4-wire
resistance measurement using an ohmmeter's two each, force and sense leads.
See Also: Resistance
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Product
Process Analyzers
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Knick Elektronische Messgeräte GmbH & Co. KG.
Industrial meters for pH, ORP, conductivity and oxygen. In 2- and 4-wire technology, explosion-proof.Bus Communication: HART, FOUNDATION Fieldbus, Profibus DP and PA. Robust industrial housing with high IP protection. Suitable for outdoor use. For analog and digital sensors. Simple intuitive operation. From DIN rail transmitters up to the modular system.
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Product
Temperature Probe for Outdoor
TP32MT…
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Series of Pt100 1/3 DIN 4-wire or T-type thermocouple temperature probes for outdoor/environmental measurements.
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Product
PXI Matrix Switch: 4x32, 2-Wire, 100Vrms/2A, Armature Relays
M9120A
Matrix Switch Module
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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Product
Kelvin Clip Set
11062A
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Create custom Kelvin probes for 4-wire resistance measurements; set contains only the two gold-plated clips
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Product
Pico-ITX
RSB-3720
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*NXP Arm® Cortex®-A53 i.MX8M Plus Quad/Dual up to 1.8 GHz*Onboard LPDDR4 4 GB / 6 GB, 4000MT/s memory*HDMI 1920x1080 at 60Hz, 1 Single or 1 Dual Channel 24 bit LVDS (or 1 4-Lane MIPI-DSI by BOM Option)*1 4-wire RS-232/422/485, 1 USB3.2 Gen1 By 1, 1 USB2.0, 1 Micro SD, 1 Mic. in / Line out*1 mini-PCIe for 3G/4G, 1 M.2 2230 Key E Slot*Supports Windows 10 IoT Enterprise on Arm, Yocto Linux BSP*Support I/O Expansions boards by UIO40-Express*Support Hailo-8™ AI accelerator module (up to 26TOPS)
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Product
Triangular Array
W8AV
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We have under-rated the power this system can handle to assure the user high reliability under heavy use such as in a 48 hour radio contest. Please contact us if you have any questions about the product and please send a picture and description of your station showing the Triangle Array control system installed and in use.The W8AV system has two components: a relay box that will be mounted midway between the three verticals and a control box that is connected with a 4-wire control cable inside the operating room.
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Product
PXIe-4140, 4-Channel Source Measure Unit
781742-01
Source Measure Unit
The PXIe-4140 is a 4-channel source measure unit (SMU) ideal for high-pin-count applications. It features 4-quadrant operation, and each channel has integrated remote (4-wire) sensing for accurate measurements. The fast sample rate of the PXIe-4140 can reduce measurement times, capture transient device characteristics, and allow quick I V characterization of devices under test (DUTs). With a high-speed sequencing engine, you can synchronize all these SMUs with each other or with other instruments such as switches or high-speed digital test modules.
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Product
Resistance Measuring Equipment
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measure coil winding resistance of motors, transformers, etc, under energizing AC voltage. The direct reading is possible with 4-wire measurement method, and temperature of specimens is immediately calculated from measured resistance values and displayed. Ambient temperature is automatically taken in by connecting an option sensor Model DAC-PT-100.
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Product
Rugged Igniter Tester
4314 KV
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Model 4314 KV is a 4-wire ohmmeter designed to use low test currents for its measurement. Additional circuitry proprietary to Valhalla Scientific is used to ensure that test current levels do not exceed the specified “fail-safe current” even in a worst-case component failure situation.
