New dedicated low resistance meter introduced
11 February 2004
Test & Measurement
A dedicated low resistance meter, Quad Tech's LR2000 Milliohmmeter for making low resistance measurements on switches, relays, connectors and cables, has eight measurement ranges, starting at 1 µ resolution to 2 M, with constant current between 1 A and 1 µA. For 'dry' contact measurements the LR2000 can be limited to 20 mV on selected measurement ranges.
The LR2000 comes standard with an RS232 interface for remote operation and production applications; IEEE-488 and handler interfaces are also available as options. For measurement integrity, contact to the test device is made via a 4-terminal Kelvin connection that incorporates an automatic zeroing function to compensate for lead errors.
With a wide measurement range there are eight measurement ranges extending from 20 mΩ to 2 MΩ (constant current between 1 A and 1 µA). For 'dry' contact measurements (contacts whose resistance can be altered by excessive voltage potential) the LR2000 can be limited to 20 mV on selected measurement ranges.
Besides the standard DC test signal, the LR2000 provides a signal reversal mode for eliminating thermal EMFs, and a pulsed current mode for minimising errors caused by device heating. With a basic measurement accuracy of 0,05% the instrument has three measure modes: 15, 6 and 1,5 measurements per second with varying degrees of accuracy. The graphical display is a 240 x 64 dot matrix graphical LCD for user-friendly menu programming and results display. An automatic zeroing function reduces the effects of lead resistance through the front panel 4-terminal Kelvin connection.
In addition there is a programmable Hi/Lo comparator function (Pass/Fail Testing) in 'absolute value' or '%', as well as eight sorting bins for categorisation of components. For remote control, or adaptation to a production type environment, the LR2000 includes an RS232 interface standard. An IEEE-488 and handler interface are available as an option.
For more information contact Van Zyl Koegelenberg, Spescom MeasureGraph, 011 266 1572.
Further reading:
hybridNETBOX instrumentation platform
Vepac Electronics
Test & Measurement
The hybridNETBOX from Spectrum Instrumentation is an innovative instrumentation platform that combines a multi-channel arbitrary waveform generator (AWG) and a digitiser in a single portable unit.
Read more...
14-bit AWG at 20 GS/s
Vepac Electronics
Test & Measurement
The Arb Rider AWG-7000 is the world’s fastest 14-bit Arbitrary Waveform Generator, featuring a 20 GS/s real time update rate and 14-bit vertical resolution.
Read more...
Additions to APD5000 series oscilloscopes
Osiris Technical Systems
Test & Measurement
Each unit is equipped with an integrated CAT II digital multimeter, three programmable power supplies, a dedicated trigger line, and an arbitrary waveform generator.
Read more...
Handheld RTSA up to 9,5 GHz
Vepac Electronics
Test & Measurement
The PXE-90 implements an FFT engine on the built-in FPGA and support frame compression with trace detection while ensuring no missing samples between FFT frames.
Read more...
InterCal introduces a new range of calibrators
Intercal
Test & Measurement
Calibration is a critical process in numerous industries, from manufacturing to healthcare, ensuring that instruments and devices provide accurate and reliable measurements.
Read more...
Power Energy Meter for solar projects
Mimic Components
Test & Measurement
The Mi550 Power Energy Meter is a handheld three-phase power quality analyser that connects externally with Rogowski coils or voltage-type CTs, allowing for testing without disconnection.
Read more...
MT8870A for NTN NB-IoT testing
Tamashi Technology Investments
Test & Measurement
Samsung Electronics has selected the Anritsu Universal Wireless Test Set MT8870A for use on the mass-production lines of the Galaxy S25.
Read more...
XJLink-PF40 JTAG controller
ASIC Design Services
Test & Measurement
XJTAG, a specialist in electronic testing, has released its new XJLink-PF40 JTAG controller together with version 4 of its popular PCB software testing suite.
Read more...
INTEGRA Biosciences’ reagent dispenser now supports SiLA-2 integration
Test & Measurement
This new functionality will make it even easier to integrate the WELLJET into automated laboratory workflows, helping labs to enhance their productivity and reproducibility.
Read more...
Advanced portable spectrum analyser
Vepac Electronics
Test & Measurement
HAROGIC has introduced the SAE-200, a USB-based real-time spectrum analyser that operates from 9 to 20 GHz with a 100 MHz bandwidth.
Read more...
printer friendly version