Instrumentation Design and PLC and DCS Engineering
We engineer field instrumentation, control systems and the safety instrumented system as one coherent design
Instrumentation Design and PLC
and DCS Engineering
Instrumentation and control engineering bridges process design and operational reality. Poorly selected field instruments, a distributed control system architecture that cannot handle the input and output count, or an operator interface that overwhelms operators during upsets are common root contributors to process incidents. Our team delivers vendor neutral instrumentation and control system design, taking you from field instrument datasheets through control system architecture, operator interface graphics, alarm rationalisation and safety instrumented system integration, all aligned to ISA, IEC and NAMUR standards.
Instrumentation Design and PLC and DCS Engineering workflow
Gather control philosophy, P&IDs, SRS, HFE requirements, and alarm philosophy as the design basis.
Select transmitter type, accuracy class, rangeability, process connection, and hazardous area certification for each tag.
Define DCS/SIS/PLC topology, I/O count, network segregation, redundancy, and uninterruptible power supply.
Develop HMI graphics per ISA 101, rationalise alarms per ISA 18.2, conduct human factors review.
Develop C&E matrix linking all trip initiators to ESD/F&G outputs with voting, bypass, and inhibit logic.
Prepare test specifications covering all logic paths, witness factory and site acceptance tests, issue punch list.
Every deliverable from basis to handover
Complete Instrumentation Design and PLC and DCS Engineering scope covering every calculation, drawing, specification, and construction support activity.
Outcomes of Instrumentation Design and PLC and DCS Engineering
- We build out safety instrumented system integration and proper separation from the control system
- We reduce operator error through a clearer operator interface
- We support verification of the SIL claim
- We improve alarm management
- We map the design to ISA 5.1, ISA 18.2 and ISA 101
- We document the IEC 61511 safety instrumented system lifecycle
- We support NAMUR NE compliance
- We produce documentation that withstands customer audit
- We improve control system tuning and response
- We reinforce operator situation awareness
- We reduce nuisance alarms
- We back realistic operator training
- We right size instrument and control system cost
- We reduce commissioning rework
- We improve vendor pricing through clear specification
- We support lifecycle optimisation
Codes & standards we work to
Triggers that signal the need
Where Instrumentation Design and PLC and DCS Engineering applies
Wellheads, separators, gas compression, FPSO topsides, produced water systems.
Distillation columns, reactors, heat exchangers, storage spheres, LPG handling.
Cryogenic exchangers, liquefaction trains, BOG compressors, storage and sendout.
Reactive systems, batch reactors, solvent handling, runaway reaction scenarios.
Boilers, HRSGs, steam headers, hydrogen systems, ammonia SCR units.
Sterile vessels, CIP/SIP, pressure fermenters, solvent recovery, spray dryers.
Tangible deliverables
- Instrument index and datasheets
- Control system architecture diagram
- Operator interface graphics design to ISA 101
- Cause and effect matrix
- Alarm philosophy
- Control room layout
Ready to start your project?
Speak with our team to scope an engagement tailored to your facility, regulatory context, and lifecycle stage.