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Analog ammeters are metered instruments that measure current flow in amperes. They display current levels on a dial, usually with a moving pointer or needle.
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Analog dBm meters are instruments that measure signal power. They display values on a dial, usually with a needle or moving pointer.
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Analog multimeters are instruments that are used to measure electrical quantities such as voltage, current, resistance, frequency and signal power
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Analog resistance meters are instruments that measure electrical resistance. They display values on a dial, usually with a needle or moving pointer.
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Analog voltmeters are instruments that measure voltage or voltage drop in a circuit. They display values on a dial, usually with a needle or moving pointer.
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Cable testers are handheld or benchtop electronic devices that measure the electrical and physical properties of network cabling.
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Calibration instruments use electrical signals or physical quantities to calibrate sensors and meters. Devices that produce electrical signals can serve as precise meters for sensor calibration, or send output signals to other devices.
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Capacitance meters measure the value of capacitance in circuit elements.
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Chart recorders and strip charts are data acquisition tools used to generate a plot, graph or other visualization of data versus time.
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Circuit tracers or signal tracers are used to troubleshoot circuits. They are relatively simple electrical testing instruments that enable electricians and other users to locate, trace and identify common electrical problems such as breakers, shorts, and
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Clamp meters are ammeters that can measure current without the need to disconnect the wires where the measurement occurs. They provide information about current draw and current continuity in order to help users troubleshoot erratic loads and trends.
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Computer-based instruments are part of a computer (a board, for example), or need to be connected to a computer in order to measure and display data.
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Continuity testers are electrical test instruments that are used to determine if an electrical circuit exists between two points.
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Data acquisition is the digitizing and processing of multiple sensor or signal inputs for the purpose of monitoring, analyzing and/or controlling systems and processes. Signal conditioning includes the amplification, filtering, converting, and other processes required to make sensor output suitable for rereading by computer boards.
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Data acquisition I/O modules or cards have both input and output functionality. Digital or discrete I/O modules include on-off signals used in communication, user interface, or control.
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Data loggers and data recorders acquire digital data from sensors and other signals. They are primarily used to store data for subsequent downloads to a host PC, but may also include real-time features such as monitors and alarms.
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Dial thermometers are bimetal or bi-metallic, liquid or gas-filled, and vapor-tension-based. These devices display temperatures in Fahrenheit, Celsius, or both.
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Digital ammeters are instruments that measure current flow in amperes and display current levels on a digital display. These devices provide information about current draw and current continuity in order to help users troubleshoot erratic loads and trends
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Digital multimeters (or multi-meters) are used to measure electrical quantities such as voltage, current, resistance, frequency, temperature, capacitance, and time period measurements.
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Digital resistance meters are instruments that measure electrical resistance. They use solid-state components and display values digitally.
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Digital thermometers are portable temperature sensing devices that have permanent probes and a digital display.
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Digital voltmeters are instruments that measure voltage or voltage drop in a circuit. They use solid-state components and display values digitally.
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Frequency meters are instruments that provide analog outputs as frequencies that vary as a function of the applied input. They display values on a dial, usually with a needle or moving pointer.
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Gas and air instruments detect, monitor or analyze gases present in an environment.
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Ground Fault Circuit Interrupter (GFCI) testers check for the integrity of GFCI devices.
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Ground bond testers are electrical safety test devices that perform electrical compliance tests.
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Ground resistance testers are devices that are used to measure and test electrical grounding systems.
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Humidity measurement instruments test for absolute humidity, relative humidity, or dew point in air.
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KVA meters measure the apparent power of AC devices in kilovolt-amperes (KVA). Apparent power is the combination of a circuit’s true power and reactive power.
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Leak testing equipment is used to measure the escape of liquids, vacuum or gases from sealed components or systems.
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Lux meters or light meters measure illumination in terms of luxes (lx) or foot candles (fc).
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Megohmmeters generate high voltage, low current signals for testing the breakdown strength of electrical insulation. They are called megohmmeters because the insulating resistance of a properly designed product is expressed in mega ohms (M  ).
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Moisture meters are used to measure the moisture content in bulk solids, liquids and gases.
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Noncontact infrared temperature sensors absorb ambient infrared (IR) radiation given off by a heated surface. They are used in applications where direct temperature measurement is not possible.
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Oscilloscopes translate an electronic signal into a pattern or waveform on a screen. As it is traced across the screen, the waveform creates a signature of the signal's characteristics.
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Phase meters (phase testers, phase rotation meters) check the phase sequence and phase orientation in three-phase electrical systems.
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Power meters and wattmeters are used for high-accuracy measurements of power over a wide-frequency bandwidth, and from both AC and DC circuits.
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Power quality analyzers measure and monitor electrical power parameters to avoid disturbances, track steady-state variations, and ensure the reliability of power distribution systems.
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Protective relays and monitoring relays detect or monitor for abnormal power system conditions.
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Receptacle testers are used to test wiring in electrical receptacles.
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Serial communication products are used in industrial and commercial systems to transmit data bit-by-bit, or sequentially, over a single wire. They include serial servers, serial hubs, serial adapters, serial data converters, serial routers, and serial multiplexers.
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Serial data converters are used to interconnect two different serial standards, such as RS232 to RS422, USB to RS232, etc.
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Signal conditioning products provide amplification, filtering, converting, and other processes required to make sensor output suitable for reading by computer boards.
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Solid state relays or semiconductor relays (also called SSRs) can be used in place of mechanical relays to switch electricity to a load in many applications.
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Sound level meters and noise dosimeters are used in sound and noise analysis. Applications include industrial safety, traffic noise studies, and scientific noise measurement.
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Tachometers are used to measure the velocity of a rotating object. They operate on the principle that a driven motor (i.e., a motor operated as a generator) produces a voltage that is proportional to the angular velocity of the motor shaft.
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Temperature instruments use contact or noncontact methods to measure temperature. Products include dial, digital, industrial and laboratory thermometers; temperature probes, indicators, and sensors; RTD elements and transmitters; and thermistors, thermocouples, thermopiles, and thermal switches.
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Temperature sensors are measurement devices that infer temperature by sensing some physical characteristic (i.e. resistance, emf or thermal radiation).
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Temperature signal conditioners accept outputs from temperature measurement devices such as resistance temperature detectors (RTDs), thermocouples, and thermistors. They then filter, amplify, and/or convert these outputs to digital signals, or to levels suitable for digitization.
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Electric test probes are used to establish a connection between a circuit under test and the measuring instrument.
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Thermocouple elements are temperature sensors that are useful over a wide range of temperatures. Thermocouples are formed by two dissimilar metals.
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Voltage testers check for difference in potential in electrical circuits.
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Weather instruments are designed to measure one or multiple components of weather including wind speed and direction, rain or snow fall, solar radiation, temperature, pressure and humidity.
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Wire harness testers evaluate continuity, resistance, isolation, and other performance factors for multi-strand wire harnesses.
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