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Current Sensors
detect AC or DC electrical current.
See Also: Current Probes, SQUID, Voltage Sensors, Rogowski
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Eddy Current Probes and Drivers
Proximity sensors work on the eddy current principle. A proximity system consists of an eddy current probe, extension cable and driver. A high-frequency RF signal is generated by the driver, sent through the extension and probe cables and radiated from the probe tip. The tip consists of a precision wound copper coil inside a chemical and temperature resistant PEEK case.
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Stand-Alone Current Sensors
The Aanderaa Current Sensors are based on the backscatter acoustic Doppler principle.
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CMOS Image Sensors
Since 1999 ST has been an industry leader in the design and manufacture of imaging sensors. The current product portfolio spans a wide range of traditional image sensors from entry level VGA to 24 Mpixels and will soon offer products with 100’s of millions of pixels.
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Multi Circuit Leakage Current Monitor
MCM-8000
By connecting optional CT sensors, the instrument can measure and memorize leakage current of 8 circuits at the same time and the memorized data can be seen even during measurement.
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Eddy Current Sensor
eddyNCDT 3001
The eddyNCDT 3001 is a new, efficient eddy current sensor whose compact dimensions have to date only been reserved for inductive sensors and proximity sensors. The temperature-compensated design provides high stability even in fluctuating ambient temperatures. The eddyNCDT 3001 comes with integrated electronics, offering an outstanding price/performance ratio and easy operation. The eddyNCDT 3001 eddy current sensor is ideally suited to OEM integration and machine building applications. The sensor is factory-calibrated for ferromagnetic and non-ferromagnetic materials, which eliminates the need for field calibration of the sensor. The eddyNCDT 3001 is available with connector or with integrated cable. A robust design combined with the eddy current measuring principle enables measurements in harsh industrial environments (oil, pressure, dirt). In addition, the eddyNCDT 3001 is suitable for offshore/marine applications (salt water).
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4-20mA Converters
4026
SPECTEC Innovative Sensor Solutions
Model 4026 Freq to Voltage or Freq to Current Converter accepts frequency input from any magnetic speed sensor, digital magnetic pickup or Hall effect zero speed sensors. Input and output configurations are field selectable. Input range is adjustable between 1100 Hz - 10 kHz or 75Hz to 1100 Hz. Output selection can be configured as 4-20mA converter, 10-50mA converter, 0-5 V FTV converter or 0-10 V FTV converter. ZERO and SPAN adjustments easily calibrate to almost any measurement range, with little interaction between the adjustments.
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Data Acquisition Systems & Data Loggers
Whether it’s in a vehicle, on a test stand or monitoring equipment and machinery - imc data acquisition systems are easy to operate and will help you become more productive and profitable. Our products are suited for work in mechanical and mechatronic applications. They handle up to 100 kHz per channel, are compatible with almost all signal sources and sensors, and can measure nearly all physical quantities such as pressure, force, speed, vibration, noise, temperature, voltage and current. The spectrum of imc data acquisition systems ranges from simple data acquisition via integrated real-time calculations, to the integration of models and complete automation of test stands.
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Cryogenic Temperature Sensors
Capacitance
CS capacitance sensors are ideally suited for use as cryogenic temperature control sensors in strong magnetic fields because they exhibit virtually no magnetic field dependence. Displacement current is not affected by magnetic fields. Consequently, temperature control fluctuations are kept to a minimum when sweeping magnetic field or when changing field values under constant temperature operation.
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PXI-6236, 4 AI (16-Bit, 250 kS/s), 4 AO, 6 DI, 4 DO, Bank-Isolated, PXI Multifunction I/O Module
779622-01
4 AI (16-Bit, 250 kS/s), 4 AO, 6 DI, 4 DO, Bank-Isolated, PXI Multifunction I/O Module—The PXI‑6236 is a bank-isolated DAQ device designed for current I/O. It offers analog I/O, digital input, digital output, two 32‑bit counters, and digital triggering. The digital input and outputs are compatible with 5 V TTL/CMOS signals. It combines the safety and performance benefits of isolation with high-performance timing, amplification, and calibration technologies to offer accurate measurements and precise control. The PXI‑6236 is ideal for test, measurement, control, and design applications in environments with high voltages and electrical noise. You can use the PXI‑6236 to read from encoders, flow meters, and proximity sensors as well as control valves, pumps, and relays.
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Real-Time Online Monitoring to Detect and Analyze Potential Partial Discharge (PD) Signals and Insulation Faults using UHF, AE, and HFCT
PDMonitor
Power Monitoring and Diagnostic Technology Ltd.
The PDMonitor, which utilizes Ultra High Frequency (UHF), Acoustic Emission (AE) and High Frequency Current Transformer (HFCT) sensors and is designed to conduct real time online monitoring to detect and analyze potential Partial Discharge (PD) signals and insulation faults before they lead to breakdown or catastrophic failure in power assets. The system provides the developing trend of the PD, when occurring, as alarms in real time, thus helping to predict the insulation degradation status of the asset, prevent sudden accidents, and provide an effective database for Condition-Based Maintenance (CBM) of power assets.
