- EQUILAM NA Cyclic Corrosion Test (C.C.T) Chambers are constructed both internally and externally from non-metallic composite material (US PATENT 10371623). Therefore, there are no metallic parts inside the chamber, ensuring that no galvanic corrosion occurs and that test results remain free from distortion.
The programmable touchscreen control panel of the EQUILAM NA Cyclic Corrosion Test (C.C.T) series allows programming alternating cycles with multiple modes, including ramps and plateaus that closely simulate real-world weathering conditions.
Salt Spray (Salt Fog) Mode:
Test specimens are placed inside the test chamber following established technical standards or company-specific protocols. They are exposed to controlled fog containing corrosive agents (acidic/saline) in a high-humidity environment, using solutions specified by industry standards.
Prohesion Mode (optional):
Test specimens are placed inside the test chamber and exposed to an atomized solution at ambient temperature. In this mode, compressed air does not pass through the saturator.
Stress (Spray) Mode – Oscillating or Fixed:
This optional mode is also available in a fixed configuration or as a suspended oscillating system (mounted at the top of the chamber).
Immersion Mode (optional):
The solution is pumped into the test chamber, immersing the test specimens. This solution can be either heated or maintained at ambient temperature.
Dry Off Mode:
Hot dry air is injected into the test chamber to dry the specimens.
Condensed Humidity Mode:
Warm saturated humidity is condensed onto the specimens (ISO 6270-2 – CH – ASTM D2247).
Water Fog Mode – ASTM D1735 (Optional):
Test specimens are placed inside the test chamber following established technical standards or company-specific protocols. They are exposed to a fog generated with deionized water, and the test chamber is maintained at a high humidity level.
CTH Mode (optional):
With temperature vs. relative humidity control within the green zone of the graph below.
To reach the blue zone of the graph, the laboratory where the cyclic corrosion test (CCT) chamber is installed must maintain an ambient temperature ≤ 69.8°F (21°C) and relative humidity ≤ 50%.
Otherwise, a cooling and relative humidity control system (ECAX) is required.
Care Must Be Taken to Avoid Cross Chemical Contamination to Prevent Distortion of Test Results:
When a neutral salt spray corrosion chamber has previously been used for an acid test—AASS / CASS—or with any other solution (chemical product – corrosive agent) not specified by standards such as ASTM B117, NSS–ISO 9227, or NSS–JIS Z2371, or if it has been used for any purpose other than neutral salt spray testing, the chamber becomes chemically contaminated. The reverse scenario also results in contamination.
Therefore, a neutral salt spray chamber must undergo a complete cleaning procedure until the pH level complies with technical standard guidelines. The corrosivity of the chamber must also be verified to ensure it does not significantly affect the results of subsequent tests.
It is essential to note that this cleaning process is challenging, and achieving full decontamination is nearly impossible. (ISO 9227)
- Lid at a 100-Degree Angle:
Made of high-strength plastic resistant to scratching by salt crystals.
(Acrylic can be scratched by salt crystals, which may lead to dripping onto the samples — an undesirable condition.)
If the user requires sample visibility, it’s important to note that during the test, direct observation is not possible.
Our solution is to include side windows in the lid, thus avoiding any dripping onto the specimens.
- A minimum test chamber volume of 1000 liters is recommended (excluding the volume of the lid). Smaller chamber volumes can lead to turbulence, which may distort the final test results.
- Electrical panel with UL label, protected against water splashes and dust.
- Bubble Tower (Air Saturator Tower or Humidifying Tower) made of stainless steel, automatic.
- All electrical components have a UL label.
- Emergency stop switch provides immediate shutdown to prevent accidents.
- Lockable switch that allows shutdowns for preventive or corrective maintenance.
- Safety relay that interrupts electrical circuits whenever faults or accident risks are detected.
- Lid opening/closing sensor: When the lid is opened to inspect the samples during the test, spraying and heating of the chamber and saturator are automatically disabled, saving energy and increasing user safety.
- Panel with industrial-grade colored LED indicators, providing visual and audible signals to indicate the status of the machine and its respective processes.
- Solution tank levels, deionized water in the saturator tower, and water jacket levels are located on the front side and are easy for the operator to view, in addition to having electronic safety level controls.
Optional Accessories:
- pH meter for measuring the pH of the solution to be atomized and of the fog collected during the test.
- Conductivity meter for measuring the conductivity of deionized water (ASTM D1193 Type IV).
- Densimeter for measuring the concentration of NaCl in the prepared solution.
- High-purity salt (NaCl) in accordance with ASTM B117.
- Data acquisition – Supervisory system.
- Hermetic DEI with a green LED indicating water compliant with ASTM D1193 Type IV, and a red LED for water outside ASTM D1193 Type IV specifications.
- Screw mounting support.
- Grid-type support for placing test specimens.
- Access port for cable pass-through.
- Field Evolution Certificate.
- CSA Certificate (Canada).
- Prohesion Mode. Immersion Mode.
- Stress or Spray Mode (oscillating or fixed).
- CTH Mode.
- Ultra Low Temperature Mode
- Low Temperature Mode
- Inclined rack for screws
- Inclined rack for coupons. The number of coupons per rack depends on the inclination (15° to 30°) and the height of the coupons, as the spacing between them must comply with the rule of preventing corrosion product dripping from one coupon onto another.
- Other optional items available upon request – please contact us at sales@equilamna.com or by phone.
