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4-wire
resistance measurement using an ohmmeter's two each, force and sense leads.
See Also: Resistance
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Value-added Module With 4 Terminal Block 4-wire Isolated RS-232/422/485
VAM100
*4 4-wire Isolated RS-232/422/485*Swappable modular design*Maximize I/O flexibility*2kV isolated protection*Designed for tBOX300/500 series*LVD, FCC, EN 50155 and IEC 60945 certified; CE compliant
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4-Wire Resistance Measurement | Continuity & HiPot Cable & Wire Harness Testers
An add-on option for the CableEye HVX high voltage cable tester series that permits expanded testing for contact and wire resistance as low as 1 mΩ. After checking for opens, shorts, miswires, and resistance limits, the 4-wire Kelvin measurement applies a user-selectable test current from 10 mA to 1 A to determine connection resistance within 1 mΩ. The resistance profile of a model cable may be stored and used as a basis of comparison during later testing to reveal cold solder joints, faulty crimps, recessed pins, pin contact contamination, improper wire gauge, and stress-extruded wire.This option may be purchased with any new HVX tester, or added as an upgrade to any of your existing HVX testers.
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REM-11100, 2-, 3-, 4-Wire, 4-Channel Voltage Input Module for Remote I/O
784748-01
2-, 3-, 4-Wire, 4-Channel Voltage Input Module for Remote I/O - The REM‑11100 is a voltage input module for remote I/O. Remote I/O systems are low-cost, modular systems for simple machine control and measurements. A remote I/O system consists of an EtherCAT bus coupler and individual modules mounted on a DIN rail. You control the REM‑11100 from a real-time controller, such as a CompactRIO Controller or an Industrial Controller. You can use remote I/O hardware to add low-cost I/O for simple tasks while your controller handles advanced tasks such as image processing, motion control, and high-speed or specialty measurements. This module features 2‑, 3‑, and 4‑wire spring terminal connection methods, a built-in power supply for sensors, four selectable input ranges, and simultaneous sampling.
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PXI-2503 , 48‐Channel, 1-, 2-, or 4-Wire, Electromechanical PXI Multiplexer Switch Module
777697-01
48‐Channel, 1-, 2-, or 4-Wire, Electromechanical PXI Multiplexer Switch Module—The PXI‑2503 is a PXI switch module that you can configure as a multiplexer or matrix switch by using different terminal block accessories. It uses electromechanical relays with low thermal offset for accurate measurements and offers a 1,024‐step scan list for deterministic scanning.
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4 Wire Earth Resistance Testers
2734 ER
Standard Electric Works Co., Ltd
● Microprocessor-controlled with advanced safety features.● 4-wire testing only.● Automatic C spike check.● Auto power-off.● Auto data hold.● Large LCD (2000 counts).● Protective terminal cover.
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Micro-Ohmmeters
Micro-Ohmmeter is an affordable 7 range, 4-Wire Kelvin based product that is used to test electrical resistance on a wide variety of applications including winding resistance, contact resistance, and component testing. The 720A micro-ohmmeter has an autorange feature (available with NSN package) and is compatible with an RS232C interface (OP-232). Thanks to its wide-range capabilities, ease of use, and CE mark, this micro-ohmmeter is used commonly across the globe.
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Battery Testers
Shanghai Beha Electronics Co., Ltd.
*can measure the resistance of rechargeable batteries and DC voltage.*can also test Ni-cd, Ni-MH, Li-ion batteries.*DC Voltage measurement.*4-wire resistance measurement.
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PXI/PXIe LVDT/RVDT/High Speed Resolver Simulator Module, 4-Banks
41-670-301-AABBCC
The 41-670-301 (PXI) and 43-670-301 (PXIe) are ideal for the simulation of variable differential transformers (VDT), both linear (LVDT) and rotary (RVDT) types, as well as resolvers with high speed simulation up to 130krpm rotation. They have four banks, each capable of simulating the output of a single 5 or 6-wire VDT or resolver, or dual 4-wire utilizing a shared excitation signal. This allows the module to simulate up to 4 channels of 5 or 6-wire or 8 channels of 4-wire.
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16-Channel Multiplexer (2 / 4-Wire) Module for DAQ970A and DAQ973A
DAQM902A
DAQM902A 16 Channel Multiplexer (2/4-wire) Module. Reed relays with high voltage switching of up to 300 V and scan speed up to 250 ch/s.
