Red Line Gauge Glass is a crucial component in industrial applications where precise liquid level measurement is required. Manufactured from high-quality borosilicate glass, this type of gauge glass features a distinct red line embedded within, enhancing visibility and accuracy in reading fluid levels. It is widely used in boilers, tanks, and other pressurized systems where monitoring liquid levels is essential for safety and efficiency.
Redline Borosilicate Tube is composed of borosilicate glass, known for its exceptional thermal resistance and mechanical strength. The key properties of borosilicate glass include:
The defining characteristic of Redline Tubular Gauge Glass is the embedded red line, which improves visibility by creating a contrast against the liquid inside the tube. This feature is particularly useful in environments with low lighting or where quick level assessment is necessary.
RED LINE
The Red Line Tube: used in level gauge glasses is a specialized feature designed to enhance the visibility of fluid levels in a broad range of industrial applications.
This tube incorporates a distinct red & white lines that run along its length, providing a stark contrast against the color of the fluid or the background, making it easier to read levels at a glance. Particularly useful in environments with poor lighting or where fluids are clear or have low visibility, the red line aids in precise level determination, reducing reading errors and improving operational safety.
| Property | Testing method | Obtained value |
|---|---|---|
| Thermic dilatation coefficient | ISO 7991 | 3.3 × 10⁻⁶ |
| Density at 25°C | SN 7005 13 | 2.23 g/cm³ |
| Refractive index (λ = 587.6 nm) nd | — | 1.472 |
| Maximum annealing temperature | ISO 7884-8 | 1040 ºF |
| Short-term maximum temperature | ISO 7884-7 | 932 ºF |
| Thermal shock resistance | ISO 7884-4 | 5.67 ºF |
| Young's modulus | — | 63 150 MPa |
| Poisson constant | — | 0.2 |
| Thermal conductivity 20°C – 100°C λ | — | (1.2) (w·m⁻¹)(K⁻¹) |
| Photoelastic constant | DIN 52314 | (4.00 × 10⁻⁶) (mm²/N) |
| Specific electrical resistance 10⁸ Ωcm | DIN 52326 | 482 ºF |
| Dimensional tolerance diameter | DIN 7080 | PASS |
| Property | Testing method | Obtained value |
|---|---|---|
| Hydrolytic resistance | ISO 719 | HGB 1 |
| Acid resistance | ISO 1776 | CLASS S1 |
| Alkaline resistance | ISO 695 | CLASS 2 |
| Chemical composition SiO₂ | — | Minimum content 80% |
| Chemical composition B₂O₃ | — | Minimum content 13% |
| Chemical composition Na₂O + K₂O | — | Minimum content 4.5% |
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