High and low temperature testing machine

The technical level of the high and low temperature testing machine is determined by the configuration of the refrigeration system, control accuracy, and structural design. The selection should comprehensively consider the temperature range, uniformity index, reliability requirements, and budget constraints to ensure that the equipment performance matches the testing requirements accurately.

1、 Core system composition

1. Structural system

Box material

Inner box: SUS304 stainless steel plate

Outer box: Cold rolled steel plate electrostatic spraying or SUS304 stainless steel

Insulation layer: high-density glass fiber cotton or polyurethane foam material, thickness ≥ 100mm

sealing design

Double layer silicone rubber sealing strip

Door buckle clamping device

Anti condensation electric heating observation window (multi-layer insulated glass)

2. Refrigeration system

Working mode: Mechanical compression refrigeration

Refrigeration cycle type

Single stage compression refrigeration (suitable for -20 ℃ to+150 ℃)

Cascade compression refrigeration (suitable for -40 ℃ to -80 ℃)

core component

Compressor: Semi closed/Fully closed type (brand: Taikang, Gulun, etc.)

Condenser: air-cooled/water-cooled

Evaporator: finned heat exchanger

Throttle device: thermal expansion valve/capillary tube

3. Heating system

Heating element: Nickel chromium alloy electric heating wire

Layout method: Grouping arrangement inside the air duct

Control method: Solid state relay PID regulation

4. Air circulation system

Fan type: Multi blade centrifugal fan

Drive mode: Long axis motor

Air duct design: vertical/horizontal circulation structure

5. Control system

Controller type

Programmable temperature controller

Touch screen+PLC combination

Control algorithm: PID control (with self-tuning function)

Programming function

Multi segment program settings (≥ 100 program segments)

Loop operation function

Slope control function

communication interface

RS-232/485

Ethernet

USB data export

2、 Main technical parameters

1. Temperature parameters

temperature range

Standard type: -40 ℃ to+150 ℃

Expansion type: -70 ℃ to+150 ℃

Temperature fluctuation: ≤± 0.5 ℃

Temperature uniformity: ≤ 2.0 ℃

Heating and cooling rate: 1 ℃~3 ℃/min (average rate)

2. Structural parameters

Content area range: 80L~1000L (standard series)

Internal dimensions: customized according to volume (W × D × H)

Load bearing capacity: ≥ 50kg (standard type)

3、 Performance indicators

1. Temperature performance

Stability: Continuous operation for 24 hours, fluctuation meets technical requirements

Uniformity: Temperature difference at each point in the workspace ≤ 2.0 ℃

Followeability: The deviation between the programmed curve and the actual curve is ≤± 2 ℃

2. Reliability indicators

Average time: ≥ 3000 hours

Compressor lifespan: ≥ 50000 hours

Continuous operation capability: ≥ 720 hours (full load)

3. Safety performance

Electrical protection

overload protection

earth leakage protection

short circuit protection

System Protection

Compressor overpressure/overheat protection

Heater overheat protection

Independent over temperature protector

Emergency protection

A fail-safe mechanism

Emergency stop button

4、 Manufacturing Standards and Inspection

1. Design standards

GB/T 10592-2008 Technical Conditions for High and Low Temperature Test Chambers

IEC 60068-2-1 "Environmental testing - Part 2: Test methods - Test A: Low temperature"

IEC 60068-2-2 "Environmental testing - Part 2: Test methods - Test B: High temperature"

2. Factory inspection items

Temperature deviation detection

Temperature fluctuation detection

Temperature uniformity detection

Verification of heating and cooling rate

Security protection function testing

Continuous operation test (≥ 72 hours)

5、 Key selection points

1. Basis for technical selection

Testing standard requirements

Sample size and weight

Temperature change rate requirement

Accuracy level requirements

2. Configuration selection

Compressor brand grade

Controller type

Cooling method (air-cooled/water-cooled)

Optional accessories (lead holes, recorders, etc.)

