The 4763 type electric valve positioner and 4765 type pneumatic valve positioner are samson company's positioning devices used to control pneumatic control valves, which have compact structure, low maintenance, arbitrary installation position, no mechanical vibration, positive and negative action adjustable, good dynamic response characteristics, suitable for conventional or step control, adjustable ratio / gain, adjustable output gas volume, low gas consumption, special type can use oxygen gas source, can be installed on the casting bracket or rod bracket of the control valve conforming to IEC 60534-6 standard.
This manual describes the 4763 and 4765 type positioners used in gas‑valve control systems. It covers the device’s features, explosion‑protection ratings, and the standards (IEC 60534‑6‑1, NAMUR) required for proper installation.
The document includes technical data such as rated travel, input and output signal ranges, pressure limits, weight, temperature range, and IP ratings, as well as fault‑safe operation guidelines and wiring diagrams. This manual is written in Chinese.
| Rated travel | 7.5–90 mm |
|---|---|
| Input control signal (explosion‑protected) | 4…20 mA |
| Weight | 1.2 kg (4763) / 1.1 kg (4765) |
| IP rating | IP54 (standard) / IP65 (special type) |
The explosion‑protected version accepts 4 to 20 mA, while the non‑protected version accepts 1 to 5 mA.
The positioner is certified for ATEX Zone 2, IIC T6 (e.g., EX ia IIC T6) and has IP54 for the standard version and IP65 for the special type.