Schubert & Salzer – Type 8047 Analogue Positioner
Need help selecting your product?
Overview
The Schubert & Salzer Type 8047 is a compact analogue positioner designed for top-mounted installation directly on pneumatic control valves. Available in electropneumatic (i/p) and pneumatic (p/p) configurations, the Type 8047 provides precise valve position control with a minimal footprint suitable for applications with small actuator strokes.
The Type 8047 integrates directly into the valve actuator assembly, eliminating externally accessible moving parts. An optional intrinsically safe version is available for use in hazardous area classifications, and an optional integrated optical position indicator can be added between the positioner and valve actuator.
Features & Benefits
- Compact top-mounted design integrates directly onto pneumatic control valve actuators — no external moving return stroke parts exposed
- Suitable for small actuator strokes (0.2 – 1 inch stroke range)
- Available as electropneumatic (i/p) or pneumatic (p/p) positioner — two versions from a single platform
- Optional integrated optical position indicator mounts between positioner and valve actuator for visual feedback
- Optional inductive limit switches for discrete position feedback to control systems
- Available in intrinsically safe explosion-proof version (Ex II 2G Ex ib IIC T6 Gb) for hazardous area installations
- Nickel-plated brass construction for durability in demanding process environments
- IP 54 protection rating for resistance to dust and water ingress
Technical Specifications
- Input signal (electropneumatic): 0/4 – 20 mA
- Input signal (pneumatic): 3 – 15 psi
- Nominal stroke range: 5 – 22 mm (0.2 – 1 inch), dependent on return spring
- Pilot energy (supply pressure): 45 – 90 psi
- Air consumption: 14 – 21 scf/h (depending on output pressure)
- Hysteresis: < ±1%
- Ambient temperature range: +5°F to +140°F
- Pneumatic connection: G 1/8″ / NPT 1/8″
- Actuator compatibility: Linear actuators
- Housing material: Nickel-plated brass
- Protection class: IP 54
- Explosion-proof option: Ex II 2G Ex ib IIC T6 Gb (intrinsically safe)
- Approvals: EU Declaration of Conformity, UKCA Declaration of Conformity
Applications
- Pneumatic control valve positioning in process automation
- Chemical and petrochemical processing with small-stroke linear actuators
- Food & beverage process control requiring compact valve-mounted positioners
- Hazardous area installations requiring intrinsically safe positioner (Ex version)
- Textile, rubber, and plastics manufacturing process control
- Water treatment and energy industry valve control applications
- Any application requiring precise analogue positioning on a pneumatic linear valve actuator
Type 8047 Accessories
- Integrated Optical Position Indicator – Optional visual position indicator mounted between the positioner and valve actuator body
- Inductive Limit Switches – Optional discrete position feedback switches for integration with control systems and PLCs