Price of high and low temperature test phase

1、 The impact of core systems on prices

1. Refrigeration system - one of the main costs

Temperature range:

0 ℃~+150 ℃: Basic configuration, cost.

-20 ℃~+150 ℃: Single stage compression refrigeration is required, which increases the cost.

-40 ℃~+150 ℃: A cascade compression refrigeration system is usually required, which significantly increases the cost.

-70 ℃~+150 ℃ or lower: High performance cascade system is required, using higher power compressors and special refrigerants, resulting in the highest cost.

Compressor brand and type:

Imported brands (such as German Blog, French Taikang, and American Gulun) have higher compressor prices than domestic brands.

The price of semi enclosed compressors is higher than that of fully enclosed compressors.

The cost of a multi compressor parallel system is much higher than that of a single compressor system.

Condenser cooling method: Water cooled systems have complex structures and require supporting cooling water systems, which are usually more expensive than air-cooled systems.

2. Control system

Controller type:

The cost of a button based simple controller.

The cost of the color touch screen program controller is moderate.

The combination of "touch screen+PLC (programmable logic controller)" is a configuration with high precision and stability.

Control software functions: Software that supports advanced features such as multi segment programming, data recording, remote communication, USB export, etc. will increase costs.

3. Box structure and materials

Inner box size: The larger the volume, the higher the material cost, cooling and heating power requirements, and the price increases exponentially.

Material grade:

The inner box is equipped with SUS304 stainless steel as standard. If SUS316 stainless steel or mirror stainless steel is required, the cost will increase.

The outer box is made of stainless steel plate, which is more expensive than cold-rolled steel plate spray coating.

Insulation layer: Thicker insulation layers (such as 150mm better than 100mm) improve insulation effect, but will increase material and manufacturing costs.

Observation window: Standard sized single-layer or double-layer glass has lower cost. The cost of large multi-layer electric heating anti frost observation windows is high.

4. Heating system

A wider heating rate requires a higher power heater group and corresponding power control system, which will increase costs.

5. Options and Additional Features

Lead holes, sample racks, visual windows, recorders, communication software, network interfaces, etc. are all additional costs.

2、 The impact of main performance parameters on price

Temperature uniformity: The higher the requirements (such as ± 1.0 ℃ better than ± 2.0 ℃), the more demanding the requirements for air duct design, fan performance, and box insulation, and the higher the cost.

Temperature fluctuation: The higher the requirements (such as ± 0.3 ℃ being better than ± 0.5 ℃), the higher the precision requirements for the control system and sensors, resulting in increased costs.

Heating and cooling rate: Higher average or linear rates are required, requiring higher power refrigeration and heating systems, resulting in a sharp increase in cost.

3、 Price range reference (based on standard volume, such as around 100L)

Economic type (approximately RMB 10000-30000):

Temperature range: -20 ℃~+150 ℃

Single stage compression refrigeration, basic brand compressor.

Simple controller or basic program controller.

Basic temperature uniformity (such as ≤ 2.5 ℃).

Standard type (approximately RMB 30000 to 80000):

Temperature range: -40 ℃~+150 ℃ or -70 ℃~+150 ℃

Cascade compression refrigeration, imported brand compressor.

Color touch screen program controller with data recording function.

Good temperature uniformity (such as ≤ 2.0 ℃).

High performance type (approximately RMB 80000 to RMB 200000 or more):

Temperature range: -70 ℃~+180 ℃ or wider.

High performance cascade refrigeration system with multiple compressors in parallel.

Touch screen+PLC control system, high-precision PID regulation.

Excellent temperature uniformity (such as ≤ 1.5 ℃) and fluctuation (such as ≤ 0.3 ℃).

Customizable fast temperature change rate.

Comprehensive options and customized services.

4、 Suggestions for selection and price balance

Clear testing standards: Strictly determine the necessary temperature and humidity range, accuracy, and rate of change based on product testing specifications to avoid paying additional costs for excessive performance.

Evaluate core components: Pay attention to the brand and model of core components such as compressors and controllers, which directly affect the equipment's lifespan and long-term stability.

Considering long-term operating costs: Although an efficient refrigeration system and good insulation design require a high initial investment, they can significantly reduce long-term electricity expenses.

Manufacturer's technical strength: A manufacturer with independent research and development capabilities and a strict quality inspection system ensures product reliability and after-sales service, indirectly affecting the overall cost of ownership.