2-wire
resistance measurement method.
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TB-2635, Screw Terminal, 8x16, 2-Wire PXI Module Matrix Terminal Block
778839-01
Screw Terminal, 8x16, 2-Wire PXI Module Matrix Terminal Block - The TB-2635 provides the necessary routing to configure the PXI-2529 PXI Matrix Switch Module as a 2-wire 8×16 matrix. You can directly connect the TB-2635 to the front panel I/O connectors of the PXI-2529. The TB-2635 includes screw terminals that provide access to the rows and columns of the matrix.
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SWB-2814, 8x9, 1 A, 2-Wire Reed Matrix Module for SwitchBlock
781421-14
8x9, 1 A, 2-Wire Reed Matrix Module for SwitchBlock - The SWB‑2814 is a reed relay matrix module for SwitchBlock systems. Designed for high power, it can operate as an individual relay card or expand in a single carrier or single PXI chassis. You can connect any input to any output, individually or in combination. You can use matrix switches to route signals from oscilloscopes, DMMs, arbitrary waveform generators, and power supplies to various test points on a unit under test (UUT). The primary benefit of matrix switches is simplified wiring—the overall test system can easily and dynamically change the internal connection path without any external manual intervention.
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2-Wire Bus Buffers
Renesas' 2-wire bus buffers are designed to improve data transmission speed on SMBus or similar 2-wire serial bus interfaces.
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SWB-2813, 4x21, 1 A, 2-Wire Reed Matrix Module for SwitchBlock
781420-13
4x21, 1 A, 2-Wire Reed Matrix Module for SwitchBlock - The SWB‑2813 is a reed relay matrix module for SwitchBlock systems. Designed for high power, it can operate as an individual relay card or expand in a single carrier or single PXI chassis. You can connect any input to any output, individually or in combination. You can use matrix switches to route signals from oscilloscopes, DMMs, arbitrary waveform generators, and power supplies to various test points on a unit under test (UUT). The primary benefit of matrix switches is simplified wiring—the overall test system can easily and dynamically change the internal connection path without any external manual intervention.
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SWB-2814, 8x9, 1 A, 2-Wire Reed Matrix Module for SwitchBlock
781420-14
8x9, 1 A, 2-Wire Reed Matrix Module for SwitchBlock - The SWB‑2814 is a reed relay matrix module for SwitchBlock systems. Designed for high power, it can operate as an individual relay card or expand in a single carrier or single PXI chassis. You can connect any input to any output, individually or in combination. You can use matrix switches to route signals from oscilloscopes, DMMs, arbitrary waveform generators, and power supplies to various test points on a unit under test (UUT). The primary benefit of matrix switches is simplified wiring—the overall test system can easily and dynamically change the internal connection path without any external manual intervention.
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PXI High Density Multiplexer: 99-ch, 2-Wire, 100Vrms/1A, Armature Relays
M9103A
The M9103A, a high-density, high-power 99-channel multiplexer routes many different channels to a single point. The switches operate in a break-before-make mode that ensures no two points are connected at the same time, or multiple channels can simultaneously connect if needed. This module is ideal for routing multiple analog signals to a measurement device in an automated test environment (ATE) or data acquisition systems. Each channel switch has a high and low for 2-wire switching. The high-quality armature relays are capable of switching up to 100Vrms, with up to 60W of power. Choose from the durable connector block or standard cable connections.
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PXI-2529, 128-Crosspoint, 2-Wire PXI Matrix Switch Module
778739-01
The PXI‑2529 is a high‐density PXI matrix switch module that you can configure as either a 4x32 or 8x16 2‑wire matrix by using different terminal block accessories. It uses electromechanical relays that offer excellent performance for high-power signals and low thermal offset for accurate measurements at low-voltage levels. The PXI‑2529 also features onboard relay counting for relay monitoring and deterministic operation with hardware triggers to improve test throughput.
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NI TB-2644B Terminal Block for NI 2532B as 1-Wire Dual 8x32 Matrix or 2-Wire 8×32 Matrix Topology Without Column Protection Resistors
782385-09
The TB-2644B provides the necessary routing to configure the PXI-2532B or PXIe-2532B PXI Matrix Switch Module as a 2-wire 8x32 or 1-wire dual 8x32 matrix. You can directly connect the TB-2644B to the front panel I/O connectors of the PXI-2532B or PXIe-2532B. This terminal block includes ribbon cable headers to connect signals to the PXI Matrix Switch Module. The TB-2644B also provides optional isolation resistors to protect the reed relays from capacitive loads.
