FMB70 Chinese Manual Download
The FMB70 series smart pressure transmitter is widely used in industrial process control. To facilitate quick access to information for engineering technicians and procurement personnel, this article provides the official Chinese manual download link and organizes the core technical points.
Download FMB70 Chinese Manual.pdf
FMB70 Product Overview
The FMB70 is a smart pressure transmitter using microprocessor technology, supporting fieldbus and 4-20mA analog output. Its core advantages lie in high accuracy, wide turndown ratio, and good long-term stability, making it suitable for pressure measurement in petroleum, chemical, power, water treatment, and other industries.
Main Technical Features
- High accuracy: Typical accuracy up to ±0.075%FS, meeting precision process control requirements.
- Wide turndown ratio: Supports 100:1 turndown ratio, reducing spare parts variety and inventory costs.
- Multiple communication protocols: Supports HART, PROFIBUS-PA, FOUNDATION Fieldbus, etc.
- Self-diagnosis function: Real-time monitoring of sensor and electronic component status for predictive maintenance.
- Rugged housing: Protection class IP66/IP67, adapting to harsh industrial environments.
FMB70 Technical Parameters
The following are common technical parameters of the FMB70 series. For specific models, please refer to the manual. When selecting, focus on the range, process connection, and output signal.
| Parameter | Specification |
|---|---|
| Measuring range | 0-10kPa to 0-40MPa (adjustable) |
| Output signal | 4-20mA + HART / PROFIBUS-PA / FF |
| Accuracy class | ±0.075%FS, ±0.1%FS |
| Power supply | 12-45V DC (HART) |
| Process temperature | -40℃ to +120℃ |
| Ambient temperature | -40℃ to +85℃ |
| Protection class | IP66/IP67 |
| Process connection | G1/2, 1/2NPT, flange, etc. |
FMB70 Selection Points
Correct selection is the prerequisite for ensuring measurement accuracy and service life. It is recommended to determine the model according to the following steps.
- Determine measurement type: gauge pressure, absolute pressure, or differential pressure.
- Determine range: select according to actual working pressure; it is recommended that the working point be at 60%-80% of the range.
- Select output protocol: choose HART or fieldbus according to the control system interface.
- Confirm process connection: match the on-site pipeline interface and sealing material.
- Select electrical connection: M20×1.5, 1/2NPT, etc.
- Confirm explosion-proof rating: intrinsically safe Ex ia or flameproof Ex d.
Installation and Commissioning
Installation Precautions
- The installation location should avoid strong vibration and heat source radiation.
- When measuring steam or high-temperature media, a condensation coil or capillary must be added.
- The pressure guide pipe should maintain a certain slope to avoid gas accumulation or liquid deposition.
- The transmitter housing should be reliably grounded to ensure explosion-proof and anti-interference performance.
Commissioning Steps
- Power on and check the transmitter self-test status.
- Connect HART communication using a handheld communicator or host computer.
- Set the upper and lower range limits and damping time.
- Perform zero calibration and full-scale calibration.
- Save parameters and record commissioning results.
Common Faults and Handling
The following are typical problems that may occur during the use of the FMB70 and troubleshooting directions.
| Symptom | Possible Cause | Recommended Action |
|---|---|---|
| No output signal | Power reversed or open circuit | Check supply voltage and wiring polarity |
| Output low/high | Zero drift or blocked pressure guide pipe | Recalibrate zero, clear the pressure guide pipe |
| Communication failure | Missing HART resistor or address conflict | Check loop resistance and device address |
| Display fluctuates greatly | Medium pulsation or damping set too low | Increase damping time or add a buffer device |
Maintenance and Care
Regular maintenance can extend the service life of the FMB70 and maintain measurement accuracy. It is recommended to perform a calibration check every 12 months and replace seals every 24 months. For explosion-proof applications, relevant safety regulations must be followed during maintenance, and opening the cover while energized is prohibited.
For complete operating details and wiring diagrams, please download the FMB70 Chinese Manual PDF file above.