Recent Entries

Heat Detector: Fusible Loop System

Besides producing flame, fire also produces smoke and heat.  Hence to detect the existence of fire, heat detector can be used. Compared to flame detector and smoke detector, heat detector is slow in detecting fire because it only activates once a fire has produced sufficient heat of which heat detector could respond. However, heat detector could provide useful back up or as alternative to flame and smoke detectors. One mean to sense heat is by utilizing Fusible Loop System. Read More..

Insight | |

Halogen Free and Low Smoke Instrument Cable Sheath

The requirement to have halogen free and low smoke cable is driven by the behavior of instrument cable sheath when exposed to fire. By having halogen free properties, the cable sheath is expected not to produce toxic smoke which can be dangerous to personnel during fire.
Instrument Engineer |

Control System Architecture

Control system architecture depicts the architecture of the plant control systems and the interface among the systems required for overall operation of the process plant.

The required Control System is determined by the  level of functionality,  complexity and safety of a plant. This may comprise of process control system, safety instrumented system, HIPPS, fire and gas system, package unit control system. Read More..

Instrument Drawing |

Instrument Range Selection

Instrument range shall be selected based on operating range of process to be measured. In common practice, it is recommended to select instrument with full scale range that can give operating process reading between 30% and 70% especially for pressure gauge. The following is an example of selecting pressure gauge range Read More..

Insight |