Salt Spray Test Chamber
1. Introduction
Salt spray test chamber is applied to measure the reliability of the EUT against salt-spray corrosion. Salt spray chamber is to simulate the climate near the sea, there are 3 kinds of test according to ISO9227-2017: neutral salt mist (NSS), acidy salt spray test (CASS) and copper-accelerated acetic acid salt spray test (CASS). This equipment can meet the test requirements of ASTM.B117-1997, JIS H8502-1999, IEC60068-2-11, IEC60068-2-52 and etc..
Principle: Absorb the salt water by Bernoulli principle, and the salt water will be atomized by nozzle symmetrically, no block, no crystallize. The heater in the chamber keep the temperature.
2. Parameters
| Inner dimension (test chamber) | 900mm*600mm*500mm (W*D*H) |
| Outer dimension (entire) | 1380mm*800mm*1250mm (W*D*H) |
| Working power | 220V/50Hz, 3KW |
| Weight | Approximate 95KG |
| Working conditions | 10℃~35℃(temp.), ≤85% R.H. |
| Control system | a. LCD touch screen+P.I.D b. Temperature controller: 0-99.9℃, error:±0.3℃, Timer: 0.1s-999H c. Operation language: English |
| Temperature in test chamber | RT＋5℃~50℃ (Neural salt mist test (NSS, ACSS): 35℃±1℃, Acidy salt spray test (CASS): 50℃±1℃) |
| Temperature in air barrel | +40℃～+63℃ (Neutral salt mist test (NSS, ACSS): 47℃±1℃, Acidy salt spray test (CASS): 63℃±1℃) |
| Temperature uniformity | ≤±2℃ |
| Temperature fluctuation | ≤±1℃ |
| Salt solution concentration | 5% sodium chloride solution |
Spray device | a. Atomizer: Made of special glass, will not crystallize after 4000 hours of use, and the spray volume and spray angle can be adjusted b.dispersion tower: Intermediate spray tower, the spray volume of salt solution can be adjusted and falls evenly. c. Test type: NSS, CASS, CASS or user-defined as per relative standards. (enable to spray continuously, intermittently or programmably) |
| Collecting device | Funnel with approximate 80cm2 collecting area and standard measuring cylinder |
| Heating device | a. Heating method: Titanium alloy high-speed heating electric heater b.Temperature sensor: anti-corrosion platinum resistance PT100Ω/MV |
| Defogging method | The mist is discharged by air squeezing, and the box cover has a cone-shaped design with a top angle of 120℃, which is conducive to the fact that the liquid droplets produced by the salt spray do not directly fall on the sample, ensuring the accuracy of the test. |
| Spray volume | 1.0~2.0ml/80cm2/H  |
| Air supply system | Air pressure 1KG/cm2, displayed by pressure gauge |
| Relative humidity | ≥85%, various by temperature |
| PH value | Neutral 6.5~7.2, acid 3.01~3.2 |
| Spray method | Continuous spray / periodic spray |
| Protection device | A. When the water level is low, the controller will automatically cut off the power supply B. When temperature in test chamber or air barrel is 5℃ more than set temperature, the controller will alarm and automatically cut off C. When test complete, automatically shut down the operating system D. When overloaded, the fuse is automatically cut off. |
| Configuration | mist dispersion tower*1, sample rack (V and O sharps), standard measuring barrel*2, temperature and humidity meter*2, collecting device*2, atomizer*1, filter*1, dispersion tower*1 |
| Accessories | 250g Nacl *2, PH test paper*1, measuring barrel (5L)*1 |
| Material of the parts | a. Outer shell: harden PVC board with 8mm thickness, grade A b. Liner: PVC board with 8mm thickness, grade A c. Lid: Transparent impact-resistant sheet (The lid and the chamber body are sealed with water) d. Air barrel: SUS316# stainless steel |
