


Siemens 771-16STF2 current-to-pneumatic transducer converts a 4–20 mA DC input to a 3–15 psig pneumatic output. Standard output capacity (0.16 scfm), terminal strip wiring, 20 psig supply, and FM-approved F2 non-incendive classification.
The Siemens 771-16STF2 is a current-to-pneumatic transducer designed to convert a DC milliampere input signal to a proportional pneumatic output signal. This configuration is specified for a 4–20 mA input and a 3–15 psig output range.
For Series 771 standard units, calibration accuracy is specified at ±1/2% of span with reproducibility of 0.2% of span and response level of 0.025% of span. The specified supply pressure is 20 psig with an operating temperature range of –40 to 180°F (–40 to 82°C).
| Type | Current-to-Pneumatic Transducer (I/P Transducer) |
|---|---|
| Series | Siemens 771 |
| Model | 771-16STF2 |
| Input Range | 4–20 mA DC |
| Output Range | 3–15 psig |
| Input Impedance (for 4–20 mA, 3–15 psig) | 185 Ω |
| Supply Pressure | 20 psig |
| Output Capacity | Standard: 0.16 scfm |
| Zero Offset Adjustment | +40% and –20% of span |
| Calibration Accuracy (Series 771) | ±1/2% of span (standard unit) |
| Reproducibility (Series 771) | 0.2% of span |
| Response Level (Series 771) | 0.025% of span |
| Supply Pressure Effect (Series 771) | Less than 2% of span (18 to 22 psig supply change) |
| Temperature Range | -40 to 180°F (-40 to 82°C) |
| Electrical Connections | Enclosed terminal block, 1/2" threaded |
| Enclosure | NEMA 3R; NEMA 4 via conduit vent |
| Electrical Classification (F2) | Non-incendive: Class I, Div. 2, Groups A, B, C, D; Dust-ignition proof: Class II, Div. 1, Groups E, F, G; Suitable for Class III, Div. 1 hazardous locations |
| Dimensions (standard unit drawing) | Approx. 4.78 in (H) × 3.47 in (W) × 2.25 in (D) |