• Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB
  • Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB
  • Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB
  • Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB
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Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB

Product Details:

Place of Origin: China
Brand Name: Sinuo
Certification: Calibration Certificate (Cost Additional)
Model Number: SN886-13m³

Payment & Shipping Terms:

Minimum Order Quantity: 1
Price: Customized
Packaging Details: Other
Delivery Time: 45 days
Payment Terms: T/T
Supply Ability: 10 sets/month
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Detail Information

Applied Standard: IEC 60068-2 Nominal Volume: 13m³
Temperature Range: 0 ℃~+100℃ Temperature Fluctuation: ≤±0.5℃
Humidity Range: (20 ~ 98)% RH Heating Time: ≥3℃/min
Cooling Time: ≥1℃/min Working Noise: ≤75dB
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Humidity Walk In Environmental Test Chamber


75dB Walk In Environmental Test Chamber


75dB walk in humidity chamber

Product Description



Constant Temperature Humidity Walk-In Environmental Test Chamber 13m³


Complied Standards & Clauses

IEC60068-2-1:2007 “Environmental Testing-Part 2-1: Tests-Test A: Cold, IDT”


IEC60068-2-2:2007 “Environmental Testing-Part 2-1: Tests- Test B-Dry heat, IDT”


IEC60068-2-30:2005 “Environmental Testing-Part 2-30: Tests-Test Db: Damp heat, cyclic (12h+12h cycle), IDT”


IEC60068-2-78:2012 “Environmental Testing-Part 2-78: Tests-Test Cab: Damp heat, steady state, IDT”


Technical Parameters


No. Project Content
A Product number SN886C-13m³
B Product brand SINUO
C Inner size D2950 x W1750 X H2500 (without motor) mm, Volume: 13m³
Outer size Cabinet part: about 3500 D × 1950W × 2950H mm
D Temperature range 0℃~+100℃(range adjustable)
Humidity range 20%-98% RH (refer to the temperature and humidity controllable range chart, no heat load)Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB 0
Temperature uniformity ≤±1.0℃ (When no load, keep a distance of 1 meter to measure)
Heating rate 0℃~100℃, The average heating rate in the whole process ≥3.0℃/min (no load)
Cooling rate RT~0℃, The average heating rate in the whole process ≥1.0℃/min (no load)
Temperature fluctuation ≤±0.5℃
Temperature deviation ≤±1.0℃
Humidity uniformity +2.0%RH / -3.0%RH
Humidity deviation ≤±3.0%RH, (humidity>75%), ≤±4.0%RH (humidity≤75%)
E Motor noise ≤75dB
G Power

Refrigeration: 3.5KW

Heating: 9KW

Humidification: 9KW

Motor: 0.75KW*6=4.5W

Others: ≈1.5KW

Total installed power: Pmax≤27.5KW (subject to final design)



Equipment Overview


Installation and Use Environment

NO. Content Project
A Atmospheric environment

Ambient temperature: 5℃~+35℃, relative humidity: ≤90% RH

There should not be high concentrations of components, corrosive gases and flammable and explosive atmospheres around

B Power supply

AC380V±10%, 50HZ±1HZ, three-phase five-wire system

The power cable lead hole is at the lower right rear of the test chamber

C Ground The grounding resistance bolt is on the right rear of the box base
D Drain The drainage hole of the box is at the left rear of the box base, and a DN10 silicone tube 3 meters is included.
E Installation site requirements Leave room for normal opening and closing of the box door, good ventilation, and the ground bearing capacity is not less than 800kg/㎡
Chamber Construction
No. Project Content
A Device layout

The test chamber and the refrigeration unit are of split design. After the equipment is installed in place, the refrigeration pipeline and electrical circuit are connected and checked before starting the machine;

The controller adopts an independent control cabinet and is installed on the right side of the laboratory.

The equipment adopts a split type, and the refrigeration unit and electrical control cabinet are installed on the right side of the equipment.

