| Control & Operation | PLC and touch screen intelligent control system |
Chamber Size
| Inner Size | External Size |
| W1500*H1400*D1500mm | W2000*H1720*D1780mm |
| Temperature Range | -40 °C ~+150°C |
| Humidity Range | 20%～98%RH |
| Temperature fluctuation | ±0.5℃ |
| Humidity fluctuation | 2.5% |
| Temperature deviation | ±1.0℃(-40℃-85℃) range, ±2.0℃(85℃-150℃) range |
| Humidity Deviation | ≤±3% |
| Heating Rate | ≧2-3°C/min |
| Cooling Rate | ≧1°C/min, average no load |
| Heating time | +25℃→+85℃ It takes about 30 minutes from room temperature to 85℃ |
| Cooling time | +25℃→-40℃ It takes about 55 minutes from room temperature to -40℃,
no load |
| Load condition | None |
| Working noise | A sound level≤75dB(A) (Measured in a soundproof room with an ambient temperature of 25°C
and low echo. Using A weighting, test the average of 9 points. Each
test point is 1 meter away from the noise source horizontally and 1
meter above the ground.) |
| Temperature and Humidity Range Scheme |  |
| Structural features |
| Insulation enclosure structure | 1. Outer wall material: A3 board spraying. 2. Inner wall material: brushed stainless steel plate SUS﹟304. 3. Chamber thermal insulation material: 100mm high temperature
resistant rigid polyurethane foam. 4. Chamber door insulation material: 100mm high temperature
resistant rigid polyurethane foam. |
| Bottom structure strength | The weight capacity of the track at the bottom of the test chamber:
≤100Kg/m² (load) |
| Air conditioning channel | 1. Stainless steel long-axis centrifugal fans: 6 sets/90W. 2. Fan, heater, evaporator (also dehumidifier), drainage device,
pressure balance port, adjustable air deflector, temperature sensor |
| Standard configuration of test chamber | 1. Observation window: 250x350x40mm 3-layer vacuum tempered glass 2. Flat embedded handles 3. Door hinges: SUS #304 imported hinges 4. Energy-saving lamp inside the chamber 5. Lead hole: φ50mm 1 piece |
| Chamber door | 1. The single-piece door opens outwards, with the hinge on the left
and the handle on the right (when facing the front of the box). 2. Equipped with a safety door locking mechanism (the door can be
opened in the test room), the door is equipped with electric heat
to prevent condensation, and the visible range of the insulating
glass observation window (W200×H280mm). The door frame is equipped
with an anti-condensation electric heating device. |
| Control panel | Controller 7-inch display screen, temperature (humidity) control
display screen, operating indicator light, and lighting button. |
| Mechanical room | Refrigeration unit, compressor water tray, pressure relief device,
heating device |
| Power distribution cabinet | Distribution board, cooling fan, main power switch, transformer,
intermediate relay, time relay, solid-state relay, AC contactor,
circuit breaker |
| Heater | 1. Fin-type radiator-shaped stainless steel electric heater 2. Heating control method: SSR (Solid State Relay) non-contact
equal period pulse width modulation 3. Heating power: approximately 4KW |
| Humidification control | External humidification, using a stainless steel heating barrel,
external humidification, with dry burning protection inside, can
better ensure the stability and safety of low humidity |
| Power cable hole | Located on the back of the chamber |
| Cooling system |
| Heating and cooling devices | 1. French Taikang high-efficiency energy-saving ultra-low
temperature refrigeration system (air-cooled heat dissipation
method). 2. Cooling method: water cooling |
| Heat and cold exchange device | Two-stage refrigeration system, French Taikang fully enclosed
compressor. Adopting ultra-high efficiency SWEP refrigerant heat
exchange design [Made in Sweden (sus#316)], it is more efficient
than the traditional internal spiral type. |
| Heating load adjustment | 1. The automatic adjustment of the cold coal flow rate device is
adopted to effectively take away the heating load of the product to
be tested, which is synchronized with German/Japanese technology. 2. Compared with traditional designs, the control stability and
reproducibility are higher, and it achieves ultra-high performance
in terms of power saving and energy saving. |
| Refrigeration compressor | French Taikang fully enclosed compressor |
| High efficiency components | 1. The condenser and evaporator adopt AC&R double spoiler type
aluminum fin device. 2. The throttling devices adopt imported famous brand refrigeration
accessories. |
| Expansion system | Capacity controlled refrigeration system |
| Evaporative condenser | All copper tube heat exchanger |
| Refrigerator control method | 1. The controller of the control system automatically adjusts the
operating conditions of the refrigerator according to the test
conditions. 2. Compressor return air cooling circuit |
| Refrigerants | Honeywell R404a (ozone depletion index is 0) |
