DatasheetDynisco PT418/419 Alternate Fill Pressure Sensors
The Dynisco PT418/419 Series has been specifically developed for applications where mercury-filled pressure sensors are not permitted or desired. Instead, these melt pressure sensors use an FDA and USDA compliant oil fill, providing accurate pressure measurement in sensitive processing environments.
The sensors are ideally suited for food processing, packaging machinery, medical applications and polymer extrusion processes. Their proven strain gauge technology delivers excellent accuracy, repeatability and reliable pressure monitoring even at elevated process temperatures.
| Technical Specifications | |
|---|---|
| Output Signal | 3.33 mV/V ±2.0% |
| Input Voltage | 10 VDC recommended, 12 VDC maximum |
| Accuracy | ±0.5% FSO |
| Repeatability | ±0.2% FSO |
| Configuration | Four-arm bonded foil Wheatstone bridge strain gauge |
| Bridge Resistance | Input: 345 Ω minimum Output: 350 Ω ±10% |
| Overpressure | 2 × FSO |
| Zero Balance | ±10% FSO |
| Internal Shunt Calibration (R-Cal) | 80% FSO ±1% |
| Insulation Resistance | 1000 MΩ at 50 VDC |
| Maximum Diaphragm Temperature | 527 °F (275 °C) |
| Zero Shift Due to Temperature | 36 psi/100 °F typical (65 psi/100 °C) |
| Electronics Operating Temperature | 250 °F (121 °C) |
| Electronics Zero Shift | ±0.05% FS/°F max. (±0.1% FS/°C max.) |
| Sensitivity Shift | ±0.02% FS/°F max. (±0.04% FS/°C max.) |
| Mounting Torque | 500 inch-lbs maximum |
| Standard Wetted Parts | Inconel 718 |
| Fill Medium | FDA and USDA compliant oil fill |
| Pressure Ranges | 0–1000 psi to 0–10,000 psi |
