| 1. Sample limitation | This test chamber prohibits:
Testing or storage of flammable, explosive, and volatile substance
samples
Testing or storage of samples of corrosive substances
Testing or storage of biological samples
Testing or storage of strong electromagnetic emission source
samples
Testing or storage of radioactive material samples
Test or storage of highly toxic substance samples
Testing or storage of samples that may produce flammable,
explosive, volatile, highly toxic, corrosive and radioactive
materials during testing or storage |
| 2. Volume, size and weight |
| Nominal content volume | 1200L |
| Inner chamber size | W(1000) mm *D (1000) mm* H (1200) mm |
| External dimensions | Approx. W (1450) mm *D (1250) mm* H (2050) mm (excluding top motor
part) |
| Weight | Approx. 780KG |
| 3. Performance |
| Temperature range | Temperature range: -55 ℃～+100℃ |
| Humidity range | (25 ～ 98)% RH (refer to temperature and humidity controllable range
chart, no active wet and heat load)
Temperature and humidity controllable range chart |
| Temperature fluctuation | ≤±0.5℃ (stable state) |
| Temperature uniformity | ≤2.0℃ (stable state) |
| Heating time | 3℃/ min (non-linear under no load) |
| Cooling time | 1℃/min (non-linear under no load) |
Relative humidity error (Damp heat only) | ±3.0%RH |
| Temperature and humidity display accuracy | 0.01°C/0.1% RH |
| Live load handling capacity | 1000 Watts at +20°C; 800 Watts at 0°C; 500 Watts at -20°C; and 300 Watts at -40°C. |
| Working noise | Sound level≤85dB (Measured in a soundproof room with an ambient temperature of 25 °
C and low echo; using A weighting, the average value of 8 points is
tested; each test point is 1 meter away from the noise source and 1
meter away from the ground) |
| 4. Structural characteristics |
| Material | 1. Outer wall material: Cold rolled steel plate, pickling and
phosphating advanced powder baking paint
2.Inner wall material: SUS304# stainless steel plate
3. Chamber insulation material: rigid polyurethane foam + glass
fiber |
| Air duct parts | Centrifugal fan; the air outlet can adjust the air volume, height
and return air volume |
| Door | Single open door, with handle-type non-reaction handle, the door is
equipped with an observation window, lighting lamp, window/door
frame anti-condensation electric heating device, door size:
1.0*1.2M |
| Observation window | The door is with one conductive film explosion-proof tempered glass
observation window (with anti-condensation function), window size:
500W×600H (mm) |
| Fan | Long axis centrifugal fan |
| Sample rack | Two built-in stainless steel adjustable movable tray racks |
| Impeller | Use stainless steel impeller imported from Taiwan |
| Heater | Nickel-chromium alloy electric heater |
| Refrigeration Compressor | French Tecumseh compressor |
| Evaporator | Fin type evaporator |
| Refrigerating method | Mechanical compressor cascade |
| Cooling method | Air-cooling |
| Temperature control instrument | 7-inch smart LCD touch programmable controller |
| Lead hole | Φ50mm, 2 pcs, each one is equipped with a special foam rubber plug
(located on the left side of the chamber) |
| Removable shelves | 2 sets, each can hold a minimum of 20 kgs |
| 5. Heating, humidification and refrigeration systems and their
working principles |
| Heating system | Stainless steel sleeve type anti-dry heating tube built-in
nickel-chromium alloy heating wire |
| U-shaped fin type stainless steel high-speed heating electric
heater is used for heating |
| Completely independent system, does not affect the control circuit |
| Humidification system | Humidify method: 1. External detachable boiler humidification method or built-in
water tank humidification 2. Stainless steel armored humidifier 3. Humidifier control mode: non-contact equal period pulse width
adjustment, SSR (solid state relay) 4. Water level control device, humidifier anti-dry burning device,
sediment collection device, liquid level observation window 5. Humidifier power: 6KW Humidifier: 1. Automatic water supply device or push-button electric automatic
water replenishment 2. RO membrane + activated carbon water supply filter, removable
for cleaning 3. High and low temperature double water level electronic liquid
level switch to prevent mis-operation 4. Water shortage and empty heating and over-temperature protection
+ ultra-low water level protection + water supply over-time
protection to ensure the safe operation of the equipment |
| Refrigeration system | Cooling method: air-cooling |
| Refrigeration compressor: French Tecumseh compressor with
environmentally friendly refrigerant |
| Refrigerant copper tube: inner spiral K-TYPE refrigerant copper
tube |
| Condenser: wave-shaped fin type air-cooled condenser |
| Evaporator: Slope type FIN—TUBE evaporator |
| Freezing element: Original imported solenoid valve, drying filter,
etc. |
| Refrigerant: R448a & R 508b |
| Features | The pipelines of the whole system are subjected to a 22kg leak
detection test |
| The heating and cooling system is completely independent |
| Equipped with the company's professional technical characteristics,
it can prevent the high temperature and high-pressure airflow from
returning to the cooling machine and damage the system. |
| All refrigeration system action programs are completely controlled
by the microcomputer controller |
| 6. Electrical control system |
| Name | Brand | Remark |
Compressor | Tecumseh, France |
|
| Pressure relays | Denmark DANFOSS Or America EMERSON |
|
| Evaporating pressure regulator | Denmark DANFOSS | |
| Filter drier | Denmark DANFOSS Or America EMERSON |
|
| Throttling device | Capillary or expansion valve | |
| Solenoid valve | Japan SAGLNOMIYA or Italy CASTEL or America EMERSON |
|
| Expansion valve | Denmark DANFOSS |
|
| 7. Regulation system |
| Regulation method | Forced circulation ventilation, balance temperature regulation
method. The control system controls the output of the heater
through the PID automatic calculation output according to the
temperature point set by the system, and finally reaches a dynamic
balance.
