Supplier of desktop constant temperature and humidity test chamber

Technical scheme for desktop constant temperature and humidity test chamber

Table type constant temperature and humidity test chamber selected by Shanghai Qingsheng

1Main technical parameter indicators (this performance indicator is at an ambient temperature of)+Measurement at 5 ℃ to+30 ℃:

IISystem Introduction

This series of environmental test chambers can provide a simulated environment for users to inspect and test electronic and electrical components, components, or testing departments in related industries, providing * conditions for the accuracy and consistency (repeatability) of test data. This product features a convenient measuring device, temperature controller, and a touch screen display in both Chinese and English. It can be used for various complex program settings, and the program settings are done through dialogue, making the operation simple and fast. It can achieve automatic operation of the refrigeration machine, reduce the working time of operators, and automatically start, stop, and operate at any time. The work of each system (fan, cooling, heating) is centrally controlled by the touch screen human-machine interface. Non standard large-scale equipment can be assembled as a whole at the customer's end, with convenient transportation and placement, and on-site debugging and acceptance at the customer's end to ensure its performance; Scientific air circulation design ensures uniform indoor temperature and avoids any dead corners; A complete safety protection device avoids any potential safety hazards and ensures the long-term reliability of the equipment; Each product can be customized according to customer requirements, ensuring the efficiency, energy saving, and reliability of the equipment.

1.1 Heating system

1.1.1 Heating adopts heating wire heating, and the actuator adopts solid-state relay.

1.2 Control System

1.2.1 Setting method: Touch, click

1.2.2 Display mode: Color LCD backlit touch screen with Chinese and English display, switchable.

1.2.3 Setting and Display Resolution: Temperature 0.01 ℃, Time 1min

1.2.4 Graphic display: Fully display the set program curve and real-time monitoring curve.

1.2.5 Setting parameter storage time: After fully charged, data can be saved for 5 years.

1.2.6 Number of Programs: 1-100 (maximum of 100 programs).

1.2.7 Program segment: The 1st to 100th segments of the program can be connected and run in groups.

1.2.8 Can automatically prompt users to correctly set temperature, time parameters, etc.

1.2.9 It has a temperature program dynamic maintenance function.

1.2.10 Temperature correction: It has the function of self correcting temperature reference points.

1.2.11 has the function of waiting for program execution.

1.2.12 has program skip function.

1.2.13 has a program stop function.

1.2.14 has a power-off recovery function.

1.2.15 Control modes: constant temperature, slope, constant value, program.

1.2.16 has a locking function for the operating interface. Recording function: It can record curves and experimental data for 360 days, and can query the temperature and humidity situation at every moment during 360 days in detail. It can print recording curves and generate data reports on a PC (equivalent to the function of a paperless recorder), and has a startup fault alarm function.

1.2.17 Computer Monitoring System: The control system can achieve data transmission and monitoring functions through computer Ethernet or wireless network communication interfaces. Note: Free software will be provided in the future

Table type constant temperature and humidity test chamber selected by Shanghai Qingsheng

1.3 Refrigeration System

1.3.1 System concept: This type of experimental model adopts the industry's temperature balance technology (single-stage automatic cascade system), which uses two different refrigerants and different evaporation temperatures to change the cooling effect of the refrigerant through an electromagnetic valve, thereby achieving the ideal low temperature for single-stage automatic cascade refrigeration and truly realizing the refrigeration of a single compressor.

1.3.2 Compared to the previous method of using two-stage cascade refrigeration for temperatures below -35 ℃, the energy consumption is very high and the noise from both compressors is also high. The application of this technology can minimize customers' operating costs and extend the lifespan of compressors to the greatest extent possible, saving electricity costs throughout the equipment lifecycle.

1.3.3 Refrigeration compressor: The refrigeration cycle system is composed of a French imported "Taikang" fully enclosed compressor.

1.3.4 Refrigerant: Use environmentally friendly refrigerants R404a and R23 (excluding CFCs) that are not prohibited by the Montreal Convention, London Amendment, or new US Environmental Protection Agency laws.

1.3.5 Refrigeration evaporator: A corrugated fin refrigeration evaporator is used, located in the air duct interlayer at one end of the test chamber, and is forced to ventilate by a blower motor for rapid heat exchange.

1.3.6 Auxiliary components: We also use imported components for other auxiliary components in the refrigeration system of this test chamber, such as solenoid valves, filters, etc; If using Italian CASTEL solenoid valves, bypass valves, check valves, etc., other accessories also use domestic * brand refrigeration accessories.

1.3.7 Low temperature pipeline: High quality oxygen free copper pipes and nitrogen filled welding are used for low-temperature pipelines (traditional methods use ordinary copper pipes, and direct welding methods can easily cause oxides to form on the inner wall of the copper pipes, causing blockages in the refrigeration system and preventing or slowing down the cooling of the test chamber).

1.3.8 A condensate drain pan is installed at the bottom of the refrigeration system and discharged outside the box.

1.3.9 Vibration reduction: Adopt compressor rubber pads and spring vibration reduction measures; The refrigeration system pipeline adopts the method of adding R and elbows to avoid the deformation of copper pipes caused by vibration and temperature changes, which may cause the refrigeration system pipeline to rupture.

1.4 Air duct system

To ensure a high uniformity index, the test chamber is equipped with an internal circulating air supply system and air ducts. Inside the air duct interlayer at one end of the studio, heaters, refrigeration evaporators, and fan blade devices are distributed. Multiple fans are used to circulate the air inside the box. When the fans are running, the air in the working chamber is sucked into the air duct from the lower part, heated or cooled, and blown out from the homogenizer. The air exchanged with the test sample in the working chamber is then sucked into the air duct and repeatedly circulated to meet the temperature and humidity setting requirements.

3、 Installation requirements:

2.1 Power Requirements:

2.1.1 Power Supply: AC220V ±10% 50Hz

2.1.2 Maximum power:2.5KW

2.1.3 Maximum current:10A

2.1.4 Air switch capacity:16A

2.2 Installation site requirements: The distance from the back of the test box to the wall shall not be less than500mm， The left and right rear sides must not be less than 700mm. The user must provide an independent distribution cabinet switch and be responsible for the external power connection of the equipment.

4Delivery test items

3.1.1 Technical data: Provide Chinese equipment pre use instructions and instrument manuals.

3.1.2 Two test box test grids.

5after-sales service

4.1.1Professional pre-sales service: We provide diverse and professional reference opinions for your equipment selection, and offer technical consultation or on-site explanations according to your requirements;

4.1.2 Professional in sales service: After the equipment arrives, free on-site installation and debugging will be provided according to the agreed time between both parties; Free installation and operation training services and technical support are provided, with no limit on the number of trainees until the church. Training content: a Working principle of the test chamber, b Product application, c Correct operation process of temperature and humidity in the test chamber, d Precautions during operation, e Common problem solutions

4.1.3 Solid after-sales guarantee: During the product warranty period, we provide free maintenance for equipment failures. After reporting the repair, we will rush to the equipment site for inspection within 12 hours and repair the equipment within 24 hours (except for special circumstances);

4.1.4 After the warranty period, our maintenance services only charge for component fees and labor costs.

4.1.5 Regularly conduct follow-up visits on user device usage to promptly resolve any doubts or issues encountered by customers during use, while tracking the relevant situation of the device.