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The Ballantine Model 3207 micro ohmmeter is a 4-1/2 Digit instrument that measures low resistance in Milli and micro-ohms ranges with precise accuracy. It employs the proven 4-wire measurement technique and eliminates the lead resistance inherent in 2-wire technique to ensure accurate, repeatable readings.
Ballantine 3207 Technical Specifications
| Range (Ohms) | Maximum Reading | Resolution | Maximum Current | Accuracy |
| 2 milli-Ohm | 1.9999 milli-Ohm | .1 micro-Ohm | 1 A | +/- 0.5% +/- 5 dgts. |
| 20 milli-Ohm | 19.999 milli-Ohm | 1 micro-Ohm | 1 A | +/- 0.05% +/- 5 dgts. |
| 200 milli-Ohm | 199.99 milli-Ohm | 10 micro-Ohm | 100 mA | +/- 0.05% +/- 5 dgts. |
| 2000 milli-Ohm | 1999.9 milli-Ohm | 100 micro-Ohm | 10 mA | +/- 0.05% +/- 5 dgts. |
| 20 Ohm | 19.999 Ohm | 1 milli-Ohm | 10 mA | +/- 0.05% +/- 5 dgts. |
| 200 Ohm | 199.99 Ohm | 10 milli-Ohm | 1 mA | +/- 0.05% +/- 5 dgts. |
| 2000 Ohm | 1999.9 Ohm | 100 milli-Ohm | 0.1 mA | +/- 0.05% +/- 5 dgts. |
Reference Condition: 25 Deg C, 50% RH, Temp. Co. (+/-5 ppm of reading per Deg C)
Input Termination: 4-Wire (2 voltage and 2 current terminals)
Input Protection: Maximum input voltage 250 V rms AC/DC, Current terminals protected by 1 A fuse, accessible on rear panel
Zero Adjust: Front panel screwdriver adjustment
Warm-up: 15 minutes for specified accuracy
Environmental Characteristics:0 Deg C to 45 Deg C, RH less than 95%
Storage: -40 Deg C to 55 Deg C, RH no Condensation
Dimensions: 340 mm (D) x 258 mm (W) x 145 mm (H), approx., Weight 3.2
Power: 90-132 V, 60 Hz
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