Three Comprehensive Environmental Testing Chamber Vibration Temperature Humidity Three-Combination Vibration Tester

• Customization: Available
• After-sales Service: Support Operation Guidance
• Power Supply: 380V
• Model NO.: MVTH
• Certification: CE
• Warranty: 1 Year
• City: Dongguan, Guangdong
• Uses: Temperature Humidity Vibration Testing Machine
• Purpose: Environment Variation Testing Chamber
• Volumn of Inner Box: 500-1000L
• Transport Package: Wooden Box
• Specification: 80*80*78cm
• Trademark: MENTEK
• Origin: China
• HS Code: 9031809090
• Production Capacity: 1000PCS/1year

Product Description

Three Comprehensive Environmental Testing Chamber Vibration Temperature Humidity Three-combination Vibration Tester

Product Description

Product Features
1. Equipped with a lifting platform and an electric sliding rail, the equipment can be moved up, down, left and right to cooperate with the vibration table test.
2. Equipped with three movable bottom plates, which are easy to replace to meet the requirements of different test conditions. The heating and cooling rate can be customized as required.



Main Parameters

Model			MVTH-500		MVTH-1000		MVTH-500				MVTH-1000		MVTH-500		MVTH-1000
Volumn (L)			500		1000		500				1000		500		1000
Temperature range			-40+150/-70+150ºC
Humidity range			20%+98%RH
Temperature fluctuation			±0.5ºC
Temperature deviation			±2.0ºC
Humidity deviation			±3.0%RH(>75%RH)±5%RH(≥75%RH)
Temperature		range	-55ºC+85ºC
Speed		speed	5ºC/min					10ºC/min					15ºC/min
		load	500 model: 15kg aluminum ingot								100 model: 30kg aluminum ingot
Inner size (cm)		width	80		100			80			100		80		100
		height	80		100			80			100		80		100
		depth	78		100			78			100		78		100
Outer size (cm)		width	180		200			180			200		180		200
		height	190		210			190			210		190		210
		depth	135		155			135			155		135		155
Temperature and humidity regulation method			BTHC
Environmental temperature for use			+5ºC+35ºC
Material	Casing		High strength cold-rolled steel plate double-sided fine powder baking paint
	Inner wall		SUS # 304 Stainless Steel 2B Panel
	Thermal insulation material		Glass fiber+polyurethane foam
Modifier	Heater		Nickel chromium alloy electric wire heater
	Humidifier		Stainless steel armored heater
	Fan		centrifugal fan
	Compressor		Fully enclosed compressors imported from France or semi enclosed compressors imported from Germany
	Refrigerant		R404A/R23
	Cooling method		Mechanical compression cascade refrigeration (air-cooled/water-cooled)
	Controller		Original Japanese imported TFT touch screen
	Operation mode		Fixed value method, program method
	Program capacity		120 sets of programs*1000 segments (can be divided and looped 1000 times), the required number of segments for each set of programs can be arbitrarily divided, and each set of programs can be freely connected to each other (up to 200 connections)
	Setting range		Temperature: Adjust according to the working range of the device's temperature (upper limit+5ºC, offline -5ºC) Humidity: 25% -100%RH (the device is designed for humidity)
	Input		Thermocouple
	Communication		(Optional) RS-485 interface, with local and remote communication functions (requires centralized monitoring software, RS-485/RS-232 converter, and occupies one COM port and one USB port of the PC); Up to 16 devices can be connected simultaneously, with a maximum cumulative cable length of 800mOC. Software usage environment: IBM PC compatible machine, CPU with P∥or above, 128MB or above memory, Simplified Chinese WINDOWSXP operating system
	Contro method		Anti integral saturation PID
	Data acquisition		1. Screen interface curve output - directly save the curve interface on the touch screen or any interface requested by the customer as a*BMP image and save it to a USB flash drive, or directly print the curve interface on the touch screen or any interface requested by the customer (requiring interface software modification) with a printer; 2. USB function - equipped with 1 IGU drive. Insert the USB flash drive into the USB interface of the controller during the experiment. The experimental data will be automatically recorded on a USB drive and saved as*CSV data files (not curve graphs), and the sampling period can be set on the screen. Open and process using software such as EXCEL; 3. Printer connection (optional): - Configure the printer to print the test date, set temperature, set humidity, and measured temperature by setting the printing frequency according to time. 4. Connected to PC (optional): - Through centralized monitoring software, test data can be recorded and automatically displayed as curves on the PC, which can be directly printed and recorded for unlimited time. The file size depends on the hard drive capacity. PC can also serve as a terminal for remote monitoring.
	Auxiliary functions		Fault alarm and cause, processing prompt function: power-off protection function: upper and lower limit protection function: timed function (automatic start and automatic stop operation)
	Water supply method		Pump lifting
	Water storage tank		25L
	water quality		Resistivity>500Ω
	Power		AC380(1±10%)V(50±500%)Hz Three-phase four-wire
	Maximum current		16	19		31			40	58		44		67		108
	Power(kW)		10	20		20			26	38		29		44		71
	Weight(kg)		485	795		585			720	895		640		770		950
	Standard configuration		1 electric heating film glass observation window, 2 cable holes (50), 2 sets of sample racks, 1 lighting lamp (fluorescent lamp), 4 casters, and 1 sample power control terminal
	Security configuration		Leakage circuit breaker, fan overheating protection, compressor overpressure, overheating, phase sequence protection, overtemperature protection, temperature fuse, dry burn protection, etc

Note: Support customization

 Structural technology

Structural Process
1. Company's Hardware Equipment:
1 imported German laser machine; 1 Amada AIRS - 255NT punching machine from Japan; more than 10 German carbon dioxide welding machines and argon arc welding machines. We use Autodesk Inventor 3D drawing software for 3D sheet metal disassembly drawing and virtual assembly design.

