New York Low Pressure Boiler COF Practice

What are the specifications for a non-mercury gauge of magnitude 3 psig?

1. 2-1/4" gage, dial arc 180*, minimum increments of 1/5 psig

2. 2-1/4" gage, dial arc 270*, minimum increments of 1/10 psig

3. 2-3/4" gage, dial arc 270*, minimum increments of 1/10 psig

4. 2-1/2" gage, dial arc 360*, minimum increments of 1/5 psig

The correct answer is: 2-1/4" gage, dial arc 270*, minimum increments of 1/10 psig

The specifications for a non-mercury gauge with a magnitude of 3 psig require specific dimensions and increments to ensure accuracy and ease of reading pressure levels effectively. A 2-1/4" gauge with a dial arc of 270 degrees and minimum increments of 1/10 psig meets these requirements perfectly. The size of the gauge (2-1/4") is suitable for the pressure range being measured. The 270-degree dial arc provides a larger viewing area compared to smaller arcs, allowing for easier reading of pressure levels, which is particularly important in maintaining safety and operational efficiency in boiler systems. Additionally, minimum increments of 1/10 psig offer sufficient sensitivity to detect small changes in pressure, further enhancing the gauge’s reliability and functionality. Understanding these specifications is crucial for ensuring safety standards and operational protocols are adhered to when managing low-pressure boilers, helping operators make accurate readings in various operational conditions.