High Accuracy Micro-Ohmmeter LOM-510A Page 1 of 2 Features and ac ces so ries to assure locations. The unit comes with rugged 4-terminal that very low resistance mea sure- test clips and a large se lec tion of optional probes, clips and x tures allowing at tach ment to any low- ments are ac com plished ac cu rate ly, resistance unknown. eas i ly, and eco nom i cal ly. Switched dc Mode: Allows measurement of switch con tacts, welds, shunts, PC board tracks and other Features: primarily resistive elements. Thermal emf 1 resolu on ef fects are eliminated. 0.02% basic accuracy Constant dc Mode: Digital output Suitable for measuring the resistance of Four measurement modes in duc tive components such as coils or trans form ers. Auto-zero switched dc mode Pulsed Mode: Probes for chips and traces Provides low drive current to allow New switch design, improves reliability mea sure ments of fuses, thermistors, and New external voltage selector switch other ther mal ly sen si tive de vic es. New IEC inlet adapter with fuse Model LOM-510A Micro-ohmmeter shown with Dry Circuit: LOM-501C Standard 4-Termi nal Kelvin clips Assures that oxides and lm contacts are not punc tured. The Dry Circuit Mode limits The LOM-510A has 4 digits, 0.02% basic the open circuit voltage to 50 mV. The accuracy and 1 res o lu tion. Its 4-terminal Model LOM-510A/20 limits the open circuit measurement tech nique elim i nates lead voltage to 20 mV. re sis tance errors and 80 dB of ac noise re jec tion provides rock-steady read ings even in noisy SPEC I FI CATIONS SW (Switched dc) Mode: Outputs: Range Max Dissipation Current switched on for 166 ms, then off for 5 BCD digits for value and polarity Pulsed Drive Resolution (Full Scale) DC SW 500 ms (25% duty cycle). Mode Control lines power supply lines 25 19.999 m 1 A 20 mW 5.0 mW 1 pin connector. Pulsed Mode: 199.99 m .1 A 2.0 mW .50 mW 10 One cycle of SW (Switched dc) mode Warm up time: 10 mA .2 mW .05 mW 100 1.9999 enabled by short ing two con tacts on rear 1 minute to rated accuracy 1 mA .02 mW 5 W 1 m 19.999 panel connector. Accuracy vs. Temperature: 199.99 .1 mA .002 mW 0.5 W 10 m Display: Stated ac cu ra cy applies over an am bi ent 4 digit, 0.5 inch, red LED display. tem per a ture range of 18 to 27 C. Error Accuracy: doubles over the range of 10 to 40 C. Display Overrange In di ca tion: SW (switched dc): Flashes for DC (Continuous dc) and SW Accessories Supplied: (0.02% + 2 counts +2 ) (Switched dc) LOM-501 test clips dc (continuous dc): blanks in Pulsed mode Typically (0.04% + 2 counts + 2 ) Power Requirements: Pulsed mode: (0.02% + 4 counts + 2 ) Measurement Rate: 105-125 Vac or 210-250 Vac 50-60 Hz 1.5 readings/second selectable on rear panel Zero Adjust: 30 W max. Active only in DC (Continuous dc) mode. Connections to Un known: 4-ter mi nal Kelvin leads with shield Mechanical: Noise Rejection: Dimensions: 22.9 cm W x 5.1 cm H x 27.9 cm D 80 dB for SW (Switched dc) and Pulsed Mode (9 x 2 x 11 ) 60 dB for DC (Continuous dc) mode. Weight: 2.7 kg (6 lb) LOM-530 (CALIBRATION KIT FOR LOM-510A) Max Power Stability TempCo Power Coef cient 50 ppm/year 2 W 20 ppm/C 0.1 ppm/mW 0.01 50 ppm/year 1 W 20 ppm/C 0.1 ppm/mW 0.1 1 20 ppm/year 0.25 W 10 ppm/C 0.5 ppm/mW 15 10 ppm/year 0.1 W 3 ppm/C 0.5 ppm/mW 150 10 ppm/year 0.1 W 1 ppm/C 0.5 ppm/mW Temperature Range: 15 to 30C Storage Range: 0C to 40C A convenient single unit containing a complete set of (5) working standard grade resistors for complete calibration of the micro-ohmmeter. IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 (800) 899-8438 FAX: (516) 334-5988 LOM Catalog Pages Dec. 2019 NewHigh Accuracy Micro-Ohmmeter LOM-510A Page 2 of 2 ACCESSORIES 4-Terminal General Purpose Kelvin Clips 4-Terminal Kelvin Microprobes 4-Terminal Heavy Duty Kelvin Clips Cable Assembly: LOM-501C Cable Assembly: LOM-506 Cable Assembly: LOM-504 Suitable for connection in most applications Suitable for: Suitable for: - chips Fine-point, spring- - large bushings Jaw opening - 1.75 Versions Jaw-Opening - 3/8 - circuit board components loaded tips (1.27 mm) - welded and bolted joints Lead Length - 3.7 m (12 ) LOM-501C - 1m (39 ) Miniature Tips - conductor traces - rails and pipes LOM-501C-2m - 2m (79 ) Rugged - inside of connectors - transformers and motors LOM-502C - clips only - fuses LOM-501 U - unterminated cable - power distribution buses Wide Opening Kelvin Clips Cable Test Fixture for Discrete Components: Assembly: LOM-501W LOM-501TF Suitable for Suitable for: Connecting to dual binding posts (0.75 apart) Radial or axial leads from the side or from the top Selection and binning Connecting to individual binding posts Reeled components LOM-501-XL Cable Options: Extra-Long cables for remote testing -- up to 50 m For applications where the device under test may be in an outdoors or distant location, and the LOM-510 must be kept in an indoors environment ORDERING IN FOR MA TION (length 1 meter) LOM-510A Digital Micro-ohmmeter LOM-504 Kelvin Test Clips Cable Assembly, Heavy Duty, LOM-501C test clips 2 inch jaws pair, (length 1 meter) LOM-530 Calibration Kit for LOM 510-A LOM-501C Kelvin Test Clips Cable Assembly (pair, length 1 meter) LOM-506 Kelvin Microprobes Cable Assembly (pair, length 1 meter) LOM-501C-2m Kelvin Test Clips Cable Assembly (pair, length 2 meters) LOM-506-1 Replacement Microprobes, set of 4 LOM-501W Kelvin Test Clips Cable Assembly (wide) LOM-501TF Test Fixture LOM-502C Kelvin Test Clips, without connector (pair) LOM-501-XL Extra-Long cable for remote testing (up to 50 m) LOM-503 Kelvin Test Clips Cable Assembly, E-Z Hooks IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 (800) 899-8438 FAX: (516) 334-5988 LOM Catalog Pages Dec. 2019 New NNNNNNeNeNeNeNeNeNeNeNeNeNeNeeweeeewwwwww