Drick DRK500P Mechanical Hygrometer & Dry/Wet-Bulb Thermometer Calibration Chamber
| Brand | Drick |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | Domestic (China) |
| Model | DRK500P |
| Temperature Range | −5 °C to +65 °C |
| Temperature Stability | ≤0.09 °C per 30 min |
| External Dimensions | 880 mm × 1020 mm × 1740 mm |
| Internal Chamber Dimensions | 500 mm × 500 mm × 600 mm |
| Temperature Resolution | 0.01 °C |
| Temperature Uniformity | <0.3 °C |
Overview
The Drick DRK500P Mechanical Hygrometer & Dry/Wet-Bulb Thermometer Calibration Chamber is a precision-controlled environmental chamber engineered specifically for the metrological verification and periodic calibration of mechanical hygrometers, psychrometers, and dry/wet-bulb thermometers used in laboratory, industrial quality control, and regulatory compliance settings. Unlike general-purpose environmental chambers, the DRK500P integrates dual-sensor temperature stabilization architecture with optimized air circulation dynamics to maintain highly uniform and stable thermal conditions across its calibrated working volume—critical for traceable humidity and temperature verification where instrument response must be evaluated under reproducible ambient states. The chamber operates on a closed-loop PID-controlled heating/cooling system with high-resolution platinum resistance thermometers (Pt100) as primary reference sensors, enabling stable setpoint maintenance within ±0.09 °C over 30-minute intervals and spatial uniformity better than ±0.3 °C throughout the 500 L internal cavity.
Key Features
- Precision temperature control from −5 °C to +65 °C with 0.01 °C digital resolution and real-time display on front-panel interface
- Dual-zone thermal management system ensuring minimal thermal gradient and enhanced stability during extended calibration cycles
- Stainless-steel inner chamber (500 × 500 × 600 mm) with seamless welding and corrosion-resistant finish for long-term reliability and contamination control
- Low-noise axial fan assembly with laminar airflow design to minimize turbulence-induced measurement uncertainty during psychrometric evaluation
- Integrated reference sensor port for optional external traceable thermometer insertion (e.g., NIST-traceable Pt100 or thermistor probes)
- Front-access door with magnetic seal and double-layer insulated glass viewport for visual monitoring without thermal disturbance
Sample Compatibility & Compliance
The DRK500P is validated for use with mechanical hygrometers (hair-type, metal-strip), analog dry/wet-bulb psychrometers, bimetallic thermometers, and other passive ambient sensing instruments requiring static or quasi-static environmental exposure. Its chamber geometry and airflow profile comply with ISO 554:1976 (Standard atmospheres for conditioning and testing), ASTM E2207–22 (Standard Practice for Calibration of Thermometers Used in Hygrometry), and JJG 205–2005 (Chinese National Verification Regulation for Mechanical Hygrometers). The unit supports GLP-compliant calibration workflows when paired with documented procedures and external certified reference standards; full audit trails require integration with compliant laboratory information management systems (LIMS).
Software & Data Management
While the DRK500P operates via standalone microprocessor-based controller with local data logging (up to 10,000 timestamped records), it includes RS-232 and optional RS-485 communication interfaces for integration into centralized calibration management platforms. Exported CSV-formatted logs contain setpoint, actual chamber temperature, elapsed time, and operator ID fields—enabling alignment with FDA 21 CFR Part 11 requirements when deployed with validated third-party software supporting electronic signatures and audit trail generation. Firmware updates are delivered via USB port and support version-controlled firmware revision tracking.
Applications
- Periodic verification of mechanical hygrometers in metrology labs and national calibration institutes
- Factory acceptance testing (FAT) of psychrometric instruments prior to deployment in HVAC, pharmaceutical cleanrooms, and archival storage facilities
- Supporting ISO/IEC 17025-accredited calibration laboratories in establishing measurement uncertainty budgets for relative humidity and dry-bulb temperature
- Validation of environmental monitoring systems (EMS) in GMP-regulated manufacturing environments (e.g., sterile drug production, medical device packaging)
- Educational use in university physics and metrology laboratories for hands-on study of psychrometric relationships and thermal equilibrium principles
FAQ
What reference standards are recommended for verifying the DRK500P’s temperature performance?
NIST-traceable Pt100 probes with calibration certificate (uncertainty ≤0.02 °C at 20 °C) are recommended for independent validation.
Can the chamber be used for humidity calibration?
No—the DRK500P is designed exclusively for temperature calibration of dry/wet-bulb thermometers and mechanical hygrometers; it does not generate or control relative humidity.
Is the internal chamber volume sufficient for multi-instrument calibration?
Yes—the 500 × 500 × 600 mm cavity accommodates up to six standard-size mechanical hygrometers or four full-size psychrometers simultaneously while maintaining specified uniformity.
Does the unit meet CE or UKCA marking requirements?
The DRK500P complies with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions); CE marking is available upon request with EU Representative documentation.
What is the typical warm-up time to reach thermal equilibrium at 40 °C?
Approximately 45 minutes from ambient (23 °C), verified by internal reference sensor stabilization across all nine defined test points per ISO 554.
