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) | | 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. | | 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 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: - 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;
- Display accuracy: temperature 0.1℃; time 0.1min
- Two test methods can be selected: constant temperature (manual
operation) or program (ie, preset program automatic operation)
- 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.
- 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.
- 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.
- It can store temperature curves and data for 600 days.
- 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 - 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.
PWM Valve Normal Valve - 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;
- 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;
- 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.
- 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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