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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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PXIe-2529, 128-Crosspoint, 4x32 OR 8x16, 2-Wire PXI Matrix Switch Module
780587-29
128-Crosspoint, 2-Wire PXI Matrix Switch Module—The PXIe‑2529 is a high‐density PXI matrix switch module that you can configure as either a 4x32 or an 8x16 2‑wire matrix by using different terminal block accessories. It uses electromechanical relays that offer excellent performance for high-power signals and low thermal offset for accurate measurements at low-voltage levels. The PXIe‑2529 also features onboard relay counting for relay monitoring and deterministic operation with hardware triggers to improve test throughput.
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TB-2636, Screw Terminal, 4x32, 2-Wire PXI Module Matrix Terminal Block
196762-01
The TB-2636 provides the necessary routing to configure the PXI-2529 PXI Matrix Switch Module as a 2-wire 4×32 matrix. You can directly connect the TB-2636 to the front panel I/O connectors of the PXI-2529. The TB-2636 includes screw terminals that provide access to the rows and columns of the matrix.
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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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4 Wire Earth Resistance & Resistivity Tester
4235 ER
Standard Electric Works Co., Ltd
● Microprocessor-controlled.● Earth resistivity (ρ) test.● Earth testing at 20Ω, 200Ω, 2kΩ.● Earth voltage measuring : 0-300V AC.● Automatic C spike check.● Automatic P spike check.● 2-Wire test, 3-Wire test, 4-Wire test.● LCM display.● Auto ranging.● Auto power OFF.● Data hold.● 200 measurement results can be saved in the memory and recalled on the display.● Interval between auxiliary earth spikes is 1.0~50.0m.
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Industrial Grade PCI DIO 96 Board
MS 1817
*96 digital input/output lines*Support s all PPI Modes (Mode0, Mode 1 and Mode 2)*5 V TTL/CMOS*Compatible with NI DIO Card*2-wire handshaking capability*Known power-up
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Cable and Harness Tester
CHT
The Cable and Harness Tester (CHT) provides multiple testing capabilities for up to 300 connector/harness test points. Test capabilities include DC Insulation Resistance (IR), DC and AC Dielectric Withstanding Voltage (DWV), and 2-Wire and 4-Wire Continuity.
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RS-485 and RS-422 Transceivers
The RS-485 specification meets the requirements for a truly multipoint communications network, and the standard specifies up to 32 drivers and 32 receivers on a single (2-wire) bus. Some RS-485 transceivers modify the input impedance to allow up to 8× more nodes to be connected to the same bus. Analog Devices offers a wide range of standard RS-485/RS-422 transceivers and iCoupler® isolated RS-485/RS-422 transceivers to suit many applications.
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Serial Interface Device
The Serial Interface Device offers a number of options for connecting to serial hardware. You can choose from Ethernet, USB, PCI, PCIe, or ExpressCard interfaces to add up to 16 serial ports to your system. You can choose from common serial protocols, such as RS232, RS422, and RS485. The Serial Interface Device also offers various isolation, hyperthreading, and multiprocessor compatibility options. Some models also support 4- and 2-wire transceiver modes for full- and half-duplex communication. NI serial interfaces also appear as standard COM ports for compatibility with programs that use serial communications.
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Interface Technology ProLine
Knick Elektronische Messgeräte GmbH & Co. KG.
Isolation Amplifier for DC voltage and current measurement with galvanic isolation, active and passive standard signal isolation amplifier, supply isolation amplifier for supplying 2-wire sensors, transmitter for temperature and AC signals, isolating amplifiers for high voltages and shunt applications. T
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Switch Mainframe
SW1002
Switch between voltmeter and battery tester while testing. 264 channels max. (2-wire) to 72 channels max. (4-terminal pair). Circuit design friendly for impedance measurements that minimize errors between channels (Effect: 0.01% f.s.*). For BT4560 100 mΩ range, R measurements, and a measurement frequency of 1 kHz. For OCV measurement, internal resistance measurement, and external potential measurement of battery cells. Measure battery modules up to 60 V DC.
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NI TB-2645B Terminal Block for NI 2532B as 1-Wire Dual 16x16 Matrix or 2-Wire 16×16 Matrix Topology Without Column Protection Resistors
782385-11
The TB-2645B provides the necessary routing to configure the PXI-2532B or PXIe-2532B PXI Matrix Switch Module as a 2-wire 16x16 or 1-wire dual 16x16 matrix. You can directly connect the TB-2645B to the front panel I/O connectors of the PXI-2532B or PXIe-2532B. This terminal block includes ribbon cable headers to connect signals to the PXI Matrix Switch Module. The TB-2645B also provides optional isolation resistors to protect the reed relays from capacitive loads.
