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4-wire
resistance measurement using an ohmmeter's two each, force and sense leads.
See Also: Resistance
- Pickering Interfaces Inc.
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PXI/PXIe LVDT/RVDT/Resolver Simulator Module, 2-Banks
41-670-003-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. This allows the module to simulate up to 2 channels of 5 or 6-wire or 4 channels of 4-wire.
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PXI-4132, 100 V, 2 W Precision PXI Source Measure Unit
780558-01
±100 V, 10 pA Precision PXI Source Measure Unit—The PXI-4132 is a programmable, high-precision source measure unit (SMU). It has a single isolated SMU channel that offers a four-quadrant output that incorporates remote (4-wire) sense as well as external guarding. With its high measurement resolution integrated guarding, the PXI-4132 is ideal for high-accuracy leakage measurements on integrated circuits, discrete components, PCBs, and cables. You can also perform high-speed I-V measurements on a variety of components including diodes and organic LEDs using the onboard hardware sequencing engine. In addition, you can synchronize multiple PXI-4132 modules using the PXI backplane to provide high-speed I-V measurements on transistors and more complex devices.
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8 Channels, RTD Measurement
RT1
The module provides 8 measurement channels, and can be programmed for interfacing to 2, 3, and 4-wire platinum RTD sensor configurations. The 4-wire mode (default) is the most accurate, providing excellent stability and repeatability. The RTD channels feature individual A/D converters and precision excitation/current drive. Programmable lead-wire compensation is provided for inherently less accurate 2 and 3-wire configurations. All RTD channels are self-aligning because each channel is automatically "aligned" on a rotating basis to eliminate offset and gain errors throughout the operating envelope. Programmability for expected resistance range and wire modes allows for optimization of scaling/resolution, as well as flexibility in reading many RTD types.
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Transceiver
TCVR Series
*4-wire SPI (3.3 V Logic) digital interface *-45 C° to +85 C° *4 W linear power T*ransceiver pair support dual polarization *Low EVM% *Outdoor unit IP68 compliant *Compliant to RTCA-DO-160G *Concept/Eval Unit Tested to 1024-QAM
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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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3-Slot Data Acquisition Mainframe With GPIB And Three 20-Channel Multiplexer Modules
DAQ973MB
The DAQ973MB Better Multiplexer Bundle offer includes a DAQ973A three-slot data acquisition mainframe and three 20-channel DAQM901A multiplexer modules. This bundle provides the following:3-slot mainframe with USB, LAN, and GPIB6.5-digit (22-bit) internal DMM60 channels of multiplexer switches6 channels of dedicated current measurements2- and 4-wire scanning300 V switching80 channels/s scanningbuilt-in thermocouple reference junctionbuilt-in signal conditioning to measure thermocouples, RTDs and thermistors, AC / DC volts and current; resistance, frequency / period, diode test, and capacitance
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- RS-422/485 DIN Rail Mounted Lightning/Surge Protector
Model 8022NX
FEATURES: Fast Response; Automatic Recovery; Up To 20 MBPS Data Rate; DIN Rail Mounted; Full Duplex; Triple Stage Protection. The Model 8022NX is a DIN Rail mounted surge suppressor for 4-wire RS-422 or RS-485 circuits used to protect factory data networks, or, any network that wants to avail itself of the DIN Rail packaging concept. The Model 8022NX provides common-mode (line to ground) surge protection and differential mode (line to line) protection for balanced networks. All the inputs, outputs and ground connections are via screw terminals located on the top surface of the device.
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Voltage Input Module For Remote I/O
The Voltage Input Module for Remote I/O features 2-, 3-, and 4-wire spring terminal connection methods, a built-in power supply for sensors, four selectable input ranges, and simultaneous sampling. A remote I/O system consists of an EtherCAT bus coupler and individual modules mounted on a DIN rail. You control the Voltage Input Module for Remote I/O 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.
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PXI Digital Multimeter, 6 digit, Enhanced Performance
M9183A
The Keysight M9183A is a 6 digit PXI digital multimeter that measures common parameters such as DCV, DCI, ACV, ACI, 2- and 4-wire resistance, frequency, capacitance, and temperature. It offers40 ppm basic DCV measurement accuracy, excellent noise rejection, and handles inputs of up to 300 V.
