The characterizable cam linear positioners converts the conventional pneumatic cylinder linear movement into a turning movement suitable to the 730 series positioner valve, to be applied to the quarter turn control adjustment. The cylinder position is transmitted to the positioner by mean of a cam.
Such cam can be shaped(mechanically carved), in such a way that the cylinder response is not linear, offering the flexibility to adapt the cylinder/actuator performance to the needs of the valve on which it is mounted. The retro – feed cam, together with its assembly accessories, is supplied in length to the stroke of each cylinder.
This is a rather compact assembly. A linear, direct or inverted adjustment, can be obtained according to the cam carving, or depending on the customer’s specifications.
| 1730.PR730: Pneumatic Rotary Positioner |
| 1731.PR731: Electro-Pneumatic Rotary Positioner (4-20 mA imput signal) |
| 1735.PR735: Electro-Pneumatic Rotary Positioner (0-10 V imput signal) |
1733.PR733: Electro-Pneumatic Rotary Positioner
intrinsicallly safe Eexia II CT6 |
COMMON CHARACTERISTICS FOR THE 2 MODELS |
| Main air suply |
3 - 10 bar |
| Linearity |
>99% full range |
| Hysteresis |
<0,5% full range |
| Repetitivity |
< 0, 3% full range |
Full range = stroke
Please check corresponding technical sheets.
CENTORK LINEAR POSITIONERS,EXTERNAL SPRING PR-120 SERIES