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Laboratory EM current meter / water level and wave height meter
ACM2-RS and ACM3-RS are 2-D and 3-D electro-magnetic current meters for laboratory experiments. The models provide digital output, a high-speed sampling rate and insusceptibility to electro-magnetic noise. ACH-600RS is a highly sensitive capacitance water level meters. With the new system, a maximum of four different sensors can be connected to the compact interface unit, enabling simultaneous recording on a personal computer. Additionally, the system can provide analog output as well as necessary. While conventional water level and wave height meters cannot be used near velocity sensors, our instrument can be as near as 5 cm without increasing noise, due to its special isolated circuit. The result is an innovative system that is capable of achieving highly accurate data.
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Current Sensors
Achieve higher efficiency and power density with our industry-leading current sensor ICs. Perfect for vehicle electrification as well as green industrial, computer and consumer applications.
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16-Channel RTD Signal Conditioning Card
ProDAQ 5821
The ProDAQ 5821 series of Signal Conditioning Cards is designed to interface with a variety of sensors, principally RTDs, Thermistors, Cryogenic Diodes and Voltage type sensors. Each version of the 5821 provides the capability of precise 4-wire measurement. In order to achieve this, a precise 500μA constant current source is provided per channel. The current source can be disabled on a per channel basis and is monitored to ensure that current is flowing. The value of the output current is stored on-board after calibration. In order to achieve the highest accuracy the output current may be automatically calibrated 'on-the-fly' using the ProDAQ 3416 24-bit Sigma-Delta ADC card and an on-board precision resistor.
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Low Input Bias Current Op Amps (≤100 pA)
Low input bias current op amps are required whenever the difference of currents or voltage is small and needs to be measured accurately. These op amps are used so that the signal is not loaded down by the input of the op amps. Low input bias current op amps are critical for interfacing sensors in applications from photodiodes, pH meters, or other electrometer related functions to downstream electronics. Analog Devices has many precision op amps that fit the definition and range of these applications.
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Monitoring Solar Panel Strings, DC 30A, Φ10mm
CTF-60-10DC
MULTI MEASURING INSTRUMENTS Co., Ltd.
・Compact, Space-saving, Low Cost DC Current Sensors.・Split-core type, easy to apply to existing circuit.・Easy to use by unipolar +5V power supply.・High speed responsibility – less than 10μsec. 0 rated primary current.・Suitable for monitoring solar panel strings.
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Modern Prepolarized Precision Condenser Microphones & Preamplifiers
Modern prepolarized microphones are designed with newer technology than traditional externally polarized microphones. Prepolarized microphones have many advantages over the externally polarized models. They use ICP® power circuitry invented for sensors by PCB®. By applying a polymer coating to the top of the backplate and embedding a charge on it, expensive 200V power supplies can be eliminated and 2-20 mA constant current supplies or signal conditioners can be used as the power source.
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sbRIO-9219, Non-Enclosed, 100 S/s/channel, 4-Channel C Series Universal Analog Input Module
781027-01
Non-Enclosed, 100 S/s/channel, 4-Channel C Series Universal Analog Input Module - The sbRIO‑9219 is designed for multipurpose testing. With the sbRIO‑9219, you can measure signals from sensors such as strain gages, resistance temperature detectors (RTDs), thermocouples, load cells, and other powered sensors, as well as make quarter-bridge, half-bridge, and full-bridge current measurements, with built-in voltage and current excitation. Each channel is individually selectable, so you can perform a different measurement type on each channel. Non-enclosed modules are designed for OEM applications.
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SparkFun PIR Breakout
1uA (EKMB1107112)
Passive Infrared (PIR) sensors are great for detecting motion in a small area around the sensor. The 1µA SparkFun EKMB1107112 PIR Breakout is a simple breakout equipped with an EKM-series PIR sensor from Panasonic®. The EKMB-series PIR sensors are optimized for small movements to offer motion-sensing options for battery powered applications due to the very low standby current consumption (1µA).
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DAQ Systems
Data acquisition systems (DAQ or DAS) collect information from connected sensors and other instrumentation to measure and record electrical and physical quantities, such as voltage, current, temperature, strain, pressure, shock, vibration, distance, displacement, RPM, Angle, and weight. A DAQ System typically consists of sensors, measurement hardware with signal conditioning and an Analog-to-Digital converter, and a computer with programmable software for data logging and analysis.
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Innovative Multiple - Object Tracking Radar
iMOTR
We have advanced the multiple-object tracking radar concept with an innovative application to meet today’s test range needs. The iMOTR features enhanced clutter suppression capabilities to deliver clearer, more accurate assessments of object launch trajectory and flight path data on airborne and low flying objects. This tracking information can then be handed-off to other radars or data collection sensors in real-time. The system is also better equipped to provide precision time, space, and position information (TSPI) data of multiple objects in flight over a wider field of regard than the current test range radars in service.
