A constant climate chamber for pharmaceutical stability testing, cosmetics, food, electronics, and packaging materials, available in three capacities — 256 L, 506 L, and 756 L — with precise temperature and humidity control, real-environment simulation, and energy consumption of just 5 kWh/day. The series combines high-efficiency semiconductor technology, intelligent PTC heating, water preheating, and atomized humidification to deliver stable operation with low noise and reduced water use.

Control is based on a PID principle with a 10-inch touchscreen, 0.1°C temperature precision, and 0.1% humidity precision, operating across 5°C to 70°C and 10% to 90% RH. Temperature uniformity across 27 test points is ±0.5°C, while humidity fluctuation is ±1% or ±2% RH, depending on the reference condition cited in the sources. Recovery time after a 30-second door opening is less than 4 minutes to return to 40°C and less than 14 minutes to recover humidity to 75%.

Humidity generation uses an intelligent PTC system with water preheating and atomization, reducing daily water consumption to 120 mL to 320 mL without the need for wastewater recycling. The system is low-noise, low-vibration, and contaminant-free, which supports continuous use in testing labs and quality control environments. The inner chamber is stainless steel, with two standard doors and shelves rated up to 20 kg per level, with configurations of up to 5 shelves on the HHS-256 and up to 10 or 31 shelves on the larger models, depending on the version cited in the sources.

The unit includes data logging, USB and RS485 interfaces, and remote monitoring support in some versions mentioned in the sources. The control architecture was developed to accurately simulate real environmental conditions, making the chamber useful for stability studies, accelerated aging, and shelf-life testing. The specifications also indicate access ports and optional security control on certain catalog versions.

Key Features

• Energy consumption of just 5 kWh/day.

• Semiconductor technology with up to 90% energy savings versus compressor-based units.

• Temperature range from 5°C to 70°C.

• Humidity range from 10% to 90% RH.

• Temperature control precision of 0.1°C.

• Humidity control precision of 0.1%.

• Temperature uniformity of ±0.5°C across 27 test points.

• Thermal recovery in under 4 minutes after a 30-second door opening.

• Humidity recovery in under 14 minutes after a 30-second door opening.

• Water consumption between 120 mL and 320 mL per day.

• Stainless-steel inner chamber.

• 10-inch touchscreen PID control system.

• USB and RS485 interfaces for data and connectivity.

• Designed for stability, shelf-life, and aging testing.

Applications

The HHS-256 / HHS-506 / HHS-756 series is designed for pharmaceutical, cosmetics, food and beverage, electronics, and packaging materials laboratories performing stability testing, accelerated aging, and environmental simulation under controlled conditions. It also serves R&D centers that require temperature and humidity reproducibility for shelf-life studies and material qualification.

With 256 L, 506 L, and 756 L chamber sizes, the line covers everything from small lab test routines to higher-volume operations with multiple shelves. Shelf load ratings, fast recovery, and low water consumption make the equipment especially suitable for environments that value continuous stability, operating efficiency, and low running cost.