頻率變送器，將輸入的頻率信號線性的轉換為電流信號，同時提供報警功能。
單通道，輸入頻率0.001HZ-5KHZ;
模擬量輸出0/4-20MA；
測量范圍可設定，2路繼電器輸出，1路電平輸出，
帶故障信息輸出
| 19 | P+F Z788.R | 45 |
| 20 | P+F Z787H | 2 |
| 21 | P+F Z728 | 15 |
| 22 | P+F NJ50-FP-N | 1 |
| 23 | 9401 6*6 | 20 |
| 24 | 9401 8*8 | 30 |
| 25 | 9401 10*10 | 15 |
| 26 | 9401 10*12 | 8 |
| 27 | 9401 8*10 | 2 |
| 28 | 9401 12*12 | 6 |
| 29 | 9404 6*6 | 8 |
| 30 | 9404 12*12 | 35 |
| 31 | 9416 | 27 |
| 32 | KFD2-STC4-EX1 | 151 |
| 33 | KFD2-CD-EX1.32 | 51 |
| 34 | KFD2-SR2-EX2.W | 0 |
| 35 | KFD2-STC4-1 | 14 |
| 36 | KFD2-CD-1.32 | 9 |
| 37 | P-LB-1.A.13 | 11 |
| 38 | P-LB-1.C.123 | 55 |
| 39 | P-LB-1.B.12 | 22 |
| 40 | KFD2-SR2-Ex1.W | 40 |
| 41 | KFD2-STC4-Ex1.20 | 22 |
| 42 | KFD2-EB2.R4A.B | 25 |
| 43 | UPR-03 | 4 |
| 44 | KFD2-DWB-EX1.D | 6 |
| 45 | KFD2-SCD-EX1.LK | 3 |
| 46 | KFD2-SR2-EX1.W.LB | 87 |
| 47 | KFD2-SR2-EX2.W | 44 |
| 48 | KFD2-STC4-1.20 | 3 |
| 49 | KFD2-STC4-EX1 | 33 |
| 50 | KFD2-STC4-EX1.20 | 2 |
| 51 | KFD2-UT2-2 | 1 |
| 52 | KFD2-UT2-EX1 | 6 |
| 53 | KFD2-SOT2-EX2 | 0 |
| 54 | KFD2-SOT2-EX1.LB | 4 |
| 55 | KFD2-STC3-EX1 | 7 |
