What is the normal OHMS range for a cad cell during burner operation?

The normal OHMS range for a cad cell during burner operation is typically between 300 and 1000. This measurement reflects the resistance of the cadmium cell, which is crucial for detecting flame presence. The cad cell works by using light energy produced by the flame to generate a small electrical current. When the burner is operating correctly, the resistance should be within this specified range, indicating that the flame is stable and the cad cell is functioning properly.

If the resistance value falls below or exceeds this range, it can indicate issues with the burner system, such as a weak flame or a malfunctioning cad cell. Proper understanding of this OHMS range is essential for maintaining safe and efficient burner operation. The other options provide ranges that are either too low or too high for typical burner operation, making them unsuitable for accurate assessment of the cad cell’s performance.