Hongzhan step-in constant temperature and humidity laboratory is stationed in China Institute of Metrology!

Hongzhan's walk-in laboratory is located at the China Institute of Metrology – a step-in constant temperature and humidity testing facility designed for large-scale industrial applications.

1. **Purpose**: This advanced laboratory is widely used in defense, aerospace, automotive, electronics, plastics, chemicals, and pharmaceutical industries for heat resistance and cold resistance testing. It provides a controlled environment for testing large components, semi-finished products, and finished goods, making it ideal for high-volume and large-sized test samples.

2. **Chamber Structure**: The chamber base is constructed using 8# channel steel to form a reinforced frame, ensuring stability under heavy loads (up to 200 kg/m²). The lab consists of six separate chambers and a double-door system measuring 1800×2000 mm. The inner walls are made of high-quality stainless steel (SUS#304) to prevent rusting during long-term humidity operations, while the outer casing uses domestic brand color steel plates. Insulation is provided by polyurethane rigid foam, offering excellent thermal performance and impact resistance. The door is also made of color steel plate with an internal and external handle for easy access.

3. **Control System**: Equipped with a balanced temperature and humidity control method, the system ensures accurate and stable environmental conditions. It supports high-temperature and high-humidity testing with precise regulation. A high-precision, intelligent temperature regulator features a color LCD touch screen, allowing users to set complex programs easily through a user-friendly interface.

4. **Refrigeration & Safety Features**: The refrigeration circuit automatically adjusts based on the set temperature, enabling efficient cooling even under high-temperature conditions. A large observation window allows real-time monitoring of test samples. Multiple safety devices protect the equipment from damage during abnormal operations.

5. **Key Features**: - Large-scale testing capability for industrial parts and products. - Modular design for flexible expansion and customization. - Multi-wing centrifugal air supply system for uniform temperature and humidity distribution. - High-performance imported compressors with eco-friendly refrigerants. - Computer connectivity via RS-232 for program design, data collection, and remote control. - Fault detection and automatic shutdown with troubleshooting guidance. - Timing contact function for dynamic testing and computer monitoring. - Durable materials including stainless steel and color steel plates for long-lasting use.

6. **Control Methods**: The system uses a balanced temperature control system (BTHC) combined with a ceiling fan circulation system, ensuring stable heating and humidification. PID control and SSR technology help maintain consistent environmental conditions over time.

7. **Model HuiQi-TH-40-SP**: - Temperature Range: -55°C to +80°C - Temperature Fluctuation: ±0.5°C - Temperature Uniformity: ±2.0°C - Heating Time: Less than 60 minutes (from -55°C to +80°C) - Cooling Time: Less than 70 minutes (from +20°C to -55°C) - Humidity Range: 20%–98% RH - Humidity Fluctuation: ±2.5% RH - Humidity Uniformity: ±5.0% RH - Internal Dimensions: Customizable - Air Circulation: AC motor-driven multi-blade fans for efficient airflow

**About China Institute of Metrology** Established in 1955, the China Institute of Metrology is a national research institution under the General Administration of Quality Supervision, Inspection, and Quarantine. It serves as the highest measurement science research center and legal metrological organization in China, responsible for establishing and maintaining national measurement standards. Over the years, the institute has contributed significantly to the accuracy and consistency of national measurements. With a focus on innovation and international cooperation, the institute has participated in global metrology comparisons and played a key role in ensuring the traceability of measurement values. It has also been instrumental in supporting China’s economic development and technological advancement. **Guangdong Hongzhan Technology Co., Ltd.** WWW.OVEN.CC

Sanitary Pressure Relief Valves

A Sanitary Pressure Relief Valves is a type of self-acting device, designed for keeping tanks work properly. It can release air out of the tanks to maintain pressue, and also absorb air into tanks to be anti-vacuum. Sanitary Pressure Relief Valves including stainless steel sanitary pressure relief valves, food grade pressure relief valves, hygienic pressure relief valves, vacuum relief valves, air release valves. Kaysen Steel is a china manufaturer and supplier of stainless steel sanitary pressure relief valves, food grade pressure relief valves, hygienic pressure relief valves, vacuum relief valves, air release valves, we supply supperial quality stainless steel sanitary pressure relief valves,vacuum relief valves, air release valves in SS304, SS316, SS316L materials, size from 1/2"-4", DN15-DN100, connection types contains weld, clamp, thread types,etc
Sanitary Pressure Relief Valves Specification:
Material: SS304, SS316 or SS316L
Connection Standard: 3A, DIN, SMS, ISO, IDF
Port size: DN20-DN50, 3/4"-2"
Connection type: weld, clamp, thread
Gasket material: EPDM, FPM.
Pressure: 0.5-2bar, Vacuum:0.3-0.9bar
Temperature range: -10℃ to 120℃(EPDM)

Sanitary Pressure Relief Valves,Food Grade Pressure Relief Valves,Hygienic Pressure Relief Valves

Kaysen Steel Industry Co., Ltd. , https://www.chinasanitaryvalve.com