SRI983 Elektro-pneumatický pozicionér v pevném závěru

SRI983 - Elektro-pneumatický pozicionér - explosion proof nebo Ex d (Flameproof) provedení



  • Independent adjustment of zero and span
  • Adjustable amplification and damping
  • Split range up to 3-fold



  • Analog 4-20 mA: 
  • Load 260 Ohm (5.2 VDC at 20 mA)




  • Stroke 8 to 100 mm (0.3 to 4 in), extended stroke range on request
  • Angle range up to 120°
  • Characteristic curves by cams
  • Supply air pressure up to 6 bar (90 psig)
  • Built-in pressure gauges (optional)
  • Low air consumption
  • Low vibration effect in all directions
  • Single or double-acting
  • Mounting on linear actuators according to IEC 534, Part 6 (NAMUR)
  • Mounting on rotary actuators according to VDI/VDE 3845
  • Protection class pneumatic unit: IP54, 
  • IP65 (on request)
  • Protection class I/P-converter: IP65 (acc. to ATEX), NEMA 4 (acc. to FM and CSA)
  • Explosion protection: 

  •  II 2 G Ex d IIC / Flameproof acc. to ATEX 
  •  „Explosion proof“ (“Intrinsic Safety”) acc. to FM and CSA


The electro-pneumatic Positioner SRI983 with analog input 4-20 mA is designed to operate pneumatic valve actuators and is available in the version Ex d – Flameproof / “explosion proof” / “intrinsic safety”.

The adaptation and settings of zero and span can easily be achieved by the knurled-head screw.