DatasheetDynisco PT46X4 Series Pressure Sensors with SIL2
The Dynisco PT46X4 Series includes robust pressure sensors for reliable melt pressure and process pressure measurements. The sensors are designed for general applications requiring simple installation, high repeatability and long-term reliability. With an industry-standard 4…20 mA output signal, 14…36 VDC input voltage and pressure ranges from 0…500 to 0…30,000 psi, the series is suitable for a wide range of machinery, plant and plastics processing applications.
The PT46X4 sensors use a four-arm bonded foil Wheatstone bridge strain gauge configuration. They achieve an accuracy of ±0.5 % FS combined error, including linearity, repeatability and hysteresis. The standard wetted parts are made of DyMax® coated 15-5 PH stainless steel. For commissioning and maintenance, zero and span can be adjusted using side-mounted potentiometers, and an internal 80 % shunt calibration function is available for signal verification.
A key advantage of the PT46X4 Series is its safety-related rating. The sensors are self-certified based on an exida™ FMEDA analysis and meet both SIL2 and Performance Level “c” according to EN ISO 13849-1 when installed according to Category 1. This allows them to be integrated into safety-related control systems. An optional Guardian function is available, providing a separate relay output that can be used as a field-settable safety output to place machinery in a safe state.
| Type | Pressure sensor for melt pressure and process pressure measurements |
|---|---|
| Model | Dynisco PT46X4 Series |
| Safety rating | SIL2 and PL “c” |
| Output signal | 4…20 mA |
| Input voltage | 14…36 VDC |
| Pressure ranges | 0…500 to 0…30,000 psi |
| Accuracy | ±0.5 % FS combined error, including linearity, repeatability and hysteresis |
| Repeatability | ±0.2 % FS |
| Configuration | Four-arm bonded foil Wheatstone bridge strain gauge |
| Zero and span | Adjustable via side-mounted potentiometers |
| Zeroing | Local zeroing via zero potentiometer or remote zeroing by shorting two pins together |
| Internal shunt calibration | 80 % FS ±0.5 % |
| Load resistance | 0…1,100 Ω |
| Over pressure | 2 × FS or 35,000 psi, whichever is less |
| Insulation resistance | 1,000 MΩ at 50 VDC |
| Max. diaphragm temperature | 750 °F / 400 °C |
| Diaphragm zero shift | Typically 25 psi / 100 °F or 45 psi / 100 °C |
| Electronics operating temperature | -20…185 °F / -29…85 °C |
| Electronics zero shift | Max. ±0.05 % FS / °F or max. ±0.10 % FS / °C |
| Mounting torque | 500 inch/lbs max. |
| Standard wetted parts | DyMax® coated 15-5 PH stainless steel |
| Process connection | 1/2-20 UNF thread |
| Optional temperature measurement | Optional thermocouple or RTD configurations available to provide melt temperature measurement |
| CE | Directive 2004/108/EC |
| PL “c” | Meets EN ISO 13849-1 Performance Level “c” as part of a safety-related control system when installed according to Category 1 |
| SIL2 | Safety Integrity Level 2 |
| FMEDA | 3rd-party exida™ analysis and self-certification based on FMEDA analysis and internal audit |
| Guardian option | Optional relay output signal as a field-settable safety output for safe-state indication |
