- Reliable Power, Intelligent Control & Safe Automation for Process Plants
Electrical &
Instrumentation (E&I) Engineering
Electrical & Instrumentation (E&I) Engineering
Electrical and Instrumentation systems are the backbone of safe, reliable, and efficient plant operation. At Sherle, we provide practical E&I engineering services for chemical and process plants – from early design through detailed engineering and commissioning support.
We work with startups, SMEs, and established manufacturers, delivering flexible and scalable electrical, instrumentation, and automation solutions for pilot plants, modular skids, and commercial facilities.
Our E&I engineering is tightly integrated with process design, ensuring that power systems, instruments, controls, and safety functions work together – not in isolation.
Our Electrical & Instrumentation Engineering Capabilities
We support the full E&I engineering lifecycle, including:
- Electrical power system design and load estimation
- Instrumentation selection, sizing, and specification
- PLC, DCS, and SCADA system design
- Control philosophy and automation logic development
- Panel engineering, cabling, and wiring documentation
- Hazardous area classification and compliance
- FAT, SAT, and commissioning support
Our focus is always on clarity, safety, and operability, not unnecessary complexity.
What We Do
Electrical Engineering Capabilities
Sherle delivers complete electrical system engineering for skid-mounted units, pilot plants, utilities, and integrated commercial process plants.
Our work begins with realistic load estimation and power system definition, progressing from preliminary load lists during BEP to equipment-specific calculations during Detailed Engineering. We evaluate phase balancing, diversity factors, short-circuit levels, voltage drop, cable sizing, derating, earthing, and lightning protection to ensure safe and reliable power distribution.
We develop Single Line Diagrams (SLDs) for MCCs, PMCCs, substations, and utilities, covering LV and MV switchgear selection, transformer sizing, emergency power systems, UPS and battery banks, motor starters, and protective relay coordination.
Electrical equipment selection includes motors, VFDs, soft starters, heaters, furnaces, trace heating systems, lighting, panels, cable trays, and routing layouts for both hazardous and non-hazardous areas.
Instrumentation engineering defines how a process is measured, controlled, and protected.
We prepare datasheets for pressure, temperature, level, and flow instruments including Coriolis, vortex, magnetic, and thermal mass flow meters; radar and ultrasonic level transmitters; analyzers (pH, conductivity, O₂, CO₂, IR/UV); control valves; on-off valves; regulators; safety valves; and rupture discs — fully coordinated with process and relief system design.
Instrumentaion Engineering Capabilities
Safety
Instrumented
Systems (SIS)
For safety-critical applications, Sherlesupports SIS and functional safety engineering in collaboration with specialist partners. This includes SIL assessments, instrumented protective functions, emergency shutdown logic, safety integrity verification, and Cause & Effect matrix development.
We design PLC, DCS, and SCADA systems for pilot plants, modular skids, batch processes, continuous plants, and R&D facilities.
Our automation scope includes:
- Control system architecture and I/O design
- Redundancy and network topology
- Communication protocols (HART, Modbus, Ethernet/IP, Profibus, OPC UA)
- Control narratives and operating philosophy
- Interlocks, permissives, alarms, and shutdown logic
For batch plants, we develop recipe management and sequencing logic.
For continuous plants, we focus on stable PID control and startup/shutdown automation.
Control & Automation System Design
Wiring, Cabling & Panel Engineering
We deliver complete wiring and panel-level documentation required for fabrication and installation, including cable routing, tray and trench layouts, junction box layouts, panel GA drawings, terminal block diagrams, interconnection wiring, and earthing layouts.
Electrical and instrumentation engineering for skid-mounted pilot plants is a key differentiator for Sherle and especially critical for startups.
We design compact E&I layouts optimized for modular skids, including instrument wiring within skids, PLC-based automation, and seamless integration of metering pumps, compressors, heaters, reactors, and analytical instruments. Data logging, historian configuration, and remote monitoring options are incorporated to support R&D, scale-up analysis, and reporting.
Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) support ensures pilot plants are fully functional before and after installation.
E&I Engineering for Skid-Mounted Pilot Plants
Through Sherle and trusted partners, we support loop checking, instrument calibration, panel energization, motor checks, interlock testing, control logic validation, FAT/SAT execution, and startup assistance — ensuring a smooth transition from engineering to operation.
Commissioning & Startup Support
Where We Add Value
Startups & Pilot Plants Simple, reliable automation and instrumentation for early-stage validation. SMEs & Growing Plants Scalable E&I systems that grow with capacity and complexity. Established Facilities Robust designs for revamps, expansions, and performance improvement.
- Industries We Serve