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Sensor Tester
*Connection facilities for DC 2-wire and 3-wire sensors, *Change in switching status signalled visually and acoustically, * 15 V operating voltage for sensors when using a 9 V block battery, * Switches off automatically when not in use, * Visual indicator for operating voltage, switching status and low battery
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External Temperature for PT100 Probe
TGP-4104
This data logger uses an external PT100 probe to record high temperatures. Probes are available to measure up to 300 and 600C. These are listed in the 'You will also need' section. The PT100 probes are of 3-wire construction and use class A elements, making them more accurate than their 2-wire predecessors.
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Signal Conditioners
Process transmitters isolate, filter amplify, and convert sensor signals to 4-20mA current or 0-10V voltage signals for interfacing with controllers and other instrumentation. Select from 2-wire loop-powered 4-20mA transmitters, 3-wire DC-powered transmitters, or 4-wire AC/DC-powered transmitters. 3-wire and 4-wire models are available as 4-20mA transmitters or voltage transmitters. DIN-rail and field-mount version are available. Configuration is easy with Windows software, push-buttons, switches, or pots for span/zero settings depending on the series.
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PXIe-2737, 256-Crosspoint, 4x64, 2-Wire PXI Matrix Switch Module
782835-37
256-Crosspoint, 4x64, 2-Wire PXI Matrix Switch Module—The PXIe‑2737 is a high‐density 4x64 PXI matrix switch module designed for routing signals within automated test systems and using electromechanical relays to perform immediate switch operations. It also offers features to monitor the health of deployed systems and plan for predictive maintenance, including onboard relay count tracking, a temperature sensor, and functional and resistive relay self-tests available through the NI Switch Health Center.
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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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4 Wire Earth Resistance Testers
4234 ER
Standard Electric Works Co., Ltd
● Microprocessor-controlled.● Earth testing at 2Ω, 20Ω, 200Ω, 2kΩ.● Earth voltage measuring : 0-300V AC.● Automatic C spike check.● Automatic P spike check.● 2-Wire test.● 3-Wire test.● 4-Wire test.● LCM display.● Auto ranging.● Auto power OFF.● Data hold.● Robust, compact and easy-to-carry.
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NI TB-2644B Terminal Block for NI 2532B as 1-Wire Dual 8x32 Matrix or 2-Wire 8×32 Matrix topology With Column Protection Resistors
782385-10
The TB-2644B provides the necessary routing to configure the PXI-2532B or PXIe-2532B PXI Matrix Switch Module as a 2-wire 8x32 or 1-wire dual 8x32 matrix. You can directly connect the TB-2644B to the front panel I/O connectors of the PXI-2532B or PXIe-2532B. This terminal block includes ribbon cable headers to connect signals to the PXI Matrix Switch Module. The TB-2644B also provides optional isolation resistors to protect the reed relays from capacitive loads.
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NI TB-2646B Terminal Block for NI 2532B as 1-Wire Quad 4x32 or 2-Wire Dual 4×32 Matrix Matrix Topology Without Column Protection Resistors
782385-13
The TB-2646B provides the necessary routing to configure the PXI-2532B or PXIe-2532B PXI Matrix Switch Module as a 2-wire dual 4x32 or 1-wire quad 4x32 matrix. You can directly connect the TB-2646B to the front panel I/O connectors of the PXI-2532B or PXIe-2532B. This terminal block includes ribbon cable headers to connect signals to the PXI Matrix Switch Module. The TB-2646B also provides optional isolation resistors to protect the reed relays from capacitive loads.
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External Temperature for 3-wire PT1000 Probe
TGP-4204
PT1000 probes are available with this logger that will record down to -200C, making them suitable for cryogenic applications. The probes are of 3-wire construction and use class A elements, making them more accurate than their 2-wire predecessors.
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Emergency/Panic Button
ENVIROMUX-EBS
Sends activation signal when button is pressed. For normally closed or normally open circuit connections. 2-wire interface. Screw terminal. Maximum cable length: 1,000 ft (305 m). Dimensions WxDxH: 1.7x2.9x4.6 in (43x74x117 mm). Regulatory approvals: RoHS.