1、 Core system composition

1. Structural system

Box material

Inner box: SUS304 stainless steel plate

Outer box: Cold rolled steel plate electrostatic spraying or SUS304 stainless steel

Insulation layer: high-density glass fiber cotton or polyurethane foam material, thickness ≥ 100mm

sealing design

Double layer silicone rubber sealing strip

Door buckle clamping device

Anti condensation electric heating observation window (multi-layer insulated glass)

2. Refrigeration system

Working mode: Mechanical compression refrigeration

Refrigeration cycle type

Single stage compression refrigeration (suitable for -20 ℃ to+150 ℃)

Cascade compression refrigeration (suitable for -40 ℃ to -80 ℃)

core component

Compressor: Semi closed/Fully closed type (brand: Taikang, Gulun, etc.)

Condenser: air-cooled/water-cooled

Evaporator: finned heat exchanger

Throttle device: thermal expansion valve/capillary tube

3. Heating system

Heating element: Nickel chromium alloy electric heating wire

Layout method: Grouping arrangement inside the air duct

Control method: Solid state relay PID regulation

4. Air circulation system

Fan type: Multi blade centrifugal fan

Drive mode: Long axis motor

Air duct design: vertical/horizontal circulation structure

5. Control system

Controller type

Programmable temperature controller

Touch screen+PLC combination

Control algorithm: PID control (with self-tuning function)

Programming function

Multi segment program settings (≥ 100 program segments)

Loop operation function

Slope control function

communication interface

RS-232/485

Ethernet

USB data export

2、 Main technical parameters

1. Temperature parameters

temperature range

Standard type: -40 ℃ to+150 ℃

Expansion type: -70 ℃ to+150 ℃

Temperature fluctuation: ≤± 0.5 ℃

Temperature uniformity: ≤ 2.0 ℃

Heating and cooling rate: 1 ℃~3 ℃/min (average rate)

2. Structural parameters

Content area range: 80L~1000L (standard series)

Internal dimensions: customized according to volume (W × D × H)

Load bearing capacity: ≥ 50kg (standard type)

3、 Performance indicators

1. Temperature performance

Stability: Continuous operation for 24 hours, fluctuation meets technical requirements

Uniformity: Temperature difference at each point in the workspace ≤ 2.0 ℃

Followeability: The deviation between the programmed curve and the actual curve is ≤± 2 ℃

2. Reliability indicators

Average time: ≥ 3000 hours

Compressor lifespan: ≥ 50000 hours

Continuous operation capability: ≥ 720 hours (full load)

3. Safety performance

Electrical protection

overload protection

earth leakage protection

short circuit protection

System Protection

Compressor overpressure/overheat protection

Heater overheat protection

Independent over temperature protector

Emergency protection

A fail-safe mechanism

Emergency stop button

4、 Manufacturing Standards and Inspection

1. Design standards

GB/T 10592-2008 Technical Conditions for High and Low Temperature Test Chambers

IEC 60068-2-1 "Environmental testing - Part 2: Test methods - Test A: Low temperature"

IEC 60068-2-2 "Environmental testing - Part 2: Test methods - Test B: High temperature"

2. Factory inspection items

Temperature deviation detection

Temperature fluctuation detection

Temperature uniformity detection

Verification of heating and cooling rate

Security protection function testing

Continuous operation test (≥ 72 hours)

5、 Key selection points

1. Basis for technical selection

Testing standard requirements

Sample size and weight

Temperature change rate requirement

Accuracy level requirements

2. Configuration selection

Compressor brand grade

Controller type

Cooling method (air-cooled/water-cooled)

Optional accessories (lead holes, recorders, etc.)

Domestic high and low temperature test chambers, with their precise temperature control, wide temperature range, stable operating performance, and robust structural design, have become the core testing equipment supporting China's intelligent manufacturing and improving product quality. Choosing it means choosing a reliable and reassuring environment that provides a solid testing guarantee for your product to enter the market.

In the field of product quality control and reliability verification, environmental simulation testing is a crucial step. As a mature climate and environmental testing equipment, the domestically produced high and low temperature test chamber is designed specifically for evaluating the adaptability, reliability, and performance of products under high and low temperature conditions. It is widely used in many industries such as electrical and electronic engineering, automotive parts, aerospace, new materials, photovoltaic modules, communication equipment, etc. It is the core equipment of laboratories, research and development centers, and quality inspection departments.

