Siemens 771-8STF1 Current-to-Pneumatic (I/P) Transducer, Intrinsically Safe

Siemens 771-8STF1 Current-to-Pneumatic Transducer

The Siemens 771-8STF1 is a Model 771 current-to-pneumatic (I/P) transducer designed to convert a DC milliampere input signal to a pneumatic output signal proportional to the input.

Configuration Highlights

• Input/Output: 4–20 mA to 3–27 psig
• Output capacity: Standard
• Electrical connection: Terminal strip (enclosed terminal block, 1/2" threaded)
• Supply pressure (Model 771-8): 35 psig
• Enclosure: NEMA 3R; NEMA 4 via conduit vent

Performance and Operating Range

Series 771 functional specifications include zero offset adjustment of +40% and –20% of span, with an operating temperature range of -40 to 180°F (-40 to 82°C).

Applications

• Converting controller or measuring-device current outputs to pneumatic control signals
• Process control loops requiring a proportional pneumatic output
• Hazardous-location installations where intrinsically safe approval is required

Verified Differentiator

Intrinsically Safe (F1) designation per Model 771 ordering data.