-- Precision in Every Percent
1. What Is Calibration?
Calibration is the process of comparing a measuring instrument’s readings against a certified reference standard to determine accuracy and traceability. For humidity instruments, such as hygrometers, transmitters, and data loggers’ calibration ensures that every measured value of relative humidity truly represents the environmental condition.
Through calibration, deviations are identified and corrected, ensuring instruments remain reliable, consistent, and compliant with quality standards.
2. Why Humidity Calibration Is Important?
In industries such as pharmaceutical production, biotechnology, cleanroom control, HVAC validation, and calibration laboratories, humidity stability is crucial for both process performance and regulatory compliance.
Over time, humidity sensors can drift due to contamination, aging, or exposure to harsh environments. Without regular calibration, this drift can lead to:
- False environmental readings
- Process deviations or failed validations
- Product quality issues or regulatory non-compliance
3. Regular calibration ensures:
✅ Accuracy and Traceability - Results linked to national or international standards.
✅ Regulatory Compliance - Supports GMP, GLP, ISO 9001 requirements.
✅ Confidence in Measurement - Reliable data for audits and validation reports.
✅ Consistency Across Systems - Uniform readings among different transmitters and facilities.
4. STN’s Humidity Calibration Capability
STN Instruments provides both in-house and on-site relative humidity calibration services designed to meet the highest measurement standards and fast operational needs.
In-House Calibration Laboratory
Our humidity calibration is performed using advanced reference systems, including:
- Chilled Mirror Hygrometer: Primary reference for humidity, providing high accuracy and long-term stability.
- Humidity Generator: Capable of generating stable humidity environments for calibration across a wide range.
- Precision Thermometer (±0.05 °C): Used as a reference for temperature traceability.
These reference standards allow STN to provide traceable, reproducible humidity calibration with excellent measurement uncertainty — ensuring full confidence in your results.
On-Site Calibration Service
For facilities requiring minimal downtime or cleanroom validation, STN offers on-site calibration using a newly calibrated Rotronic humidity probe as a portable standard for one-point verification or validation.
This service is ideal for GMP manufacturing areas, stability chambers, environmental rooms, and monitoring systems that cannot be easily transported.
5. Fast Response and Flexible Service
STN understands that humidity instruments often operate continuously and cannot afford long downtime. We provide fast, responsive calibration support to minimize disruption:
- Within 5 hours’ drive: Next-day response available.
- Rush service (ground trip): Second-day turnaround.
- Rush service (flight trip): Three-day turnaround including travel and report completion.
With every service, customers receive clear calibration reports, traceable results, and professional technical support.
6. Your Partner in Measurement Accuracy
Whether you require periodic instrument calibration, chamber validation, or emergency verification after maintenance, STN Instruments provides reliable, traceable humidity calibration with precision you can trust.
For questions about calibration procedures, uncertainty analysis, or service scheduling, please contact us — our metrology specialists are ready to help design a calibration plan tailored to your facility.
📧 Email: info@stninstruments.com
🌐 Website: www.stninstruments.com
📍 Location: Portland, Oregon, USA
STN Instruments – Reliable Measurement for a Trusted World.