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 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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3-Slot Data Acquisition Mainframe With Three 20-Channel Multiplexer Modules
DAQ970MB
The DAQ970MB Good Multiplexer Bundle offer includes a DAQ970A three-slot data acquisition mainframe and three 20-channel DAQM901A multiplexer modules. This bundle provides the following:3-slot mainframe with USB and LAN6.5-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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RTD Measurement for CompactPCI
CPCI390
The CPCI390 has a 3U form factor and features six 2-, 3-, or 4-wire high-accuracy RTD measurement channels. Each channel has programmable alarm limits on which an interrupt can be issued. The local DSP (TMS320C203) performs linearization, auto-calibration and alarm limit checking. Sensordata is available in °C, °F, K and Ohm. All inputs are optically isolated from the system.
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PXI/PXIe LVDT/RVDT Simulator Module, 2-Banks
43-670-103-AABBCC
The 41/43-670-103 is ideal for the simulation of variable differential transformers (VDT), both linear (LVDT) and rotary (RVDT) types. 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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PXI Matrix Switch: 4x32, 2-Wire, 100Vrms/2A, Armature Relays
M9120A
The M9120A high-density matrix offers higher voltage switching of multiple channels in a single instance. Any row can be connected to any column, making it ideal for routing instrument signals to the device under test. This 2-wire switch matrix provides the durable armature switches allowing multiple channels to be connected at one time, up to 60W per channel. The 4-wire wide bus can be used to route signals between test instruments and the device under test. Choose from the durable connector block or standard cable connections.
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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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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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LVDT/RVDT Simulation Board
75DL1
The 75DL1 is a cPCI LVDT/RVDT Simulation Board that provides eight 2-wire or four 4-wire transformer isolated programmable outputs. It provides wrap-around self-test, PXI compatibility, optional Excitation Supply, and is available for Military or Commercial applications.
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VDT/Resolver Simulation Module for SLSC
Bloomy's VDT/Resolver Simulation Module offers eight channels of variable differential transformer (VDT) sensor simulation at an unmatched price point. Its highly-flexible nature allows each channel to be configured independently for simulation of a linear variable differential transformer (LVDT), a rotary variable differential transformer (RVDT), or a resolver. Versatile, separate E1 and E2 returns allow each channel to be connected in a 4-, 5- or 6-wire configuration. The included VeriStand SLSC driver also allows each channel to simulate two 4-wire sensors where shared excitation is acceptable.
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Digital Milliohm Meter
4538 mO
Standard Electric Works Co., Ltd
● 4-Wire method for mΩ measurement.● Measures down to 100µΩ (0.1mΩ).● Maximum resolution of 100µΩ.● 4 Lines × 20 Characters large LCD.● 200 measurement results can be saved in the memory and recalled on the display. ● Auto power off.● 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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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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Banana-Triax Adapter For 2‑Wire (Non-Kelvin) Connection
N1297A
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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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 Dual 12x8 Matrix, 2 Pole Switching
40-522-022
Medium density PXI dual 12x8, 2-pole matrix - it is also available in reed relay formats of 2-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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MAX31855 J-Type Thermocouple Arduino Shield
SEN-30004-J47
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 thermoco...show more -
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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 ...show more -
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Power Analyzers
National Meter Industries Inc.
is a panel mounted multimeter that records energy values. Compact and intuitive, with 4-quadrant measurement (Consumption and Generation). Is suitable for Low Voltage installations, in both 3 and 4-wire three-phase circuits,two-phase circuits with or without neutral, single-phase circuits or ARON connections.
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PXI-2530B, 128-Channel, 1-, 2-, or 4-Wire PXI Multiplexer Switch Module
778572-30
128-Channel, 1-, 2-, or 4-Wire PXI Multiplexer Switch Module—The PXI‑2530B is a high-density, multiconfiguration reed-relay switch. With four multiplexer and three matrix configurations, the PXI‑2530B is an excellent solution for complex or high‑channel‑count systems. Multiplexer configurations include 128x1 (1‑wire), 64x1 (2‑wire), 32x1 (4‑wire), or eight banks of 16x1 (1‑wire). Matrix configurations include 4x32 (1‑wire), 8x16 (1‑wire), or 4x16 (2‑wire). You can implement these configurations by selecting the appropriate terminal block.
