Dantec ComfortSense Thermal Comfort Analyzer

Overview

The Dantec ComfortSense Thermal Comfort Analyzer is a precision-engineered instrumentation system designed for objective, standardized assessment of human thermal comfort in built environments. It operates on the fundamental principles of environmental physiology and heat transfer modeling, integrating real-time measurement of air temperature, radiant temperature (via black-globe thermometry), relative humidity, and local air velocity—key parameters required by international thermal comfort standards. Unlike generic environmental loggers, ComfortSense implements a validated sensor fusion architecture that enables simultaneous acquisition and synchronized post-processing according to ISO 7730 (analytical determination of PMV/PPD), EN 13182 (air velocity measurement for comfort), ISO 7726 (instrumentation classification for thermal environments), ASHRAE Standard 55 (thermal environmental conditions for human occupancy), and ASHRAE Standard 113 (test methods for determining thermal comfort). Its modular host unit serves as both a high-fidelity data acquisition node and a standards-compliant computational engine, delivering traceable, audit-ready outputs aligned with GLP and GMP-aligned validation frameworks.

Key Features

• Modular host unit with up to 16 analog input channels for simultaneous probe connectivity
• Omni-directional, low-inertia air velocity and temperature probes compliant with ISO 7726 Class II specifications
• Integrated 16-bit A/D converter with USB 2.0 interface for direct PC connection and real-time streaming
• Scalable system architecture supporting up to six synchronized hosts—enabling concurrent monitoring of up to 96 spatially distributed measurement points
• Probe library-driven configuration: pre-calibrated sensor profiles stored in software ensure correct scaling, linearization, and uncertainty propagation per probe type
• Ruggedized probe housings and industrial-grade cabling rated for continuous operation in large-scale climatic chambers and field test environments
• Standards-embedded calculation engine: automatic derivation of PMV, PPD, DR (Draft Risk), SET* (Standard Effective Temperature), and local discomfort indices per user-defined time intervals

Sample Compatibility & Compliance

ComfortSense is engineered exclusively for non-invasive, in-situ environmental monitoring in occupied spaces—including offices, classrooms, hospitals, transportation cabins, and HVAC validation chambers. Probes are compatible with standard mounting hardware (e.g., tripod adapters, wall brackets, ceiling suspension kits) and support both fixed-point and mobile grid-based deployments. The system meets the metrological requirements of ISO/IEC 17025 for measurement traceability when used with NIST-traceable calibration certificates. All firmware and software modules comply with FDA 21 CFR Part 11 for electronic records and signatures, including full audit trail logging, user access control, and electronic signature workflows—making it suitable for regulated thermal validation studies under GxP environments.

Software & Data Management

The ComfortSense Control & Analysis Suite provides a Windows-based interface for configuration, acquisition, visualization, and reporting. Users define measurement grids via drag-and-drop mapping or coordinate import (CSV/XLSX), assign probe types from an embedded library (including T-type thermocouples, PT100 RTDs, and triaxial hot-wire anemometers), and schedule sampling intervals from 1 second to 60 minutes. Raw data is stored in HDF5 format with embedded metadata (timestamp, probe ID, calibration date, operator ID). Statistical processing includes mean, SD, min/max, percentiles, and moving-window trend analysis. Export options include PDF compliance reports (with embedded standard-specific pass/fail flags), CSV for third-party statistical packages, and XML for integration into BMS or digital twin platforms. All software updates undergo version-controlled release validation per IEC 62304.

Applications

• Validation and commissioning of HVAC systems per ASHRAE Guideline 0 and ISO 16814
• Thermal comfort audits for LEED v4.1 IEQ Credit and WELL Building Standard W09
• Occupant-centric building performance simulation calibration (e.g., EnergyPlus, IDA ICE)
• Research on adaptive thermal comfort models in naturally ventilated buildings
• Regulatory compliance testing for healthcare facilities under HTM 03-01 and EU Directive 2003/10/EC
• Field studies evaluating personal comfort systems (desk fans, radiant panels, underfloor heating)

FAQ

Does ComfortSense support wireless probe connectivity?
No—ComfortSense relies on shielded, twisted-pair analog cabling to maintain signal integrity and electromagnetic compatibility in electrically noisy environments such as laboratories and mechanical rooms. Wireless transmission is intentionally excluded to ensure measurement stability and regulatory compliance.
Can the system calculate radiant temperature without a separate globe thermometer?
Yes—when configured with the optional 150-mm black-globe probe (compliant with ISO 7726 Annex C), the system derives mean radiant temperature (MRT) using the globe temperature, air temperature, and air velocity inputs per the McLean equation integrated into the firmware.
Is calibration documentation provided with each probe shipment?
Yes—each probe is supplied with a manufacturer-issued calibration certificate traceable to DKD/DAkkS-accredited laboratories, listing uncertainty budgets at defined reference points (e.g., 20 °C, 0.2 m/s) per ISO/IEC 17025 requirements.
How does ComfortSense handle data synchronization across multiple hosts?
All hosts are synchronized via USB-connected master clock referencing, achieving sub-100 ms temporal alignment across distributed nodes—sufficient for cross-sectional airflow mapping and transient thermal gradient analysis.
Is the software validated for use in FDA-regulated environments?
Yes—the ComfortSense Control & Analysis Suite is delivered as a validated software package (IQ/OQ documented), with 21 CFR Part 11 functionality enabled by default, including role-based permissions, electronic signatures, and immutable audit logs.