2. The outer shell is made of high - quality galvanized steel plates and finished with electrostatic powder spraying and baking paint.

3. The inner chamber is made of imported SUS#304 stainless steel and adopts the argon arc full - penetration welding process to prevent the leakage and penetration of high - temperature and high - humidity air inside the chamber. The rounded - corner design of the inner chamber liner can better drain the condensate water on the side walls.

Refrigeration System Technology
1. 3D Refrigeration System Management Drawing.

2. Frequency Conversion Control Technology of the Refrigeration System: In the frequency conversion refrigeration system, even if the power supply frequency of 50Hz is fixed, the frequency can be changed through the frequency converter, thereby adjusting the rotational speed of the compressor, and making the cooling capacity change continuously. This ensures that the operating load of the compressor matches the actual load inside the test chamber (that is, when the temperature inside the test body rises, the frequency of the compressor increases to enhance the cooling capacity; conversely, when the temperature drops, the frequency of the compressor decreases to reduce the cooling capacity). This greatly saves unnecessary losses during operation and achieves the goal of energy conservation. At the beginning of the operation of the test chamber, the frequency of the compressor can also be increased to enhance the capacity of the refrigeration system and achieve the purpose of rapid cooling. The test chamber adopts a frequency conversion refrigeration system, which can accurately control the temperature inside the chamber, keep the temperature inside the chamber constant with small temperature fluctuations. At the same time, it can also ensure the stable suction and discharge pressures of the refrigeration system, making the operation of the compressor more stable and reliable. Electronic Expansion Flow Servo. 

Refrigeration system technology and other energy-saving technologies
1. VRF technology based on the principle of PID + PWM (the electronic expansion valve controls the refrigerant flow according to the thermal energy working conditions) is adopted. The VRF technology based on the principle of PID + PWM (refrigerant flow control) enables energy-saving operation at low temperatures (the electronic expansion valve controls the refrigerant flow servo according to the thermal energy working conditions). In the low-temperature working state, the heater does not participate in the operation. By adjusting the refrigerant flow and direction through PID + PWM, and regulating the three-way flow of the refrigeration pipeline, the cold bypass pipeline, and the hot bypass pipeline, the temperature of the working chamber can be automatically kept constant. In this way, under low-temperature working conditions, the temperature of the working chamber can be automatically stabilized, and the energy consumption can be reduced by 30%. This technology is based on the ETS system electronic expansion valve of the Danish company Dan-foss and can be applied to adjust the refrigeration capacity according to different requirements for refrigeration capacity. That is, it can realize the adjustment of the refrigeration capacity of the compressor when different cooling rate requirements are met.

2. The technology of grouped design of two sets of compressors (large and small) can automatically start and stop according to the load working conditions (large series design). The refrigeration unit is configured with a binary cascade refrigeration system composed of a set of semi-hermetic compressors and a set of fully hermetic single-stage refrigeration systems. The purpose of the configuration is to intelligently start different compressor units according to the load working conditions inside the chamber and the requirements for the cooling rate, so as to achieve the best matching between the refrigeration capacity working conditions inside the chamber and the output power of the compressor. In this way, the compressor can operate in the best working condition range, which can extend the service life of the compressor. More importantly, compared with the traditional design of a single large set, the energy-saving effect is very obvious, and it can reach more than 30% (cooperating with the VRF technology during short-time constant temperature control).

Refrigeration circuit technology

The electrical components shall be installed according to the power distribution assembly drawings issued by the Technology Department during the power distribution layout operation.

Internationally renowned brands shall be selected: Omron, Sch-neider, and German Phoenix terminal blocks.

The wire codes shall be clearly marked. A time-honored domestic brand (Pearl River Cable) shall be selected to ensure the quality of the wires. For the control circuit, the minimum size of the selected wire is 0.75 square millimeter RV soft copper wire. For all main loads such as the motor compressor, the wire diameter shall be selected in accordance with the safety current standard for wiring in the EC wire trough.
The cable openings of the compressor terminal box shall be treated with sealant to prevent the terminals in the terminal box from short-circuiting due to frosting.

All the fixing screws of the terminals shall be tightened with the standard fixing torque to ensure reliable fastening and prevent potential hazards such as loosening and arcing. 

Refrigeration series process
1. Standardization

1.1 Standardization of the piping process and welding of high-quality steel pipes; The piping layout shall be carried out in accordance with the standards to ensure the stable and reliable operation of the machine model system.

1.2 The steel pipes are bent in one piece by an imported Italian pipe bender, which greatly reduces the number of welding points and the internal pipe oxides generated during welding, and improves the reliability of the system!

2. Pipe Shock Absorption and Support

2.1 MENTEK has strict requirements for the shock absorption and support of the refrigeration copper pipes. Taking full account of the shock absorption situation of the pipes, circular arc bends are added to the refrigeration pipes, and special nylon fixing clamps are used for installation. This avoids the pipe deformation and leakage caused by circular vibration and temperature changes, and improves the reliability of the entire refrigeration system.

2.2 Oxidation-free Welding Process As is well known, the cleanliness inside the pipes of the refrigeration system is directly related to the efficiency and service life of the refrigeration system. MENTEK adopts standardized gas-filled welding operation to avoid a large amount of oxide contamination generated inside the pipes during welding.

 

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