1、 Product Overview and Application Fields

This series of high and low temperature test chambers adopts independent intellectual property technology, realizing the localization of core components and system integration, ensuring the stability and reliability of the equipment. Its core mission is to simulate harsh environmental conditions such as high temperature, low temperature, and rapid temperature changes that products may encounter during storage, transportation, and use, in order to detect potential defects in products in advance and provide scientific basis for improving product quality and durability.

Typical applications include but are not limited to:

Electronic electrician: High and low temperature performance assessment of PCB circuit boards, IC chips, connectors, and various electronic components.

Automotive industry: Cold and heat resistance tests for components such as headlights, instrument panels, sensors, battery modules, etc.

New material research and development: Physical and chemical property testing of composite materials, plastics, rubber, and metal materials under temperature changes.

Photovoltaic new energy: Environmental adaptability and life acceleration testing of photovoltaic modules (solar panels), inverters, and energy storage batteries.

Consumer electronics: Safety and reliability verification of mobile phones, computers, display screens, lithium batteries, etc.

2、 Technical parameters to meet diverse testing requirements

This device offers multiple specifications and models (such as TH series), supporting multiple capacity options from desktop to walk-in, and can be customized to meet the needs of different volume test samples.

Core performance indicators:

Temperature range: Wide up to -70 ℃~+150 ℃ (or can be customized with a wider range according to needs)

Heating/cooling rate: Excellent performance, under conventional specifications (+20 ℃ → -40 ℃) ≤ 60 minutes, (-40 ℃ →+100 ℃) ≤ 50 minutes (rate adjustable and customizable for rapid temperature change)

Temperature fluctuation: ≤± 0.5 ℃

Temperature uniformity: ≤± 2.0 ℃

Inner box material: Made of high-grade SUS304 stainless steel plate, corrosion-resistant and easy to clean.

Insulation layer: ultra-fine glass fiber cotton or polyurethane hard foam, efficient and energy-saving.

Observation window: Multi layer hollow electric heating anti frost glass window for clear observation of the test process.

3、 Core advantages and structural characteristics

Temperature control system:

Adopting a binary cascade refrigeration cycle system (for low temperatures below -40 ℃), consisting of high-quality domestic/joint venture compressors, paired with environmentally friendly refrigerants, it can intelligently switch between different temperature ranges for high efficiency and long service life.

The heating element adopts nickel chromium alloy electric heating wire, dust-free heating, safe and reliable.

Accurate and stable control technology:

Equipped with a full-color touch screen programmable controller, the interface is intuitive and easy to operate.

Programmable control, supports multiple temperature and time settings, easily completes complex cyclic testing.

Equipped with RS485 or RS232 communication interfaces, it can be connected to a computer for remote monitoring, data curve recording, and export, making it easy to trace and analyze.

Durable and sturdy structural design:

The box is made of high-quality cold-rolled steel plate sprayed with plastic or SUS304 stainless steel plate, with a beautiful and atmospheric appearance.

The internal structure layout is reasonable, the sample rack has strong load-bearing capacity, and the spacing can be adjusted according to needs.

The centrifugal fan is used to provide forced air circulation, and the matched air duct design ensures the high uniformity of temperature inside the box.

Comprehensive security measures:

Equipped with multiple safety measures: compressor overpressure, overheating, and overcurrent protection; Over temperature protection inside the box; Fan overheating protection; Leakage and short circuit protection, etc.

When the system malfunctions, the controller screen will immediately pop up an alarm message, indicating the cause of the malfunction and troubleshooting methods, ensuring the safety of the test and the safety of the operators.

4、 Perfect quality and service

We strictly follow relevant national standards (such as GB/T10592, GB/T10586), and implement a strict quality control system from research and development design to production assembly to ensure the performance and long-term stability of each factory equipment.

We offer:

Technical consultation and customized solutions: Based on your specific testing requirements, we provide professional technical advice and equipment selection plans.

Comprehensive after-sales service: including installation and debugging, operation training, regular maintenance, and quick spare parts response, to eliminate customers' worries.