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Product
MAX31855 K-Type Thermocouple Arduino Shield
SEN-30004-K03
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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. The MAX31855K supports a measured temperature range of -270C-1372C 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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Product
Multi Function Coil Tester
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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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Product
3-Slot Data Acquisition Mainframe With Three 20-Channel Multiplexer Modules
DAQ970MB
Mainframe
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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Product
PXI Dual 12x8 Matrix, 1 Pole Switching
40-522-021
Matrix Switch Module
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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Product
PXI Digital Multimeter, 6 digit, Enhanced Performance
M9183A
Digital Multimeter
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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Product
6.5 Digit PXI Digital Multimeters
M918xA Series
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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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Product
Dual Channel Multi-Band FM Tracking/Data Receiver In Modular Style Housing
LS-27-B
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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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Product
Ground Resistance Tester
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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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Product
Transformer Winding Resistance Meter
XWRM-10
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The Motwane Manufacturing Company
The Motwane make XWRM-10 is a dual channel 10A rated, Transformer Winding Resistance Meter designed and developed aftere xtensive research on challenges and requirements of testing of various Transformer winding resistance. The instrument has One Current channel and two Resistance Channels. The instrument provides a large open circuit voltage of 42Volts, for fast charging of the highly inductive windings of transformers, to provide stable resistance values in minimum time. The XWRM-10 is intended to replace complex bridge set up with a single compact instrumentThe XWRM-10 is based on 4-wire measurement methodto measure low resistance accurately. The instrument iswell protected against inductive kickbacks offered by theinductive windings and gives stable reading on varioustypes of transformers.
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Product
Modbus Register Converter
Model 2390
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* 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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Product
PXI/PXIe LVDT/RVDT Simulator Module, 4-Banks
41-670-101-AABBCC
Simulator
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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Product
MAX31855 K-Type Thermocouple Arduino Shield
SEN-30004-K47
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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. The MAX31855K supports a measured temperature range of -270C-1372C 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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Product
Contact Probe for Solar Panels
TP878.1SS.O
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Contact temperature probe for solar panel. 1/3 DIN 4-wire Pt100 sensor.
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Product
MAX31856 Thermocouple Sensor Arduino Shield
SEN-30007-K
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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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Product
LVDT/RVDT Simulation Board
75DL1
Simulator
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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Product
Wound Component EST Analyzer
19036
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Chroma 19036 is the industry's first wound component electrical safety test (EST) analyzer that combines the functions of impulse test, hipot, insulation resistance and DC resistance measurements. It has 5kVac/ 6kVdc high voltage output, 5kV insulation resistance, 6kV layer short impulse voltage and 4-wire DC resistance measurement that can comply with the wound components test demands by providing maximum 10 channels output for multichannel scanning tests to save time and labor costs.
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Product
RS232 / RS485 / RS422 / Ethernet Surge Protectors
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Our passive, rugged, industrial-grade RS232 / RS485 / RS422 / Ethernet surge protectors are designed for direct industrial DIN-rail mounting and they come with two (2) or three (3) stages of surge protection — Gas Discharge Tube (GDT), protection resistors, and Transient Voltage Suppressor (TVS) - for maximum protection. From 2-wire RS485, 4-wire RS422 / RS485, to 10 / 100 / 1000M Ethernet, CommFront's surge protectors safeguard your data lines and provide you with a peace of mind.
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Product
RTD Measurement for PCI
PCI390
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The PCI390 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. Sensor-data is available in °C, °F, K and Ohms. All inputs are optically isolated from the system.
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Product
PXI/PXIe LVDT/RVDT Simulator Module, 2-Banks
41-670-103-AABBCC
Simulator
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. 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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Product
PXIe-4142, 4-Channel, ±24 V, 150 mA PXI Source Measure Unit
782430-01
Source Measure Unit
PXIe, 4-Channel, ±24 V, 150 mA PXI Source Measure Unit - The PXIe-4142 is a 4-channel source measure unit (SMU) ideal for high-pin-count applications. It features 4-quadrant operation, and each channel has integrated remote (4-wire) sensing for accurate measurements. The fast sample rate of the PXIe-4142 can reduce measurement times, capture transient device characteristics, and allow quick I V characterization of devices under test (DUTs). With a high-speed sequencing engine, you can synchronize all these SMUs with each other or with other instruments such as switches or high-speed digital test modules.
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Product
PXI Digital Multimeter
Digital Multimeter
PXI Digital Multimeters, or DMMs, feature AC/DC voltage, AC/DC current, 2- or 4-wire resistance, and frequency/period measurements, as well as diode tests. You can also choose a PXI DMM with an isolated, high-voltage digitizer that can acquire waveforms at sample rates up to 1.8 MS/s at full input range, up to 3 A or 1,000 V. Additionally, you can choose a PXI DMM that can perform basic inductance and capacitance measurements.
