Description:
The LOM-530 is convenient single unit containing a complete set of (5) working standard grade resistors for complete calibration of micro-ohmmeters. The standard resistance values are those used by the LOM-510A Microohmmeter/Milliohmmeter.
This versatile set of resistance standards is a useful tool for any calibration lab looking to calibrate not only the IET LOM-510A micro-ohmmeter, but wide verity of micro-ohmmeters from various manufacturers. Resistance values from 0.001 ohm to 2 Megohms are available.
For example, the LOM-530 can also be customized to have other values that are required for adjustment of other manufacturers milliohmeters such as 0.019, 0.19, 1.9, 19, 190 ohm resistor values used by the QuadTech 1880, LR2000 and the Chroma 16502.
Features:
• 1 μΩ resolution
• 0.02% basic accuracy
• Digital output
• Four measurement modes
• Auto-zero switched dc mode
• Probes for chips and traces
• New switch design, improves reliability
• New external voltage selector switch
• New IEC inlet adapter with fuse
Accuracy:
SW (switched dc): 0.02% + 2 counts +2 μΩ
dc (continuous dc): 0.04% + 2 counts + 2 μΩ
Pulsed mode: 0.02% + 4 counts + 2 μΩ
Zero Adjust:
Active only in DC (Continuous dc) mode.
Noise Rejection:
80 dB for SW (Switched dc) and Pulsed Mode
60 dB for DC (Continuous dc) mode.
SW (Switched dc) Mode:
Current switched on for 166 ms, then off for 500 ms (25% duty cycle).
Pulsed Mode:
One cycle of SW (Switched dc) mode; enabled by short ing two con tacts on rear panel connector.
Display:
4½ digit, 0.5 inch, red LED display.
Display Overrange In di ca tion:
Flashes for DC (Continuous dc) and SW (Switched dc) blanks in Pulsed mode
Measurement Rate:
1.5 readings/second
Connections to Un known:
4-ter mi nal Kelvin leads with shield
Outputs:
5 BCD digits for value and polarity; Pulsed Mode Control lines; power supply lines; 25 pin "D" connector.
Warm up time:
1 minute to rated accuracy
Accuracy vs. Temperature:
Stated ac cu ra cy applies over an am bi ent tem per a ture range of 18 to 27 °C. Error doubles over the range of 10 to 40 °C.
Accessories Supplied:
LOM-501 test clips
Power Requirements:
105-125 Vac or 210-250 Vac; 50-60 Hz selectable on rear panel 30 W max.
Mechanical:
Dimensions: 22.9 cm W x 5.1 cm H x 27.9 cm D (9" x 2" x 11")
Weight: 2.7 kg (6 lb)
