If you had a damper motor with a 3-13 psig range, at what pressure would you expect to see the damper at 50% of its stroke?

If you had a damper motor with a 3-13 psig range, at what pressure would you expect to see the damper at 50% of its stroke?

• A. 5 psig
• B. 6 psig
• C. 8 psig
• D. 10 psig

Answer: (C)

To determine the pressure at which a damper motor operates at 50% of its stroke in a range of 3 to 13 psig, it is essential to find the midpoint of this pressure range. The minimum pressure is 3 psig and the maximum pressure is 13 psig. Calculating the midpoint involves finding the average of these two pressure values. First, you subtract the minimum pressure from the maximum pressure: 13 psig - 3 psig = 10 psig. Next, divide that result by 2 to determine the difference from the minimum value, and then add that to the minimum pressure: 10 psig / 2 = 5 psig. Adding this to the minimum pressure gives: 3 psig + 5 psig = 8 psig. Therefore, at 8 psig, the damper would be at 50% of its stroke. This interpretation aligns with the way that damper motors operate, where the pressure input directly translates to the position of the damper.

To determine the pressure at which a damper motor operates at 50% of its stroke in a range of 3 to 13 psig, it is essential to find the midpoint of this pressure range. The minimum pressure is 3 psig and the maximum pressure is 13 psig.

Calculating the midpoint involves finding the average of these two pressure values. First, you subtract the minimum pressure from the maximum pressure:

13 psig - 3 psig = 10 psig.

Next, divide that result by 2 to determine the difference from the minimum value, and then add that to the minimum pressure:

10 psig / 2 = 5 psig.

Adding this to the minimum pressure gives:

3 psig + 5 psig = 8 psig.

Therefore, at 8 psig, the damper would be at 50% of its stroke. This interpretation aligns with the way that damper motors operate, where the pressure input directly translates to the position of the damper.