass Flow Meter – Principle, Advantages, Applications
Thermal mass flow meter principle is rate of heat absorbed by a fluid flowing in a pipe or duct is directly proportional to its mass flow.
Oval Gear Meter – Principle, Advantages, Limitations, Applications
Oval Gear Meter measures flow by using a geared rotor to pass known volumes of fluid through a housing. (Positive Displacement Flow Meter)
Facts About Control Valves
Study facts about control valves include pressure drop of control valves, capacity requirements of control valves, valve rangeability, characteristics of
HART Communication Protocol Overview
HART is a digital signal that rides on a standard 4 mA … 20 mA process control loop. In the
Intrinsic Safety Protection ia and ib
Difference Between ia and ib Intrinsic Safety Protection ProtectionType ia Apparatus is designed so that it is suitable for Zone