Abstract: Methods for manufacturing an apparatus for testing an ultrasonic gas leak detection device and methods for testing an ultrasonic gas leak detection device are disclosed. An example method includes disposing a rotary selector around a housing, disposing a rotary position sensing device within the housing, disposing a button on the housing, and disposing an ultrasonic transduction device within the housing, wherein the ultrasonic transduction device is configured to generate a first ultrasonic signal for testing the ultrasonic gas leak detection device when the first rotary position corresponds to the first testing mode and the button simultaneously corresponds to the depressed state, and generate a second ultrasonic signal for testing the ultrasonic gas leak detection device when the second rotary position corresponds to the second testing mode and the button simultaneously corresponds to the depressed state, wherein the second ultrasonic signal is different from the first ultrasonic signal.

Abstract: Methods for manufacturing an apparatus for testing an ultrasonic gas leak detection device and methods for testing an ultrasonic gas leak detection device are disclosed. An example method includes disposing a rotary selector around a housing, disposing a rotary position sensing device within the housing, disposing a button on the housing, and disposing an ultrasonic transduction device within the housing, wherein the ultrasonic transduction device is configured to generate a first ultrasonic signal for testing the ultrasonic gas leak detection device when the first rotary position corresponds to the first testing mode and the button simultaneously corresponds to the depressed state, and generate a second ultrasonic signal for testing the ultrasonic gas leak detection device when the second rotary position corresponds to the second testing mode and the button simultaneously corresponds to the depressed state, wherein the second ultrasonic signal is different from the first ultrasonic signal.

Abstract: The example apparatus for testing an ultrasonic gas leak detection device includes a button configurable between an un-depressed state and a depressed state and an ultrasonic transduction device. The ultrasonic transduction device is configured to generate a first ultrasonic signal for testing the ultrasonic gas leak detection device in response to a first determination that the apparatus is in a first testing mode and that the button simultaneously corresponds to the depressed state, and generate a second ultrasonic signal for testing the ultrasonic gas leak detection device in response to a second determination that the apparatus is in a second testing mode and that the button simultaneously corresponds to the depressed state, wherein the second ultrasonic signal is different from the first ultrasonic signal.

Abstract: Example computer systems, computer apparatuses, computer methods, and computer program products are disclosed for testing an ultrasonic gas leak detection device. An example method includes determining a rotary position of a rotary selector of the handheld ultrasonic testing device. The method further includes determining whether the rotary position of the rotary selector corresponds to a first testing mode for testing the ultrasonic gas leak detection device or a second testing mode for testing the ultrasonic gas leak detection device. The method further includes generating a first ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the first testing mode. The method further includes generating a second ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the second testing mode.

Abstract: Example computer systems, computer apparatuses, computer methods, and computer program products are disclosed for testing an ultrasonic gas leak detection device. An example method includes determining a rotary position of a rotary selector of the handheld ultrasonic testing device. The method further includes determining whether the rotary position of the rotary selector corresponds to a first testing mode for testing the ultrasonic gas leak detection device or a second testing mode for testing the ultrasonic gas leak detection device. The method further includes generating a first ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the first testing mode. The method further includes generating a second ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the second testing mode.

Abstract: Apparatus and associated methods relate to a functional self-test, including (1) generation of an excitation signal, (2) applying the excitation signal to a unit under test (UUT), the excitation signal including a cyclical signal for a first interval and substantially zero signal for a second interval, (3) determining frequency content of a UUT response signal, and (4) generating a fail result in response to the frequency content below a predetermined threshold. In an illustrative example, the UUT may be a piezoelectric element (PE). The UUT response signal may be processed by a filter, for example. A portion of the filtered UUT response signal, responding to the second interval of the excitation signal, may be analyzed by a fast Fourier transform module (FFTm), for example. In various implementations, the functional self-test may advantageously determine the health of a piezoelectric gas sensing element, periodically, in a field-deployed implementation.

Abstract: Example computer systems, computer apparatuses, computer methods, and computer program products are disclosed for testing an ultrasonic gas leak detection device. An example method includes determining a rotary position of a rotary selector of the handheld ultrasonic testing device. The method further includes determining whether the rotary position of the rotary selector corresponds to a first testing mode for testing the ultrasonic gas leak detection device or a second testing mode for testing the ultrasonic gas leak detection device. The method further includes generating a first ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the first testing mode. The method further includes generating a second ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the second testing mode.

Abstract: Apparatus and associated methods relate to a functional self-test, including (1) generation of an excitation signal, (2) applying the excitation signal to a unit under test (UUT), the excitation signal including a cyclical signal for a first interval and substantially zero signal for a second interval, (3) determining frequency content of a UUT response signal, and (4) generating a fail result in response to the frequency content below a predetermined threshold. In an illustrative example, the UUT may be a piezoelectric element (PE). The UUT response signal may be processed by a filter, for example. A portion of the filtered UUT response signal, responding to the second interval of the excitation signal, may be analyzed by a fast Fourier transform module (FFTm), for example. In various implementations, the functional self-test may advantageously determine the health of a piezoelectric gas sensing element, periodically, in a field-deployed implementation.