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High Current Calibrator
MC151
MC151 Current calibrator is an accurate current source capable of 120 A. Typical uses include calibration of current sensors, current probes, current transformers, shunts, ammeters, DMMs or as stable current source for test and development applications. The calibrator is equipped with a built-in multimeter that can be used for simulation of programmable transconductance or current amplifier.
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USB-6525, 16-Channel, 60 V, 8 Solid-State Relays, 8 Inputs, Ch-to-Ch Isolated Digital I/O Device
779640-01
The USB-6525 is an industrial, bus-powered USB I/O device that can automate even the most demanding applications. The solid-state relay outputs are ideal for controlling pumps, valves, motors, and various other industrial actuators. The USB-6525 features channel-to-channel isolated digital inputs that you can use to read from industrial digital sensors, and eight solid-state relay outputs featuring 60 VDC/30 Vrms switching voltage and 500 mA per channel maximum switching current. Using programmable power-up states, you can configure the initial output states in software to ensure glitch-free, safe operations when connected to industrial actuators.
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QuadStat
EA164
The QuadStat is a software-controlled four-channel potentiostat. Each channel can be used as a single three-electrode potentiostat. Alternatively two (bipotentiostat), three, or four working electrodes can be used in a single reaction chamber with a common reference and auxiliary electrode. Potential at each working electrode can be independently adjusted between 2.5 V, or by using an external waveform generator to between 10 V. The QuadStat can measure currents from pico- to milliamperes, making it ideal for amperometric biosensor research including use as a multichannel monitor for in vivo nitric oxide or dissolved oxgen sensors.
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Oscilloscope Tester
ScopeTester 5
ScopeTester 5 is 5-channel oscilloscope tester for PCs. Unlike traditional oscilloscopes it is capable of continuous acquisition of signals without dead times. This feature gives exceptional diagnostic value. Available voltage ranges matches typical signals found in modern cars. The user may connect to vehicle sensors, actuators and other diagnostic equipment, such as current clamps, inductive and capacitive probes and other diagnostic probes.
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IO-Link
The IO-Link® interface simplifies communication to smart sensors and actuators, combining signaling with power-over-cable technology. It has become one of the key devices as industrial automation systems are growing more interconnected and intelligent to accommodate demands for centralized control and optimized production. Analog Devices implements both device PHY and master PHY interfaces (COM1/COM2/COM3). Designing with harsh industrial environments in mind, the master 4-port IO-Link power and communications interface, as well as the IO-Link transceivers featuring Integrated Step-Down Regulators and LDO with ±60V cable interface protection provide the required ruggedness. Optimum EMC performance is achieved with adjustable current limit and slew rate transmitters. Automatic wake-up request (WURQ) generation and an output supply current boosting capability for device startup are also available. Additional components integrate a 300 mA step-down (buck) regulator and a 150 mA LDO to supply all the power required for internal electronics in an connected sensor or actuator.
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DC current Sensors
CTH
The CTH sensors convert dc current to an isolated voltage output, the CTHR sensors convert ac current to a dc output signal proportional to the Arms. All popular process control voltage and current loop outputs are available. Through hole or split core options mean that connection is non-intrusive and straightforward. The available input range of the CTH sensors is any value from 5A to 6000Adc.
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Clamp Meters
TES Electrical Electronic Corp.
Variable Frequency drive measurement. LoZ voltage measurement to drain ghost voltages. Check 3phase sequence. True RMS reading on AC and DC+AC mode. Inrush current measurement. A measurement for HAVAC flam sensors.
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AC Current Sensor
RCTi and RCTi 3ph
The RCTi & RCTrms sensors convert ac current to an isolated 0-5V voltage or 4-20mA current loop. TA5V-5A allows compatibility with existing 1A or 5A CT metering circuits. Both offer a choice of proportional (rms) and instantaneous outputs. The available RCT current ranges are 0-100A to 0-50,000Apk. Both RCTi and RCTrms provide accurate measurement over a wide bandwidth ensuring precise measurement even with harmonically distorted wave shapes - using a flexible clip-on sensing coil. The RCTs are available as single and three phase models.
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Loop-Powered Transmitters and Drivers
4-20mA
Loop-Powered Transmitters convert the output from proximity probes, seismic sensors, into a 4-20mA DC current, which is proportional to the input being measured. The transmitter converts the displacement or vibration signal to DC voltage and/or current for a DCS or PLC system. They control a 4-20mA current loop for a specified vibration range (ex. 0-5 mils peak-to-peak). The transmitters have a two-wire hook-up, powered solely by the loop current and have a power supply range of 15 to 36 volts.
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Multi-Channel Telemetry
The AT7000 multi-channel systems can combine any customized mix of ordinary sensors: strain gages, thermocouples, RTDs, accelerometers, as well as motor/generator field voltages, currents and ground fault currents. The received data is continuously streamed to the user as analog (+/- 10V or 4/20mA) or digital data.
