PMD55 Pressure Transmitter Product Overview
PMD55 is a high-performance industrial pressure transmitter, widely used in process control, hydraulic systems, and energy management. It adopts a high-precision sensor and stainless steel housing to ensure stable operation under harsh working conditions. Based on the PMD55 Chinese manual, this article extracts core information to help engineering technicians and procurement quickly select and operate.
PMD55 Core Technical Parameters
Before selection, the following key parameters need to be clarified to ensure the transmitter matches on-site requirements. For specific values, please refer to the official PMD55 Chinese manual.
| Parameter | Typical Value | Description |
|---|---|---|
| Measuring range | 0~1MPa to 0~100MPa | Multiple ranges available |
| Output signal | 4~20mA / HART | Compatible with mainstream control systems |
| Accuracy class | ±0.5% FS | High-precision models up to ±0.2% |
| Power supply | 12~36V DC | Standard two-wire |
| Process connection | G1/2, M20×1.5, etc. | Various threads optional |
| Protection class | IP65/IP67 | Suitable for outdoor and humid environments |
PMD55 Installation Steps
Correct installation is the prerequisite for ensuring measurement accuracy and long-term stability. Please follow these steps:
- Check appearance: Confirm the transmitter has no shipping damage and the threaded interface is intact.
- Choose installation location: Avoid vibration, high temperature, and direct impact from corrosive media. It is recommended to install in a location convenient for observation and wiring.
- Seal connection: Use appropriate sealing gaskets and tighten the process connection according to torque requirements to prevent leakage.
- Electrical wiring: Refer to the wiring diagram in the PMD55 Chinese manual, correctly connect the power and signal lines, and pay attention to polarity.
- Power-on check: After power-on, observe whether the output is normal, and perform zero calibration if necessary.
Operation and Commissioning Key Points
Zero and Span Adjustment
Zero shift and span setting can be performed via a HART communicator or local buttons. Ensure the pressure source is stable before adjustment to avoid misoperation.
Common Troubleshooting
- No output signal: Check power polarity and whether wiring is loose.
- Large output deviation: Recalibrate zero and check if the process connection is blocked.
- Display fluctuation: Confirm whether the medium is pulsating; install a damping device if necessary.
Maintenance and Precautions
Regularly inspect the transmitter appearance and wiring, and clean the process interface. Do not use beyond the range; avoid impact and overload. After long-term disuse, it is recommended to calibrate before re-enabling.
For complete technical details and safety specifications, please download the PMD55 Chinese manual.