Product Overview

The GDJS-100L-B is a programmable temperature and humidity chamber designed for environmental simulation and reliability testing of electrical and electronic products, parts, and materials. It supports constant high/low temperature, gradual temperature changes, and damp heat testing.

Application Scope and Restrictions

• Suitable for testing various products under controlled temperature and humidity.
• Not suitable for flammable, explosive, volatile, corrosive, biological samples, or strong electromagnetic emission sources.

Technical Specifications

• Effective volume: 100L
• Inner dimensions: 400mm (W) x 500mm (H) x 500mm (D)
• Outer dimensions: approx. 1000mm x 1450mm x 950mm
• Operating environment: Air-cooled, 5°C to 25°C, ≤85% RH (no load)
• Temperature range: -40°C to +150°C
• Humidity range: 20% to 98% RH (temperature dependent)
• Temperature fluctuation: ±0.5°C; Humidity fluctuation: ±2.5% RH
• Temperature deviation: ≤±2°C; Humidity deviation: ≤+2/-3% RH (>75% RH), ≤±5% RH (<75% RH)
• Temperature uniformity: ≤±2.0°C
• Heating rate: 3°C/min (with load); Cooling rate: 1°C/min (with load)
• Overshoot: ≤2°C
• Maximum load inside chamber: 50kg
• Noise level: ≤70 dB(A)
• Complies with GB/T, IEC, GJB standards

Structure and Materials

• Outer box: Cold rolled steel with electrostatic spray coating
• Inner box: SUS304 stainless steel
• Insulation: Rigid polyurethane foam and ultra-fine eco-friendly glass fiber cotton
• Door: Single left-opening with heated, sweat-proof, triple-layer vacuum observation window (30x40 cm)
• Sealing: Imported silicone sealing strip
• Pressure balance port: 1/2 inch drain sharing type
• Lighting: 9W LED near observation window

Air Supply and Circulation System

• High uniformity air supply with upper outlet and lower return air
• Circulating motor: Taiwan Shangyu low voltage asynchronous motor
• Fan: Multi-blade centrifugal fan with aluminum alloy blades resistant to temperature extremes
• Sensors: PT100 platinum resistance temperature and humidity sensors (wet and dry bulb)

Refrigeration System

• Air-cooled piston reciprocating compressor (French TECUMSEH)
• Refrigerant: Environmentally friendly HFC R404A/R23 (DuPont, USA)
• Condenser: Air-cooled forced convection fin type
• Evaporator: High-efficiency multi-section fin with hydrophilic membrane
• Oil separator: Emerson (Mexico)
• Expansion valve: Danfoss thermal expansion valve (Denmark)
• Electromagnetic valves: Japan Saginomiya and Danfoss
• Sight glass: Danfoss
• Dehumidification: Refrigeration freezing method with multi-stage evaporator and automatic flow control

Heating and Humidifying System

• Heating: Bare wire nickel-chromium alloy electric heating tubes
• Humidification: Boiler method with stainless steel humidification cylinder for fast, accurate control; includes anti-dry burning and explosion-proof protection
• Control: High-precision non-contact SSR solid state relay

Controller and Control Circuit (Vision TH7010)

• 7-inch TFT true color LCD resistive touch screen with USB mouse support
• Supports multiple sensor inputs (PT100, thermocouples types T, K, E)
• High precision sampling (0.1°C)
• Program capacity: 100 groups, 999 segments each, with cycle and step linking
• Operation modes: Fixed value, slope, program operation
• Output: PID + SSR/SCR automatic forward and reverse synchronous output
• Software features: Paperless recording (300 days storage), USB export, timing control (10 modes), fault display (16 alarms), scheduled start, PC control software included
• Main control components: High-quality international brands (e.g., Schneider contactors)

Safety and Protection Features

• Protections for compressor overheating, overcurrent, overpressure
• Condensing fan overheating protection
• Controller AC power lightning protection
• Humidification pipe dry burning prevention and water supply/drainage alarms
• Adjustable over-temperature protection inside chamber
• Temperature fuse and air conditioning channel over-temperature protection
• Centrifugal fan motor overheat protection
• Main power supply protections: phase loss, leakage, overload, short circuit, power-off with fuse-free switch
• Independent over-temperature protection for test products

Additional Components and Accessories

• Two layers of stainless steel sample racks, each supporting 25kg (total ≤100kg)
• Built-in 20L plastic water tank with float switch for humidification water control and alarms
• Optional automatic pure water filtration system
• 50mm diameter soft plug test hole
• User manual, technical data, wiring diagrams, and centralized monitoring software included

Operating Conditions

• Ambient temperature: 5°C to 35°C
• Relative humidity: ≤85% RH
• Atmospheric pressure: 80 kPa to 106 kPa
• No strong vibrations nearby
• Power supply: 380V AC ±10%, 50 Hz ±0.5%, 4 kW nominal, 6 kW max, 20 A max current
• Cable: Five-core copper with protective grounding and 40A leakage switch
• Humidification water resistivity: ≥500 MΩ
• Ambient air free from high dust, flammable/explosive gases, strong electromagnetic radiation
• Prohibited to test/store flammable, explosive, volatile, corrosive gases inside chamber
• Sample placement: Total mass ≤80 kg/m³; volume ≤40% chamber volume; horizontal area per layer ≤40% cross-sectional area to ensure performance

After-Sales Service

• Free operator and maintenance training at company or customer site
• One-year warranty on entire machine
• Professional maintenance team with fast response: 12-hour domestic reply, 24-hour factory troubleshooting

Standards and Compliance

• Designed and manufactured per GB/T10586-2006 and GB/T10592-1989 national standards
• Verification standards: GB/T5170.2-1996 and GB/T5170.5-1996
• Temperature and humidity uniformity standards refer to no-load conditions

Main Materials and Components

Humidification and Dehumidification Components

The humidification and dehumidification system includes key components all sourced from Chinese manufacturers, ensuring supply consistency and durability.

• Humidification and Dehumidification Unit: Huayi Chuanghong, 3KW, 2 units
• Water Cup: Huayi Chuanghong, PVC mold opening, 1 unit
• Water Pipes and Joints: High-quality silica gel (silicone), 1 set
• Humidification Tube: Weide stainless steel built-in type, 1 unit

Materials such as PVC, silicone, and stainless steel are used for durability and suitability in humidification/dehumidification processes. Quantities are clearly specified for inventory and installation planning.