Described examples include devices and methods for measuring relative humidity of an environment using inductance. The devices can include a resonant circuit, including a capacitor and an inductor. The inductor includes a moisture-absorbing core with at least a portion thereof exposed to an environment, with at least one magnetic property of the core being variable in response to changing levels of moisture in the environment. An excitation circuit provides an AC excitation signal to the resonant circuit. A sense circuit determines an inductance of the inductor according to a sense signal from the resonant circuit. The sense circuit is coupled to generate an output signal that indicates a humidity level of the environment according to the sense signal.

A moisture intrusion detection system includes: an industrial robot that has a closed space defined thereinside; an air supply mechanism that supplies compressed air to the closed space; an air vent passage that is provided in the industrial robot to establish communication between an external space outside the industrial robot and the closed space, and guides, to the external space, air ejected from the closed space upon supply of the compressed air; a humidity sensor that detects a humidity of ejected air that is ejected from the air vent passage to the external space upon supply of the compressed air; and a controller that determines presence or absence of moisture intruding into the closed space based on a detected humidity of the ejected air, the detected humidity being detected by the humidity sensor.

A transparency, e.g. an aircraft laminated windshield, includes one or more moisture sensors to monitor moisture penetration to monitor performance of the moisture barrier. At least one of the moisture sensors includes a dielectric between and in electrical contact with two electrically conductive electrodes. Alternating electrical current is applied to the electrodes to measure the complex impedance (ohms) of the dielectric to determine the amount of moisture within the laminated windshield in the area of the moisture sensor. With the information provided by the moisture sensors performance of the windshield is available to schedule timely repair or replacement of the windshield that is performing outside of acceptable limits.

A package damage inspection device according to an exemplary embodiment of the present invention may include: a sensor recognizing internal environmental change information of a sealed container; an identification element including an identification code of the sealed container; a recognizing unit recognizing the identification code included in the identification element to recognize identification information of the sealed container; and a determining unit comparing the internal environmental change information recognized by the sensor and reference change information with each other to determine whether or not the sealed container is maintained in a sealed state.

A moisture meter for determining the moisture content of particulate material is provided. The moisture meter comprises a frame part, a space, a measuring cup disposed within said space for receiving a sample of the particulate material which moisture is to be measured, and moisture measuring means. The moisture meter comprises a swiping means for removing at least partly a part of a sample of particulate material which moisture is to be measured, which part of the sample of particulate material extends out of the inner space of the measuring cup through the open end of the measuring cup. The swiping means are movably attached to the frame part for movement in a swiping path where a swiping member of the swiping means is configured to move essentially along the open end of the measuring cup.

Provided is method of detecting presence or absence of a liquid suctioned by a syringe pump. The method includes, in a following order: a step of detecting a change in electrostatic capacitance between a pair of electrodes provided to a syringe, having a tubular shape in which a piston is moved in an axial direction of the syringe, of a syringe pump; and a step of detecting that liquid suction has been performed by the syringe pump based on the change in the electrostatic capacitance.

A soil sensor includes a signal generator, and a transmitter coupled to the signal generator, the transmitter configured to transmit a signal from the signal generator, the signal having a fixed frequency, the transmitter including a transmit electrode embedded within a first dielectric material. The soil sensor includes a receiver, the receiver being configured to electrostatically couple to the transmitter through a channel including soil, the receiver including a charge variation (QVAR) electrode embedded within a second dielectric material. The soil sensor includes a charge variation (QVAR) sensor coupled to the QVAR electrode, the QVAR sensor configured to detect a variation in charge detected at the QVAR electrode in response to the signal from the signal generator and output a digital signal including the charge detected. And the soil sensor further includes a processing circuit coupled to the QVAR sensor and configured to determine a level of moisture in the channel based on the digital signal.

A transparency, e.g. an aircraft laminated windshield, includes one or more moisture sensors to monitor moisture penetration to monitor performance of the moisture barrier. At least one of the moisture sensors includes a dielectric between and in electrical contact with two electrically conductive electrodes. Alternating electrical current is applied to the electrodes to measure the complex impedance (ohms) of the dielectric to determine the amount of moisture within the laminated windshield in the area of the moisture sensor. With the information provided by the moisture sensors performance of the windshield is available to schedule timely repair or replacement of the windshield that is performing outside of acceptable limits.

A moisture meter for determining the moisture content of particulate material is provided. The moisture meter comprises a frame part, a space, a measuring cup disposed within said space for receiving a sample of the particulate material which moisture is to be measured, and moisture measuring means. The moisture meter comprises a swiping means for removing at least partly a part of a sample of particulate material which moisture is to be measured, which part of the sample of particulate material extends out of the inner space of the measuring cup through the open end of the measuring cup. The swiping means are movably attached to the frame part for movement in a swiping path where a swiping member of the swiping means is configured to move essentially along the open end of the measuring cup.

A method of measuring a harvested crop includes measuring a first attribute of a first electric field in a first volume containing crop material, measuring a second attribute of a second electric field in a second volume containing crop material, and determining at least two different properties of the crop material based at least in part on the first attribute and the second attribute.