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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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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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Modbus Register Converter
Model 2390
* Converts Modbus Registers and variables for replacement Modbus devices.* Maintain existing software when upgrading Modbus systems.* Provides serial control of Modbus RTU devices from any ASCII source.* User defined Register Conversion Table supports all Modbus RTU devices.* Internal Register Conversion Tables for Watlow F4-to-EZ-ZONE and F4-to-F4T conversion.* Serial ports support RS-232 and 2-wire/4-wire RS-485 signals.* Includes baud rate conversion capability.* Uses SCPI commands to load the Conversion Table and set serial settings.* Small metal case mounts on a DIN rail or on any flat panel.* 239x Table Loader Program uploads the 2390 Register Conversion Table from an Excel csv file.* 239x Serial Keyboard Program provides instant control of the 2390 and Modbus Slave Devices without writing a program.
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Ground Testing
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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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 Dual 12x8 Matrix, 1 Pole Switching
40-522-021
Medium density PXI dual 12x8, 1-pole matrix - it is also available inreed relayformats of 2-pole and 1-pole screened (see "also in this range" on right). The screened version is suitable forswitching signals up to 50MHz. Typical applications include signal routing in ATE and data acquisition systems.The two banks may be used for operating a 4-wire measurement system (bank-1 for source,bank-2 for measure). Larger matrices may be constructed by daisy chaining the commonsignals from multiple PXI Modules.
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Slip Ring Test System
This is a high specification tester that will measure many cable parameters. It measures cable resistance very accurately using the Kelvin 4-wire method. It also tests for shorts between pins at a low voltage. The next test is to measure insulation between connections at a higher voltage. This is carried out at up to 1500 Volts DC with resistances of 10 to 500 Meg ohms.
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4-Wire Universal Cable/Harness Tester
LX-760+
Shenzhen Lian Xin Technology Co., Ltd.
The system provides English/Chinese free switch operation interface·4-Wire Measurement
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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.
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PXI Digital Multimeter, 6 digit, High Performance
M9182A
The Keysight M9182A is a 6digit PXI digital multimeter that measures common parameters such as DCV, DCI, ACV, ACI, 2- and 4-wire resistance, frequency, capacitance, and temperature. It offers 40 ppm basic DCV measurement accuracy, excellent noise rejection, and handles inputs of up to 300 V. The M9182A offers advanced triggering capabilities, including pre and post triggering.
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MAX31855 T-Type Thermocouple Arduino Shield
SEN-30004-T03
Four channel MAX31855 digital thermocouple Arduino Shield. Two versions of this shield are avaliable for each thermocouple type: either 'Ch 0-3' (CS pins use Uno/Mega IO pins 7-10) or 'Ch 4-7' (CS pins use Uno/Mega IO pins 3-6), with the only difference being which set of zero-ohm resistors are populated on the board. This allows use of other SPI devices that may be 'hard coded' to specific digital pins on the Arduino, or simply stacking one of each type together to get a total of eight thermocouple channels on one Arduino.Each order comes with one board and a set of four female, long extension, headers that can be soldered to the board. If stacking two of these modules on top of each other, please order both a Ch 0-3 and a Ch 4-7 board, as well as an additional set of headers for stacking. We're working on sourcing even longer headers, but the ones currently available are not long enough to stack as-is (they need to be double-stacked).The MAX31855T supports a measured temperature range of -270C-400C with known thermal characteristics and output resolution of 0.25C. Included thermocouple connectors are type-specific to provide proper material continuity as close to the IC as possible. The SEN-30004 is interfaced via 3 or 4-wire SPI and a high-speed level shifter is included to allow the board to plug directly into an Arduino Uno or MegaNote: we also offer a universal version of this board in a smaller for factor, the SEN-30003-T.FeaturesType-specific, miniature-sized vertical thermocouple connectors (vertical flat blades, see pics)Measures four (4) thermocouple channels, full extended range.Boards are stackable. Up to 8 thermocouple channels may be connected to an Arduino.14-bit SPI interfacePlugs directly into an Arduino Uno or Mega form factor with built-in voltage level translation on-board.Standard Arduino female headers required for easy configuration, one set included with order (1-6x1, 2-8x1, 1-10x1 0.1" female stackable headers), not soldered on.Detects shorts to GND or VccDetects open thermocoupleOther versions available (K, J, and T stocked). Contact Customer Service to place a custom order.Mounting holes for 4-40 sized screwsConnections are spaced for 0.1" pin headerDesigned, manufactured, tested and shipped from the USA The MAX31855T supports a measured temperature range of -270C-400C with known thermal characteristics and output resolution of 0.25C. Included thermocouple connectors are type-specific to provide proper material continuity as close to the IC as possible. The SEN-30004 is interfaced via 3 or 4-wire SPI and a high-speed level shifter is included to allow the board to plug directly into an Arduino Uno or Mega
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Serial to GPIB Controller
Model 4895
ICS's Serial to GPIB Controller allows any computer with a serial port to control GPIB devices. Works with RS-232 and 2 or 4-wire RS-422/RS-485 signals. Use to add GPIB Capability to PLCs with serial ports.
