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LBT-1115A Thermal Conductivity Test for Rigid Cellular Plastics (Guarded Hot Plate Method)

Name: LBT-1115A Thermal Conductivity Test for Rigid Cellular Plastics (Guarded Hot Plate Method)
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

A specialized device used to measure the thermal conductivity of insulation materials.

Category:

Geosynthetic Testing Equipment

Keywords:

E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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LBT-1115A Thermal Conductivity Test for Rigid Cellular Plastics (Guarded Hot Plate Method)

Description

Product Introduction:

Designed and manufactured in accordance with relevant standards such as GB/T 10294 and the “Test Procedures for Geosynthetic Materials in Highway Engineering” JTG 3460‑2026, this is a specialized instrument used to determine the thermal conductivity of insulation materials. Thermal conductivity (or thermal resistance) is one of the key thermal performance parameters of insulating materials and serves as the primary technical indicator for evaluating their insulation effectiveness. In recent years, with the introduction of building energy‑saving regulations, China has placed increasing emphasis on energy efficiency in construction. Consequently, accurate measurement of this parameter is essential and plays a crucial role in making informed material selection decisions.

Principle:

Under steady-state conditions, within the central measurement region of the guarded hot plate apparatus, a one-dimensional steady heat flow—similar to that existing in an infinitely large plane with two parallel isothermal surfaces—is established in a uniform, plate‑shaped specimen having parallel faces.

Product Features:

Metering Heating Unit:

An aluminum plate is used as the heating panel; owing to its high thermal conductivity, it ensures more uniform surface temperatures and lower thermal inertia, thereby enhancing the accuracy of measurement results.

Cold Plate Unit:

A constant-temperature water bath is used to regulate the temperatures of the two cold plates; the cold‑plate temperature is programmable and controlled automatically by a microcomputer, which helps maintain a uniform temperature difference between the two sides.

Protection Unit:

It employs the same panel material as the metered heating unit, enabling precise control of the temperature difference across the gap and reducing test errors.

External Protective Unit:

A protective sleeve made of cork is used as the outer shielding unit, stabilizing the experimental environmental conditions and thereby enhancing test accuracy.

Measurement system:

By employing the more stable U.S.-made Dallas DS18B20 digital temperature sensor and a high-precision DC power sensor, data acquisition accuracy is significantly enhanced.

Clamping System:

Employing pneumatic technology, the system uses a cylinder to automatically clamp the specimen, eliminating the need for manual adjustment of clamping force and ensuring extremely convenient specimen loading.

Refrigeration system:

It enables rapid cooling of the cold plate and measurements where the specimen’s average temperature remains below ambient, thereby expanding the measurement range and eliminating dependence on ambient temperature.

Reference standard:

“Determination of Steady-State Thermal Resistance and Related Properties of Thermal Insulation Materials—Guarded Hot Plate Method” (GB/T 10294-2008), GB/T 10294, “Test Procedures for Geosynthetic Materials in Highway Engineering”

Technical Specifications:

Parameter Category	Parameter content
External dimensions (length × width × height)	1020×650×1480(mm)
Specimen specifications	(Measurement) 150×150(mm) – (Protection) 300×300(mm)
Specimen thickness	10–45 mm (preferred thickness: 25 mm)
Thermal Conductivity Measurement Range	0.0010~2.0000 W/(m·K)
Cold plate temperature	3°C to 95°C (with antifreeze, can operate down to -10°C)
Hot plate temperature	≤120℃
Test accuracy	≤±3%
Test repeatability	≤±1%
Powered wear	3 kW, 220 V

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

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Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

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What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

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“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

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From Thomas Bennett, Quality Director, UK plastic pipe factory

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“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

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