Lb-DX3B Refractory Material Thermal Conductivity Tester Using the Hot-Wire Method (Parallel-Line Technique)
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Description
Product Introduction:
The Lb-DX3B thermal conductivity meter for refractory materials employs the transient hot‑wire method, including both the cross‑wire and parallel‑wire techniques, to measure the thermal conductivity, thermal diffusivity, and specific heat capacity of solid and powdered materials over a range of temperatures. It features high accuracy, high resolution, and excellent reproducibility, with automated measurements controlled by a computer. This instrument is widely used in research institutions, quality‑control laboratories, and industrial facilities for determining the thermal properties of materials, offering improved measurement precision and repeatability, a more rational design, and enhanced ease of use.
Reference standard:
GB/T 17106 “Test Method for Thermal Conductivity of Refractory Materials (Parallel-Line Method)”;
Technical Specifications:
| Parameter Category | Parameter content |
| Measurement range | 0.015~25.0 W/(m·K) (parallel-line method) |
| Temperature range | Routine testing: room temperature; Optional accessories are available to extend the test temperature range (additional charges apply). -40 to 120 °C (with a high-low temperature constant‑temperature chamber), equipped with a copper–constantan hot wire. Room temperature to 1000 °C (with a resistance‑wire furnace), equipped with nickel‑chromium–nickel‑silicon or platinum–platinum‑rhodium thermocouples. Room temperature to 1300 °C (with a silicon-carbide rod resistance furnace), equipped with a platinum–platinum‑rhodium thermocouple. Room temperature to 1600 °C (with a silicon‑molybdenum rod resistance furnace), equipped with a platinum–platinum‑rhodium thermocouple. |
| Measurement accuracy | <±5.0 % |
| Specimen dimensions | Two rectangular prisms, each measuring no less than 40 mm × 80 mm × 114 mm and symmetrically arranged; or two semicylindrical sections, each with a cross-sectional diameter of at least 80 mm and a length of at least 114 mm, stacked together to form a cylinder. Recommended standard brick dimensions: 230 mm × 110 mm × 65 mm or 230 mm × 110 mm × 75 mm (custom sizes available upon request). |
| Temperature resolution | 0.001℃ |
| Hotline power supply | Current resolution: 0.1 mA; Voltage resolution: 0.1 mV. |
| Equipment Power Supply | Voltage: 220 V; Frequency: 50 Hz; Power: 500 W (For power supply requirements of the electric furnace temperature controller, refer to the controller’s instruction manual.) |
Instrument Configuration
1. One testing host for the Lb-DX3B refractory material thermal conductivity meter using the hot‑wire method,
2. One copy of the software,
3. One set of communication interface and data cable,
4. One desktop computer,
5. One set of room-temperature test leads.
In addition, the constant-temperature unit and high-temperature heating cable are optional features and will be configured in accordance with the contract.
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Lb-DX3B Refractory Material Thermal Conductivity Tester Using the Hot-Wire Method (Parallel-Line Technique)
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