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Valves & Actuation

Plastic Pneumatic Actuator Options

Series 79P PST-A202DN SMART Positioner (Electro-Pneumatic)

The PST-A202DN SMART positioner is a 4-20mA positioner used to modulate pneumatic actuators via a proportional signal. The SMART positioner has the option for HART capabilities, which will make it compatible with networking solutions that follow HART protocol. All units have a position transmitter to allow for remote actuator position monitoring. Units feature a small package design for fitting into tight spaces. Local indication is provided via an LCD panel and mechanical pressure gauges are provided.

Ideal Applications Include:

Chemical Processing, Bleach Plants, Aquariums, Mining, Water Treatment, Landfills, Swimming Pools, Power Plants


Input current:



0.2% of span


+/- 0.5% of span

Conduit entry:

1/2" NPT

Supply air pressure:

60 – 100psi


+/- 0.51% of span


+/- 0.2% of span

Air connection:

1/4" NPT


  • Simple calibration of positioner with autocal pushbuttons located inside of positioner housing
  • Transmitter
  • Type 4X enclosure
  • Corrosion resistant polyester powder coated enclosure
  • SS trim
  • LCD visual position indication shown in percentage
  • Pressure gauges
  • 1/2" conduit entry
  • 1/4" NPT air connections
  • Split range capability
  • Reverse acting capability
  • Temperature limit of 185° F


  • Two x SPDT mechanical switches
  • HART capability
  • 316 stainless steel enclosure
  • ATEX enclosure