Constant Climate High and Low Humidity Ort Test Chamber

• Customization: Available
• Usage: SMT Production Line, Printing Workshop, Computer Room, Electronic Component Maintenance Room, Combustible & Explosive Area, Lab Equipment
• Condition: New
• Model NO.: T-10
• Waterproof: Non-Waterproof
• Material: Metal
• Type: Test Chamber
• Transport Package: Customized
• Specification: Customized
• Trademark: ECW
• Origin: China
• HS Code: 8514109000
• Production Capacity: 100000PC

Product Description

Main Specification:

Work volume	1725L
Inner size	1320mm*1170mm*1120mm W*H*D
Outer size	1810mm*2000mm*2000mm W*H*D
Temp range	-40ºC---+180ºC
Humidity range	10%-98%RH
Temp stability	±0.5ºC( no load)  RH:±2.0%
Temp uniformity	±0.2ºC( no load)  RH:±2.0%
control accuracy	0.01ºC
Cooling rate	RT- -40ºC/100min  1ºC/min
Temp rise rate	Rt- +150ºC/50min  3ºC/min

1, Structure:
The test chamber contains the following systems: 1. Main cabinet; 2. Heating system; 3. Air control system; 4. Refrigeration system 5. Electrical control and measurement system; 6. Safety protection device.

The door is a single door, open from right to left. The rightmost side of the chamber is the control cabinet, which is equipped with circuit boards and other electrical components. The top of the control cabinet is equipped with a cooling fan to help the electrical control cabinet quickly dissipate heat. , The position and height of the operation panel are designed according to ergonomics. The bottom of the cabinet is a compressor unit, and a set of refrigeration units is installed, which is connected to the cabinet through copper pipes.

Outer layer material	High-quality cold-rolled plate spray paint
Inner layer material	SUS#304 mirror stainless steel plate
Observation window	40*50cm rectangular multi-layer vacuum electric heating glass observation window, completely prevent the observation window from condensation
Insulation Material	High density rigid PU foam and 24K glass wool
Illumination	LED light
Inlet test hole	1 Ø50mm cable hole, installed on the left side of the chamber in case that the test object needs an external power supply or signal. The cable hole made of special materials can withstand high and low temperatures for a long time, and solves the problem of surface condensation during long-term low-temperature tests. , Equipped with a cover of the same material and a silicone plug
Isothermal board	An isothermal plate is designed on the top of the test box to avoid the problem of condensed water dripping onto the product during the humidity test and causing the product to be scrapped.
Door	The special design of the test chamber door structure and the sealing strip can effectively keep warm and prevent temperature escaping
Air pressure balance device	The top of the test box is equipped with an air pressure balance device, which can automatically open and release the pressure when the pressure is too high to ensure that the air pressure in the box is always maintained same with the outside world during the heating, cooling, and constant test.

2, Heating system

Heater	High-quality finned electric heater, no open flame, reasonable design length and installation method, make heating load on the surface even, and the service life is longer. The heater is installed in the air duct.
Heating control mode	Use non-contact and isocycle pulse width adjustment SSR (solid state relay) to control the heating output, which can effectively adjust the temperature rise and fall process, and avoid the phenomenon of large temperature overshoot
Overheat protector	An overheat protector is installed in the air duct, when the temperature in the box exceeds the temperature set by the protector,it will alarm and automatically cut off the heater

3, Air control system
An air control system is installed at the rear of the test chamber. After the air is sucked into the air duct by the centrifugal blades through the long-axis blower, the control system controls the output of the heater through the PID automatic calculation output according to the set temperature point.

4, Refrigeration system

Compressor	Tecumseh compressor The design of the refrigeration system applies energy adjustment technology to ensure that the energy consumption and refrigeration capacity of the refrigeration system are effectively adjusted under the normal operation , make operating costs more economical
Condenser	High-efficiency heat exchange coils, aluminum fins  "L"-shaped extension flaps, tight close contact with expansion tube, greatly improving the heat transfer efficiency
Evaporator	High-performance internally threaded coil, high-performance turbulent aluminum fins
Heat exchanger	Adopt high-quality brazed plate heat exchanger, all plates are joined together by copper solder, all contact points are completely welded together, to ensure that the heat exchanger has the highest heat exchange efficiency
The electromagnetic valve	Adopt  Danfoss two-way  electromagnetic valve, the protection level of the  valve coil shell is as high as IP67 to ensure normal operation under various working conditions.
Oil separator	Using Emerson high-efficiency centrifugal oil separator, the oil return rate is as high as 99%, which can effectively reduce the load of the evaporator and compressor, the pressure reduction design can maximize the flow rate,
thermal expansion valve	The Danfoss dual-port thermal expansion valve is used to shut off the flow. The expansion valve adjusts the flow rate through the change of the heat at the end of the evaporator to prevent insufficient utilization of the evaporator area and compressor machine knocking
Pressure controller	Adopt Danfoss single-pole double-throw pressure controller, with system pressure over high alarm, automatic reset function, compact structure design
Evaporator regulating valve	The Danfoss evaporation pressure regulating valve is used to keep the evaporation pressure of the system constant. through the throttling of the regulator on the suction line, the surface temperature of the evaporator can be controlled to avoid long-term low-temperature, high-humidity or low-temperature and low-humidity tests caused by evaporator icing phenomenon.
Refrigerant	R404 R23
Cooling mode	Air cooling

