Experienced specialists
Instrument health checks performed by senior field instrumentation experts.
Process efficiency by the experts
Verification & Calibration Services for Process Instrumentation in Greece
Keep your flow, temperature and pressure instrumentation operating at peak performance. SEMAC Automation provides expert verification & calibration across Attica, Thessaloniki and throughout Greece — helping industrial plants maximize productivity, profitability and regulatory compliance, without removing the instrument from the process.
CALIBRATION
On-site verification & calibration services
SEMAC Automation calibrates the three measurements that decide whether a process is profitable, safe and compliant: flow, temperature and pressure. Every service is delivered in the field, against a traceable reference, with a report that states the deviation found and the uncertainty of the measurement.
Flow Meter Calibration & Verification
In-situ verification and calibration of flow meters using a traceable master meter in series, so the line keeps running while the measurement is proven.
Learn moreTemperature Sensor & Transmitter Calibration
Comparison calibration of RTDs, thermocouples and temperature transmitters with a portable dry-block or bath reference, on site.
Learn morePressure & Differential Pressure Calibration
On-site calibration of gauges, pressure and differential-pressure transmitters and switches, using traceable comparators and reference gauges.
Learn moreIs your instrumentation performing as it should?
Inaccurate or poorly maintained measurement can lead to production losses, quality issues, unnecessary downtime, increased costs and compliance risks. Regular verification & calibration confirms instrument health and supports confident maintenance decisions — for industrial plants in Athens, Thessaloniki and across Greece.
Reduced measurement uncertainty
Ensure data integrity across critical process points.
Early detection of issues
Identify drift or coating before faults occur.
Less process downtime
Perform checks while the process is running.
Better maintenance planning
Move from reactive to predictive maintenance.
THE COMPARISON METHOD
How in-situ flow meter calibration works
The most practical way to prove a flow meter in a working plant is to put a calibrated reference next to it and compare the two under the same conditions. This page explains that method step by step — what the master meter is, what the meter under test is, what gets recorded, and why the result is worth having.
See how it worksIsometric diagram of a calibration setup. Fluid flows from left to right through a pipe. It passes first through the master meter, the traceable reference instrument, then along a straight run of ten pipe diameters into the meter under test, and leaves through a further straight run of five pipe diameters. Both straight runs belong to the meter under test and are provided where its type requires them. A data acquisition unit below reads both meters at the same time and calculates the percentage deviation between them.
Master meterTraceable calibration
Meter under testYour installed instrument
Verification & calibration without removing the instrument from the process
SEMAC's verification & calibration services provide a practical and reliable way to check instrument performance and health while minimizing process disruption. Our service team supports your maintenance strategy with expert knowledge in instrumentation, process automation and industrial applications.
FLEXIBLE ENGAGEMENT
Calibration plans tailored to your needs
Whether you need a one-time check or ongoing support, SEMAC offers flexible engagement models to ensure your instrumentation remains accurate and reliable.
On-demand services
Fast and reliable verification & calibration when you need it most. Ideal for troubleshooting, urgent compliance checks, or a one-off requirement.
Annual calibration contracts
Peace of mind with scheduled periodic visits. We manage your calibration schedule across all instruments, ensuring continuous compliance and optimal performance.
A simple verification & calibration process
- 01
Contact the SEMAC service team
Tell us about your installed instrumentation, process conditions and maintenance requirements.
- 02
Service assessment
Our team reviews the application and recommends the appropriate verification & calibration approach.
- 03
On-site verification & calibration
SEMAC performs instrument health checks with minimal disruption to your process.
- 04
Report & recommendations
Receive clear feedback on instrument condition, performance and next actions.
WHY CHOOSE SEMAC?
Verification & calibration excellence
Regulatory support
Documentation that supports your quality management and regulatory requirements.
Improved uptime
Increase process reliability by identifying potential measurement failures early.
Reduced uncertainty
Actionable data to reduce maintenance uncertainty and optimize calibration intervals.
On-site, in-situ
Verified performance without the need for equipment removal or line shutdown.
Expert guidance
Receive professional recommendations for corrective actions and system optimization.
Built for demanding industrial applications
Serving industrial plants across Greece
SEMAC Automation operates from two service hubs — Thessaloniki and Athens (Attica) — giving us fast, on-site reach across Central Macedonia, Attica and the rest of Greece. Wherever your plant is located, our field engineers can reach you for verification & calibration with minimal disruption to your process.
Beyond calibration
We also work on the instrument itself
Choosing it, putting it into service, repairing it and answering the phone when something is not right — the work around a measurement point that is not a certificate.
Your trusted partner for verification & calibration
SEMAC Automation combines deep instrumentation expertise with practical field experience. Our calibration procedures are built to ISO/IEC 17025 requirements, and our ESYD accreditation is in progress. From flow to pressure and temperature, we support plants with solutions designed for performance and safety.
2SERVICE HUBS — THESSALONIKI & ATHENS
1994IN INDUSTRIAL MEASUREMENT SINCE
ISO 17025ESYD ACCREDITATION IN PROGRESS
Common questions
Tell us about the measurement point you need checked
Describe the instrument and your plant, and we will tell you what can be verified in-situ, what needs a workshop calibration, and what it will take.
Technical support - TECHNICAL SUPPORTservices@semac.gr
Direct lines - DIRECT LINESThessaloniki: (+30) 231 056-9031Athens: (+30) 210 462-2625
Keep your instrumentation performing at its best
Speak with SEMAC's service team to discuss your maintenance needs and plan your verification & calibration service.