Hygrometer, Whirling

Product Code : SCL-PLE-11601

The whirling hygrometer, also known as a sling psychrometer, is a manual meteorological instrument used to determine relative humidity and dew point. By rotating dual dry and wet bulb thermometers at high velocity, it facilitates rapid evaporative cooling for precise measurement. Designed for secondary and tertiary education, it serves STEM and geography curricula, providing empirical data for studying atmospheric moisture.

Technical Specifications

Educational Benefits & Features

Feature: Integrated swivel handle and rotating axis.

Benefit: Ensures consistent airflow over the wet bulb, eliminating the risk of localized saturation and providing significantly more accurate humidity readings than stationary psychrometers.

Feature: Dual-thermometer differential configuration.

Benefit: Directly illustrates the principle of the latent heat of vaporization, helping students bridge the gap between abstract thermodynamic theory and observable meteorological phenomena.

Feature: Mercury-free spirit filling.

Benefit: Adheres to modern safety standards for secondary education and vocational training, removing the risk of hazardous chemical exposure in the event of accidental glass breakage.

Feature: High-impact protective carrying case.

Benefit: Safeguards the precision glass capillaries during outdoor field excursions and transit, ensuring long-term equipment durability for institutional use.

Feature: Manual slide rule calculation interface.

Benefit: Promotes mathematical literacy and data processing skills by requiring students to manually derive relative humidity percentages from raw temperature data points.

Curriculum Alignment

This instrument is precision-engineered to meet the rigorous infrastructure requirements of Next Generation Science Standards (NGSS) for Earth’s Systems and Technical and Vocational Education and Training (TVET) benchmarks for environmental monitoring. It supports laboratory modules focusing on the water cycle, atmospheric dynamics, and thermodynamics, providing the empirical foundation required for advanced meteorological investigations.

Why Choose Educational Instrument?

Procuring meteorological instrumentation directly from a specialized manufacturer ensures the technical consistency and material traceability required for institutional procurement.

Direct Manufacturer (OEM) Expertise: We operate proprietary Research and Development (R&D) and glass-annealing facilities, ensuring every thermometer is aged and calibrated to prevent scale drift over time.

Factory-Direct Pricing: By bypassing third-party distributors, we provide high-authority scientific equipment at a cost-efficient price point, maximizing the impact of departmental budgets.

International Quality Compliance: Our manufacturing processes are strictly audited to ISO 9001 and CE standards, ensuring that educational and industrial institutions receive equipment that meets global laboratory safety directives.

Supply Chain Reliability for Bulk Tenders: We are optimized for high-volume fulfillment, offering consistent technical specifications and dependable lead times for regional education boards and large-scale institutional tenders.