The connection between the box body and the unit adopts explosion-proof junction box and galvanized steel pipe, and the connection process conforms to the relevant national standards for explosion-proof.

Parameter Data
Thermal Conductivity 0.0162 kcal/m·degree·hour
Thermal conductivity 0.000942 m2/hour
specific heat 0.338 kcal/kg·degree
Compressive strength >2Kgf/cm2
Flexural strength >2.5Kgf/cm2
water absorption <3g/100cm2
self-extinguishing ≯7 seconds


B Shell Made of 1.0mm cold-rolled steel plate, indicated by computer gray anti-static spray paint
Insulation Materials PU (polyurethane) foam + ultra-fine centrifugal glass wool composite insulation layer, ≥100mm
Inner wall The inner wall is made of 1.0mm SUS304 stainless steel plate, and all unsealed TIG are continuously welded to ensure no leakage after long-term test.
C Air supply system

The air duct is located behind the studio:

The explosion-proof motor is installed on the top of the box, the aluminum centrifugal fan impeller is installed on the top of the test box, and the air is evenly supplied through the air outlet of the volute to meet the requirements of temperature uniformity.

D Door

1. Set up 2 split doors, the size of the door opening (800+800) W×2500Hmm,

2. The door is sealed with double-layer high and low temperature resistant soft silicone rubber sealing strip

3. Rotary hinge can ensure the door opening angle ≥ 120 degrees

4. The inner edge of the door is set with a constant temperature heating belt, and the control system automatically turns on the heating belt to defrost according to the studio temperature.

E Observation window

Two sets of visual observation windows (500×600mm) are installed on the gate. The observation window glass is made of multi-layer insulating glass coated with electric heating film. The observation window has high light transmittance, good heat insulation effect, and no resistance wire on the glass surface. Observation and other advantages, when the studio temperature is lower than the ambient temperature, the control automatically turns on the defogging function of the observation window.


F Explosion-proof measures

1. The motor adopts professional motor: 0.75KW, 6 sets of IP55

2. The fan volute is made of aluminum to prevent sparks from friction between the impeller and the volute;

3. Both the inner and outer casings are provided with reliable grounding lines, and the surface of the equipment is sprayed with conductive anti-static paint to ensure that no static electricity can accumulate on the surface of the equipment casing.

4. The temperature sensor (PT100) adopts explosion-proof sensor.

5. The heating device is a stainless-steel heater without an open flame.

6. The wiring of explosion-proof electrical appliances meets the national explosion-proof requirements.

7. Set up an independent over-temperature protector, that is, a two-section temperature protection instrument, to prevent the danger of overshooting of the temperature in the work room.

Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB 1

G Explosion-proof lighting in the box Built-in 2 sets of explosion-proof lighting fixtures ensure that the specimens in the box can be clearly observed under any working conditions.
H Test hole 1~2 φ100 test holes are installed on the left and right sides of the studio, and the test is equipped with a stainless-steel cover and a flexible silicone rubber hole plug. (The specific number of openings is arranged according to customer needs)
F Active slope

There is a transition plate with a slope at the door of the test room, which is convenient for the test sample to enter and exit the test room



J Air pressure balance device Ensure that the air pressure in the box is basically the same as that of the outside during the heating, cooling and constant testing of the equipment.
K Heater

1. Nickel-chromium alloy heating wire heater

2. Heater control mode: non-contact equal period pulse width adjustment, SSR (solid state relay)

3. Heater power: ≤9.0 KW

L Humidifier

1. External detachable boiler humidification method

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: ≤9.0KW

N Water supply device

The automatic water replenishment device is adopted. After connecting the tap water with a 1/2" water pipe, the water supply device is an international famous brand, which can automatically filter and deionize the water.

