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Raw Sand Specific Surface Area Tester For Determining Specific Surface Area
| Place of Origin | CHINA |
|---|---|
| Brand Name | MORITA |
| Model Number | QR-SMT |
| Minimum Order Quantity | 1 |
| Delivery Time | 15 days |
| Payment Terms | T/T |
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xProduct Details
| Warranty | 1 Year | Display Type | LCD |
|---|---|---|---|
| Accuracy | +/- 0.5 PSI | Repeatability | Measure The Same Sand Sample, And The Difference Between The Larger And Smallest Values Of The Ten Measurements Of Ventilation Time Should Not Exceed 0.5 Seconds |
| Measurement Range | 0.001-0.1 ㎡/g | ||
| Highlight | surface resistivity tester,LCD Display surface resistivity tester,LCD Display surface resistance tester |
||
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| Measurement range: | 0.001-0.1 ㎡/g | |
|---|---|---|
| Timing range | 0-99.9s | |
| Power supply: | 220V ± 10% 50Hz | |
| Pipeline sealing: | The liquid level drops by no more than 5mm within 10 minutes | |
| Repeatability: | Measure the same sand sample, and the difference between the larger and smallest values of the ten measurements of ventilation time should not exceed 0.5 seconds |
Product Description
Raw Sand Specific Surface Area Tester QR-SMT
Product Overview
The Specific Surface Area (SSA) Tester measures the total surface area per unit mass of material, including both external and internal surface areas, with results expressed in square meters per gram (m²/g) according to national standards. This instrument utilizes the ventilation method principle to determine the time (t) required for air to pass through a sand column, then calculates the actual specific surface area of casting silicon sand samples using a precise formula.
Designed for compliance with GB/T 9442-1998 standard "Silicon Sand for Casting" and Appendix B, this tester accurately measures porosity and specific surface area of casting silicon sand (both raw and recycled). It features:
- High-precision SM timing instrument with 999-second/99-millisecond capacity
- Highly sensitive infrared sensors with strong anti-interference capability
- Automated control system for one-click measurement completion
Instrument Structure and Working Principle
Figure 1: Instrument Structure
Figure 2: Working Principle
The testing process involves:
- Removing mud from raw sand through strong washing and drying
- Weighing 50±0.01g sample into a graduated test tube
- Tapping until sand volume stabilizes and recording dimensions
- Automated measurement of air passage time through infrared sensors
- Calculating specific surface area from average of multiple tests
Technical Specifications
Measurement Range:
0.001-0.1 m²/g
Timing Range:
0-99.9 seconds
Power Supply:
220V ±10% 50Hz
Pipeline Sealing:
≤5mm liquid level drop in 10 minutes
Repeatability:
≤0.5s difference between extreme values in 10 tests
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