Accurate instrumentation and flawless pre-commissioning are critical for safe, reliable, and efficient plant operations. We provide end-to-end calibration and pre-commissioning services for all field instruments, ensuring systems are installed, tested, and ready for smooth commissioning and startup.
Our services comply with international standards, OEM guidelines, and project specifications, helping clients achieve operational readiness while minimizing startup risks, delays, and rework.
Field Instrument Calibration Services
We perform precision calibration of all field-mounted instruments across process, utility, and safety systems to ensure accuracy, repeatability, and compliance.
Instruments Covered
- Pressure Instruments
Pressure Transmitters, Pressure Gauges, DP Transmitters, Pressure Switches - Temperature Instruments
RTDs, Thermocouples, Temperature Transmitters, Thermowells - Flow Instruments
Flow Transmitters, Orifice Plates, Vortex, Magnetic, Ultrasonic Flowmeters - Level Instruments
Level Transmitters, Radar, Guided Wave Radar, Ultrasonic, Level Switches - Analytical Instruments
pH, Conductivity, ORP, Gas Analyzers, Oxygen Analyzers - Control Valves & Final Elements
Control Valves, Positioners, I/P Converters, Actuators - Safety & Shutdown Instruments
SIS Sensors, ESD Switches, Field Devices for Safety Loops
Calibration Scope
- As-found and as-left calibration
- Loop accuracy verification
- Zero, span, and linearity checks
- Instrument range and unit verification
- Calibration using traceable master instruments
- OEM and project-specific calibration procedures
- Calibration tagging and documentation
Pre-Commissioning Activities
Our pre-commissioning services ensure that instruments, loops, and systems are fully tested and verified before live commissioning.
Key Pre-Commissioning Activities
- Instrument installation inspection and verification
- Point-to-point wiring checks
- Continuity and insulation resistance (IR) testing
- Loop checking from field to control system (DCS / PLC / SIS)
- Signal simulation and functional testing
- Alarm and trip verification
- Control valve stroke and fail-safe testing
- Interlock and cause-and-effect validation
- Marshalling cabinet and junction box checks
- Power-up readiness verification
Documentation & Deliverables
We provide complete, audit-ready documentation to support commissioning, handover, and future maintenance.
- Calibration certificates (traceable to national / international standards)
- Loop check reports
- Pre-commissioning checklists
- Test records and punch lists
- As-built documentation support
- Commissioning readiness dossiers
Standards & Compliance
Our calibration and pre-commissioning activities align with:
- ISO / IEC standards
- ISA recommended practices
- OEM manuals
- Project specifications
- Client HSE and QA/QC requirements
Why Choose Us
- Experienced instrumentation engineers & technicians
- Industry-proven procedures and tools
- High accuracy and repeatability
- Reduced commissioning delays and rework
- Improved plant safety and reliability
- Support for greenfield, brownfield, and shutdown projects