Demineralized water flow: 10L/h

Water pressure: 0.1~0.25Mpa

Water hardness: ≤0.03mol/L (1.5mg/L, calculated as CaCO3) m, the national standard for humidification water, to provide the deionized water required for the humidification part of the equipment

Cooling System
No. Project Content
A Cooling method Adopt mechanical cascade compression refrigeration
B Load Calculation The professional load calculation software can quickly, scientifically and reasonably select the appropriate model for the customer according to the user's use conditions.
C Compressor 1 BITZER semi-hermetic compressor unit
D The refrigerant

New refrigerants that meet international environmental protection requirements:

1. High temperature grade: R404A

2. Low temperature grade: R23

E Main feature

1. The main configuration of the refrigeration system adopts imported components from Europe and the United States. For the specific configuration, see the main configuration list of the equipment;

2. Danfoss stainless steel brazed plate heat exchanger is used as the evaporative condenser of the cascade refrigeration system, with small heat transfer temperature difference, high heat exchange efficiency and compact appearance;

3. In order to prevent the defrosted water on the compressor from flowing freely, a water receiving tray is installed under the compressor, which is collected and discharged in a centralized manner;

4. Equipped with a pressure gauge to display the system pressure, which is convenient for the inspection and maintenance of the refrigeration system

F Shock absorption and noise reduction

In order to reduce the noise in the laboratory, a comprehensive scheme of internal noise reduction of the unit and shock absorption of the compressor is adopted.

1. Compressor damping (applied for a utility model patent)

1.1 Install shock-absorbing springs and rubber pads at the bottom of the compressor to reduce the transmission of compressor vibration to the unit frame through the base;

1.2 The compressor suction and exhaust pipes use metal shock-absorbing hoses from American Packless or Italian Castel to reduce vibration transmission through the pipes.

1.3 Compressor process pipeline adopts shock-absorbing bend and distal fixation to avoid resonance

2. Muffler in the unit;

The unit enclosure is pasted with sound-absorbing cotton. Since the interior of the unit needs ventilation and heat dissipation, in order to reduce the air transmission of noise, sound baffles with oil-absorbing sound-absorbing cotton are installed at the air inlet and outlet to reduce the transmission of sound waves to the room through the ventilation holes.


Freezer Accessories

Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB 2

Air Condition

No. Project Content
A Temperature measurement Using high-precision class A PT100 sensor
B Heating

1. The heating device is explosion-proof armored heater

2. The solid-state relay is used for non-contact zero-crossing start-up to drive the heater to work, without contact sparks and noise, and has a long service life.

C Temperature control The controller compares the temperature sensor signal with the set value, and automatically adjusts the heating power through the PID output, so that the air thermometer in the equipment box can reach a dynamic balance.
Eletronic Control
No. Project Content
A Controller parameters

Using Korean "Sanyuan" TEIM 2700 color touch screen controller, the main features are as follows:

Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB 3

  1. 7-inch TFT true color touch screen, the man-machine interface can be selected in Chinese or English, and the menu operation method makes it easy for users to master the operation method of the equipment;
  2. Display accuracy: temperature 0.1℃; time 0.1min
  3. Two test methods can be selected: constant temperature (manual operation) or program (ie, preset program automatic operation)
  4. The equipment operation has a high degree of automation. Set the target temperature or preset equipment operation procedures. After the operation button is activated, the system can automatically determine whether to open the refrigeration unit, heater or blower. Colleagues can automatically adjust the heating output without excessive user operations or monitoring, the ideal test process curve can be obtained.
  5. The preset program running function provides users to preset 1000 program curves, each curve can be set up to 100 steps, 6 groups of small cycles, and 10 different programs can be linked, and the program can be retrieved and stored for the next test. can be called directly.
  6. During the test, important reference parameters such as current target temperature, measured temperature, heating output, running time, and program running process can be displayed in real time.
  7. It can store temperature curves and data for 600 days.
  8. Fault self-diagnosis function, when the equipment fails, it will automatically alarm and cut off the power supply. Colleagues will display the fault phenomenon and simple fault description on the controller, and users can easily find the cause according to the fault.
B Password protection The controller has a multi-level password function with clear authority, which can prevent accidental shutdown or test interruption caused by mis-operation.
C Host computer (two devices share one computer)

1. USB data recording function:

2. You can directly insert any U disk anywhere in the history record file, and perform operations such as reading and analysis on the computer.

