A Rogowski coil in a sensor unit has voltage induced by a conductor surrounded by the Rogowski coil. The voltage is integrated to represent current which is converted to digital data representing current in the conductor and sent wirelessly to a multimeter. The sensor unit may receive control signals from the multimeter and a remote control apparatus. A plurality of sensor units may be networked and controlled by the remote control apparatus.

A test-and-measurement probe (200) for a test-and-measurement instrument (101), the test-and-measurement probe having a probe head (103) and a touchscreen user interface (250). The probe head is configured to obtain a signal from a device under test. The touchscreen user interface is configured to visually convey test-and-measurement information to a user and to accept user touch input. In embodiments, the touchscreen user interface is removably connected to a compbox (105) of the test-and-measurement probe, through a wired connection or wirelessly.

An apparatus includes a tablet computing device and a radio module physically fastened to the tablet computing device. The tablet computing device has a display and is configured to establish WiFi and BLUETOOTH Low Energy (BLE) communication links with other devices. The radio module is configured to establish ISA100 and WirelessHART communication links with field devices of a process control and automation system. The tablet computing device and the radio module are configured to communicate with each other using a BLE communication link. The apparatus is configured to selectably operate in multiple modes comprising a gateway mode, a router mode, a sniffer mode, and a discovery mode.

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 probe device has a main body and a probe body that can be rotatable relative to one another to change a shape of the probe device. This allows a user to use the probe device with the rotated probe body to reach behind areas that are difficult to reach into when the probe body is not rotated. The probe device could also have both a probe connector and an inductive clamp, where the probe connector could be used to measure a voltage of a conductive surface of an electronic circuit under test and the inductive clamp could be used to inductively measure a current flowing through a wire of an electronic circuit under test. The probe device is preferably configured with a grip configured to open and close the inductive clamp and a user interface positioned opposite the grip.

A probe for use with a measuring instrument. The probe is a wired probe assembly comprising a housing with an integrated user interface. The wired probe assembly further comprises a measuring component for contacting a device to be measured and a cord component connecting the measuring component to the measuring instrument. The user interface can indicate a status of an electrical parameter and allow an operator to provide inputs remotely to the measuring device.

The present invention aims to reduce the leakage current that flows when measuring a high voltage and includes: a voltage detector that detects a voltage and outputs a detection voltage; a current supplier that supplies a measurement current across a pair of input terminals via a protective resistor; and a processor that executes a voltage measurement process, which measures the voltage based on data indicating the detection voltage, and a resistance measurement process, which measures a resistance connected between the input terminals based on the voltage and the current. A first switch is connected in parallel to the protective resistor and the processor executes the voltage measurement process in a state where the first switch has been set open to measure the terminal voltage, and executes the resistance measurement process by setting the first switch shorted when the voltage is equal to or below the reference voltage value.

An apparatus having a conducting probe configured to couple with an electrical conductor of an electrical terminal. The apparatus has a sensor in contact with the conducting probe. The apparatus has a controller electrically coupled to the sensor, where the controller is configured to monitor the sensor values, and when the sensor values comply with a monitoring rule associated with a hazardous condition, the controller is configured to initiate an action to mitigate the hazardous condition.

The invention relates to an electrical, preferably portable and battery-powered, measurement device. The device comprises: an electrical measurement unit supplying electrical measurement signals, a processing unit processing said electrical measurement signals, a memory, and a display controlled by the processing unit and displaying the processed electrical signals, wherein the processor is arranged to execute an operating system stored in the memory, and wherein the in the memory furthermore a local web browser application is stored which can be executed by the processor in order to control the display.

An amplifier circuit includes: a Schmidt trigger having an input electrically coupled to an input of the amplifier circuit, a switching network electrically coupled to an output of the Schmidt trigger, an inductor electrically coupled to the switching network, a first resistor electrically coupled to the inductor, a capacitor electrically coupled to the first resistor, a first feedback circuit that provides a first feedback signal to the input of the Schmidt trigger based on a voltage at a first node electrically coupled to the first resistor and to the capacitor, a second resistor electrically coupled to the output of the amplifier circuit, a third resistor electrically coupled to the second resistor, and a second feedback circuit that provides a second feedback signal to the input of the Schmidt trigger based on a voltage at a second node electrically coupled to the second resistor and to the third resistor.