Structural Features
● Unique door lock design for easy locking and better sealing performance.
● Drawer-type water tank.
● Large size observation window makes it convenient for operator to observe the test sample inside the chamber.
● Lead hole is available on the two sides of the equipment, convenient for placing the testing apparatus, leads and others on the two sides of the equipment.
● The inner chamber is made by SS304 stainless steel; the external chamber is made by SECC with electrostatic powder coating.
● Modularized Refrigerator system, waterway system and the electrical control system for safety and ease of maintenance.
● Air vents in the chamber for uniformity in temperature inside the chamber and the temperature and humidity can become constant at a much faster speed. The angle of guide vane can be adjusted freely, effectively ensuring the uniformity inside the chamber.
Refrigeration System
● Major parts and accessories from international famous brands.
● Refrigerant R404A and R23 are used in the system with the ozone depletion factor of 0.
● All condensers are installed with filtration device, which ensures long-term reliable operation of the unit
● Intelligent control of refrigeration system optimizes power consumption.
● Imported compressor: Tecumseh, Copeland, Bock or Bitzer, low in noise, stable in operation and powerful in performance.
●Before welding, all pipelines are charged with nitrogen to protect the interior of the copper part from oxidation. The weld joints are sprayed with varnish for protection.
● Refrigeration unit adopts modular production, including sub-assembly, part assembly and general assembly; standardized modules are convenient to install, debug and maintain.
Control System
●Topect touch-type temperature and humidity controller is specially developed by Topect for the industry of environmental equipment; it consists of touch screen, PLC, temperature module and humidity module. The touch screen is equipped with visual editing software, PLC logic programmer, extendable I&O port and extendable multi-point temperature; USB interface allows users to export monthly/weekly data. Remote monitoring is realized through RS485 communication and PC connection.
●The high-performance controllers are developed independently by TOPECT, characterized by 65536 color 7″， TFT true-color touch screen and 800×480 dot matrix, it ensures real effects and easy in operation. In addition, the entire interface is concise and clear, convenient and reliable.
Our controllers have powerful debugging protection function, fault alarm and troubleshooting description; extendable I&O port can be used to input different control programs according to requirement to realize different functions; they can be customized as per requirement.
●With PLC program control, this system has timed running & stop function and power failure protection function to improve stability of the system.
It can be connected to a centralized monitoring software and supports communication protocol; it is convenient for users to develop the program once again; multiple test chambers can be monitored remotely.
Standard Configuration
● Power supply control terminal for test samples
● Compressor overpressure & overheating protection device for compressor
●2 Cable port holes of φ50
● Single leaf door with toughened glass inspection window for viewing the specimen under test inside the chamber with pre-heating system to avoid the condensation
● Stainless steel inner chamber and external chamber is coated with TOPECT standard color
● Self-diagnosis function alarm is used to identify and assist in fault finding & solving the problem
● Evaporation pressure regulating device for preventing the evaporator from icing during heat and humidity test
● Exhaust pressure regulating device for preventing overpressure during running of compressor
● Condensation pressure regulating device(water cooling type device used to adjust winter and summer environment)
● Door seal strip with unique thermal insulation function and testing holes are equipped to reduce condensation and frosting
● Drip tray is provided on the door is used to prevent water from dripping when the chamber door is open
● Earthing and current leakage protection
● Overload and short circuit protection
● Overheating protection of circulating fan
● Sound and light alarm and prompt function
● Anti-dry burn protection device for humidifier
●Auto tuning function of temperature and humidity from controller
● Phase sequence and phase failure protection device for general power supply
● Adjustable over-temperature protection device (over-temperature protection 1)
● Over-temperature control is provided in the controller (over-temperature protection 2)
● Screen locking function of controller
● Low pressure protection device for cooling water supply (Inlet)
● Over-temperature protection device is installed for air conditioning channel (over-temperature protection 2)
Optional Accessories
● Automatic pure water supply device for temperature-humidity test chamber(fig.1)
● Communication port and software for remote control and data transmission(fig.2)
● Air dryer
● Low humidity condition & super low humidity condition can be achieved (it can run for a long time; super low humidity at 5℃/5%RH)
● Lead hole of different specifications can be provided as per customer requirement (φ50，φ80，φ100，φ160，etc.)
● Temperature recorder (Recording of the temperature curve)
● Movable temperature sensor
● Customize the sample cart according to users’ needs
● Non-standard customized equipment can meet users’ demands
● Special load-bearing sample holder and the bottom plate
