IEC 60068-2-11 Programmable Salt Spray Salt Mist Fog Corrosion Test
Chamber
Product Information:
The Compound Salt Spray Test Equipment is designed and manufactured
according to the standard requirement of IEC60068-2-11, it is required by IEC 62368-1:2018 clause Y.3, ASTM-B117, GJB150, DIN50021-75, ISO3768, ISO3769, ISO3770, CNS
3627, CNS 3885, CNS 4159, CNS 7669, CNS 8866, JISD-0201, H-8502,
H-8610, K-5400, Z-2371, etc.
The test chamber is the closest to the actual natural conditions in
the accelerated corrosion test. It is simulated by the conditions
encountered in the natural environment: such as salt spray, hot air
drying (optional), humidity, low temperature, etc., and can be
combined in any order in the cyclical test. The main test items are
tested in a drastically changing environment, such as: auto parts,
aviation equipment, building materials, coating films, electrical
equipment, etc.
Working Principle:
(1) Salt spray system
The salt spray system consists of a solvent tank, a variable-speed
magnetic pump, a pneumatic system, a water tank, a spray tower,
nozzles, etc. The pump removes the water from the storage bucket
into the test room, the heating tube works to provide the required
humidity and temperature in the chamber, and the salt solution is
atomized by compressed air through spraying. The spray tower is
detachable for easy disassembly and washing. In the salt spray
state, when the low water level switch of the water tank detects
the low water level, the water tank heater is turned off and the
spraying stops. The water level device automatically fills water by
turning on the water injection solenoid valve until the high-water
level switch detects the high-water level. When the water injection
solenoid valve stops, the heating pipe starts to work. When the
program meets the requirements, it will spray automatically.
(2) Drying system
The drying system consists of a blower, air heater, diffuser,
pipes, etc. Under the drying function, the blower enters the indoor
air into the box through the air heater, thus creating a low
humidity environment in the chamber. The temperature of the cabinet
is controlled by a humidifier and an air heater. The blower with
large air volume can also change the temperature very quickly, so
as to realize the fast circulation function. At the same time, when
the temperature reaches the requirements, if the humidity
difference is large, the humidifier will also output part of the
power to compensate for the humidity in the chamber.
(3) Humidity system
The humidity system is composed of steam generator, blast, water
circuit, condensing device, etc. Under the humidity function, by
evaporating hot water into the tank, the tank body maintains the
relative humidity. It can also keep the proper temperature in the
chamber through the combination of the heater of the steam
generator and the refrigeration of the compressor. When the
temperature reaches the set requirement, if the humidity is too
high, the condenser will reduce the humidity. On the contrary, if
the humidity is too low, the humidifier will output part of the
power to adjust the humidity in the chamber.
Technical Parameters
| Applied standard | IEC 60068-2-11 |
| Inner chamber size(w*d*h) | 1450*800*680mm (Customized) |
| Laboratory temperature range | Indoor temperature ～60℃ |
| Relative humidity | 30%～98%rh(±3%) |
| Saturation barrel temperature | 47℃～72℃ |
| Temperature uniformity | ±1℃ |
| Temperature fluctuation | ≤±2℃ |
| Temperature rise and fall rate | In no-load, non-extreme conditions, conversion time <1h; In no-load, extreme cases, conversion time <2h |
| Test time | 0～999 h, m adjustable |
| Settlement | 1～2ml/80cm²/h |
| Spray method | Programmable spray, dry, wet |
| Defogging method | Exhaust mist by air squeeze from fan |
| Sample rack | Meet the standard requirements |
| Power supply | 380v,50hz, 16kw |
| Instrument weight | About 450kg |
| Heater | Nickel-chromium alloy heating wire |
| Control system | Controller | Adopt Taiwan Weinview touch screen |
| Temperature sensor | Anti-corrosion platinum resistance PT100Ω/MV |
| Heating method | Adopt titanium alloy high-speed heating electric heater |
| Spray system | The nozzle without crystallization and uniform distribution of mist
particles after long work |
| Salt collection | Conform to the international funnel and standard measuring cylinder |
| Refrigerating system | Compressor | Original French Tecumseh fully enclosed refrigeration compressor |
| Condenser | Wave-shaped fin type forced air condenser |
| Evaporator | Use titanium alloy evaporator to prevent corrosion |
| Electronic component | Original solenoid valve, filter drier, expansion and other
refrigeration components |
| Chamber material | Adopt epoxy glass fiber reinforced plastic integral moldings,
corrosion resistance, light weight, high strength, the inner wall
of the chamber is smooth and easy to clean, and never leaks |
| Cover material | It is made of glass fiber reinforced plastic and made into a top
cover of 100º～120º. The lid and the box body are sealed with
silicone rubber sealing strips, so that the condensed water of the
salt spray in the box will not directly drip on the sample (the lid
opening/closing is a pneumatic device, no need to open manually) |
| Salt water tank material | External large-capacity sodium chloride solution storage tank (PVC
material) |
| Pressure barrel material | Made of SUS304# stainless steel, the appearance is electrolytically
treated, and the corrosion resistance is excellent |
