| Model | Range | Test Voltage (DC) |
| PEI - 10 | 20 MΩ to 20 GΩ |
500 V.DC |
| PEI - 11 | 20 MΩ to 20 GΩ |
50V, 100V, 250V, 500V, 1000V. DC |
| PEI - 21 | 200 MΩ to 2 TΩ |
500V, 1000V. DC |
| PEI - 35 | 20 MΩ TO 20 GΩ |
500V. DC |
| Sr. No. | Range | Effective Range | Resolution | Accuracy |
| 1. | 20 MΩ | 0.5 MΩ - 20 MΩ | 0.01MΩ | 1.5%Ω + 0.1MΩ |
| 2. | 200 MΩ | 10 MΩ - 200 MΩ |
0.1MΩ | 2% |
| 3. | 2000 MΩ | 100 MΩ - 2000 MΩ | 1MΩ | 2% |
| 4. | 20 GΩ | 1 GΩ - 20 GΩ | 10MΩ | 3% |
| 5. | 200 GΩ | 10 GΩ - 200 GΩ | 100MΩ | 3% |
| 6. | 20.0 TΩ | 100 GΩ - 2.0 TΩ | 1GΩ | 5% |