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MAX31855 J-Type Thermocouple Sensor Breakout
SEN-30003-J
Breakout board for the MAX31855J digital thermocouple interface ICs by Maxim. Measured temperature range is -210C-1200C with known thermal characteristics and output resolution of 0.25C. This sensor supports a larger operating range (specifically in the negative range) than its predecessors, the MAX6674 and MAX6675, though it is not pin-pin compatible. This board is interfaced with a 0.1" 2x5 pin header (8-pins used), has four vertical mini thermocouple connectors and four mounting holes for standoffs and 4-40 screws. The SEN-30003 is interfaced via 3 or 4-wire SPI with a data-ready output for specific operating modes. An LDO and a high-speed level shifter are included to allow interfacing with microcontroller devices between 3.0V and 5V (all Arduinos, Raspberry PI, etc) without sacrificing device performance (many other level shifters reduce data rates to below 500 kHz).
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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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Ground Bond Tester
HYAMP® Series
HYAMP III includes productivity-enhancing features and proven safety technology to reduce the compliance bottleneck on the production line. All models verify the integrity of your product's ground circuity with accurate 4-wire measurements and offset capability.
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Dual Channel Multi-Band FM Tracking/Data Receiver In Modular Style Housing
LS-27-B
The Lumistar LS-27-B Modular Dual Channel Tri-Band Tracking and Data Receiver is Lumistar’s third generation of modular high performance FM Receivers. This wideband designs supports one or two independent channels of PCM with data rates up to 20Mbps. The unit includes both an optional FM demodulated output for PCM data, and standard programmable AM/linear AGC outputs for auto-tracking receivers. The design offers 8 IF Bandwidths and 8 Video Filters per channel for each receiver.AC coupling with a low pass filter is employed to ensure a high quality data link with long strings of NRZ-L ones or zeroes. The unit provides a software selectable 10 MHz reference I/O port forlocking local oscillators to a high precision external source or to arrange multiple units in a master/slave arrangement. The receiver’s control and status is achieved via Ethernet, USB or auto-switched RS-232 (or “4-wire” RS-485 in place of 232). When utilizing the RS-422 interface, multi-drop configurations can be accommodated.
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TB-2630B , Screw Terminal, Ribbon, PXI Module Multiplexer Terminal Block
781687-01
The TB-2630B provides the necessary routing to configure the PXI-2630B PXI Multiplexer Switch Module as a single, dual, or quad 1-, 2, or 4-wire multiplexer. You can directly connect the TB-2630B to the front panel I/O connectors of the PXI-2630B. The NI TB-2630B features ribbon cable headers to connect signals to the PXI Multiplexer Switch Module as well as screw terminals for trigger input and trigger output signals.
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PXI Single 44x4 Matrix, 2 Pole Switching
40-523-022
Medium density PXI dual 44x4, 2-pole matrix - it is also available in reed relay formats of 1-pole and 1-pole screened (see "also in this range" on right). The screened version is suitable for switching signals up to 50MHz. Typical applications include signal routing in ATE and data acquisition systems. The two banks may be used for operating a 4-wire measurement system (bank-1 for source, bank-2 for measure). Larger matrices may be constructed by daisy chaining the common signals from multiple PXI Modules.
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PXI/PXIe LVDT/RVDT Simulator Module, 4-Banks
41-670-101-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. 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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Temperature Probe for Outdoor
TP32MT…
Series of Pt100 1/3 DIN 4-wire or T-type thermocouple temperature probes for outdoor/environmental measurements.
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Digital Micro Ohm Meters
Is used to measure DC low resistance through 4-wire method. Its features are: Comparison function to determine if the device is in good condition, unkown wire length calculation (FT/M); two-way data transmission by USB interface.
