Summary of Contents for NDB Technologies LRM-10
- Page 1 NDB TECHNOLOGIES INC. LRM-10 micro-ohmmeter MU033-GEN-ENG Version 1.4 LRM-10 User Manual...
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Page 2: Table Of Contents
L R M - 1 0 – U s e r M a n u a l Table of Contents Contact Us ........................3 Safety Warnings ......................3 Safety Symbols ....................... 3 Safety Precautions ....................4 Introduction ....................... 4 Kit content ......................... 4 Technical specifications ..................... -
Page 3: Contact Us
Safety Warnings Follow all the safety rules to avoid dangerous electric shocks. Only properly trained personnel should use the LRM-10 micro-ohmmeter. Safety is the responsibility of the user. Read all safety and operating instructions before to use the equipment. -
Page 4: Safety Precautions
Introduction The LRM-10 is a high precision micro-ohmmeter that can be paired with a great variety of accessories. Many applications are available such as low resistance measurement on circuit breakers, soldering, connectors, wires, metal plates, battery inter-cell connections, Cadweld®... -
Page 5: Technical Specifications
Dimensions 203 x 114 x 51 mm *Using the instrument below 0°C shortens the battery duration time. Cable length can also affect battery duration time. The instrument’s accuracy remains unaffected. LRM-10 – Scales Measurement Common mode reject Scale Current Scale Error... -
Page 6: Overview
M a n u a l Overview The figure below shows an overview of the LRM-10 features. 1. Probe connector: Allows the user to connect a probe to the LRM-10 micro-ohmmeter. 2. Charger & RS232 communication port: Allows charging the batteries and transferring the measurement data to a computer. -
Page 7: Settings
Press the MODE button to select the parameter to set. Frequency: Select the electric network frequency where the LRM-10 micro-ohmmeter will be used (50Hz or 60Hz). This feature allows a reduction of the reading errors due to nearby electromagnetic induction on the test leads. -
Page 8: Operation
U s e r M a n u a l Operation Connect the test leads to the LRM-10 micro-ohmmeter. Make sure to connect each lead in the proper connector of the same color, on the LRM-10 micro-ohmmeter. The yellow and green clips are installed to both extremity of the device under test. - Page 9 The result is shown on the display, see the above figure. To manually start a new measurement, press the GO button. If the LRM-10 detects a bad connection, the ‘’BAD CONNECTION’’ error message will be displayed. In this case, check the quality of contact of each clip.
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Page 10: Modes
After the reading is taken in the standard mode, press the MODE button until you reach the OK/X mode, then take a new measurement by pressing the GO button. If the new reading is lower than the reading from the standard mode, the LRM-10 displays OK, otherwise, it displays X. -
Page 11: Start A New Measurement
Another way to start a new measurement is to momentarily (~1 sec) short the blue and green connectors. This feature allows the integration of the LRM-10 micro-ohmmeter in a more complex system where it could be controlled, for example, by a computer or an N/O (normally open) switch. - Page 12 (Cadweld test) Sample resistance 9.5 DRM-4013 micro-ohm Temporary ground GET-40 cable test set Torque wrench and GET-401 socket for GET-40 Data transfer kit (cable XDP-103 and and RS232 to USB XDP-104 converter) Battery replacement NDB-BAT kit for LRM-10...
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Page 13: Dual Hands Probes
L R M - 1 0 – U s e r M a n u a l Dual hands probes The DRM-4015 and LRM-4015HD probes are easy to use on any metallic surface. Their spring loaded tips allows a good electrical contact on the conductor to test. -
Page 14: Kelvin Clamp Probes
DRM-4015-2MM installed on a DRM-4015 probe: Kelvin clamp probes The DRM-4017-19 and DRM-4017-35 kelvin probes are used with the LRM-10 micro-ohmmeter to measure resistance on cables, rods, or any other metallic surface. They integrate the four terminals measurement technique. -
Page 15: Exothermic Cadweld® Probe
Exothermic Cadweld® probe The DRM-4012 probe is designed to allow testing Cadweld® exothermic welding with the LRM-10 micro-ohmmeter. Its special design allows repeatable readings and easy handling. Note: A sample resistor may be used to test Cadweld® welding in relative mode. -
Page 16: Temporary Grounding Jumper Tester
L R M - 1 0 – U s e r M a n u a l Temporary grounding jumper tester The GET-40 device is an easy-to-use and accurate Grounding Jumper Tester using four points measuring method. The micro-ohmmeter is installed on top of the GET-40, and the test cables are connected on top of it. -
Page 17: Resistor Sample
M a n u a l Resistor sample Resistor samples are available to facilitate the use of the LRM-10 micro- ohmmeter in relative mode. The sample is used to take the initial measurement and to set the reference value. Then, the instrument can be used to measure the unit(s) under test in the relative mode. -
Page 18: Protection And Transport
Protection and transport The DRM-4014 nylon mesh bag and NDB-HSC transportation case are designed to protect the LRM-10 micro-ohmmeter from on water, dirt and impacts that could damage the instrument. Using such protection is suggested to preserve your LRM-10 micro-ohmmeter. -
Page 19: Data Transfer
U s e r M a n u a l Data transfer The LRM-10 features the capability to send reading data to a computer using its serial communication port (the same connector is also used to charge the batteries). ... - Page 20 L R M - 1 0 – U s e r M a n u a l Start the serial communication software of your choice. Start taking measurement on the LRM-10 micro-ohmmeter, the values are shown on the serial communication software.
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Page 21: Batteries
U s e r M a n u a l Batteries The LRM-10 micro-ohmmeter uses six AA type NiMH rechargeable batteries. It is recommends to always use the battery model sold by ndb Technologies. The charging circuit was designed to charge this specific battery model. Attempting to use any other battery model could result in permanent damage of the instrument and/or the batteries.