| Type | Features |
| FD 2 K 0 | Basic type, setting range 2 – 10 mbarg |
| FD 6 K 0 | Setting range 2 – 10 mbarg, with red signal lamp |
| FD 8 K 0 | Setting range 2 – 10 mbarg, with green signal lamp |
| FD 2 K 1-7 | Basic type, setting range 5 – 70 mbarg |
| FD 6 K 1-7 | Setting range 5 – 70 mbarg, with red signal lamp |
| FD 8 K 1-7 | Setting range 5 – 70 mbarg, with green signal lamp |
