Dilatometers For Linear Thermal Expansion

Details:

• For Determination of Linear Thermal Expansion Characteristics of Refractory, Ceramic and Similar Materials. Complies with or is suitable for testing in accordance with: ASTM E228, ASTM E831, ASTM C372, ASTM C326, ASTM C531, ASTM C878, ISO 11359-2, ISO 17562, ISO 7991, ISO 10545-8, JIS R1618, DIN 51045, DIN 52324, EN 821-1

Applications:

• The Computerized Dilatometer is designed for precise measurement of the linear expansion and contraction of materials as a function of temperature. It is suitable for testing refractory products, ceramics, glass, minerals, building materials, metals, and other engineering materials for quality control, research, and product development.

Technical Specifications:

Furnace Assembly:

1. Compact floor/bench-mounted design with approximate dimensions of 250 × 1000 × 300 mm.
2. Heavy-duty double-wall mild steel construction with precision fabrication, durable powder-coated finish, and corrosion-resistant exterior.
3. High-efficiency low thermal mass zirconia blend fibre board insulation ensures excellent thermal stability, fast heating response, and reduced heat loss.
4. Furnace mounted on precision linear bearing wheels with stainless steel guide rails, enabling smooth movement and accurate positioning during specimen loading and testing.

Heating System:

1. High-performance single-end Silicon Carbide (SiC) heating element provides uniform and reliable heating.
2. Operates on 230 V AC, Single Phase, 50 Hz, with approximately 5 A current consumption.
3. Maximum Operating Temperature: 1000°C
4. Optimized furnace design ensures excellent temperature uniformity throughout the heating zone.

Temperature Control System:

• Advanced PID Programmable Digital Temperature Controller with K-Type Thermocouple for accurate temperature regulation.
• Temperature Control Accuracy: ±1°C
• Separate independent over-temperature safety controller with air-break magnetic contactor protects the furnace in the event of thyristor malfunction or overheating.
• Phase-angle controlled Thyristor power regulator with isolation transformer provides smooth and precise heating control.
• Front panel indications include:
• Digital AmmeterDigital Voltmeter
• Mains Power Indicator
• Heating Output Indicator
• Independent switches provided for:
• Main Power
• Heating Output
• Complete electrical protection through dedicated input and output fuse protection.

Linear Expansion Measurement System:

• High-precision LVDT (Linear Variable Differential Transformer) based displacement measurement system.
• Measurement Resolution/Accuracy: 1 Micron
• Measurement Range: 0 to 2000 Microns
• Real-time expansion values displayed on both the digital display and computer interface.
• Data acquisition and graphical analysis through dedicated LABVIEW-based software.
• Software features include:
• Real-time displacement vs. temperature plotting
• Automatic data logging
• Test report generation
• Graphical analysis
• Data export for further processing
• Compatible with Windows-based PC.

Specimen Specifications:

• Recommended specimen size:
• 10 × 10 × 45 mm (±2 mm)
• Sample holder tube and measuring probe manufactured from high-purity fused quartz for excellent dimensional stability at elevated temperatures.

Calibration:

The instrument is supplied with calibration certificates for:

• LVDT (Linear Expansion Measurement)
• Temperature Measurement (Thermocouple)

Calibration is traceable to national/international standards.

Electrical Requirements:

• Power Supply: 230 V AC, Single Phase, 50 Hz
• Connected Load: Approximately 5 A

Standard Supply:

1. Standard Supply
2. Silicon Carbide Heating Element
3. Quartz Sample Tube
4. Quartz Probe Assembly
5. LVDT Measuring System
6. PID Temperature Controller
7. Thermocouple
8. LABVIEW-Based Operating Software
9. Power and Interface Cables
10. User Manual
11. Calibration Certificates

Optional Accessories (Available at Extra Cost):

1. Desktop Computer with Intel® Core™ i5 or i3 Processor, minimum 4 GB RAM (or latest equivalent configuration)
2. Printer for report generation
3. UPS (Uninterruptible Power Supply)
4. Additional fused quartz sample tubes
5. Spare fused quartz probes
6. Spare Silicon Carbide heating elements
7. Additional thermocouples
8. Annual calibration and preventive maintenance services
9. Software upgrades and extended warranty packages