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Fabricante de câmaras de teste ambiental há 20 anosMais de 3000 entregas a clientes em todo o mundo           Email: shirley@deruitest.com
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Câmara de Névoa Salina Cíclica do Tipo 200

The DERUI DR-H304-200 is a large 1200 L salt spray chamber with a 2000 mm-wide workspace, programmable continuous or periodic spraying, and operating settings for NSS/AASS and CASS corrosion tests.

Modelo DR-H304-200
Internal Size 2000 × 1000 × 600 mm (approximately 1200 L)
Spray Modes Continuous and periodic salt spray
Métodos de Teste NSS, AASS and CASS; full CCT modules must be confirmed
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Large-Capacity Corrosion Testing

DR-H304-200 1200 L Programmable Salt Spray Chamber

A wide 2000 mm test workspace for continuous or periodic salt-fog exposure of large panels, coated assemblies, fasteners and production batches. The DR-H304-200 supports NSS/AASS and CASS operating conditions when configured and operated according to the applicable test method.

Model DR-H304-200
2000 × 1000 × 600 mm workspace
Approx. 1200 L
Continuous / periodic spray

Designed for Large Specimens and Batch Corrosion Tests

The “200-Type” identifies the 2000 mm internal width—not a 200 L benchtop unit. Its broad test space accommodates long coating panels, multiple racks of components and larger fabricated parts while preserving clearance for fog circulation and collection.

1

Large Working Area

A 2000 × 1000 × 600 mm chamber provides room for production batches and long specimens that do not fit conventional 90- or 160-type cabinets.

2

Programmable Spray Timing

Run continuous fog or timed spray/stop periods according to the selected laboratory procedure and product specification.

3

NSS, AASS and CASS Conditions

Published temperature and pH settings support neutral, acetic-acid and copper-accelerated acetic-acid salt-spray methods when the required solution and configuration are used.

Cyclic terminology: periodic spray/stop control is not automatically the same as a full cyclic corrosion test (CCT). A sequence such as salt fog, controlled humidity, dry-off and ambient dwell requires dedicated humidity, air-drying and transition hardware. Confirm those modules before claiming compliance with an automotive CCT specification.

DR-H304-200 Technical Specifications

Modelo DR-H304-200
Internal size (W × D × H) 2000 × 1000 × 600 mm
External size (W × D × H) 2700 × 1250 × 1500 mm
Nominal test volume Approximately 1200 L
Material da câmara 8 mm rigid PVC plate
Sample support 10 mm glass-fiber rods with corrosion-resistant V supports; intended specimen inclination 15°–30° where required by the procedure
Chamber temperature range Ambient to +55°C
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Test Preparation and Verification Workflow

1

Define the Method

Confirm the standard edition, solution chemistry, pH, exposure mode, duration, specimen orientation and acceptance criteria.

2

Condition the Cabinet

Prepare the prescribed water and salt solution, stabilize temperatures and verify fog collection before loading qualification specimens.

3

Control the Exposure

Record temperature, collection rate, pH, interruptions and replenishment events without unnecessary lid opening.

Specimen Loading

  • Use corrosion-resistant supports
  • Maintain the specified orientation
  • Prevent specimens from shielding one another
  • Prevent condensate from dripping between samples
  • Leave space for uniform fog circulation

Routine Checks

  • Fog collection and distribution
  • Chamber and saturator temperatures
  • Solution concentration and pH
  • Nozzle condition and air quality
  • Tank, seals, drains and alarms

Aplicações Típicas

Automotive Components

Coated brackets, fasteners, housings, trim, chassis parts and other components tested to supplier or OEM specifications.

Coatings and Plating

Powder coating, paint, zinc and nickel systems, anodized surfaces and conversion coatings.

Industrial Assemblies

Hardware, enclosures, electrical components, construction products and marine fittings that require batch exposure.

Information Needed Before Quotation

Test Requirements

  1. Exact standard and edition
  2. NSS, AASS, CASS or full CCT cycle
  3. Solution chemistry and phase sequence
  4. Test duration and reporting needs
  5. Required calibration or cabinet-corrosivity checks

Specimen and Facility

  1. Largest sample dimensions and mass
  2. Quantity per batch and fixture design
  3. Available compressed air quality and capacity
  4. Water quality, drain and exhaust conditions
  5. Voltage, doorway and installation space

Perguntas Frequentes

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Modelo

DR-H304-200

Tamanho interno (L*P*A)

2000*1000*600mm

Tamanho externo (L*P*A)

2700*1250*1500mm

Material do equipamento

Placa de plástico rígido P.V.C, espessura de 8mm

Bandeja de amostras

Varilha de fibra de vidro de diâmetro 10mm, anti-roubo

Plástico de aço em forma de V para garantir que a amostra esteja inclinada entre 15~30 graus

