Schubert & Salzer – 9011 – Limit Switch for Diaphragm Actuator
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Overview
The Schubert & Salzer Type 9011 is an inductive limit switch designed for optional attachment to pneumatic diaphragm actuators, specifically the Type 8020. It provides self-sufficient, non-contact position detection for both on/off and control valve applications.
Available in standard PNP and Ex-proof (NAMUR) versions, the Type 9011 delivers reliable end-position feedback in demanding industrial environments. Its compact M12 form factor and IP 67 protection rating make it suitable for use in harsh or hazardous locations.
Features & Benefits
- Inductive proximity sensing — non-contact position detection eliminates mechanical wear for long service life
- Available in PNP and Ex-proof (NAMUR, acc. DIN 19234) versions to meet standard and hazardous area requirements
- IP 67 protection class — sealed against dust ingress and temporary water immersion
- M12 x 1 threaded barrel — industry-standard form factor for easy integration and field replacement
- Wide ambient temperature range — rated from -13°F to +176°F (-25°C to +80°C)
- Single or dual switch configurations available — order one or two pieces per actuator as required
- Mounts directly to Type 8020 diaphragm actuator — no separate bracket fabrication required
- Mounting plate constructed from 304 stainless steel for corrosion resistance
Technical Specifications
- Sensor type: Inductive proximity switch
- Versions: PNP (standard); Ex-proof per DIN 19234 (NAMUR) — uncoupling relay required for Ex version
- Explosion protection (Ex version): II 2 G EEx ia IIC T6
- Thread size: M12 x 1
- Voltage — PNP: 10–30 V DC
- Voltage — Ex-proof (NAMUR): 8 V DC
- Breaking capacity (PNP): 200 mA
- Ambient temperature: -13°F to +176°F (-25°C to +80°C)
- Protection class: IP 67
- Mounting plate material: Stainless steel 304
- Connection: Plug socket or cable
- Compatible actuator: Type 8020 pneumatic diaphragm actuator
Applications
- End-position feedback on pneumatic diaphragm-actuated on/off valves
- Position monitoring on modulating control valves with diaphragm actuators
- Process control systems requiring valve open/closed status signals
- Hazardous area installations requiring NAMUR-compatible proximity switching
- Chemical, petrochemical, and industrial process plants
- Water treatment and energy applications
Type 9011 Accessories
- Type 8020 – Pneumatic diaphragm actuator; primary compatible actuator for Type 9011 limit switch attachment
