Model T5200 Electro-Pneumatic I/P, E/P Transducer

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The Fairchild T5200 Transducer is an electro-pneumatic device that is controlled by a 4-20 mA current in a control loop. It featuers a fast response to input signal changes, resulting in faster loop control and savings in process materials.


  • Fast Response to Input Signal changes results in faster loop control and savings in process materials.
  • Minimal Air Consumption allows use in systems where operating gas is expensive.
  • Five Input Signal Ranges meet most process and machine requirements.
  • Temperature Compensation provides stable operation during temperature changes.
  • Compact Size permits use in space restricted areas.
  • Vibration Resistance maintains set points under adverse vibration conditions.
  • Various Mounting Configurations allow installation flexibility for most applications.
  • NEMA 3R Enclosure available for outdoor and indoor installations.
Operating Principles

The Fairchild T5200 Transducer is an electropneumatic device that is controlled by a 4-20 mA current in a control loop. This device is made up of two sections, the Signal Conversion Section and the Pneumatic Section.

The Signal Conversion Section (PC Board) accepts a 4-20 mA current from the control loop. This signal current is applied to a coil which creates a magnetic force that moves a Flexure Arm.

The Pneumatic Section operates as a force balance system. A Sapphire Ball floats inside a Nozzle and controls the output pressure by exhausting air supplied through an Orifice. This Sapphire Ball acts as a piston exerting a force which is balanced against the force of the Flexure Arm.


Supply Pressure
20 + 2 psig, [1.5 + 0.15 BAR], (150 + 15 kPa)
Output Capacity (SCFM)
0.15 (0.26 m3/HR) Maximum
Air Consumption (SCFM)
0.16 (0.27 m3/HR) Maximum
Output Range
3-15 psig, [0.2-1.0 BAR], (20-100 kPa)
Supply Pressure Effect
+ 0.3% of Span for a 1 psig, [0.1 BAR], (10 kPa) supply change
Impedence / Input Signal

Range OHMS
1-5 mA 2000
1-5 mA 2000
4-20 mA 1201
10-50 mA 501
1-9 VDC 2550
1-5 VDC 375

1Add 332 OHMS for CSA Units.

Shock & Vibration Effect
Negligible up to 2 g's between 5 Hz and 200 Hz
Terminal Based Linearity
+ 0.50% Full Scale
Independent Linearity
+ 0.25% Full Scale
Temperature Coefficient
Less than 1% of Span / 50°F (10°C)
Within 0.1% Full Scale
Frequency Response
-3 db @ 20 Hz (unloaded)
Ambient Temperature
-40°F to +150°F, (-40°C to +65.5°C)
Materials of Construction
Body and Housing: Aluminum
Ball and Orifice: Sapphire, Brass
Nozzle: Stainless Steel

Catalogue PDF: application/pdf
Operational PDF: application/pdf
Located in: Transducers

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