SA-1 & SA-1-EP

SA-1 positioner can be fitted on actuators with simple or double effect and operational stroke included between 3÷100 mm for reverse action and the spring extended. Besides, it has operational stroke included between 2÷65 mm for direct and reverse action and the spring compressed for cylinder with max diameter 200 mm. Their operating principle belongs to the force balance type with linear characteristics. SA-1 positioner is very compact and it can be fully installed on the servo-control syste. The feed-back element consists in a spring having a linear characteristic, actuated by the piston movement: no external elements for movement intake are therefore required.
 
  • Air consumption: about 1.3 Nm^3/h with positioner in balance and air supply at 6 bar
 
  • Air supply pressure: dry and clean instrument air at 3÷7 bar (300÷700 kPa)
 
  • Connections:
- 1/4" NPT for air supply - 1/4" NPT for regulating signal
  • Inlet signal pressure: 3÷15 psi (0.2÷1 bar) - (20÷100 kPa)
 
  • Linearity: 1% referring to the stroke
 
  • Materials:
- External parts: anticorodal - Internal parts: bronze and stainless steel
  • Operating temperature: -20°C to +60°C
 
  • Sensibility: < 0.3%
 
  • Stability: it is not sensitive to pressure change of air supply