This file is the user's manual of high temperature pressure sensors. It introduces the structure, features, application, installation and maintenance of the sensors
This manual provides detailed instructions for installing, maintaining, and operating Gefran pressure sensors designed for high-temperature environments. It covers various sensor models, technical specifications, electrical connections, and safety precautions. The sensors are suitable for measuring pressure in melted plastic at temperatures up to 538°C, with options for mercury, FDA-approved oil, or NaK filling. The manual includes sections on calibration, autozero, and compensation functions, as well as certifications for hazardous areas.
The document is organized into sections covering general information, sensor models, technical data, mechanical dimensions, installation procedures, electrical connections, onboard functions, maintenance, safety, and appendices on operating principles, IP protection, and accuracy classes.
| Pressure Range | 0-35 to 0-2000 bar / 0-500 to 0-30000 psi |
|---|---|
| Accuracy | < ±0.25% FSO (H); < ±0.5% FSO (M) |
| Maximum Temperature | Up to 538°C (for K series) |
| Output Signal | 3.33mV/V, 4-20mA, 0-10V, 0-5V, CANopen |
| Power Supply | 6–12Vdc (10Vdc typical) |
| Diaphragm Material | 15-5PH stainless steel with GTP coating |
| Protection Degree | IP65 |
| Thermal Drift | < 0.02% FSO/°C (compensated range) |
The sensors support 3.33mV/V, 4-20mA, 0-10V, 0-5V, and CANopen output signals.
Accuracy is < ±0.25% FSO for class H and < ±0.5% FSO for class M.
The sensors can be filled with mercury (M series), FDA-approved oil (W series), or NaK (K series).