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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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3-Slot Data Acquisition Mainframe With GPIB, Three 20-Channel Multiplexer Modules, And BenchVue DAQ Software
DAQ973MBX
The DAQ973MBX Best Multiplexer Bundle offer includes a DAQ973A three-slot data acquisition mainframe, three 20-channel DAQM901A multiplexer modules, and a BV0006B BenchVue DAQ software with a KeysightCare software support subscription. 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...show more -
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I-V Measurement Systems
The I-V Curve Data Acquisition includes a fixture for holding cells for testing (see Figure 1 below). This fixture can accommodate cells from small to up to 100 mm x 100 mm. Adjustable cell stops, in the X & Y-axis, are provided to consistently locate the cells for testing. Two micro-manipulators are provided as shown in Figure 1. Each micro-manipulator has two spring loaded contacts to allow 4-wire measurement even for cells that have top contacts only. Two back-side voltage contacts are em...show more -
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temperature Measurement
Educated Design & Development, Inc.
Up to 8 resistance reading channels, 4-wire methodUp to 12 temperature reading chanels, use of Type K, 24 AWG, Teflon thermocouplesIn the Box:8 - data cable (Cat5e) to connect the isolation modules to the Resistance Reading Channels8 - Isolation Module connected between the HOT-30 and EUT (Equipment Under Test) to isolate high voltage8 - Banana Jack Sets (2 red, 2 black), to replace Kelvin Leads in tight places8 - Kelvin Probe Set12 - 72 inch K Type Thermocouple1 - USB2.0 Type A (standard) to Type B USB cable
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Wound Component EST Analyzer
19036
Chroma Systems Solutions, Inc.
The industry’s first Wound Component Electrical Safety Test (EST) Analyzer that combines impulse winding, AC/DC hipot, insulation resistance and DC resistance test measurement functions. Chroma’s 19036 Wound Component EST Analyzer has 5kVac/ 6kVdc high voltage output, 5kV insulation resistance, 6kV layer short impulse voltage and 4-wire DC resistance measurement with a maximum output of up to 40 channels. Capable of outputting and measuring AC100mA/DC 20mA, Chroma’s 19036 is suitable for testing to high power motor standards such as UL 1004-1.
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P104 LVDT/RVDT Measurement Board
73LD4
NAI’s 73LD4 is a PC104-compliant LVDT/RVDT Measurement Board with six separate transformer-isolated channels. The channels can incorporate up to six programmable LVDT/RVDT-to-Digital Tracking Converters in a stack-through module. Each channel is programmable for 2-, 3-, or 4-wire inputs that automatically range between 2.0 volts and 28 volts, so there is no need to purchase multiple boards set for specific inputs. Operating frequency between 360 Hz and 10 kHz can be specified. Each channel also produces differential incremental encoder (A & B) outputs with programmable resolution and a zero-degree marker pulse.
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Inputs Temperature Data Logger – Pt100
HD32.7
The instrument HD32.7 is a robust 8 inputs data logger for Pt100 sensor temperature probes. The probes can be Pt100 with SICRAM module, direct 4-wire Pt100 or direct 2-wire Pt1000.
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SparkFun Triple Axis Accelerometer Breakout
ADXL345
This new version adds two standoff holes as well as an extra decoupling capacitor. The ADXL345 is a small, thin, low power, 3-axis MEMS accelerometer with high resolution (13-bit) measurement at up to +-16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface.
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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 thermoco...show more -
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PXI/PXIe LVDT/RVDT/Resolver Simulator Module
43-670-XYZ-AABBCC
The 41/43-670 range is ideal for the simulation of variable differential transformers (VDT), both linear (LVDT) and rotary (RVDT) types, as well as resolvers. Available with up to four banks, each bank is 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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- 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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Power Quality Analyzers
3-Phase 4-Wire Power Quality Analyzer Compliant to IEC61000-4-30 Class A Standards with Dynamic 1300V Range, Harmonic and Inter-harmonics Analysis Capabilities
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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 automatic...show more