3. Powerful PC software functions, standard 10M/100M Ethernet interface, automatic IP address acquisition, network identification, and easy control.

3.1. Host computer:

The host computer is directly connected to a test box through a network cable

3.2, LAN:

Multiple computers and multiple UMC1000 control area LAN connections

3.3, WEB SERVER remote synchronization;

Remote monitoring can be performed through the INTERNET NET test.

D Safety protection

1. Personnel safety

1.1, leakage protection

2. Equipment safety:

2.1, power supply phase loss, phase error, voltage instability protection;

2.2. Control loop current limiting protection

2.3. Fan motor overload protection

2.4. Compressor current overload protection

2.5, compressor overheating protection

2.6. Compressor high pressure protection

2.7, heater short circuit protection

2.8. Equipment leakage protection

2.9. Secondary independent over-temperature protection function


Quality Assurance


No. Content
1 Strictly operate in accordance with the ISO9000-2000 quality management system, and perfect design and manufacturing process to ensure superior product performance and reliable quality.
2 After the equipment is qualified, the whole machine is guaranteed for 1 year free of charge and maintained for life.
3 After the warranty period ends, the manufacturer provides lifetime maintenance and only charges the cost of the parts.
4 Respond and propose solutions within 2 hours after receiving the notice of maintenance of the applicable room, and provide solutions within 12-24 hours.
Use Environment
Environmental conditions

Temperature: 5℃~35℃

Relative humidity: ≤85

Atmospheric pressure: 80-106 kPa

Site conditions

There is no strong vibration around;

No direct sunlight or direct radiation from other heat sources;

No strong air flow: when the surrounding air needs to be forced to flow, no air flow is directly blown to the box;

There is no strong electromagnetic field around;

There is no high concentration of dust and corrosive substances around.

Power supply conditions

Voltage and frequency: AC380V±10%, 50Hz±0.5Hz, single-phase two-wire + protective ground wire

Grounding resistance of protective ground wire: The grounding resistance of protective ground wire is less than 4Ω

Product Features and Advantages
  1. Energy saving: The technology is based on the PWM solenoid valve customized by Sporlan Company in the United States. This technology realizes the regulation of the pipeline flow through the frequent actions of the solenoid valve. The standard solenoid valve cannot adapt to it, and it will cause fatigue damage in a short time. Currently, this technology is supported. The main performance valve is only produced by Sporlan Company in the United States. The following picture shows the difference between the solenoid valves.

Constant Temperature Humidity walk in environmental test chamber 13m3 less than 75dB 4

PWM Valve Normal Valve

  1. Performance: The equipment conforms to the latest standards, the equipment is integral, beautiful and easy to transport;The main parts of the equipment are selected from well-known brands at home and abroad. The fully enclosed and imported French "" compressor with higher precision and the Hangzhou "Yuanfang" variable frequency power supply with better stability make the precision control more accurate during the operation of the equipment. Noise Lower, more stable performance and longer service life;
  2. Device control: The device can be connected to multiple devices, controlled by mobile phone APP, and controlled by advanced PLC, which is more intelligent and more convenient to operate. The true color touch screen displays various test data (temperature, time, test curve), which is easier to operate. observation records;
  3. Measurement and control system: real-time and dynamic display of test process and test curve, data processing through modular software, data reanalysis and editing of curve amplification, output of test reports and curve patterns in different formats, and support for networked data transmission.
  4. Professional, safe and user-friendly design: emergency stop control switch, in case of emergency, can lock equipment reliably; effectively protect equipment; multiple protection of software and hardware to ensure the safety of equipment and personnel.

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