Question

Which is of the following is determined by deploying multiple gauge glasses in boilers?
1. Flow
2. Pressure
3. Velocity
4. Level

Answer 1

Correct Answer - Option 4 : Level

Explanation:

Gauge glass:

• It is a water level indicator used in steam boilers to view the level of water in the boiler by the operator.
• A gauge glass shows the current level of water in the boiler, regardless of the boiler’s operating conditions.
• Gauge glasses should be installed so that their lowest reading will show the water level at 50 mm above the point where overheating will occur.
• They should also be fitted with a protector around them, but this should not hinder the visibility of the water level.
• Gauge glasses are prone to damage from a number of sources, such as corrosion from the chemicals in the boiler water, and erosion during blowdown, particularly at the steam end.
• Any sign of corrosion or erosion indicates that a new glass is required.