What is the minimum pipe size required for a sensing line?

The minimum pipe size required for a sensing line is typically 1/2 inch. This size is vital because it ensures proper fluid flow and responsiveness in the system. A 1/2-inch sensing line can effectively handle the pressure and flow necessary for detecting changes within the system, which is crucial for reliable operation. This size balances the need for sufficient volume and pressure while minimizing potential blockages that can occur with smaller diameters.

Using a 1/4 inch pipe might restrict the flow too much, resulting in slower response times to changes, which can be detrimental to the system's overall performance. While larger sizes, such as 3/4 inch or 1 inch, may accommodate greater flow, they are unnecessary for typical sensing line applications and could complicate installation or increase costs without providing additional benefits. Hence, 1/2 inch stands as the standard minimum for effectiveness and efficiency in sensing line applications.