DatasheetDynisco PT139 & PT139A Rugged Test Pressure Transducers
Dynisco PT139 and PT139A pressure transducers are designed for hydraulic pressure measurement in extreme environments. They are especially suitable for vehicle hydraulics, mobile hydraulic systems, industrial machinery and other demanding applications where cyclic pressure, shock and vibration are present.
The small and rugged design allows use in restricted-space installations. The all-welded stainless steel construction provides reliable sealing and helps prevent contamination. The series offers a 3 mV/V output signal, internal 80% shunt calibration and an extended operating temperature range.
| Technical Specifications | |
|---|---|
| Pressure Ranges PT139 | 0–15 psi, 0–25 psi, 0–50 psi, 0–75 psi, 0–100 psi, 0–250 psi |
| Pressure Ranges PT139 / PT139A | 0–300 psi, 0–500 psi, 0–1,000 psi, 0–2,500 psi, 0–5,000 psi, 0–10,000 psi |
| Accuracy | ±0.5% full scale including linearity, hysteresis and repeatability |
| Full Scale Output | 3 mV/V ±1.0% typical, ±2.0% maximum |
| Zero Balance | ±1.0% typical, ±2.0% maximum |
| Input Resistance | 420 Ω ±20% |
| Output Resistance | 370 Ω ±10% |
| Internal Shunt Calibration | 80% ±0.5% full scale typical, ±1.0% maximum |
| Excitation | 10 VDC recommended, 15 VDC maximum |
| Operating Range | -65 °F to +285 °F (-54 °C to +140 °C) |
| Compensated Range | -40 °F to +275 °F (-40 °C to +135 °C) |
| Temperature Effect on Zero | ±0.008% full scale/°F, ±0.014% full scale/°C |
| Temperature Effect on Span | ±0.008% full scale/°F, ±0.014% full scale/°C |
| Safe Overpressure | 2 × rated pressure |
| Burst Pressure | 5 × rated pressure |
| Wetted Material | 17-4 PH and 15-5 PH stainless steel |
| Cover Material | 303 / 304 stainless steel |
| Weight | PT139: approx. 5 ounces; PT139A: approx. 2 ounces |