Faixa de Temperatura

Temperatura ambiente ~ 55℃

Flutuações de temperatura

≤±0,5℃

Uniformidade de Temperatura

≤±2℃

Precisão de Temperatura

±1℃

Método de pulverização

Tipo de pulverização contínua e periódica

Temperatura da Câmara de Testes

Método de Teste de Spray de Sal (NSS ACSS) 35±1℃
Método de Teste de Resistência à Corrosão (CASS) 50±1℃

Temperatura do Barril de Ar Saturado

Método de Spray de Sal (NSS ACSS) 47±1℃
Método de Teste de Resistência à Corrosão (CASS) 63±1℃

Temperatura da Salmoura

35℃±1℃

Quantidade de Spray

1,0~2,0 ml / 80cm2 / hr

Valor de pH

Método de Spray de Sal (NSS ACSS) 6,5~7,2
Método de Teste de Resistência à Corrosão (CASS) 3,0~3,2

Volume de Laboratório

1200L

Capacidade do Tanque de Salmoura

40L

Dispositivos de Proteção de Segurança Múltiplos

Proteção contra descarga de corrente, proteção contra sobrepressão, proteção contra sobretemperatura, proteção com fusível contra sobrecarga

Acessórios

Sal de teste / Tanque de medição / Bico de pulverização x 1 conjunto

Fonte de ar

Bomba de ar (fornecida pelo comprador)

Critérios de teste

ASTM B117-08, ISO 9227...

1. Quais são as funções principais da câmara de teste de névoa salina alternada do tipo 200?
Este equipamento pode simular ambientes cíclicos complexos, como corrosão por névoa salina, altas temperaturas e alta humidade, e secagem. É principalmente utilizado para testar a resistência à corrosão de materiais (metais, revestimentos, componentes eletrônicos, etc.) em ambientes adversos, e cumpre normas como ASTM B117 e GB/T 2423.17.

2. Comparado com câmaras de névoa salina tradicionais, quais são as vantagens do modelo "Alternado" do tipo 200?
Equipamentos tradicionais suportam apenas testes contínuos de névoa salina, enquanto o modelo 200 suporta testes cíclicos programados (como: névoa salina → calor úmido → secar → descansar), que são mais próximos das mudanças ambientais reais, aceleram o processo de corrosão e melhoram a precisão do teste.

3. Como o equipamento controla a taxa de deposição de névoa salina?
Por meio de um sistema de ar comprimido preciso e tecnologia de atomização por bocal, combinado com monitorização em tempo real por sensores, garantindo que a taxa de deposição seja estável entre 1 a 2 ml/80 cm²·h (dentro do intervalo de requisitos padrão), com um erro de ≤ ±0,1 ml.

4. Quantos passos podem ser definidos no ciclo alternado no máximo?
O modelo 200 suporta programação em múltiplos estágios, com um máximo de 99 passos de ciclo que podem ser configurados. Cada passo pode definir independentemente a temperatura, humidade e tempo de spray/paragem de spray, atendendo a requisitos de testes complexos.

5. Os amostras podem ser adicionadas durante o teste?
De modo algum! Abrir a porta causará mudanças súbitas na temperatura e humidade, bem como o transbordamento de névoa salina, o que afetará os resultados do teste e a vida útil do equipamento. As operações devem ser realizadas apenas após o teste estar completamente parado e a pressão dentro da câmara ter sido liberada.

6. Existem requisitos especiais para a proporção da solução salina?
Deve-se usar uma solução de NaCl a 5±1% (conforme padrão ASTM D1193 de água pura), com um valor de pH entre 6,5 e 7,2. Recomenda-se usar cloreto de sódio de grau analítico para evitar impurezas que possam interferir nos resultados.

7. Como limpar os resíduos de sal na caixa?
Manutenção diária: Após cada teste, limpe as paredes internas e a prateleira de amostras com água limpa.
Limpeza profunda: Mergulhe a bocal e o tubo em uma solução de ácido acético 5% por uma hora todos os meses, depois enxague com água pura.

8、Que problemas podem ser causados por uma má aterragem do equipamento?
Pode levar a interferências estáticas com sinais de sensores, alarmes falsos e até danos às placas de circuito. Deve-se usar um fio de aterragem independente com uma resistência de ≤ 4Ω, e a resistência de aterragem deve ser verificada regularmente.

9、Como verificar se o equipamento está em conformidade com a norma nacional?
É necessário realizar calibração sem carga.
Deposição de névoa salina: Recolha durante 16 horas usando um funil com uma área de 80 cm² e calcule o valor médio.
Uniformidade de temperatura: método de medição de temperatura em 9 pontos, flutuação ≤ ±1,5℃.

 

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