High and low temperature laboratory

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Dongguan MENTEK Testing Equipment Co.,Ltd.
Address: Dongcheng District, Dongguan City,
Yu Wai Commercial Street, 77-78
Tel: +86 769-22687480
Fax: +86 769-22687476
E-mail: mentek05@126.com Phone: +86 18688681636
Contact: Mr. Guan
Web: en.dgmenteks.com

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Walk-in high and low temperature laboratory MHPW series

Features
Combination of walk-in constant temperature and humidity chamber for the industry to provide large parts, semi-finished products, temperature and humidity of the finished product testing, such as: computer terminals, auto parts. Constant temperature and humidity mainly by the control panel, distribution panels, insulation board, fan, heater, humidifier, freezer combination, the main specifications can be divided into four kinds of standard indoor size 24 different conditions test specifications.
Has a number of extensions
Can display SV, PV curve, free switch in English, outflow of the USB port can be directly connected to the printer to achieve the local data curve printing, no other computer convenient and quick. (Printers need to consider compatibility)
Without any converter, you can use the standard RJ45 network cable to connect the computer LAN, easy remote monitoring, support for simultaneous multi-machine control and management online. (Requires a computer with access)
Uniformity of temperature and humidity characteristics
The use of multi-wing blower strong air circulation, to avoid any dead ends, so that the indoor greenhouse evenly.
Complete security protection device
If the abnormal situation occurs, the control screen is automatically displayed on the fault state, cut off the power switch, and troubleshooting methods.
Uniformity of temperature and humidity characteristics
Ultra-low humidity range optional Optional chemical wheel adsorption dehumidification to ultra-low temperature and low humidity areas, such as the schematic diagram of the refrigeration system by the dehumidification (air temperature below the dew point evaporator, water precipitation) Chemical dehumidifier to help reduce humidity, such as 10 degrees 100% RH point. Selection of the world's leading brand of Montan wheel dehumidifier, reliable performance!

In summary

This equipment is suitable for all kinds of electrical and electronic products and other products, parts and materials for high and low temperature constant and gradual, abrupt change or damp heat test environment simulation reliability test. Mattel constant temperature and humidity in accordance with international GB / T10586-2009 and GB / T10592-2008 design and manufacturing.
Equipment to meet the following criteria:
GB/T2423.1-2008 Test A: Low temperature
GB/T2423.2-2008 Test B: High temperature (partial)
GB/T2423.3-2006 Test Cab Constant Damp Heat
GB/T2423.4-2008 Test Db: alternating hot and humid
GB/T2423.34-2012 Test Z / AD Test Z / AD: Temperature and humidity combinations or other equipment within the scope of the temperature and humidity test.
Chamber structure
The overall structure for the assembly, you can request the establishment of transitional and observation room.
The body of the library has high shock resistance, good corrosion resistance, deformation, re-installation, disintegration, construction convenience.
Sheet metal materials
Test box shell is spray galvanized color steel: inner box are SUS304 # stainless steel plate;
Insulation
Minimum 10CM rigid polyurethane foam plus glass wool insulation sandwich: the library board around the mining PARKIN combination to increase the airtight library plate, moisture-proof function, and P.U. foam density up to international standards, good insulation.
Library door
Double safety off the frozen door, to prevent accidents, to ensure that the safety of the library staff.
Test space supply air circulation
Mature air supply system - the use of high and low temperature multi-blade aluminum wind wheel driven by the motor side of the upper side of the wind under the venetian blinds. -60 ~ 100 ℃ within the uniformity of less than 2 ℃: (according to the international 10-point distribution)
Heating humidity system
Heater-chip alloy heating tube, long life.
Humidifier
(Humidification), humidification with the humidifying cylinder (boiler), quicker than traditional surface humidification (water tray), high control precision, no impurity contamination such as water quality in the box, low humidity and easy cleaning: the humidification pipe is made of stainless steel seamless Casing, insulation is greater than 50M, and has anti-dry controller.
Water consumption and energy saving
Standard RO pure water filter device real-time replenishment, no manual water; humidity three partitions Precise dehumidification control Save water, high temperature and humidity, such as 70 ℃ 85% RH point cooling dehumidification system OFF design, greatly reduce water.

Process Profile

Structure technology
1.Company hardware equipment Imports of German laser laser machine 1; Title of the AMADA AIRS-255NT punching and a Taiwan; Germany for all types of carbon dioxide welding machine and argon welding machine more than 10 Autodrsk inventor 3D graphics software, 3D sheet metal demolition and design of virtual assembly.
2.Shell made of high quality galvanized steel, electrostatic powder coating to be paint;
3.The inner box is made of imported SUS # 304 stainless steel, with full welding process to prevent leakage and penetration of high temperature and high humidity air inside the box; inner liner fillet design of inner box can better discharge condensate of side wall.