|
| Circulation device | The built-in air-conditioning room, circulating air duct and long
axial flow fan can improve the air flow and heating capacity by
improving the air flow, and greatly improve the temperature
uniformity of the test chamber. |
| 8. Program control system |
| Controller | 7 inch smart LCD touch programmable controller |
| Touch-type high-resolution screen | Arbitrary setting of fixed conditions, program conditions, and
setting of curing test name, serial number, etc. |
| Time range can be set | 0—999H59min |
| Programmable mode | At the same time, 120 groups of programs with different conditions
can be set. In any group of programs, it can be divided into 1200
segments, and part of the number of segments can be intercepted
arbitrarily to execute the cycle, or to perform cycle work of any
section or group. |
| Safety | It has a power-off memory device, which can continue to execute the
remaining programs when the power is restored, and can be used as a
machine appointment to execute the startup and machine running
time. |
| Control | The temperature rise and fall can be used for slope control, curve
control, and have the function of self-correcting temperature and
humidity reference points. It has the function of PID automatic
calculation, which can reduce the convenience caused by manual
setting. |
| Communication function | U disk interface, RS-232 interface, misoperation hardware lock
(LOCK), computer communication software is provided |
| Setting | Settings and all conditions are automatically locked by
microcomputer |
| Alarm | If an error occurs during setting or operation, a warning signal
will be provided |
| Output | The controller has a recording signal port output, which can be
connected to a temperature and humidity recorder and can output
recording curves |
| Interface | Equipped with standard RS-232 communication interface, long
transmission distance, can be connected to PC for control and
recording. |
| 9. Safety protection device |
| Refrigeration system | 1. Compressor overheating protection
2. Compressor overcurrent protection
3. Compressor high- and low-pressure protection
4. Compressor oil pressure protection (optional for large
semi-hermetic compressors)
5. Over-temperature protection for liquid supply temperature
6. Ultra-high pressure relief protection
7. Air-cooled: condensing fan overheated protection |
| Test chamber | 1. Adjustable over temperature protection
2. Limit over-temperature protection of air conditioning channels
3. Fan motor overheat protection |
| Other protection | 1. Total power phase sequence and phase loss protection (applicable
to three-phase power supply) 2. Overload and short circuit protection 3. Refrigeration system failure alarm protection caused by multiple
openings of the box |
| 10. Conditions of use (The following conditions are guaranteed by the user) |
| The installation site | 1. The ground is level and well ventilated
2.No strong vibration around the equipment
3.No strong electromagnetic field around the equipment
4.No flammable, explosive, corrosive substances and dust around the
equipment
5. Appropriate use and maintenance space is left around the
equipment, as shown below:
A:≥40cm B:≥150cm C:≥100cm D: ≥60cm E:≥40com |
| Environmental conditions | 1. Temperature: 5 ℃ ～ 35 ℃
2. Relative humidity: ≤85%
3. Air pressure: 86kPa ～ 106kPa |
| Power supply conditions | Power supply requirements:
1. Come with a 20KVA AC Frequency Power to achieve the test chamber
to work under input of 208V to 230V, Phase: 3 phase, Frequency:
60Hz
2. The protective earth ground resistance is less than 4Ω
3. The user is required to configure the equipment with an air or
power switch of the corresponding capacity at the installation
site, and this switch must be independently used by the device |
Maximum current
Maximum power consumption | Imax ≤ 32A Pmax ≤ 15KW |
| Others | Opening the door of the test chamber during the test will cause
temperature and humidity fluctuations in the chamber; if the door
is opened multiple times or is left open for a long time or the
test sample emits moisture during the test, the refrigeration
system heat exchanger may freeze and does not work. |
