Humidity calibration

Reliable humidity calibration services for hygrometers, thermo-hygrometers, dataloggers, humidity transmitters and other humidity measuring instruments, with ISO/IEC 17025 accredited calibration certificates or ISO 9001 calibration reports.
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Humidity calibration services by laboratory

Each laboratory covers different humidity calibration services, accreditation scopes and documentation options.

Depending on the instrument type and required calibration document, the service is performed in the appropriate laboratory and supplied with either an ISO/IEC 17025 accredited calibration certificate or an ISO 9001 calibration report.

Calibration is carried out by comparison with laboratory reference standards. Our humidity laboratory in Italy uses humidity generators, mirror hygrometers and temperature reference standards to measure relative humidity, dew point temperature and air temperature across the applicable calibration ranges.

Padua, IT - Calibration Laboratory (ACCREDIA)
• Accredited relative humidity calibration from 10% to 92% RH
• Combined humidity and air-temperature calibration with predefined or custom points
• Accredited dew-point calibration from −20 °C to +60 °C
Regenstauf, DE - Accredited Calibration Service via Subcontractor
• Accredited calibration for instruments with external or integrated humidity sensors
• Standard calibration at 15% and 70% RH for external probes
• Standard calibration at 20%, 50% and 80% RH for integrated sensors
Padua, IT - ISO 9001 Calibration Reports
• Relative humidity, air temperature or combined calibration reports
• Standard isotherms or customer-selected humidity and temperature points
• Absolute humidity and dew-point calibration reports available
Regenstauf, DE - ISO 9001 Factory Calibration
• In-house factory calibration at 20%, 40%, 60% and 80% RH
• Calibration performed at approximately 23 °C
• Dedicated calibration service for the EB-Logg 80CL

What instruments can we calibrate?

We calibrate Senseca instruments and instruments from other brands.

Below you will find the main instrument families and typical configurations covered by our humidity calibration services, including accredited calibration where applicable.

Mechanical hygrometers, thermo-hygrographs and mechanical psychrometers can also be calibrated.

ACCREDIA | DAkkS via partner lab | ISO 9001
Hygrometers and thermo-hygrometers
Calibration of portable and fixed-installation instruments measuring relative humidity and air temperature, including models with external, integrated or interchangeable probes.
Download Sample Certificate
ACCREDIA | DAkkS via partner lab | ISO 9001
Humidity data loggers and transmitters
Calibration of instruments used for continuous humidity monitoring and recording, including transmitters, data loggers and complete measuring systems with connected sensors.
Download Sample Certificate
ACCREDIA | DAkkS via partner lab
Dew-Point and chilled-mirror hygrometers
Calibration of dew-point instruments and chilled-mirror hygrometers across a dew-temperature range from −20 °C to +60 °C.
Download Sample Certificate
ACCREDIA | ISO 9001
Saturated salt solutions
Calibration of saturated salt solutions used as stable humidity references for checking relative-humidity instruments.
Download Sample Certificate
ISO9001 
Absolute humidity instruments
Calibration of instruments and transmitters measuring absolute humidity at defined measurement points.
Download Sample Report
ACCREDIA | ISO 9001
Electrical psychrometers
Calibration of electrical psychrometers using dry- and wet-bulb measurements under controlled conditions.
Download Sample Certificate

Key applications for Humidity calibration

Pharma, Healthcare & Cleanrooms
Humidity control affects microbial growth, material stability and cleanroom performance. Traceable calibration supports regulated environments and audit-ready documentation.
HVAC, Buildings & Indoor Air Quality
HVAC systems and IAQ monitoring rely on accurate RH measurement to avoid condensation, mould risk and comfort issues. Calibration improves control efficiency and comparability across sites.
Warehouses & Cold Chain
Storage humidity affects packaging, powders, paper products and electronics. Calibrated data loggers provide reliable evidence for customers and internal quality assurance.
Industrial Processes & Drying
Drying, coating and compressed air conditioning often depend on RH or dew point specifications. Calibration helps prevent rejects and optimise energy use.
Quality Systems & Customer Requirements
Many customers require traceable calibration of humidity measurement equipment. Accredited certificates are widely accepted for quality systems and customer audits; ISO 9001 reports may be suitable when accreditation is not mandatory.
Environmental Monitoring & Research
Long-term monitoring programs require stable, comparable RH measurements. Calibration supports trend validity and inter-site comparability over seasons and years.

Do you need tocalibrate your instruments?

Tell us the instrument type, measuring range and required calibration points. We will identify the appropriate calibration certificate or report and prepare a dedicated quotation — whether this is your first calibration with us or a renewal.

Request a quote