5, Electrical control and measurement system
Adopt high-precision programmable temperature and humidity controller, which uses 7 color LCD screens,
The screen resolution is 800×480 (true color). The setting method is full Chinese/English menu, touch screen input, which can display the set temperature and humidity, the actual measured temperature and humidity, test parameters, curves, total running time, segment running time, heating, humidifier working status, and it also has power-on self-check and test Program automatic operation and PID parameter self-tuning, fault alarm and cause display, and processing prompt function, calendar timing function (automatic start and automatic stop operation), etc., with LAN interface. It can be connected to a computer, and a set of working software is provided. (Including communication protocol), users can print test curves through their own computer. Through the communication protocol, users can make their own programs. Through the network cable interface, remote monitoring function can be realized

Temp sensor	PT100
Humidity sensor	PT100
Screen resolution	800*480
Setting accuracy	Temp:0.01ºC Humidity: 0.1%RH  Time:1s
Program capacity	1000 groups, each group can have up to 100 segments, the number of segments required by each group of programs can be divided arbitrarily, and each group of programs can be freely connected to each other
Program group loop	999( set 0, infinite loop)
Program segment loop	99
Instrument setting range	Temperature: -100ºC~+200ºC, Humidity: 0~100%RH Time: When doing program test, each program can be done for up to 999 hours and 59 minutes
PID	9 groups each for temperature and humidity
Power-off memory	With power-off memory function and restart mode when power is restored
Schedule booting	Schedule the boot time by setting year, month, day and minute
Operation mode	Program operation, fixed value operation, and connection operation three operation modes
Backlight	The brightness of backlight is adjustable, and the turn-on time is set according to the test time to achieve the purpose of prolonging the service life
Interface	Ethernet interface
The instrument connecting method with the host computer	Direct connection method, LAN network method, Internet method
Emergency stop switch	Emergency stop switch, in case of equipment accidents

6, Manufacturing technology
☆Electrical appliances and refrigeration components are all internationally renowned brands, ensuring the versatility of components.
☆Electrical circuit boards are made according to national standards.
☆The refrigeration copper pipe adopts high-quality oxygen-free copper , and the copper pipe is welded by the advanced nitrogen flushing and fluxing process.The surface of the welded copper pipe is bright, and the inner wall has no oxide layer, which greatly improves the cleanliness of the low-temperature pipeline of the test chamber.
☆The test chambers have undergone a 24-hour nitrogen pressure test.

7, safety protection
In order to ensure the normal operation of the equipment, the chamber has the following safety protection and alarm functions. When a fault occurs, there will be a sound and light signal output (three-color light)
☆Independent over-temperature protection device (a separate over-temperature protector, the sensor position is consistent with the temperature sensor of the test chamber, to prevent the product from being burned when the test room temperature is too high)
☆Heater over-temperature protection (the sensor is installed on the upper part of the heater to prevent damage due to high surface temperature.
☆Heater short circuit protection.
☆Leakage circuit breakers.
☆Air switch (to prevent overcurrent and short circuit).
☆Fuse (to prevent short circuit of controller and lighting circuit).
☆Lack of phase protection (equipped with phase sequence relay, when the test box is lack of phase, the test box cannot be started).
☆Fan overheating, overcurrent protection.
☆Refrigeration compressor thermal overload protection.
☆Refrigeration compressor overpressure protection.
☆Humidifier water shortage protection.

8, Installation condition

In-place channel	Can pass according to the outer dimensions of the chamber(note the special links such as corners, entrance dimensions, elevator dimensions, etc.)
Ground load-bearing	The ground load-bearing requirement of the site ≥600kg/m2 (for the installation site upstairs or vacant underground)
Site requirements and size required for placement	Maintenance space around the equipment: left and right ≥ 80cm; top ≥ 60cm; front ≥ 145cm; rear ≥ 110cm. The ground is flat, well ventilated, and does not contain flammable, explosive, corrosive gas and dust. There is no strong electromagnetic radiation source nearby.It is best to have a drainage floor drain next to the chamber
Power	18KW
Input voltage	380V±10%, 50Hz±1 three-phase four-wire + grounding wire, protective grounding resistance is less than 4Ω
Grounding	Grounding resistance <4Ω, independent grounding, namely TN-S grounding system, using three-phase five-wire AC power supply (mixed use of middle and ground is strictly prohibited)
Cable	It is recommended to choose a rubber sheathed copper core power cord no less than 3×20mm²+2×10mm²
Environment	1, 5~25ºC to ensure the best performance, 25~35ºC can operate normally (for air-cooled test chamber) 2,humidity: ≤85%RH 3, air pressure:86KPa~106KPa