What is the function of the push-button or knob on electronic leak detectors?

The function of the push-button or knob on electronic leak detectors is primarily to set the detector for use in environments with ambient refrigerant vapor. Many electronic leak detectors are sensitive instruments designed to detect specific refrigerants in varying ambient conditions.

When a technician is operating the leak detector, adjusting the settings allows them to account for the presence of refrigerant in the environment, ensuring that the device can differentiate between normal background levels and actual leaks. This is particularly important in spaces where multiple types of refrigerant might be present or where there are other sources of vapor that could affect the detector's accuracy.

By properly configuring the detector using the push-button or knob, technicians can improve the reliability of their leak detection efforts. This ensures that they are following best practices while maintaining safety and accuracy in their work with refrigerants.