VEGAMET 381 Chinese Manual Download
VEGAMET 381 is a signal conditioning instrument for level measurement, often used with VEGA sensors. To facilitate quick access to information for engineering technicians and procurement personnel, this article provides the official Chinese manual download entry and summarizes key selection and commissioning points.
Download VEGAMET 381 Chinese Manual.pdf
VEGAMET 381 Product Overview
VEGAMET 381 is a signal conditioning instrument for continuous level measurement that converts sensor signals into standard outputs. It supports relay outputs and analog outputs, making it suitable for various industrial process scenarios.
Main Functions
- Supplies power to VEGA level sensors and processes measurement signals
- Provides 4…20 mA analog output for easy integration into control systems
- Built-in relay outputs for limit alarms or pump control
- Supports on-site display and keypad operation for easy commissioning
Typical Applications
- Level monitoring in water and wastewater treatment
- Level measurement and control in chemical storage tanks
- Hygienic level measurement in the food and beverage industry
- Pressure/level interlocking in pump stations and pipeline networks
Technical Parameters and Selection
When selecting, pay attention to power supply, output type, accuracy, and environmental conditions. The following table lists the core parameters of the VEGAMET 381 for reference by engineering technicians and procurement personnel.
| Parameter | Specification |
|---|---|
| Supply voltage | 20…253 V AC/DC (wide range) |
| Analog output | 4…20 mA, load ≤ 500 Ω |
| Relay output | 2 SPDT, contact capacity 250 V AC / 3 A |
| Measurement accuracy | ≤ 0.1% of full scale |
| Operating temperature | -40…+60 °C |
| Protection rating | IP20 (terminal side) |
Selection Notes
- Confirm that the sensor type is compatible with the VEGAMET 381, such as VEGAPULS, VEGAFLEX, etc.
- Choose analog or relay output configuration according to control requirements
- Verify that the on-site supply voltage matches the instrument nameplate
- For hazardous areas, use explosion-proof models or add safety barriers
Installation and Wiring Steps
Correct installation and wiring are prerequisites for ensuring stable operation of the VEGAMET 381. Please follow the steps below and strictly comply with on-site electrical regulations.
- After disconnecting power, open the instrument housing and confirm terminal markings.
- Connect the sensor signal wires to the corresponding terminals according to the manual.
- Connect the analog output and relay output to the control system.
- Connect the power supply, paying attention to the voltage range and polarity.
- After checking that the wiring is correct, power on and observe whether the display is normal.
Wiring Precautions
- Route signal cables separately from power cables to avoid electromagnetic interference
- Use shielded cables, with the shield grounded at one end
- The relay output load must not exceed the contact capacity
- Ensure reliable grounding and compliance with EMC requirements
Commissioning and Common Issues
The VEGAMET 381 supports zero and span adjustment via keys. Before commissioning, confirm that the sensor is correctly installed and powered.
Commissioning Steps
- Enter the parameter setting menu and select the sensor type.
- Set the measured values corresponding to the empty tank and full tank.
- Adjust the analog output correspondence (4 mA and 20 mA).
- Set the relay actuation point and delay.
- Save the parameters and exit, then verify the output signal.
Common Issues and Troubleshooting
- No display: Check the supply voltage and fuse.
- Abnormal output signal: Check the sensor wiring and span settings.
- Relay does not operate: Confirm the actuation point settings and load wiring.
- Fluctuating measured value: Check grounding and shielding, and eliminate interference sources.
Maintenance and Safety
Regularly inspecting the instrument appearance, wiring terminals, and display functions can extend the service life of the VEGAMET 381. Always disconnect power before maintenance, and operate only by professional personnel.
- Check terminal tightness every 6 months
- Keep the instrument clean and prevent dust and moisture from entering
- Use original parts when replacing components
- Comply with on-site safety regulations and explosion-proof requirements
For the complete wiring diagram and parameter list, please download the VEGAMET 381 Chinese Manual above. Correct selection and standardized commissioning can ensure long-term stable operation of the level measurement system.