| GM-xx | Measurement range [g/cm3] | Outer diameter of pipe [mm] | Temperature measuring range [˚C] |
| 01 | 0.6 - 3.5 | 100 - 298 | −25 - 200 |
| 02 | 0.6 - 3.5 | 300 - 406 | −25 - 200 |
| 04 |
| 40 - 75 | 0 - 100 |
| 06 | 0.7 - 1.6 (or the corresponding percentages of concentration) | 40 - 75 (up to 250 for special design) | −25 - 200 |
| 01 or 02EX | 0.6 - 3.5 | 100 - 298 (for 01) 300 - 406 (for 02) | −25 - 200 |