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Digital Milliohm Meter and Resistance Tester
4338 mO
Standard Electric Works Co., Ltd
● Protection class: IP65 (Lid closed)● 4-Wire method for mΩ.● It's about 100mA at 1100.0mΩ range.● It's about 10mA at 11000mΩ range.● Measures down to 100µΩ (0.1mΩ).● Maximum resolution of 100µΩ.● Large LCD (68×34mm).● Relative mode. ● Data hold function.● MAX/MIN function.● Power source: 1.5V "C" battery × 8● Long battery life and stable power. ● Low battery indication.
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Party Line Intercom Conversion
COMMS Series
The stand-alone COMMS 300 and the OG-COMMS openGear® units provide a means to interface between two channels of 2-wire party-line intercom audio and two channels of 4-Wire analog line-level signals. The unit is capable of performing auto nulling for each channel with the push of a button. In addition, each of the 4-Wire input and output channel levels are monitored and displayed on easy to understand front panel VU meters.
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VXI High Precision Digital Multimeter
VX2120
The VX2120 is a high precision Digital Multimeter (DMM) for high performance measurements with 24Bit resolution. It provides measurements DCV up to 1,000VDC, ACV up to 1,000VACPeak and resistance (2 or 4-wire) up to 10MΩ. The internal microprocessor is equipped with flash memory for an fast and easy software update via the VXI-Bus. This will simplify new measurement functions to be downloaded. The VX2120 does support both True-RMS and Average-Peak AC-Measurements. For high precision AC measurements the VX2120 uses the "tracking technology". This feature allows high accurate AC measurements even at very low signal frequencies.
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6.5 Digit PXI Digital Multimeters
M918xA Series
ompact digital multimeters (DMM) provide popular measurement functions such as DCV, ACV, DCI, ACI, 2- and 4-wire resistance, and more, with the accuracy and stability you would expect from a 6.5-digit PXI DMM. High performance in a small, rugged package gives you an ideal deployment platform for many automated test systems.
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PXI/PXIe LVDT/RVDT Simulator Module, 4-Banks
43-670-101-AABBCC
The 41/43-670-101 is ideal for the simulation of variable differential transformers (VDT), both linear (LVDT) and rotary (RVDT) types. It has four banks, each capable of simulating the output of a single 5 or 6-wire VDT or resolver, or dual 4-wire utilizing a shared excitation signal.
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Intelligent Power Monitor
iPM
NAI’s iPM is an Intelligent Power Monitor that provides a precise, instrument grade, digital analysis of input power lines. This advanced, DSP-based unit monitors single-phase, 3-phase 4-wire wye, or 3-phase Delta power lines at various input voltage levels and frequencies.The iPM is equipped with an EIA RS485-compatible serial communications interface that permits additional control functions and readout of diagnostic data, and features a Background Built-in-Test (BIT) that constantly monitors the health of unit hardware and software. This power monitor is designed and qualified to the most stringent performance and environmental requirements, and is ideally suited for rugged defense and industrial applications.
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4-Wire Universal Cable Tester
LX-860
Shenzhen Lian Xin Technology Co., Ltd.
The system provides Chinese/English free switch operation interface·Starting up conducts self-diagnosis and self-correction·The system can scan and direct automatically.·The system provides advanced instant open-circuit, short-circuit, continuity test, can test the wire break·It can function as unilateral, standard, multi-segment and spot test of wire·The maximum test voltage is AC1000V / DC1500V
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Capacitive to Digital and Touch Screen Controllers
Are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens.
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Ground Resistance Tester
Weshine Electric Manufacturing Co., Ltd
1.Soil resistivity tester supports 2, 3 and 4wire grounding resistance measurement. 2. 4digit large LCD display with white screen backlight, suitable for use in dimly lit places. 3. IP65 protection grade, good waterproof, compact and portable, supports multiple functional tests.
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SparkFun TFT LCD Breakout
1.8" (128x160)
The SparkFun TFT LCD Breakout is a versatile, colorful, and easy way to experiment with graphics or create a user interface for your project. With a 4-wire SPI interface and microSD card holder, you can use this breakout to easily add visual display/interface capabilities to a project as well as providing all the storage you might need for multimedia files.
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RS232 / RS485 / RS422 Isolators/ Isolated Converters
From 3-wire to 7-wire RS232 isolators, 2-wire RS485 to 4-wire RS422 / RS485 isolators, and USB isolators to USB / RS232 / RS485 / RS422 optically-isolated converters, CommFront has all the industrial-grade optical-isolation devices to protect your assets from the unexpected. If off-the-shelf product does not provide enough security for you, we can even tailor-make the devices, which are customizable right down to the nuts and bolts.
