History of OPC Protocol
OPC – History OPC (OLE for Process Control) is an industry standard created with the collaboration of a number a leading worldwide automation and hardware software suppliers working in cooperation…
Diaphragm Pressure Sensors
The Diaphragm Pressure Gauge uses the elastic deformation of a diaphragm (i.e. membrane) instead of a liquid level to measure the difference between an unknown pressure and a reference pressure.…
How do You Select a Pressure sensor?
Deciding which pressure sensor to purchase is not an everyday task, and is one that can be confusing. However, the decision is an important one as it will have an…
What’s the problem with shock and vibration ?
Shock and vibration are among the worst enemies of any pressure sensor. They are also the hardest to identify, and even then it can be very difficult to rectify the…
What is the thermal effect on Sensors?
Thermal effect on sensor/transmitter can be found mainly on Zero or Span effects. What is the thermal effect on zero? Thermal zero shift represents the change in null resulting from a…
IP Ratings and Equivalent NEMA Ratings
IP Ratings (Ingress Protection) and Equivalent NEMA Ratings Explained IP Ratings An IP rating contains two numbers (i.e. IP65) in most instances which relate to the level of protection provided…
ATEX Ratings, Intrinsic Safety, Hazardous Areas and Explosive Atmospheres
Please note that this page provides helpful information only, detailed reference should be taken from an appropriate accredited agency or organisation. Protection Concepts Zone Hazard Protection Concepts 0 In which…
Why 4-20 mA Standard is so popular ?
4-20 mA Standard 4-20mA has an inherent ‘live zero’. Zero engineering units is 4.0mA, not 0.0mA. 0.0mA indicates an open circuit, a failure or a fault mode like cut wires…
Pressure Transmitters Installation Tips
There are a number of points to consider in a pressure measurement application. All require some thought in both the planning and execution. Location of Process Connections Process connections should…
Helix and Spiral Tubes – Pressure Sensor
Spiral-Type Bourdon Tube – One limitation of the C-type bourdon tube is the relatively small amount of tip movement. A spiral-type bourdon tube provides more tip movement. The spiral-type tube…
