Comprehensive Overview of Temperature and Humidity Logger Calibration Services in the US for 2025

Did you know that regular calibration of temperature and humidity loggers is essential to avoid costly errors and regulatory issues? Discover practical insights on leading US calibration providers, how their services boost accuracy, compliance, and operational efficiency for your critical measurements.

The Importance of Calibrating Temperature and Humidity Loggers

Temperature and humidity data loggers are commonly used in pharmaceutical storage, environmental monitoring, food safety, manufacturing, and research. Over time, sensors may drift due to environmental factors, aging, or damage, which can affect measurement accuracy. Calibrating these devices:

Provides traceability to national or international standards
Verifies measurement accuracy within specified tolerances
Supports adherence to industry regulations such as FDA and ISO standards
Helps reduce risks related to quality control issues or product loss
Offers documented evidence useful for audits or inspections

Calibration intervals generally depend on how frequently the device is used, the criticality of measurements, and compliance requirements.

Overview of Calibration Providers for Temperature and Humidity Loggers in the US

ThermoWorks — ISO/IEC 17025 Accredited Calibration Services

ThermoWorks offers ISO/IEC 17025:2017 accredited calibration services across a broad temperature and humidity range for probes, meters, data loggers, and related systems. Key aspects include:

Temperature Calibration Range:
Probes calibrated from -328 to 1220 °F (-200 to 660 °C)
Meters calibrated from -454 to 3214 °F (-270 to 1768 °C)
Humidity Calibration Range:
10% to 95% relative humidity (RH) at ambient temperatures of 59 to 95 °F (15 to 35 °C)
Turnaround Time: Typically within 5 business days
Accreditation: A2LA accredited to ISO/IEC 17025:2017, signifying recognized technical competence and traceability
Calibration Methods: Utilize calibrated reference instruments such as comparison baths, reference thermometers, and humidity generators
Calibration Certificates: Include detailed measurement data, pass/fail evaluation, and consideration of measurement uncertainty
Support: Pricing transparency and comprehensive services covering various device types

ThermoWorks applies standardized procedures to provide documented confidence appropriate for regulated environments and quality assurance programs.

Fluke Calibration — NVLAP Accredited Services with Specialized Facilities

Fluke Calibration operates two primary US facilities focusing on different temperature calibration methods:

Everett, Washington: Calibration and repair services for baths and industrial calibrators
American Fork, Utah: Digital thermometer readouts, reference probes, and fixed-point calibrations

Key features include:

Accreditation: NVLAP accredited to ISO/IEC 17025 and recognized internationally through ILAC
Calibration Capabilities:
Standard Platinum Resistance Thermometers (SPRTs) with low measurement uncertainties
Precision calibration of PRTs, RTDs, thermistors, and noble-metal thermocouples
Fixed-point cell calibrations and system calibrations with as-found/as-left data
Documentation: Calibration reports provide raw data, uncertainty analyses, and compliance assessments
Customer Support: Phone and email contact offered for inquiries and service coordination

Fluke Calibration’s expertise addresses precision temperature measurement needs in critical industrial applications.

Vaisala — Specialized Temperature Calibration with On-Site Options

Vaisala offers temperature calibration services tailored for regulated and controlled environments including incubators, freezers, and test chambers. Notable points include:

Both standard and ISO/IEC 17025 accredited calibration options
Calibration types encompassing fixed-point and comparison methods over partial or full measurement ranges
Combined measurements for relative humidity, dew point, and other environmental factors may be available
Four global service centers and flexible on-site calibration services designed to accommodate client requirements
MyVaisala portal for service ordering, tracking, and document management

While specific US locations are less prominently detailed, the availability of on-site services can reduce operational interruptions.

Overview of Calibration Procedures

Typical steps involved in calibration services include:

Device Inspection: Physical and operational condition checks
Controlled Measurements: Calibration performed against traceable standards such as fixed-point cells (temperature) or pressure-based humidity generators
Data Recording: Documenting as-found measurements and relevant environmental conditions
Adjustment (as Applicable): Calibration adjustments and re-measurements performed to achieve accuracy targets
Measurement Uncertainty Calculation: Determined following accreditation requirements and best practices
Certification: Issuance of certificates containing test results, uncertainty, and conformity evaluation

For systems including probes and readouts, component-level and system-level calibrations may be conducted to ensure complete traceability.

Calibration Pricing and Scheduling Information

Pricing depends on device type, calibration scope (e.g., single or multiple calibration points), and turnaround preferences
ThermoWorks provides published pricing details; Fluke Calibration and Vaisala typically supply quotes based on client requirements
Scheduling options vary, with some providers offering expedited services when necessary
Typical turnaround ranges from a few days to several weeks depending on workload and calibration complexity

Guidance for Selecting a Calibration Service

When choosing a calibration provider, consider:

Accreditation Status: Recognition by accredited bodies such as A2LA, NVLAP, or UKAS demonstrates compliance with industry standards
Calibration Range and Methods: Confirm the provider supports your instrument type and required measurement ranges
Documentation Quality: Detailed certificates containing raw data, uncertainty evaluations, and conformity assessments support compliance needs
Turnaround and Support: Responsive communication and timely calibration services help maintain operations
On-Site Calibration Availability: Preferred if equipment movement is limited or requires minimal disruption

Summary

In 2025, multiple accredited calibration laboratories in the US offer services for temperature and humidity loggers and meters. Providers such as ThermoWorks and Fluke Calibration offer a range of services with detailed calibration procedures and documentation. Vaisala provides additional options including on-site calibrations designed for specific regulated environments. Selecting a calibration provider aligned with your measurement and compliance needs can support accurate data and traceability for monitoring systems.

Sources

Disclaimer: All content, including text, graphics, images and information, contained on or available through this web site is for general information purposes only. The information and materials contained in these pages and the terms, conditions and descriptions that appear, are subject to change without notice.

Lifestyle