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LR Series LR2000 Milliohmmeter
A Precision Low Resistance Meter
USES:
Introduction
· Production Testing of Contact Resistance
The QuadTech LR2000 Milliohmmeter with its LCD display and menu type
of Switches, Relays, Connectors, Cables,
front panel programming assures that low resistance measurements on switch-
and Other Low Resistance Devices
es, relays, connectors, cables, and other devices can be made quick and easy.
· Testing of Low Value Resistors, Fuses, With a basic accuracy of 0.05% the instrument offers a wide measurement
Squibs, and Heating Elements range from 1µohm to 2Mohms. For remote operation and production appli-
cations the unit comes standard with an RS-232 interface, plus IEEE-488 and
· Winding Resistance of Motors,
handler interfaces are available as options. For measurement integrity, contact
Transformers, Solenoids, and Ballasts
to the test device is made via a 4-terminal Kelvin connection that incorporates
· Conductivity Evaluation in Product an automatic zeroing function to compensate for lead errors.
Design Description
· Incoming Inspection and Quality Wide Measurement Range: Eight measurement ranges from 20m to 2M
Assurance Testing with constant current between 1A and 1µA. For "dry" contact measurements
(those contacts whose resistance can be altered by excessive voltage potential)
FEATURES: the LR2000 can be limited to 20mV on selected measurement ranges.
Test Signal: Besides the standard DC test signal, the LR2000 provides a signal
· 1µ - 2M Measurement Range
reversal mode for eliminating thermal EMF's, and pulsed current mode for
· 1µA - 1A Constant Current minimizing errors caused by device heating.
· 0.05% Basic Measurement Accuracy Precision Measurements: With a basic measurement accuracy of 0.05% the
instrument makes for consistent, reliable test results.
· Measurement Speed to 15/second
Graphical Display: 240 x 64 dot matrix graphical LCD display for user friend-
· Graphical LCD Display ly menu programming and display of measured results.
· Four Terminal Kelvin Connection Measurement Rate: Three measure modes of 15, 6 and 1.5 measurements per
· Automatic Zeroing second with varying degrees of accuracy.
· RS-232 Interface Standard Pass/Fail Testing: Provides a programmable Hi/Lo comparator function in
absolute value or %, as well as 8 sorting bins for categorization of components.
· IEEE and Handler Interfaces, Optional
Zeroing: An automatic zeroing functions reduces the effects of lead resistance
· Automatic Hi/Lo Comparator Limits through the front panel 4-terminal Kelvin connection.
· Pass/Fail Sorting (8 Bins) Interfaces: For remote control, or adaptation to a production type environ-
· Voltage Limiting for Dry Contact Testing ment, the LR2000 includes an RS-232 interface standard. An IEEE-488 and
Handler interface are available as an option.
· Keypad Lockout
· Programmable Delay Times
CompuMess Elektronik GmbH
Lise-Meitner-Str.1, 85716 Unterschleissheim
Tel 089-321501-0 Fax 089-321501-11
http://www.compumess.de oder http://www.netzteile.de
HIPOT · LCR METERS · MEGOHMMETERS · MILLIOHMMETERS
LR2000 Milliohmmeter Features
Resistance Range:
Range F.S. Resolution Accuracy Test I (Typical)
20m 1µ ±(0.1% of rdg + .006m) 1A
200m 10µ ±(0.05% of rdg + .06m) 100mA
2 100µ ±(0.05% of rdg + .6m) 10mA
20 1m ±(0.05% of rdg + 6m) 1mA
200 10m ±(0.05% of rdg + 40m) 1mA
2k 100m ±(0.05% of rdg + .2) 1mA
20k 1 ±(0.1% of rdg + 2) 100µA
200k 10 ±(0.2% of rdg + 20) 10µA
2M 100 ±(0.4% of rdg + 200) 1µA
Test Signal: Modes: DC+, DC-, Pulse+, Pulse-, Dimensions: (w x h x d): 12.5 x 4.0 x 13.5in
Pulse+/- and STBY (312.5 x 100.0 x 337.5mm)
Dry Circuit: Open Circuit Voltage <20mV Weight: 10.85 lbs. (5kg) net, 15.2 lbs. (7kg) ship
for 200m, 2 and 20 ranges
Measurement Rate: Fast: 15 measurements/second Environmental: Specifications: +15°C to +35°C, 75% RH
Medium: 6 measurements/second Operating: 10°C to +40°C
Slow: 1.5 measurements/second Storage: 0°C to +50°C
Humidity: 10 - 90% RH
Measurement Mode: Continuous or Trigger Pollution Degree 2
Trigger: Internal Installation Category II
Manual Power: · 90 - 125V AC
External (IEEE or Handler) · 190 - 250V AC
Delay Times: Trigger Delay: 5 - 1000ms · 48 - 62 Hz
Measurement Delay: 0 - 100s · 80W max
Ranging: Automatic or Hold Range
Zeroing: Open and short circuit compensation
Averaging: 1 - 10
Comparator: Hi/Lo Limits (Value or %)
Binning: Hi/Lo Limuts (8 bins in %)
Indication: Audible Alarm programmable: HI LO or
OFF for Pass or Fail Result
Display: 240 by 64 dot matrix LCD display
Setup Storage: Auto recall on power-up
Lock: Keypad Lockout
Interfaces (Standard): RS-232
Interfaces (Optional): IEEE-488 and Handler
Test Terminals: Front: 4 Sheathed Banana & 1 GND
Ordering Information
LR2000 Milliohmmeter Optional Accessories:
B/A Calibration Data
Includes:
LR2000-50 Kelvin Clip Lead Set
QuadTech P/N Item
700171 IEEE-488/Handler Interface
150713 LR2000 Instruction Manual
LR2000-50 Lead Set: 4 Banana Connectors to 2 Kelvin Clips
4200-0300 AC Power Cord
520026/520138 Power Line Fuses (1.0A 250V/0.5A 250V)
Calibration Certificate Traceable to NIST
CompuMess Elektronik GmbH
For more detailed specifications, visit www.quadtech.com
For more information about special purchase, rent & lease options, call
Lise-Meitner-Str.1, 85716 Unterschleissheim
1-800-253-1230 · Fax 1-978-461-4295 · Intl. 1-978-461-2100
5 Clock Tower Place, 210 East, Maynard MA 01754
Tel 089-321501-0 Fax 089-321501-11 P/N 030127/A1
http://www.compumess.de oder http://www.netzteile.de