RT-311 Salt Spray Corrosion Testing Chamber
The Best Small Salt Spray Test Chamber (RT-311)
1. Spray method: A: continuous spray B: programmable spray.
2. Adopt a full detection system, which can be lighted when a fault occurs.
3. The whole set is made of imported PVC board. The structure is strong and never deformed, and it is resistant to acid, alkali, high temperature, and aging.
4. Adopt an automatic/manual water-add system. With this system, when the water level is insufficient, the test will not be interrupted, and the water level will be alarmed.
5. Quartz glass nozzle: the mist diffuses evenly and falls naturally on the test piece without blocking by crystalline salt.
6. The controllers are all on the same board, easy to operate, and clear at a glance.
7. With double over-temperature protection, warning of insufficient water level to ensure safe use.
8. The imported temperature controller has manual and fully automatic control methods. It uses a digital display and PID control, and the error ± 0.1 ℃. The maximum setting time can reach 999HrS.
9. The laboratory adopts the direct steam heating method; the heating speed is fast and uniform, and the standby time is shortened.
10. The spray tower is equipped with a conical diffuser, which guides the mist, adjusts the amount of mist, and evenly falls the mist.
11. The pressure barrel adopts Henry’s law to heat and humidify.
12. The upper cover of the test tank is automatically opened and closed by a pneumatic cylinder, which is easy to operate and has good safety.
13. After the test is completed, it has an automatic defogging device that allows one to clearly observe the test products in the test room.
Product Details：
Equipment Summary:
Salt spray testing chamber used to test the corrosive resistance of products whose surface was treated with paint, electroplating, inorganic and organic film, anode handling, anti-rust oil, etc.
Corresponding standard :
1.GB/T 2423.17-1993 salt spray test
2.ISO 9227 Corrosion tests in artificial atmospheres-Salt spray tests
3.GB/T 10125-1997 salt spray test
4.ASTM.B117-97 salt spray test
5.JIS H8502 salt spray test
6.IEC68-2-11 salt spray test
7.IEC68-2-52 1996 salt spray test
8.GB.10587-89 salt spray test
9.CNS.4158 salt spray test
10.CNS.4159 CASS Accelerated acetic acid copper salt spray test
11..GB/T 12967.3-91 CASS Accelerated acetic acid copper salt spray test
Technical Parameters:
| Model | RT-311A | RT-311B | RT-311C |
| Inside box size(cm) | 60x45x40 | 90x60x50 | 120x80x50 |
| Outside box size(cm) | 107x60x118 | 141x88x128 | 190x110x140 |
| Testing room temperature | Salt test (NSS ACSS)35℃±1℃/ Corrosion Test (CASS)50℃±1℃ | ||
| Pressure barrel temperature | Salt test (NSS ACSS)47℃±1℃/ Corrosion Test (CASS)63℃±1℃ | ||
| Brine temperature | 35℃±1℃ 50℃±1℃ | ||
| Testing room Capacity | 108L | 270L | 480L |
| Brine tank capacity | 15L | 25L | 40L |
| Salt concentration | The concentration of sodium chloride 5% or the 5% concentration of sodium chloride add 0.26g per liter of copper chloride (CuCl2 2H2O) | ||
| Air pressure | 1.00±0.01kgf/cm2 | ||
| Spray volume | 1.0~2.0ml/80cm2/h (working at least 16 hours, and then take the average) | ||
| Testing room relative humidity | 85% above | ||
| PH | 6.5~7.2 3.0~3.2 | ||
| Spray form | Programmable spray (Including continuous and intermittent spray) | ||
| Power | AC220V1Φ10A | AC220V1Φ15A | AC220V1Φ20A |
Essential Preparations Before Operating the Chamber
Before starting the test, specific preparations are necessary to ensure consistent and reliable test results:
1. Review Testing Standards
Familiarize yourself with international standards, such as ASTM B117, ISO 9227, and JIS Z 2371, to align your test procedures with global best practices.
2. Inspect the Equipment
Check the internal chamber, spray nozzles, salt solution tank, and air pressure system for any blockages, damage, or contamination.
3. Prepare the Test Samples
Clean the test samples thoroughly and mount them on the sample holders without overlap to ensure uniform exposure.
4. Solution Preparation
Accurate Preparation of a salt solution is key to obtaining reliable results. For a detailed method, refer to Step-by-Step Instructions for Preparing Salt Spray Chamber Solutions.
Operating the Salt Spray Chamber – Step-by-Step Process
Step 1: Power On and Set Parameters
Switch on the Salt Spray Chamber. Set the test duration, temperature (typically 35°C for neutral salt spray tests), air pressure, and fog collection rate according to standard requirements.
Step 2: Load the Salt Solution
Fill the tank with the prepared salt solution (usually 5% NaCl solution). Ensure the solution is free from impurities and properly filtered.
Step 3: Start Air Saturation
Activate the air saturator to heat and humidify the air before it enters the chamber. This ensures that the air is fully saturated for consistent fogging.
Step 4: Place the Test Samples
Carefully load the cleaned and mounted samples into the chamber. Ensure proper spacing for uniform exposure to the salt fog.
Step 5: Initiate the Test Cycle
Close the chamber lid securely and start the test. Monitor the fog density and temperature using the digital display on Pacorr’s Salt Spray Chamber.
Step 6: Test Monitoring and Mid-Test Checks
Although the test is automated chiefly, periodically check for:
Stable chamber temperature
Uninterrupted fog production
Nozzle blockages
Salt solution level
Step 7: Test Completion and Sample Removal
Once the cycle is complete, turn off the chamber. Open the lid carefully, wearing safety gear. Remove the test samples gently to avoid surface damage.
Post-Test Analysis and Reporting
After the test, the samples are evaluated visually or with measurement tools to assess:
Rust formation
Blistering
Peeling or cracking of coatings
Document all observations, along with photographs, and compare the results with specification standards.
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