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Multi Function Coil Tester
This device tests all ECU control, electronic control, or conventional distributor type ignition coils. The Tester comes with a range of connection cables with terminals to suit the majority of 2-wires, 3-wires, or 4-wires Ignition Coil of various car makes. The Ignition Coil Test is designed to detect the faults in the ignition system and whether there is any occurrence of misfire in a sluggish engine.
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Digital Power Recorder
MPR-601W-01
MULTI MEASURING INSTRUMENTS Co., Ltd.
*Applicable for single phase 2wires and single phase 3wires and *3phase 3wires and 3phase 4wires system*Wide measuring range up to 0～500V/500A*Easy data logging by USB flash memory
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PXI/PXIe LVDT/RVDT/Resolver Simulator Module, 4-Banks
41-670-001-AABBCC
The 41/43-670-001 is ideal for the simulation of variable differential transformers (VDT), both linear (LVDT) and rotary (RVDT) types, as well as resolvers. It has four banks, each capable of simulating the output of a single 5 or 6-wire VDT or resolver, or dual 4-wire utilizing a shared excitation signal. This allows the module to simulate up to 4 channels of 5 or 6-wire or 8 channels of 4-wire.
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MAX31856 Thermocouple Sensor Arduino Shield
SEN-30007-ST
Quad channel thermocouple Arduino shield based on the MAX31856 universal digital thermocouple interface IC. This is an exciting update of the MAX31855, with improvements in resolution (19 vs 14 bits), on-board temperature reference (6 vs 4 bits), and compensation (fully compensated vs nonlinear correction required). The MAX31856 is interfaced via 4-wire SPI with options for interrupt triggering. An LDO and a high-speed level shifter are included on ALL device pins to allow interfacing with to any Arduino - both 3.3V and 5.0V variants - without sacrificing device performance in any operating condition.
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Value-added Module With COM/CAN/DIO And 3 PCI Express Mini Card Slots
VAM900
*1 4-wire isolated RS-232/422/485, 1 isolated CANBus 2.0A/B, 1 isolated DIO 8-in/8-out*Swappable modular design*Maximize I/O flexibility*2kV (COM & CANBus)/1.5 kV (DIO) isolated protection*Designed for tBOX300/500 series*EN 50155 certified; CE, LVD and FCC compliant
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Kelvin Clip Set
11062A
Create custom Kelvin probes for 4-wire resistance measurements; set contains only the two gold-plated clips
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Banana-Triax Adapter For 4‑Wire (Kelvin) Connection
N1297B
The N1297 Series is a collection of banana-triax adapters for the Keysight B2900 Series precision source measure unit (SMU). It consists of both 2-wire as well as 4-wire connection requirements.
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PXI/PXIe LVDT/RVDT/Resolver Simulator Module, 2-Banks
43-670-003-AABBCC
The 41/43-670-003 is ideal for the simulation of variable differential transformers (VDT), both linear (LVDT) and rotary (RVDT) types, as well as resolvers. It has two banks, each capable of simulating the output of a single 5 or 6-wire VDT or resolver, or dual 4-wire utilizing a shared excitation signal.
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MAX31856 Thermocouple Sensor Arduino Shield
SEN-30007-J
Quad channel thermocouple Arduino shield based on the MAX31856 universal digital thermocouple interface IC. This is an exciting update of the MAX31855, with improvements in resolution (19 vs 14 bits), on-board temperature reference (6 vs 4 bits), and compensation (fully compensated vs nonlinear correction required). The MAX31856 is interfaced via 4-wire SPI with options for interrupt triggering. An LDO and a high-speed level shifter are included on ALL device pins to allow interfacing with to any Arduino - both 3.3V and 5.0V variants - without sacrificing device performance in any operating condition.
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PXI/PXIe LVDT/RVDT/High Speed Resolver Simulator Module, 4-Banks
43-670-301-AABBCC
The 41-670-301 (PXI) and 43-670-301 (PXIe) are ideal for the simulation of variable differential transformers (VDT), both linear (LVDT) and rotary (RVDT) types, as well as resolvers with high speed simulation up to 130krpm rotation. They have four banks, each capable of simulating the output of a single 5 or 6-wire VDT or resolver, or dual 4-wire utilizing a shared excitation signal. This allows the module to simulate up to 4 channels of 5 or 6-wire or 8 channels of 4-wire.
