The present invention relates to a measurement or inspection apparatus which can be adjusted depending on a color of a plugged-in cable. In this manner the display of measurement values and the colour of the plugged-in cable can be coordinated to each other such that a simple assignment between measurement values and cable can be performed.

A multifunction testing and measuring device having a probe body with an elongated portion extending outward from a rearward main body portion to a hook-shaped forward end, the hook-shaped end useful for isolating a conductor under test, a slide closure member adapted to slide longitudinally forward from a rearward open position to a forward closed position, the closed position useful to capture the conductor under test within a space encircled by the combination of the hook-shaped end, the closed slide closure member, and the rearward main body, with the space encircled including a current sensing zone, and having test leads integral to and stowable on the main body. The multi tester comprises circuitry adapted for detecting a magnetic flux generated by an electric current passing through the conductor under test positioned within the current sensing zone, for sensing current and inrush current, as well as selectably measuring voltage, continuity, and resistance between the test leads.

A digital voltmeter, where a number of clock pulses for a first ramp voltage to reach an input voltage is determined. Next, a number of clock pulses for a second ramp voltage to reach the input voltage is determined. One of the first and the second ramp voltages having a least number of clock pulses to reach the input voltage is determined. A determination is made for a number of clock pulses for the determined one of the first and the second ramp voltages to reach a reference voltage. A digital code is generated for the input voltage based on the determined number of clock pulses for reaching the reference voltage and the determined least number of clock pulses for reaching the input voltage.

Systems and methods for calibrating a voltage measurement device are provided herein. The voltage measurement device generates a reference current signal and senses the reference current signal in a conductor under test. A calibration system may control a calibration voltage source to selectively output calibration voltages in a calibration conductor. The calibration system may obtain data from the voltage measurement device captured by the voltage measurement device when measuring the calibration conductor. Such data may include one or more reference current measurements, one or more voltage measurements, etc. The calibration system utilizes the obtained measurements to generate calibration data which may be stored on the voltage measurement device for use thereby during subsequent operation. The calibration data may include one or more lookup tables, coefficients for one or more mathematical formulas, etc.

In at least one embodiment, a handheld measurement system generates a measurement image derived from measurement data that is generated and/or received by the handheld measurement system. The handheld measurement system also generates a plurality of option images that each correspond to a particular selectable option. A display screen, which may be a touch screen, simultaneously displays the measurement image and the option images. The measurement device modifies the measurement image and/or the option images in response to received option image selections.

The disclosure provides an apparatus, system, and method for monitoring multiple portable generators. A monitoring device may include at least one electrical plug to connect to a respective electrical socket of multiple generators. The monitoring device may include a plurality of sensors, a wireless modem, and a processor communicatively coupled to the plurality of sensors, the wireless modem, and to a memory storing executable instructions. The monitoring device may generate a unique identifier for a connected generator of the multiple generators when plugged into the electrical socket of the connected generator. The monitoring device may monitor operational parameters of the connected generator based on the plurality of sensors. The monitoring device may store a respective profile for each of the multiple generators, each profile associated with a respective unique identifier and including the operational parameters. The monitoring device may transmit the profile to a mobile device via the wireless modem.

A digital multimeter stores multiple sequential measurements of physical or electrical parameters. Each of the sequential measurements has a name including an automatically generated descriptor. The descriptor for each sequential measurement may indicate a relative position of the measurement within the sequence. For instance, the descriptor may indicate whether the measurement was obtained before or after other measurements in the sequence.

An apparatus is provided for a diagnostic circuit test device having multi-meter functionality and being adapted to provide current sourcing to an electrical system for selective measurement of a plurality of parameters thereof in powered and unpowered states. The diagnostic circuit test device comprises a conductive probe element configured to be placed into contact with the electrical system and provide an input signal thereto. A power supply is interconnected between an internal power source and the conductive probe element. Processors are electrically connected to the conductive probe element and configured to manipulate the input signal provided to the electrical system and receive an output signal in response to the input signal. The output signal is representative of at least one of the parameters of the electrical system. A display device is configured to display a reading of the output signal which is representative of the parameter.

A smartphone-connectable multimeter having an automatic measurement target detection function, a measurement system including the same, and a measurement method using the same is provided. The smartphone-connectable multimeter includes: a housing; a pair of lead wires equipped with probes, and drawn from the housing; a range module configured to rectify and transform an electric signal, and installed in the housing; a voltage module configured to generate electricity and apply current to the measurement target; and a process module configured to receive instruction data, to generate analysis data by converting the electric signal, processed by the range module, into a corresponding digital signal suitable for an electrical characteristic according to settings of the instruction data and analyzing the digital signal, and to perform control so that the voltage module applies current when an electric signal is not received from the measurement target, and installed in the housing.

A device for testing a voltage level in an electrical terminal cavity including a testing body and a probe for contacting the electrical terminal cavity. The probe includes a tip portion having a first cross-sectional area, a base portion having a second cross-sectional area, and an intermediate portion extending from the tip portion to the base portion having a third cross-sectional area. The first cross-sectional area is smaller than the third cross-sectional area, the third cross-sectional area is smaller than the second cross-sectional area, and the intermediate portion is concentric with the tip portion and the base portion. An axis extends between a center of the tip portion, a center of the intermediate portion, a center of the base portion, and a center of the testing body. The device also includes a circuit operatively coupled with the probe to sense the voltage level in the electrical terminal cavity.