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Home Test and Measurements LOM-510A MICRO-OHMMETER
Illuminance, UV Intensity, Temperature, Humidity RTR-574
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Illuminance, UV Intensity, Temperature, Humidity RTR-574-S
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IET Labs, Inc

LOM-510A MICRO-OHMMETER

Brand

IET Labs, Inc

Sub Categories

Electric & Electronic Test and Measurements

Application

Micro-Ohmmeter

Category: Test and Measurements
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  • GENERAL
  • DESCRIPTION
  • SPECIFICATION
  • DATASHEET AND MANUAL
  • ACCESSORIES
GENERAL

GENERAL

  • 1 μΩ resolution, 4½ digits
  • Range: 1 μΩ – 200 Ω
  • 0.02% basic accuracy
  • Costs around 50% less then its peer instruments
  • 4-Wire Design to eliminate lead resistance
  • Pulsed mode for auto-zero or constant dc
  • Choices of Probes for all applications
  • Independent review of the LOM-510A against the considerably more expensive competition Scroll down to see graph
DESCRIPTION

DESCRIPTION

The LOM-510A Micro-Ohmmeter is a dedicated low resistance meter, useful wherever there is a need for measuring very low values of resistance. The LOM-510A is far superior, to general purpose and even higher end bench multimeters that utilize 4 terminal connections, when measuring resistances below 1 ohm.

The Micro-Ohmmeter has 4½ digits, 0.02% basic accuracy and 1 μΩ resolution. The 4-terminal kelvin measurement connection minimizes lead resistance errors and 80 dB of ac noise rejection provides rock-steady readings even in noisy locations. The micro-ohmmeter comes with rugged 4-terminal test clips and a large selection of optional probes, clips and fixtures allowing attachment to any low-resistance unknown.

The highest range of 200 ohms full scale on the LOM-510A is close to the lowest range on general purpose 4 1/2 digit multimeters and ohmmeters. Generally, the measurement range of the Model 510A begins where the general purpose instruments end.

A significant feature of the LOM-510A Micro-ohmmeter is the three separate component drive modes. The combination of good basic accuracy and selectable drive modes makes the LOM-510A a highly useful and accurate resistance measuring instrument. The Switched DC Mode totally eliminates the effects of thermal EMF, a very important source of error. The Continuous DC Mode is required when measuring the resistance of highly inductive components such as transformers. The Pulsed Mode is important when measuring heat sensitive components such as thermistors.

In addition, the Model 510A can perform “dry circuit” measurements. This measurement mode is useful when measuring the contact resistance of low level switches. Several MIL specs require “dry circuit” measurements of certain switch types.

LOM-510A Micro-Ohmmeter Applications:

  • Fuse Testing
  • Switch or Relay Contact Resistance Measurement
  • Electrical Motor Winding Resistance
  • Cable Resistance
SPECIFICATION

SPECIFICATION

LOM-510A MICRO-OHMMETER BASIC SPECIFICATIONS

(See datasheet for full specifications)

Min Resistance
Range (Full Scale)
Drive
Max Dissipation
DC
SW
1 μΩ
19.999 mΩ
1 A
20 mW
5.0 mW
10 μΩ
199.99 mΩ
0.1 A
2.0 mW
.50 mW
100 μΩ
1.9999 Ω
10 mA
.2 mW
.05 mW
1 mΩ
19.999 Ω
1 mA
.02 mW
5  μW
10 mΩ
199.99 Ω
0.1 mA
.002 mW
0.5  μW

Accuracy

 (SW)(Switched dc)  DC(Continuous dc)  Pulsed Mode
 0.02% + 2 counts +2 μΩ  0.04% + 2 counts + 2 μΩ (Typical)  0.02% + 4 counts + 2 μΩ
DATASHEET AND MANUAL

DATASHEET AND MANUAL

  • Data Sheet: This document explains the features, options, Specifications and option models for this item.
  • Product Manual: Specifications and option models for this item. This document contains the technical product manual and guidelines.
ACCESSORIES

ACCESSORIES

ISO-17025 Accredited Calibration with Test Data

ISO-17025 ACCREDITED CALIBRATION WITH TEST DATA

LOM-501C Kelvin Clips

LOM-501C 4-TERMINAL GENERAL PURPOSE KELVIN CLIP 1 METER

LOM-501TF Discrete Component Test Fixture

LOM-501TF TEST FIXTURE FOR DISCRETE COMPONENT
LOM-501U - LOM-501C with Unterminated Cable

LOM-501U – LOM-501C WITH UNTERMINATED CABLE

LOM-501W Wide Opening Kelvin Clips

LOM-501W WIDE OPENING KELVIN CLIP
LOM-502C Replacement Clips for LOM-501C

LOM-502C REPLACEMENT CLIPS FOR LOM-501C
LOM-504 4-Terminal Heavy Duty Kelvin Clip

LOM-504 4-TERMINAL HEAVY DUTY KELVIN CLIP
Microprobes

LOM-506 4-TERMINAL KELVIN MICROPROBE
LOM-530 Microohmmeter Calibration Kit for LOM-510A

LOM-530 MICRO-OHMMETER CALIBRATION KIT
NIST Traceable Calibration Cert (Included)

NIST TRACEABLE CALIBRATION CERT (INCLUDED)

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