NG # 2261-HW-PEP-013
Valve actuator proximity switches (or dual sensors for valves) are dual inductive proximity sensors integrated into a single compact housing. They monitor the two limit positions—OPEN and CLOSED—of quarter-turn (90°) rotary pneumatic valve actuators (such as ball valves and butterfly valves) or linear process valves.
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Get A QuoteProduct flow instruments are used in many of the process Industries. In the majority of applications these instruments are controlled using a shaft rotation of 90° with the valve position status used as feedback to the control system.
Our valve position feedback sensors are available in both standard housings according to VDI/VDE 3845 as well as in open solutions.
These proximity sensors are offered in styles for direct mounting onto the actuator for fast connection, easy replacement and extreme compactness. Also, in standardized housing shapes that are well protected and provide integrated terminals for the switch and control valve.
| Parameter | Technical Specification |
| Mounting Standard | VDI / VDE 3845 (NAMUR pad sizes: $80 \times 30\text{ mm}$ or $130 \times 30\text{ mm}$) |
| Actuator Stem Height | $20\text{ mm}$, $30\text{ mm}$, or $50\text{ mm}$ shaft heights |
| Sensing Principle | Dual Inductive (Non-contact) |
| Operating Voltage ($U_B$) | 10 – 30 V DC (3/4-wire), 8.2 V DC (NAMUR), or AS-Interface bus power |
| Output Types | PNP, NPN, 2-wire DC, NAMUR (EN 60947-5-6), or AS-Interface |
| Solenoid Valve Connection | Integrated output terminal for direct solenoid valve power/control |
| Housing Materials | Polycarbonate (PC), PBT, Vestamid, or Stainless Steel 316L |
| Operating Temperature | -25 °C to +70 °C (-13 °F to +158 °F); low-temp variants down to -40 °C |
| Enclosure Rating | IP67 / IP68 / IP69K |
| Certifications | ATEX, IECEx, UL, SIL 2 / SIL 3 capable variants |
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