2.Shell made of high quality galvanized steel, electrostatic powder coating to be paint;
3.The inner box is made of imported SUS # 304 stainless steel, with full welding process to prevent leakage and penetration of high temperature and high humidity air inside the box; inner liner fillet design of inner box can better discharge condensate of side wall.

Refrigeration series of technology
1.standardization
1.1 High-quality steel pipe and welding process standardization; according to the standard tube layout to ensure stable and reliable model system;
1.2 Imports of Italian imports of pipe bending machine the whole bend, a significant reduction in solder joints and welding generated when the pipe oxide, improve system reliability!

2.Pipeline shock and support
2.1 The United States and Tyco on the support of the cooling copper pipe has strict requirements, taking into account the pipeline shock conditions in the cooling pipe to increase the arc and bending the use of special nylon clip fixed way to avoid the circular vibration and temperature changes caused by Pipe deformation and leakage, improve the reliability of the entire refrigeration system.
2.2 No oxidation welding process
As we all know, the cleanliness of the refrigeration system is directly related to the efficiency of the refrigeration system and operating life; the United States and Tyco welding operation using standardized to avoid a large number of pipe oxide pollution when welding!

Control circuit technology
1. Power distribution layout According to the technical department of the distribution assembly plans to install electrical components used internationally renowned brands: Omron, Schneider, Germany phoenix terminals, line code clearly marked.
Selection of the old domestic brand, (Zhujiang cable) to ensure that the quality of the wire; control line minimum 0.75 square RV soft copper wire, all the major load such as motor compressors are based on EC trunking safety current standard trapping trail selection! Compressor cable box cable mouth with sealant processing, to prevent frosting junction box terminal short circuit.
All terminal screws are connected to the standard fixed torque, to ensure reliable fastening to prevent loose ignition and other hidden dangers!

Refrigeration Technology
3D refrigeration system management drawing
Variable Frequency Control Technology of Refrigeration System

In the frequency conversion refrigeration system, even if the power frequency 50HZ is fixed, can change the
frequency through the frequency changer, thus adjusts the compression rotational speed, causes the cold quantity
continuously to change, guarantees the compressor movement load in the test box the actual load to match (namely
test body temperature Increase, the compressor frequency to rise, improve the cooling capacity, on the contrary, the
compressor frequency to reduce and reduce the cooling capacity) greatly saves the unnecessary loss of operation to achieve energy-saving purposes. In the beginning of the test chamber can also run by increasing the frequency of the compressor to improve the capacity of the cooling system to achieve the purpose of rapid cooling.
The chamber adopts frequency conversion refrigeration system, which can precisely control the temperature of the box body, make the temperature of the box body constant, the temperature fluctuation is small, and the suction and discharge pressure of the refrigeration system is stable and the compressor runs stably and reliably. Electronic expansion flow servo.

Refrigeration system technology Other energy - saving technologies
A) The use of PID + PWM principle VRF technology (electronic expansion valve according to the thermal conditions of flow control)
Low-temperature working state, the heater does not participate in the work, through the PID + PWM regulation of the cooling (cooling capacity of the air flow control system); low-temperature working conditions, the use of the principle of PID PID VRF technology (refrigerant flow control) Flow rate and flow direction of the cooling pipe, cold side of the pipeline, heat the next three-way flow pipe to adjust to achieve the work of the temperature is automatically constant, this method in low temperature conditions, the studio can automatically achieve a constant temperature, Low temperature conditions, can achieve a 30% reduction in energy consumption. The technology is based on Danfoss ETS system electronic expansion valve, can be applied to different cooling capacity requirements of the cooling adjustment, both at different cooling rate requirements, to achieve the compressor cooling capacity adjustment.
B) the size of two sets of compressor design technology, according to load conditions automatically start and stop (large series is designed)
The refrigeration unit is equipped with a set of semi-hermetic compressors composed of binary cascade refrigeration system plus a full-density single-stage refrigeration system. Configure the mother; according to the load conditions inside the box and the cooling rate of intelligence to open the different compressor groups, so that the cooling capacity of the box and the compressor output power to achieve the best match, in order to achieve the best operating conditions in the compressor section circle to Extend the service life of the compressor. More importantly, a large set of traditional design compared to the energy-saving effect is very obvious, you can achieve more than 30% of the temperature control. With VRF technology)

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